Contents
HP E1418A 8/16-Ch D/A Converter User Manual
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
WARNINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Safety Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Reader Comment Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Chapter 1. Module Setup and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Using This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Module Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Ordering Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Field Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Terminal Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Front Panel Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Setting the Logical Address Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Module Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Installation in a Mainframe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Terminal Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Screw-Type Terminal Module (Standard) . . . . . . . . . . . . . . . . . . . . . . 22
Wiring the Terminal Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Attaching the Terminal Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Removing the Terminal Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Terminal Module Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Option A3E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Option A3H . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Option 135 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Terminal Module Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Configuring the Terminal Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
P/J Jumper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
V/I Jumper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Terminal Module Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Voltage and Current Output Connections . . . . . . . . . . . . . . . . . . . . . . 33
Combining Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Connecting an External Trigger Source . . . . . . . . . . . . . . . . . . . . . . . 35
Using the CAL Output Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Initial Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Device Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Module Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Chapter 2. Programming Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Using This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Program Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Querying Module Identification and Configuration . . . . . . . . . . . . . . . . . . . . 40
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SOURcen:CURRent[:LEVel][:IMMediate][:AMPLitude] . . . . . . . . . . . . . 85
SOURcen:CURRent[:LEVel][:IMMediate][:AMPLitude]? . . . . . . . . . . . . . 86
SOURcen:CURRent[:LEVel]:TRIGgered[:AMPLitude] . . . . . . . . . . . . . . 87
SOURcen:CURRent[:LEVel]:TRIGgered[:AMPLitude]? . . . . . . . . . . . . . . 88
SOURcen:FUNCtion:MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
SOURcen:FUNCtion:MODE? . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
SOURcen:VOLTage[:LEVel][:IMMediate][:AMPLitude] . . . . . . . . . . . . . 91
SOURcen:VOLTage[:LEVel][:IMMediate][:AMPLitude]? . . . . . . . . . . . . . 92
SOURcen:VOLTage[:LEVel]:TRIGgered[:AMPLitude] . . . . . . . . . . . . . . 93
SOURcen:VOLTage[:LEVel]:TRIGgered[:AMPLitude]? . . . . . . . . . . . . . . 94
STATus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
STATus:OPERation:CONDition? . . . . . . . . . . . . . . . . . . . . . . . . . . 96
STATus:OPERation:ENABle . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
STATus:OPERation:ENABle? . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
STATus:OPERation[:EVENt]? . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
STATus:PRESet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
STATus:QUEStionable:CONDition? . . . . . . . . . . . . . . . . . . . . . . . . 98
STATus:QUEStionable:ENABle . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
STATus:QUEStionable:ENABle? . . . . . . . . . . . . . . . . . . . . . . . . . . 99
STATus:QUEStionable[:EVENt]? . . . . . . . . . . . . . . . . . . . . . . . . . . 99
SYSTem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
SYSTem:ERRor? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
SYSTem:VERSion? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
TEST:NUMBer? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
TEST:TST[:RESults]? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
*TST? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
TRIGger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
TRIGger[:IMMediate] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
TRIGger:SOURce . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
TRIGger:SOURce? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
IEEE-488.2 Common Command Quick Reference . . . . . . . . . . . . . . . . . . . . 106
HP E1418A Command Quick Reference . . . . . . . . . . . . . . . . . . . . . . . . . 107
Appendix A. HP E1418A Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
DC Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
DC Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
General Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Cooling Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Appendix B. HP E1418A Register-Based Programming . . . . . . . . . . . . . . . . . . . 113
Addressing the Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
A16 Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
A24 Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
The Base Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Register Offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
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Reset and Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Register Maps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
A16/A24 REGISTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
A24 REGISTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Register Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Manufacturer ID Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Logical Address Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Device Type Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
VXI Status/Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
VXI Offset Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
Calibration Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Card Configuration Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Software Trigger Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Trigger Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Interrupt Status Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Isolation Status Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Channel Program Jumper Register . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Channel Trigger Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Channel Mode Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Channel Relay Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Card Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Main_DAC Immediate Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Main_DAC Triggered Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Offset_DAC Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Gain_DAC Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Undefined Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Channel Voltage Offset Calibration Registers . . . . . . . . . . . . . . . . . . . . 140
Channel Voltage Gain Calibration Registers . . . . . . . . . . . . . . . . . . . . . 141
Channel Current Offset Calibration Registers . . . . . . . . . . . . . . . . . . . . 142
Channel Current Gain Calibration Registers . . . . . . . . . . . . . . . . . . . . . 143
Calibration Resistor Value Registers . . . . . . . . . . . . . . . . . . . . . . . . . 144
Voltage Calibration Status Register . . . . . . . . . . . . . . . . . . . . . . . . . 144
Current Calibration Status Register . . . . . . . . . . . . . . . . . . . . . . . . . . 145
Calibration Isolation Status Register . . . . . . . . . . . . . . . . . . . . . . . . . 146
Calibration Card Configuration Register . . . . . . . . . . . . . . . . . . . . . . . 147
Calibration Checksum Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Module Serial Number Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Register Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Appendix C. HP E1418A Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Error Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Appendix D. Voltage/Current Output Adjustment . . . . . . . . . . . . . . . . . . . . . . 154
Using This Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
Calibration Constants and Non-Volatile Memory . . . . . . . . . . . . . . . . . . . . . 155
Equipment Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
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Making Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
Adjustment Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
Voltage Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Current Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Storing the Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
Return the Module to Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
Example Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
Appendix E. Configuration and Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . 166
Using This Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
Checking Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
Changing Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
Adding 8 Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
Installing Isolated/Non-Isolated Plug-on Modules . . . . . . . . . . . . . . . . . . 171
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
Isolating an Assembly (Self-Test) . . . . . . . . . . . . . . . . . . . . . . . . . . 173
Assembly Exchange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
To Exchange an Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
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Notes
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Certification
Hewlett-Packard Company certifies that this product met its published specifications at the time of shipment from the factory. Hewlett-
Packard further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technol-
ogy (formerly National Bureau of Standards), to the extent allowed by that organization’s calibration facility, and to the calibration
facilities of other International Standards Organization members.
Warranty
This Hewlett-Packard product is warranted against defects in materials and workmanship for a period of three years from date of ship-
ment. Duration and conditions of warranty for this product may be superseded when the product is integrated into (becomes a part of)
other HP products. During the warranty period, Hewlett-Packard Company will, at its option, either repair or replace products which
prove to be defective.
For warranty service or repair, this product must be returned to a service facility designated by Hewlett-Packard (HP). Buyer shall pre-
pay shipping charges to HP and HP shall pay shipping charges to return the product to Buyer. However, Buyer shall pay all shipping
charges, duties, and taxes for products returned to HP from another country.
HP warrants that its software and firmware designated by HP for use with a product will execute its programming instructions when
properly installed on that product. HP does not warrant that the operation of the product, or software, or firmware will be uninterrupted
or error free.
Limitation Of Warranty
The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by Buyer, Buyer-supplied prod-
ucts or interfacing, unauthorized modification or misuse, operation outside of the environmental specifications for the product, or im-
proper site preparation or maintenance.
The design and implementation of any circuit on this product is the sole responsibility of the Buyer. HP does not warrant the Buyer’s
circuitry or malfunctions of HP products that result from the Buyer’s circuitry. In addition, HP does not warrant any damage that oc-
curs as a result of the Buyer’s circuit or any defects that result from Buyer-supplied products.
NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. HP SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
Exclusive Remedies
THE REMEDIES PROVIDED HEREIN ARE BUYER’S SOLE AND EXCLUSIVE REMEDIES. HP SHALL NOT BE LIABLE
FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER BASED ON CON-
TRACT, TORT, OR ANY OTHER LEGAL THEORY.
Notice
The information contained in this document is subject to change without notice. HEWLETT-PACKARD (HP) MAKES NO WAR-
RANTY OF ANY KIND WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WAR-
RANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. HP shall not be liable for errors contained
herein or for incidental or consequential damages in connection with the furnishing, performance or use of this material. This docu-
ment contains proprietary information which is protected by copyright. All rights are reserved. No part of this document may be photo-
copied, reproduced, or translated to another language without the prior written consent of Hewlett-Packard Company. HP assumes no
responsibility for the use or reliability of its software on equipment that is not furnished by HP.
U.S. Government Restricted Rights
The Software and Documentation have been developed entirely at private expense. They are delivered and licensed as "commercial
computer software" as defined in DFARS 252.227-7013 (October 1988), DFARS 252.211.7015 (May 1991) or DFARS 252.227-7014
(June 1995), as a "commercial item" as defined in FAR 2.101(a), or as "Restricted computer software" as defined in FAR 52.227-19
(June 1987) (or any equivalent agency regulation or contract clause), whichever is applicable. You have only those rights provided for
such Software and Documentation by the applicable FAR or DFARS clause or the HP standard software agreement for the product involved.
HP E1418A User’s Manual
Edition 2
Copyright © 1996 Hewlett-Packard Company. All Rights Reserved.
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Documentation History
All Editions and Updates of this manual and their creation date are listed below. The first Edition of the manual is Edition 1. The Edi-
tion number increments by 1 whenever the manual is revised. Updates, which are issued between Editions, contain replacement pages
to correct or add additional information to the current Edition of the manual. Whenever a new Edition is created, it will contain all of
the Update information for the previous Edition. Each new Edition or Update also includes a revised copy of this documentation his-
tory page.
Edition 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . October 1995
Edition 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . October 1996
Safety Symbols
Instruction manual symbol affixed to prod-
Alternating current (AC).
Direct current (DC).
uct. Indicates that the user must refer to the
manual for specific WARNING or CAU-
TION information to avoid personal injury
or damage to the product.
Indicates hazardous voltages.
Indicates the field wiring terminal that must
be connected to earth ground before operat-
ing the equipment—protects against electri-
cal shock in case of fault.
Calls attention to a procedure, practice, or
condition that could cause bodily injury or
death.
WARNING
CAUTION
Calls attention to a procedure, practice, or con-
dition that could possibly cause damage to
equipment or permanent loss of data.
Frame or chassis ground terminal—typi-
cally connects to the equipment’s metal
frame.
or
WARNINGS
The following general safety precautions must be observed during all phases of operation, service, and repair of this product.
Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design,
manufacture, and intended use of the product. Hewlett-Packard Company assumes no liability for the customer’s failure to
comply with these requirements.
Ground the equipment: For Safety Class 1 equipment (equipment having a protective earth terminal), an uninterruptible safety earth
ground must be provided from the mains power source to the product input wiring terminals or supplied power cable.
DO NOT operate the product in an explosive atmosphere or in the presence of flammable gases or fumes.
For continued protection against fire, replace the line fuse(s) only with fuse(s) of the same voltage and current rating and type.
DO NOT use repaired fuses or short-circuited fuse holders.
Keep away from live circuits: Operating personnel must not remove equipment covers or shields. Procedures involving the removal
of covers or shields are for use by service-trained personnel only. Under certain conditions, dangerous voltages may exist even with the
equipment switched off. To avoid dangerous electrical shock, DO NOT perform procedures involving cover or shield removal unless
you are qualified to do so.
DO NOT operate damaged equipment: Whenever it is possible that the safety protection features built into this product have been im-
paired, either through physical damage, excessive moisture, or any other reason, REMOVE POWER and do not use the product until
safe operation can be verified by service-trained personnel. If necessary, return the product to a Hewlett-Packard Sales and Service Of-
fice for service and repair to ensure that safety features are maintained.
DO NOT service or adjust alone: Do not attempt internal service or adjustment unless another person, capable of rendering first aid
and resuscitation, is present.
DO NOT substitute parts or modify equipment: Because of the danger of introducing additional hazards, do not install substitute
parts or perform any unauthorized modification to the product. Return the product to a Hewlett-Packard Sales and Service Office for
service and repair to ensure that safety features are maintained.
8
HP E1418A User’s Manual
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Declaration of Conformity
according to ISO/IEC Guide 22 and EN 45014
Manufacturer’s Name:
Hewlett-Packard Company
Loveland Manufacturing Center
Manufacturer’s Address:
815 14th Street S.W.
Loveland, Colorado 80537
declares, that the product:
Product Name:
Model Number:
Product Options:
8/16-Channel D/A Converter Module
HP E1418A
All
conforms to the following Product Specifications:
Safety:
IEC 1010-1 (1990) Incl. Amend 1 (1992)/EN61010-1 (1993)
CSA C22.2 #1010.1 (1992)
UL 3111
EMC:
CISPR 11:1990/EN55011 (1991): Group 1 Class A
IEC 801-2:1991/EN50082-1 (1992): 4 kVCD, 8 kVAD
IEC 801-3:1984/EN50082-1 (1992): 3 V/m
IEC 801-4:1988/EN50082-1 (1992): 1 kV Power Line
.5 kV Signal Lines
Supplementary Information: The product herewith complies with the requirements of the Low Voltage
Directive 73/23/EEC and the EMC Directive 89/336/EEC (inclusive 93/68/EEC) and carries the "CE" marking
accordingly.
Tested in a typical HP C-Size VXI Mainframe configuration.
November 6, 1995
Jim White, QA Manager
European contact: Your local Hewlett-Packard Sales and Service Office or Hewlett-Packard GmbH,
Department HQ-TRE, Herrenberger Straße 130, D-71034 Böblingen, Germany (FAX +49-7031-14-3143).
HP E1418A User’s Manual
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Notes
10 HP E1418A User’s Manual
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12 HP E1418A User’s Manual
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Chapter 1
Module Setup and Installation
Using This Chapter
This chapter provides general module information and tasks you must
perform to install and prepare your module. A procedure to verify your
installation is also given. The chapter is divided into the following sections:
• Module Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 13
• Functional Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 16
• Front Panel Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 18
• Setting the Logical Address Switch. . . . . . . . . . . . . . . . . . . . Page 19
• Module Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 20
• Terminal Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 22
• Wiring the Terminal Module . . . . . . . . . . . . . . . . . . . . . . . . . Page 23
• Attaching the Terminal Module. . . . . . . . . . . . . . . . . . . . . . . Page 25
• Removing the Terminal Module . . . . . . . . . . . . . . . . . . . . . . Page 26
• Terminal Module Options . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 27
• Terminal Module Connectors . . . . . . . . . . . . . . . . . . . . . . . . Page 30
• Configuring the Terminal Module. . . . . . . . . . . . . . . . . . . . . Page 31
• Terminal Module Connections . . . . . . . . . . . . . . . . . . . . . . . Page 33
• Initial Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 37
Module Description
The HP E1418A is an 8 or 16 channel digital-to-analog converter module
for use in a VXIbus C-size mainframe. The module is a register-based
device. The module can be programmed via direct register access or, with
the appropriate driver, by high level commands. This manual describes
programming the module using SCPI (Standard Commands for
Programmable Instruments) and the SCPI driver.
Each HP E1418A module is a unique instrument having its own output
buffer and error queue. Multiple modules cannot be combined into a single
instrument.
Each channel can be configured to either voltage or current output mode.
When configured for voltage output, voltages in the range of -16.0 to
+16.0 Volts can be set. When configured for current output, current in the
range of -0.02 to + 0.02 Amps can be set. The channel output mode can be
programmatically set, or, can be forced to either voltage or current by
mechanical jumpers on the terminal module.
Chapter 1
Module Setup and Installation 13
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Each output channel is individually configurable to be either an isolated
output or a non-isolated output. Channel configuration to isolated or
non-isolated is made by individual plug-on modules for each channel.
Figure 1-1 shows the module.
Figure 1-1. The HP E1418A 8/16-Channel D/A Converter
with Terminal Module
14 Module Setup and Installation
Chapter 1
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Ordering Options The HP E1418A may be ordered from Hewlett-Packard in a variety of
configurations. As ordered, the module has the following options:
Description
HP E1418A
8-Channel D/A Converter with Non-Isolated Outputs
16-Channel D/A Converter with Non-Isolated Outputs
8-Channel D/A Converter with Isolated Outputs
16-Channel D/A Converter with Isolated Outputs
HP E1418A Option 001
HP E1418A Option 002
HP E1418A Option 003
Field Kits The module can also be user configured as described beginning on page 166
of this manual. The following field expansion and configuration kits are
available:
Description
Use
HP E1523A Single Channel Isolated To change a single channel from
plug-on module non-isolated to isolated output.
HP E1524A Expansion kit, 8-Channel To add 8 additional non-isolated
Non-Isolated Outputs
channels to an existing 8-channel
module.
HP E1525A Expansion kit, 8-Channel To add 8 additional isolated channels to
Isolated Outputs an existing 8-channel module.
Terminal Modules The standard HP E1418A Terminal Module provides screw terminals for
connections. Two other terminal options are available with the HP E1418A:
– Crimp and Insert (Option A3E)
– Ribbon Cable (Option A3H)
– Terminal Module Housing without a terminal module PC board or
connectors included (Option 135)
Chapter 1
Module Setup and Installation 15
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Functional Description
The HP E1418A provides great flexibility in configuration. This functional
description will help you become familiar with the various configurations
and how the module is structured. A functional block diagram is shown in
Figure 1-2.
Figure 1-2. A Functional Block Diagram
* Each channel MUST have either an isolated or non-isolated plug-on module installed. Channels may be configured
using any combination of Isolated and Non-Isolated plug-on modules.
16 Module Setup and Installation
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As shown, there are four major assemblies that make up an HP E1418A:
– Channels 1 through 8 main board and VXIbus backplane circuitry.
– Channels 9 through 16 expansion board.
– Isolated or Non-isolated plug-on modules.
– Terminal Module.
Channels 1–8 main board and VXIbus backplane circuitry.
This assembly contains all the VXIbus interface and decoding circuitry.
Isolated and Non-Isolated plug-on modules for channels 1–8 connect to this
assembly. The panel connectors for the terminal module are also mounted
on this assembly.
The optional Channels 9–16 expansion board is electrically connected and
mechanically mounted to the main board. Isolated and Non-Isolated
plug-on modules for channels 9–16 connect to this assembly.
Isolated or Non-isolated plug-on modules are required for every channel.
Eight plug-on modules mount to the main board and 8 plug-on modules
mount to the expansion board. Any combination of isolated or non-isolated
plug-on modules may be used, but every channel must have a plug-on
module installed.
The Terminal Module shown in Figure 1-2 is the standard screw-type
terminal module. This module provides screw connections for each channel
output, the calibration connections, and the external trigger in connections.
This module also contains two jumpers for each channel; one, called the P/J
Jumper, to enable or disable VXIbus programming of the channel mode
(either voltage or current) and one, called the V/I Jumper, to set the channel
mode when the P/J Jumper is in the Jumper position.
Chapter 1
Module Setup and Installation 17
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Front Panel Connectors
Figure 1-3 shows the connections at the front panel connectors of the main
module.
Figure 1-3. HP E1418A Front Panel Connector Pinout
18 Module Setup and Installation
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Setting the Logical Address Switch
Figure 1-4 shows the logical address switch location and setting. The logical
address switch factory setting is 72. Valid addresses range from 1 to 255.
When used with an HP Command Module the factory set address of
decimal 72 results in a module address of 9 (72 divided by 8). The module
address is used as a secondary address when using HP-IB and a Command
Module. For example, the module address may be 7 09 09, where 7 is the
HP-IB interface address, 09 is the command module address, and 09 is the
HP E1418A address.
The HP E1418A supports dynamic address configuration. When you set the
logical address to 255, the resource manager sets the logical address
programmatically.
Note
When using an HP C-size mainframe with the HP E1405/E1406 Command
Modules, the logical address setting must be a multiple of 8.
Figure 1-4. Setting the Logical Address
Chapter 1
Module Setup and Installation 19
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Module Installation
To install the module:
1. Verify the position of the CAL Store Enable Jumper for your
application. The Jumper, as shipped, is in the CAL position. In this
position, a calibration may be performed and the results stored in
non-volatile memory. In the Secured position, a calibration may be
performed, but may NOT be stored in non-volatile memory. This
jumper is described in more detail on page 156.
2. Verify or set the logical address switch as shown in Figure 1-4.
3. Install the module in a mainframe as shown in Figure 1-5.
Installation in a The HP E1418A may be installed in any slot (except slot 0) in a C-size
VXIbus mainframe. To install in a mainframe:
Mainframe
1. Set the extraction levers out. Slide the module into any slot (except
slot 0) until the backplane connectors touch.
2. Seat the module by moving the levers toward each other.
3. Tighten the top and bottom screws to secure the module in the
mainframe.
Figure 1-5. Installing the HP E1418A in a VXIbus Mainframe
20 Module Setup and Installation
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To Remove a Module: To remove a module from a mainframe:
1. Remove any terminal modules.
2. Loosen the top and bottom screws securing the module in the
mainframe.
3. Move the extraction levers away from each other. As the levers are
moved, the module will detach from the backplane connectors.
4. Slide the module out.
Note
The extraction levers will not seat and unseat the backplane connectors on
older HP VXIbus mainframes and non-HP mainframes. You must
manually seat the connectors by pushing the module into the mainframe
until the front panel is flush with the front of the mainframe. The extraction
levers may be used to guide or remove the module.
Chapter 1
Module Setup and Installation 21
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Terminal Modules
Four terminal modules are available for the HP E1418A; a screw-type, a
crimp-and-insert type, a ribbon cable type, and an empty terminal housing
(without a PC board or connectors).
Screw-Type The standard terminal module uses screw-type terminals to make
connections. Figure 1-6 may be photocopied and used for wiring layout.
Terminal Module
(Standard)
Figure 1-6. Screw-Type Terminal Module Layout
22 Module Setup and Installation
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Wiring the Terminal Module
Figure 1-7 shows how to open and wire the HP E1418A terminal module.
Figure 1-7. Wiring the HP E1418A Terminal Module
(continued on next page)
Chapter 1
Module Setup and Installation 23
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Figure 1-7. Wiring the HP E1418A Terminal Module
(continued from previous page)
24 Module Setup and Installation
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Attaching the Terminal Module
Figure 1-8 shows how to attach the HP E1418A terminal module.
Figure 1-8. Attaching the HP E1418A Terminal Module
Chapter 1
Module Setup and Installation 25
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Removing the Terminal Module
Figure 1-9 shows how to remove the HP E1418A terminal module.
Figure 1-9. Removing the HP E1418A Terminal Module
26 Module Setup and Installation
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Terminal Module Options
Besides the standard screw-type terminal module, the HP E1418A can be
ordered with the following two options. One option (A3E) provides
crimp-and-insert connectors and terminal housing. The other option (A3H)
provides a ribbon cable connector and terminal housing.
Option A3E HP E1418A Option A3E can be ordered if a crimp-and-insert terminal
module is desired. This allows you to crimp connectors onto wires which
are then inserted directly into the HP E1418A faceplate connector. Refer to
the pin-out diagram on page 30 to make the connections. The
crimp-and-insert connector is shown in Figure 1-10.
Note
The pin numbering on the crimp-and-insert connector may not agree with the
pin numbering on the HP E1418’s faceplate connector. Use the pin
numbering on the faceplate connector to wire the crimp-and-insert connector.
Figure 1-10. Option A3E Crimp-and-Insert Connector
Chapter 1
Module Setup and Installation 27
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Crimp-and-Insert The following accessories are necessary for use with crimp-and-insert
Option A3E:
Terminal Module
Accessories
Single-Conductor and A crimp-and-insert contact is crimped onto one end of a wire. The other
end is not terminated. Order HP 91510A.
Contact
Shielded-Twisted-Pair and A crimp-and-insert contact is crimped onto each conductor at one end of a
shielded-twisted-pair cable. The other end is not terminated. Order
HP 91511A.
Contacts
Jumper Wire and Contacts A crimp-and-insert contact is crimped onto each end of a single-conductor
jumper wire. This jumper is typically used to tie two pins together in a
single crimp-and-insert connector. Order HP 91512A.
Crimp-and-Insert Contacts These contacts may be crimped onto a conductor and then inserted into a
crimp-and-insert connector. The crimp tool kit is required to crimp the
contacts onto a conductor and remove the contact from the connector.
Order HP 91515A.
Crimp-and-Insert Tools The hand crimp tool (part number HP 91518A) is used for crimping
contacts onto a conductor. The pin extractor tool (part number HP 91519A)
is required for removing contacts from the crimp-and-insert connector.
These products are not included with Option A3E or with the terminal
option accessories listed earlier.
28 Module Setup and Installation
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Extra Crimp-and-Insert The crimp-and-insert connector is normally supplied with Option A3E.
Contact Hewlett-Packard if additional connectors are needed.
Order HP 91484B.
Connectors
Option A3H The Ribbon Cable Connector Terminal Option provides a terminal housing
and ribbon cable connectors. The connectors are designed to be used with
64-pin 0.05 inch center ribbon cables (not provided). Use Figure 1-12 to
make the connections.
Note
In Figure 1-12, the center row of each connector is not used in the ribbon
cable. The center row of both connectors is module ground (GND).
Figure 1-11. Option A3H Ribbon Cable Connector
Option 135 The Terminal Module Housing Option provides a terminal housing with no
connectors of any type.
The user-supplied connector must be a DIN 41612 type C female,
11.6 mm dimension as shown above.
Chapter 1
Module Setup and Installation 29
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Terminal Module Connectors
Figure 1-12 shows the connections at the terminal module connectors.
Figure 1-12. HP E1418A Terminal Module Connector Pinout
30 Module Setup and Installation
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Configuring the Terminal Module
The screw-type terminal module contains jumpers that control how the
HP E1418A operates. The jumpers are shipped in a separate bag with the
terminal module. The HP E1418A will operate without any jumpers
installed. You can, however, store the jumpers on the terminal module for
later reconfiguration. Figure 1-13 shows the jumper locations and example
settings.
There are two jumpers for each channel; a P/J jumper and a V/I jumper.
The two jumpers work together.
Figure 1-13. P/J and V/I Jumpers
P/J Jumper The P/J jumper sets the channel output mode to be either Program
Selectable or Jumper Selectable. When the jumper is in the program
selectable position, the channel output mode can be set via programming
commands. In the jumper selectable position, the channel output mode is
set via the V/I jumper.
V/I Jumper The V/I jumper sets the channel output mode to either voltage or current
when the P/J jumper is set to the Jumper Selectable position. When the P/J
jumper is set to Program Selectable, this jumper has no effect.
Notes
With no jumpers installed, the module will be in the Program Selectable
output mode.
When the P/J Jumper is set to the Jumper Selectable position, the output
mode cannot be changed with SCPI commands. The output mode following
a *RST common command will be the mode set by the V/I jumper.
Chapter 1
Module Setup and Installation 31
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Options A3E and A3H The P/J jumper connection for each channel is named CH X PRGM JMPR
in the connection diagram on page 30. With no connection to this pin, the
module will operate in the Program Selectable mode. Shorting this pin to
GND will set the Jumper Selectable mode for channel X.
Terminals
When CH X PRGM JMPR is shorted to GND, the CH X MODE JMPR pin
(corresponding to the V/I Jumper) sets the output mode for channel X. If
the pin is open, voltage output mode is selected. If the pin is shorted to
GND, current output mode is selected for channel X.
32 Module Setup and Installation
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Terminal Module Connections
Each channel has four output lines; HI, LO, HS (Hi Sense), and LS (Low
Sense). When using a channel in the voltage output mode, you can use the
sense lines to increase accuracy or to compensate for long lead lengths. The
sense leads are not used in the current output mode.
Voltage and Figure 1-14 shows connections for three types of output. Channel 1 is
connected in the 2-wire voltage output mode, the sense leads are not used
(and the sense connections need not be made). Channel 2 is connected in
the 4-wire voltage output mode. Use this connection for the highest voltage
Current Output
Connections
accuracy and to compensate for long lead lengths. Channel 3 is connected
for current output mode (sense is not used for current output).
Note
The sense leads are internally disconnected for current output. External
wiring may be left connected to the sense outputs on the terminal module
with no effect.
Figure 1-14. Typical Output Connections
Options A3E and A3H HI, HS, LO, and LS connections are shown on the diagram on page 30.
Terminals
Chapter 1
Module Setup and Installation 33
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Combining You can combine channels in series to obtain higher output voltages or in
parallel to obtain higher output currents.
Channels
Channels in Series
• All channels connected in series MUST be configured as isolated
channels (with isolated plug-on modules installed).
• Up to 3 channels may be combined, but the output voltage MUST
NOT exceed 42 Vdc/42 Vpeak.
Channels in Parallel
• Channels may be either Isolated or Non-Isolated.
• Up to 16 channels may be combined.
Figure 1-15 shows how to combine voltage channels (in series) and current
channels (in parallel).
CAUTIONS
All SERIES CONNECTED output channels MUST be configured as
ISOLATED OUTPUTS.
When combining output voltage channels, be sure not to exceed the
maximum module isolation rating of 42 Vdc or 42 Vpeak.
Figure 1-15. Combined Channels Output Connections
34 Module Setup and Installation
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Connecting an An external trigger input is provided on the terminal module. Use the
external trigger to externally synchronize multiple outputs or multiple
instruments. The External Trigger uses TTL levels. The trigger occurs
when the EXT TRIGn connection is pulled low for at least 1 µS. Typical
connections to the external trigger is shown in Figure 1-16.
External Trigger
Source
Figure 1-16. External Trigger Connections
Options A3E and A3H The external trigger line is located on the upper connector and is labeled
EXT TRIGn in the diagram on page 30.
Terminals
Chapter 1
Module Setup and Installation 35
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Using the CAL The CAL Output Terminals provide one set of connections that can be used
to calibrate the output on all 16 channels. Calibration and adjustment
procedures are described in Appendix D beginning on page 154.
Output Terminals
The CAL output terminals are available on the terminal module. There are
four lines; HI, LO, HS (Hi Sense), and LS (Low Sense). Typical CAL
output terminal connections are shown in Figure 1-17.
Figure 1-17. Calbus Connections
Options A3E and A3H The CAL Output Terminals are located on the upper connector and are labeled
CAL HI, CAL HS, CAL LO, and CAL LS in the diagram on page 30.
Terminals
36 Module Setup and Installation
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Initial Operation
This section provides a programming example to help verify correct module
installation and operation. Additional programming examples and procedures
are given in the next chapter.
The examples shown here use HP BASIC and SCPI (Standard Commands for
Programmable Instruments). The example assumes a factory set logical
address of 72 for the HP E1418A module and uses an HP Command Module
for command interpretation. Examples in ANSI C are given in the next chapter.
Note
This discussion applies to SCPI programming using the driver provided
with the module. The SCPI commands are described in Chapter 3 of this
manual. Appendix B of this manual describes direct register access.
Device Driver The HP E1418A module is shipped a driver CD. This CD contains the SCPI
instrument driver, VXIplug&play drivers, example programs, and HP VIC
(VXI Installation Consultant). Follow the instructions contained on the CD to
properly install the device driver.
The following example shows how to query the command module and
verify that the correct device driver is installed:
10 DIM A$[256]
20 OUTPUT 70900;"DIAG:DRIV:LIST?"
30 ENTER 70900;A$
40 PRINT A$
50 END
In this example, the command module is located on HP-IB (interface address 7)
and uses a primary address of 09. Responses to this example vary depending
upon the drivers loaded on your system. A typical response might look like:
E1418,E1418,A.01.00,RAM;SWITCH,SWITCHBOX,A.08.00,RAM;
SYSTEM,E1405A,A.08.00,ROM;IBASIC,IBASIC,A.04.02,ROM;
VOLTMTR,E1326A,A.05.00,ROM;SWITCH,SWITCHBOX,A.07.00,
ROM;COUNTER,E1332A,A.04.02,ROM;COUNTER,E1333A,A.04.02,
ROM;DIG_I/O,E1330A,A.04.03,ROM;D/A,E1328A,A.04.02,ROM
Verify that the string “E1418,E1418,A.01.00,” is located somewhere
within the returned string.
Chapter 1
Module Setup and Installation 37
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Module This example can be used to verify that the logical address has been
correctly set, that the module is correctly installed, and that the module is
Identification
communicating with the command module. The terminal module does not
need to be installed for this example to work. This example queries the
module for the identification string.
10 DIM A$[256]
20 OUTPUT 70909;"*IDN?"
30 ENTER 70909;A$
40 PRINT A$
50 END
The response should be similar to one of the following:
HEWLETT-PACKARD,E1418A_8CH,xxxxAxxxx,A.01.00
or
HEWLETT-PACKARD,E1418A_16CH,xxxxAxxxx,A.01.00
The xxxxAxxxxportion of the response string is the module serial number.
38 Module Setup and Installation
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Chapter 2
Programming Examples
Using This Chapter
This chapter provides examples and descriptions of the most common
operations using the HP E1418A. Use this chapter to gain an overview of how
to program the module, and to obtain programming hints. The examples
shown in this chapter are in ANSI C and use SCPI commands to control the
module. The SCPI commands are described in detail in Chapter 3 of this
manual. SCPI usage conventions and syntax rules are described beginning on
page 60.
This chapter is divided into the following sections:
• Querying Module Identification and Configuration. . . . . . . . . Page 40
• APPLy Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 45
• Error Checking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 47
• SOURce Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 50
• Setting the Output Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 52
• Controlling the Output Relay. . . . . . . . . . . . . . . . . . . . . . . . . Page 53
• Triggering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 54
• Using *OPC? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 56
• Combining Output Channels . . . . . . . . . . . . . . . . . . . . . . . . . Page 57
Program Examples Example programs in ANSI C format are included on the driver CD
supplied with the HP E1418A. Most examples in this chapter are included.
The examples are ASCII files with the *.c extension.
Note
The int data type is system dependent. These examples were developed on
a system where int is a 16-bit integer. Other systems may define int to be a
different width.
In the examples, the HP VISA Transition Library is used for I/O operations
with the VXIbus. An HP command module (HP E1405/E1406) is used and
controlled via HP-IB.
To use the HP VISA Transition Library (abbreviated as VTL), include the
visa.h header file.
#include visa.h
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Hewlett-Packard VTL function calls and data types typically begin with the
lower case letters vi. Output and enter are performed with functions named
viPrintf and viScanf. Both these functions require a session (a VTL
defined I/O function) to uniquely identify the device being controlled. In
the examples, the session has been named dac.
Querying Module Identification and Configuration
This example will query the module for the identification string and
determine the module configuration.
The module identification is obtained using the IEEE-488 Command *IDN?.
!Send query to the module.
*IDN?
!Enter a string.
The string returned should be similar to one of the following:
HEWLETT-PACKARD,E1418A_8CH,xxxxAxxxxx,A.01.00
or
HEWLETT-PACKARD,E1418A_16CH,xxxxAxxxxx,A.01.00
The xxxxAxxxxxportion of the response string is the module serial
number.
The module configuration is obtained using the DIAGnostic:CONFiguration?
query.
!Send query to the module.
DIAG:CONF?
!Enter six integers and decode the integers.
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The DIAG:CONF? query returns six integers. The six integers returned
contain the module configuration and have the following meaning.
Integer
Returned
Meaning
1st
Expansion Board ID in the form: 0 = present, 7 = none
(expansion board contains channels 9 through 16)
2nd
3rd
Terminal Module ID in the form
0 = screw type, 7 = none or other
Isolated/Non-isolated Channel status
A bit set to 0 indicates an isolated channel
A bit set to 1 indicates a non-isolated channel or no plug-on
module installed (DO NOT operate the module without a plug-on
module)
Bits 0 – 15 correspond to channels 1 – 16, respectively*
4th
5th
6th
Channel Mode
A bit set to 0 indicates a current output channel
A bit set to 1 indicates a voltage output channel
Bits 0 – 15 correspond to channels 1 – 16, respectively*
Channel Output State
A bit set to 0 indicates the channel output relay is closed
A bit set to 1 indicates the channel output relay is open
Bits 0 – 15 correspond to channels 1 – 16, respectively*
Channel Mode Programmable State (P/J Jumper)
A bit set to 0 indicates a channel is not mode programmable
A bit set to 1 indicates a channel is mode programmable
Bits 0 – 15 correspond to channels 1 – 16, respectively*
* For 8-channel configurations, the upper 8 bits of integers 3, 4, 5, and 6 are set to 1’s.
For example, if the following six integers are returned, the module has the
configuration indicated.
Decimal
Value
Integer
Configuration
1st
7
No expansion board installed
(Only channels 1 through 8).
2nd
7
No Terminal Module installed or
unknown terminal module installed.
3rd
4th
5th
-1
-1
-1
All channels are non-isolated.
All channels are voltage output channels.
All channel outputs are disabled
(all output relays are open).
6th
-1
All channels are output mode
programmable.
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Configuration The following program segment demonstrates how to read the module
identification string and the configuration. The configuration integers are
bit manipulated using the C operator for bit shifting result = result <<1
Example
(a one bit shift to the left).
•
•
•
/** FUNCTION PROTOTYPES **/
void main (void);
void err_handler(ViSession vi, ViStatus x);
void sys_err(ViSession resource);
/* VTL error routine
/* Checks for SCPI programming errors */
*/
/** GLOBAL **/
ViStatus err;
ViSession defaultRM, cmd, dac;
•
•
•
void main (void)
{
int i,num_chan,result = {0},config [6]={0};
char buf[256] = { 0 };
/*** Check the module identification
***/
err=viPrintf(dac, “*IDN?\n”);
err=viScanf(dac, “%t”, &buf);
/* request id from the module */
/* enter string returned
/* print the result
*/
*/
printf (“Module is identified as a %s\n”, buf);
/*** Get the module configuration
err=viPrintf(dac, “DIAG:CONF?\n”); /* request module configuration */
***/
err=viScanf(dac, “%,6d”, &config); /* returns six integers
*/
/* Decode the first integer */
result=config[0]; /* Expansion board */
if (result < 7)
{
printf (“Module is a 16 channel device\n”);
num_chan = 16;
}
else
{
printf (“Module is an 8 channel device\n”);
num_chan=8;
}
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/* Decode the second integer */
result = config [1];
/* Terminal Module */
if (result > 0)
{
printf (“Module does NOT have a terminal module installed\n”);
}
else
{
printf (“Module has a screw-type terminal module installed\n”);
}
/* Decode the third integer */
result=config[2];
/* Isolated or non-isolated outputs */
if (num_chan < 9) result = result << 8; /* strip upper 8 bits */
for (i=num_chan;i>0;i – –)
{
if (result >= 0x8000)
{
printf (“Channel %d is configured for non-isolated output\n”,i);
}
else
{
printf(“Channel %d is configured for isolated output\n”,i);
}
result = result << 1;
}
/* Decode the fourth integer */
result=config[3];
/* Output Mode Voltage or Current */
if (num_chan < 9) result = result << 8; /* strip upper 8 bits */
for (i=num_chan;i>0;i – –)
{
if (result >= 0x8000)
{
printf (“Channel %d is set to voltage output mode\n”,i);
}
else
{
printf(“Channel %d is set to current output mode\n”,i);
}
result = result << 1;
}
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/* Decode the fifth integer */
result=config[4];
/* Channel relay open or closed */
if (num_chan < 9) result = result << 8; /* strip upper 8 bits */
for (i=num_chan;i>0;i – –)
{
if (result >= 0x8000)
{
printf (“Channel %d output is disabled\n”,i);
}
else
{
printf(“Channel %d output is enabled\n”,i);
}
result = result << 1;
}
/* Decode the sixth integer */
result=config[5];
/* P/J Jumper position */
if (num_chan < 9) result = result << 8; /* strip upper 8 bits */
for (i=num_chan;i>0;i – –)
{
if (result >= 0x8000)
{
printf (“Channel %d output mode is programmable\n”,i);
}
else
{
printf(“Channel %d output mode is fixed and jumper selected\n”,i);
}
result = result << 1;
}
•
•
•
}
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APPLy Output
The APPLyn subsystem commands provide the easiest method to output
voltages or currents.
/* Set channel 1 for 5.0 Volt output */
APPLy1:VOLTage 5.000
/* Channel is set to voltage output and 5.000 V applied */
/* Set channel 8 for 10 mA output */
APPLy8:CURRent 0.0100
/* Channel is set to current output and 10 mA applied */
The APPLyn subsystem outputs the voltage or current specified on the
channel specified immediately. The output relay for that channel is closed.
Other channel outputs and output states are not disturbed.
An APPLyn subsystem command performs several actions with a single
command. Each APPLyn command affects a single channel and:
– Sets the channel output mode (voltage or current).
– Sets the output value (volts or amps).
– Enables the outputs (closes the output relay).
The output channel remains enabled, and outputs the last programmed
voltage or current value, unless you take explicit action to turn off the
output. For example, if you send two APPLyn commands to the same
channel, the first command sets an output value and closes the output relay.
The second command changes only the output value (since the relay is
already closed).
/* Set channel 1 for 5.0 Volt output */
APPLy1:VOLTage 5.000
/* Channel 1 is set to voltage output and 5.000 V applied */
/* Now set channel 1 for 6.0 Volt output */
APPLy1:VOLTage 6.000
/* Channel 1 is set to voltage output and 6.000 V applied */
The commands above will set a 5.000 Volt output on Channel 1, and then
set a 6.000 Volt output on channel 1. The output relay is not affected by the
second command.
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The output can also be disabled before changing the mode or output value.
Use the OUTPutn commands to disable the output.
/* Set channel 1 for 5.0 Volt output */
APPLy1:VOLTage 5.000
/* Disable the output */
OUTPut1 OFF
/* Channel 1 output relay is opened */
/* Now, enable the output */
OUTPut1 ON
/* Channel 1 is set to voltage output and 5.000 V applied */
/* Disable the output */
OUTPut1 OFF
/* Now set channel 1 for 20 mA current output */
APPLy1:CURRent .0200
/* Channel 1 is set to current output and 20 mA applied */
The OUTPut subsystem commands only affect the output relay. The
programmed mode and output value for a given channel is not changed.
Once the mode is set and the desired output value programmed, the output
can be turned on or off as needed with the OUTPutn[:STATe] command.
It is also possible, with the APPLyn commands, to change the channel
output mode from voltage to current.
/* Set channel 1 for 5.0 Volt output */
APPLy1:VOLTage 5.000
/* Channel 1 is set to voltage output and 5.000 V applied */
/* Now set channel 1 for 20 mA current output */
APPLy1:CURRent .0200
/* Channel 1 is set to current output and 20 mA applied */
During the change from voltage to current (or current to voltage), the
channel output relay is opened. Sending a command sequence similar to the
one above performs the following actions:
– Programs channel 1 to the voltage mode and 5.000 Volts output.
– Closes the channel 1 output relay.
– Opens the channel 1 output relay.
– Programs channel 1 to current mode and 20 mA output.
– Closes the channel 1 output relay.
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Error Checking
To develop programs you will need to create one or more error checking
routines. For example, you will need routines to check for errors in the
following operations:
– I/O operations to the VXIbus, and
– SCPI commands to the module.
I/O Error Checking I/O error checking is specific to the type of I/O library you are using to
communicate with the VXIbus. In this manual and on the CD, the
HP VISA Transition Library is used.
Function calls to the HP VISA Transition Library (VTL) typically begin
with a lower case vi. For example, viPrintf is a VTL output function call.
The HP VTL I/O function calls return a variable that can be tested for errors
against the VTL variable VI_SUCCESS. In the examples, the variable err
is used to trap the VTL errors and is declared as a global variable of the
ViStatus type (defined in visa.h).
I/O error checking is illustrated in the following program example. The
VTL error checking function is named error_handler. Errors found are
reported to the standard output device.
SCPI Error You must also check for errors reported by the SCPI driver. The SCPI
driver reports errors in response to the SYSTem:ERRor? query.
Checking
/* Repeat …
*/
SYST:ERR?
/* … until no errors found */
The query returns two values: an integer error code and an error description
string. The integer value returns +0and the string returns “NoError” if
no errors are found.
SCPI errors are reported in an error queue. The error queue is a first in, first
out queue. Each response to the SYSTem:ERRor? query removes one error
from the queue. Multiple SCPI errors may be generated by a single
incorrect command and the error queue should be read until it reports +0,
"No Error".
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SCPI error checking is illustrated in the following program example. The
SCPI error routine is named sys_error. Errors found are reported to the
standard output device.
•
•
•
/** FUNCTION PROTOTYPES **/
void main (void);
void err_handler(ViSession vi, ViStatus x); /* VTL error routine
*/
*/
void sys_err(ViSession resource);
/* SCPI error routine
•
•
•
/** GLOBAL **/
ViStatus err;
ViSession defaultRM, cmd, dac;
•
•
•
void main (void)
{
/*** Open the resource manager, command module, and dac sessions ***/
viOpenDefaultRM (&defaultRM);
viOpen (defaultRM, CMD_ADDRESS, VI_NULL, VI_NULL, &cmd);
viOpen(defaultRM, DAC_ADDRESS, VI_NULL, VI_NULL, &dac);
/*** Set the timeout for the dac ***/
viSetAttribute(dac, VI_ATTR_TMO_VALUE, 10000); /* 10 second timeout */
err=viPrintf(dac, “*RST\n”);
if(err < VI_SUCCESS) err_handler(dac, err); /* VTL error check */
sys_err (dac); /* SCPI error check */
/* reset the dac */
•
•
•
}
/***VTL Error handling function ***/
void err_handler (ViSession dac, ViStatus err)
{
char buf[1024]={0};
viStatusDesc(dac,err,buf);
printf(“VTL ERROR = %s\n”, buf);
return;
}
/***End of VTL error handler ***/
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•
•
•
/*** SCPI Error check
***/
void sys_err(ViSession resource)
{
char buf [1024] = {0};
int err_no;
err = viPrintf (resource, “SYST:ERR?\n”);
if (err < VI_SUCCESS) err_handler(resource,err);
err = viScanf (resource,"%d%t",&err_no,&buf);
if (err < VI_SUCCESS) err_handler(resource,err);
while (err_no != 0)
/* query error queue
*/
/* get error number and string */
{
printf (“\nCommand Error: %d,%s\n”,err_no,buf);
err = viPrintf (resource, “SYST:ERR?\n”);
if (err < VI_SUCCESS) err_handler(resource,err);
err = viScanf (resource,"%d%t",&err_no,&buf);
if (err < VI_SUCCESS) err_handler(resource,err);
}
/* query error queue
*/
/* get error number and string */
return;
}
/*** End of SCPI error check ***/
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SOURce Output
Setting an output on a channel is a three step process:
– Set the channel mode (voltage or current)
– Set the channel output value (volts or amps)
– Enable the output (close the channel output relay)
As described previously, a single APPLyn command performs all three of
these actions. In some cases you may need more control of each step in the
output process. The following commands perform the same action as a
single APPLyn command.
/* Set channel 1 voltage mode */
SOURce1:FUNCtion:MODE VOLTage
/* Channel 1 is set to voltage output */
/* Set channel 1 voltage output */
SOURce1:VOLTage 5.000
/* Channel 1 is set to output 5.000 Volts */
/* Turn on the output */
OUTPut1 ON
/* Channel 1 output is enabled */
The SOURcen subsystem contains two types of commands to set current or
voltage output. The type used in the above examples has the form:
SOURcen:CURRent[:LEVel][:IMMediate][:AMPLitude] <value>
SOURcen:VOLTage[:LEVel][:IMMediate][:AMPLitude] <value>
The implied commands (enclosed in brackets [ ]) are not shown in the
examples. The commands shown above immediately program the output
values. The SOURcen subsystem also contains commands of the form:
SOURcen:CURRent[:LEVel]:TRIGgered[:AMPLitude] <value>
SOURcen:VOLTage[:LEVel]:TRIGgered[:AMPLitude] <value>
These commands are used with the trigger system to control when the
outputs are applied. The trigger system is described on page 54.
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Like the APPLyn commands, you can change the output value by sending
additional SOURcen commands. Changing the output value with the
SOURcen commands does not open the output relay.
/* Set channel 1 voltage mode */
SOURce1:FUNCtion:MODE VOLTage
/* Set channel 1 voltage output */
SOURce1:VOLTage 5.000
/* Turn on the output */
OUTPut1 ON
/* Channel 1 output is enabled */
/* Send a new output voltage */
SOURce1:VOLTage 15.000
Changing the output mode with the SOURcen commands opens the output
relay.
/* Set channel 1 voltage mode */
SOURce1:FUNCtion:MODE VOLTage
/* Set channel 1 voltage output */
SOURce1:VOLTage 5.000
/* Turn on the output */
OUTPut1 ON
/* Channel 1 output is enabled and 5 volts applied */
/* Send a new output mode */
SOURce1:FUNCtion:MODE CURRent
/* Channel 1 output is disabled */
/* Set channel 1 output current */
SOURce1:CURRent .01
/* Channel 1 is programmed for 10 mA */
/* Turn on the output */
OUTPut1 ON
/* Channel 1 output is enabled and 10 mA applied */
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Setting the Output Mode
The output mode can be set using commands in the SOURce subsystem.
SOURcen:FUNCtion:MODE VOLTage
SOURcen:FUNCtion:MODE CURRent
The mode can also be set on the terminal module with the P/J jumpers and
V/I jumpers (see page 31). If the mode is set to Jumper selectable with the
P/J jumper on the terminal module, the mode cannot be changed with the
SCPI commands and the output mode is set by the V/I jumper (also on the
terminal module, see page 31).
For example, if on the terminal module, channel 1 P/J jumper is set to
Jumper Selectable and the V/I jumper is set to current mode, the following
command will each generate an error:
SOURce1:FUNCtion:MODE VOLT
The error returned is:
+3012Channelcannotbeprogrammedtothismode, checkjumpers
Appendix C, starting on page 150 contains a full list of the errors that may
be generated by the SCPI commands for the HP E1418A.
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Controlling the Output Relay
There are three programming methods to enable the output of a channel
(close the output relay).
• The APPLyn:VOLTage <value> or APPLyn:CURRent <value>
command both program an output value and close the output relay
on a single channel.
• The OUTPutn:STATe ON command closes the output relay for a
single channel. The last programmed mode and output value remains
in effect.
• The DIAGnostic:OUTPut:ALL:STATe ON command closes all output
relays. The order of relay closure is not guaranteed.
There are three programming methods to disable the output of a channel
(open the output relay).
• Send the OUTPutn:STATe OFF command to open a single channel
output relay without changing the programmed mode or output value
for that channel or affecting any other channels.
• Send *RST to program all channels to voltage mode, 0 volts output,
and open all output relays. *RST will not change the output mode if
the P/J jumper is set to Jumper Selectable.
• Send the DIAGnostic:OUTPut:ALL OFF command to open all output
relays without changing the programmed mode or output value.
The output relay will also be opened and then closed by a change of output
mode using the APPLy commands.
• An APPLyn:VOLTage <value> followed by an
APPLyn:CURRent <value> command (or vice versa) will open and
then close the output relay.
All output relays will be opened, and left open, by the following commands.
• The SOURcen:FUNCtion:MODE VOLTage or
SOURcen:FUNCtion:MODE CURRent commands set output mode
for a single channel and opens the output relay for that channel.
Other channels are not affected.
• The *RST command performs a reset and leaves the output relays
open on all channels (the command also programs all channels to
voltage mode, 0 volts output unless the P/J jumper is set to Jumper
Selectable).
• The *TST? command performs a self-test and leaves the output
relays open on all channels. Programmed output modes are restored
following the self-test.
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Triggering
To synchronize outputs to external events, backplane events, or software
events use the TRIGger subsystem commands. Triggering an output from
the module involves four steps:
1. Set the trigger source.
2. Set one or more channels for triggered output.
3. Put the trigger system in the wait-for-trigger state.
4. Send the trigger event.
The TRIGger:SOURce <source> command sets the trigger source. One of
four trigger sources can be specified.
• VXIbus backplane trigger — one of the eight TTL trigger lines
defined in the VXIbus P2 connector. The lines are named
*TTLTRG0 through *TTLTRG7. Any one of these trigger lines
may be used as a trigger source.
• Software trigger — generated within the controlling program.
• Immediate trigger — places the trigger system in the wait-for-trigger
state and then immediately triggers the output.
• External Trigger — an input on the terminal module (see page 35).
Use this source to synchronize the outputs to an external event.
The SOURcen:VOLTage[:LEVel]:TRIGgered[:AMPLitude] and
SOURcen:CURRent[:LEVel]:TRIGgered[:AMPLitude] commands program a
channel output value when the trigger conditions are met.
The INITiate:IMMediate command places the trigger system in the
wait-for-trigger state. The trigger event depends upon the trigger source set.
The trigger system is common to all channels in the module. That is, a
single trigger event triggers the output on all channels that are waiting for
the trigger. The SOURce subsystem contains commands to put each
channel in the wait-for-trigger state.
/* Set the trigger source for software trigger
TRIGger:SOURce HOLD
*/
/* Set channels 1 and 2 for triggered output
SOURce1:VOLTage:TRIGgered 1.5000
SOURce2:VOLTage:TRIGgered -2.5000
*/
/* Close the output relays
OUTPut1 ON
*/
OUTPut2 ON
/* Put the trigger system in the wait-for-trigger state */
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INITiate
/* Send the trigger event
TRIGger:IMMediate
*/
/* Channels 1 and 2 output the programmed voltages */
Note that the channels must be set for triggered output (using the SOURce
subsystem) before the trigger system is changed to the wait-for-trigger state
(using the INITiate command). If you send the SOURcen commands after
the INITiate command, the following error is reported:
+3014 Illegal while initiated
Once the outputs have been triggered (using TRIGger:IMMediate in the
previous example) the trigger system is set back to the trigger idle state. New
triggered channel output values can be programmed and the trigger system put
in the wait-for-trigger state. The triggering process is illustrated below.
Note
Once an output is enabled and a voltage or current output, that value
remains on the output. Sending subsequent SOURn:VOLT:TRIG or
SOURn:CURR:TRIG commands will not change the output value until the
trigger event is received. The output may be disabled (output relay opened)
with the OUTPn OFF command.
The trigger source set using the TRIGger:SOURce command remains in
effect until it is changed or a reset occurs. Following a reset (*RST) the
trigger source is set to HOLD.
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Using *OPC?
As shown, the examples have made no attempt to coordinate the program
execution with the HP E1418A module. In some cases, you may need to pause
program execution until the module has completed executing the commands.
The IEEE-488 common command *OPC? can be used to keep the program
and the module synchronized. The *OPC? query returns a 1 when all
programmed operations are complete. The program can wait for the
response before executing additional statements. The returned value is
unimportant (always a 1).
/* Set channel 1 voltage mode */
SOURce1:FUNCtion:MODE VOLTage
/* Set channel 1 voltage output */
SOURce1:VOLTage 5.000
/* Turn on the output */
OUTPut1 ON
*OPC?
/* enter the response
*/
*OPC? is used to synchronize the program with the module since program
execution waits for the response. The command may be combined using the ;
as described under “Linking Commands” on page 62. For example,
/* Set channel 1 voltage mode */
SOURce1:FUNCtion:MODE VOLTage;*OPC?
/* enter the response
*/
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Combining Output Channels
As described on page 34, multiple outputs may be combined to obtain higher
voltage or current outputs. A triggered output is recommended for combined
channels. The general sequence used to control combined channels is:
1. Set the trigger source.
2. Close the output relays.
3. Set the desired output on all combined channels.
4. Trigger the output.
For example, when three current channels are combined in parallel as
shown on page 34, the following commands can be used.
/* Set the trigger source for external trigger
*/
TRIGger:SOURce EXT
/* Close the output relays
OUTPut9 ON
*/
OUTPut10 ON
OUTPut11 ON
/* Set channels 9, 10, and 11 for triggered output
SOURce9:CURRent:TRIGgered MAX
SOURce10:CURRent:TRIGgered MAX
SOURce11:CURRent:TRIGgered .0100
*/
/* Put the trigger system in the wait-for-trigger state */
INITiate
/* Wait for the trigger event
*/
*/
/* When the trigger occurs…
/* … output 50 mA
*/
When combining channels in parallel, for increased current output, channels
may be configured with either isolated or non-isolated plug-on modules.
When combining channels in series, for increased voltage output, all
combined channels MUST be configured with isolated plug-on modules.
CAUTION
When combining output voltage channels (series connections) you must
ensure that the output does not exceed the maximum isolation rating of ±42
Vdc/42 Vpeak. Up to three channels may be combined, but the controlling
program must ensure that all three channels together are NEVER set
beyond ±42 Vdc.
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Notes
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Chapter 3
HP E1418A SCPI Command Reference
Using This Chapter
This chapter describes Standard Commands for Programmable Instrumentation
(SCPI) and summarizes IEEE 488.2 Common (*) Commands applicable to the
HP E1418A D/A Converter Module. This chapter contains the following sections:
• Command Types . . . . . . . . . . . . . . . . . . . . . . . . . Page 59
• SCPI Command Reference . . . . . . . . . . . . . . . . . . . . Page 62
• ABORt Subsystem . . . . . . . . . . . . . . . . . . . . . . . . Page 63
• APPLy Subsystem . . . . . . . . . . . . . . . . . . . . . . . . Page 64
• CALibration Subsystem . . . . . . . . . . . . . . . . . . . . . . Page 66
• DIAGnostic Subsystem . . . . . . . . . . . . . . . . . . . . . . Page 76
• INITiate Subsystem . . . . . . . . . . . . . . . . . . . . . . . . Page 80
• OUTPut Subsystem . . . . . . . . . . . . . . . . . . . . . . . . Page 81
• SOURce Subsystem . . . . . . . . . . . . . . . . . . . . . . . . Page 84
• STATus Subsystem . . . . . . . . . . . . . . . . . . . . . . . . Page 95
• SYSTem Subsystem . . . . . . . . . . . . . . . . . . . . . . . Page 100
• TEST Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . Page 101
• TRIGger Subsystem . . . . . . . . . . . . . . . . . . . . . . . . Page 104
• IEEE 488.2 Common Command Quick Reference . . . . . . . . Page 106
• HP E1418A Command Quick Reference . . . . . . . . . . . . . Page 107
Command Types
Commands are separated into two types: IEEE 488.2 Common Commands and
SCPI Commands.
Common The IEEE 488.2 standard defines the common commands that perform functions
like reset, self-test, status byte query, etc. Common commands are four or five
characters in length, always begin with the asterisk character (*), and may include
one or more parameters. The command keyword is separated from the first
Command
Format
parameter by a space character. Common commands are not documented, except in
a general manner, in this manual. Some examples of common commands are:
*RST
*ESR 32
*STB?
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SCPI Command Format
SCPI commands perform functions like setting outputs, querying instrument states,
or retrieving data. The command structure is a hierarchical structure that usually
consists of a top level (or root) command, one or more lower level commands, and
their parameters. The following example shows part of a typical subsystem:
SOURcen:
FUNCtion:
MODE <CURRent | VOLTage>
SOURcen: is the root command (where n is replaced by the channel number in the
range of 1 to 16), FUNCtion: is a second level command, MODE is a third level
command, and <CURRent | VOLTage> is an input parameter.
Command A colon (:) always separates one command from the next lower level command.
This is illustrated as follows:
Separator
SOURcen:FUNCtion:MODE VOLT
Colons separate the root command from the second level (SOURcen:FUNCtion) and
the second from third level (FUNCtion:MODE), and so forth.
Abbreviated and The command syntax shows most commands as a mix of upper and lower case
letters. The upper case letters indicate an abbreviated spelling for the command.
For shorter program lines, send only the abbreviated form. For better program
readability use the entire command. The instrument will accept either the
abbreviated form or the entire command.
Short Commands
For example, if the command reference syntax shows the command TRIGger, then
TRIG and TRIGGER are both acceptable forms. Other forms of TRIGger, such as
TRIGG or TRIGGE will generate an error.
The instrument does not distinguish between upper case and lower case characters.
Therefore TRIGGER, trigger, and TrigGeR are all acceptable.
Command keywords can be entered in their full form, as shown above, or can be
entered in their short form. In this manual, the entry required in short form
commands is always capitalized. The short form is generally used for examples in
this manual.
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Implied Implied commands appear in square brackets ([ ]) in the command syntax. (Note
that the brackets are not part of the command and are not sent to the instrument.)
Suppose you send a second level command but do not send the preceding implied
command. In this case, the instrument assumes you intend to use the implied
command and it responds as if you had sent it. Examine this excerpt from the
STATus subsystem shown below:
Commands
STATus:
OPERation
[:EVENt]?
The third level command, EVENt, is implied. To read the value of the Event
Register, you can use either:
STATus:OPERation?
or
STATus:OPERation:EVENt?
Parameters
Parameters are enclosed in greater than/less than symbols (< >) in the command
syntax. When more than one parameter is allowed, the parameters are separated by
a vertical line ( | ).
Parameter Types. The following table contains explanations and examples of
parameter types you might see later in this chapter. Parameters must always be
separated from the keywords by a space.
Parameter Type
Explanations and Examples
Numeric
Accepts all commonly used decimal representations of
numbers including optional signs, decimal points, and
scientific notation.
123, 123E2, -123, -1.23E2, .123, 1.23E-2, 1.23000E-01.
Special cases include MIN, MAX, and DEF.
Boolean
Discrete
Represents a single binary condition that is either
true or false.
ON, OFF, 1, 0.
Selects from a finite number of values. These parameters
use mnemonics to represent each valid setting.
An example is the SOURcen:FUNCtion:MODE <mode>
command where the <mode> parameter can be either
CURRent or VOLTage.
Optional Parameters. Parameters shown within square brackets ([ ]) are optional
parameters. (Note that the brackets are not part of the command and are not sent to
the instrument.) If you do not specify a value for an optional parameter, the
instrument chooses a default value.
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Linking Linking IEEE 488.2 Common Commands with SCPI Commands. Use a
semicolon between the commands. For example:
Commands
*RST;APPLy2:VOLT 10 or INIT:IMM;*IDN?
Linking Multiple SCPI Commands. Use both a semicolon and a colon between
the commands. For example:
SOURce2:FUNCtion:MODE VOLT;:SOURce2:VOLTage 10
SCPI Command Reference
The following sections describe the Standard Commands for Programmable
Instruments (SCPI) commands for the HP E1418A D/A Converter Module.
Commands are listed alphabetically by subsystem and within each subsystem. A
command guide is printed in the top margin of each page. The guide indicates the
current subsystem on that page.
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ABORt
ABORt
The ABORt subsystem disables the trigger system and places the trigger system in
the trigger idle state.
Subsystem Syntax
Parameters None.
ABORt
Comments • Following this command, the trigger system is in the idle state. Sending an
INITiate command after ABORt returns the trigger system to the wait-for-trigger
state.
• Triggering is described in more detail on page 54.
• Related Commands: INITiate[:IMMediate]
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APPLy
APPLy
The APPLy subsystem enables and outputs a current or voltage on the specified channel.
Subsystem Syntax
APPLyn
:CURRent <value | MIN | MAX | DEF>
:VOLTage <value | MIN | MAX | DEF>
APPLyn:CURRent
APPLyn:CURRent <value | MIN | MAX | DEF> outputs a current on the specified
channel, n.
Parameters
Parameter
Name
Parameter
Type
Range of
Values
Default
keyword
1 to 8 or 1 to 16
1
0
APPLyn
<value>
numeric (float 32) or
discrete
-0.02 Amps to +0.02 Amps or
MIN | MAX | DEF
Comments • In the keyword, APPLyn, the valid range of n is:
1 to 8 for E1418A, E1418A Option 002
1 to 16 for E1418A Option 001, E1418A Option 003.
Values of n outside these ranges will generate an error.
• The <value> parameter can range from -0.02 to +0.02 Amps.
MIN sets -0.02 Amps output.
MAX sets +0.02 Amps output.
DEF sets 0 Amps output.
• This command is affected by the state of the P/J jumper for this channel on the
terminal module. To use the APPLyn:CURRent command:
– the P/J jumper must be set to program selectable or, if set to jumper selectable,
– the V/I jumper must be set to the current mode.
These jumpers are described on page 31.
• Equivalent Commands: SOURcen:FUNCtion:MODE CURR,
SOURcen:CURRent[:LEVel][:IMMediate][:AMPLitude], OUTPutn[:STATe] ON
• *RST Condition:
– If the P/J jumper is set to program selectable:
output mode is set to voltage, 0 volts output, output relay open.
– If the P/J jumper is set to jumper selectable:
output mode is set by the V/I jumper, 0 volts or amps, output relay open.
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APPLy
APPLyn:VOLTage
APPLyn:VOLTage <value | MIN | MAX | DEF> outputs a voltage on the specified
channel, n.
Parameters
Parameter
Name
Parameter
Type
Range of
Values
Default
APPLyn
<value>
keyword
1 to 8 or 1 to 16
1
0
numeric (float 32) or
discrete
-16 V to +16 V or MIN | MAX | DEF
Comments • In the keyword, APPLyn, the valid range of n is:
1 to 8 for E1418A, E1418A Option 002
1 to 16 for E1418A Option 001, E1418A Option 003.
Values of n outside these ranges will generate an error.
• The <value> parameter can range from -16 Volts to +16 Volts.
MIN sets -16 Volts output.
MAX sets +16 Volts output.
DEF sets 0 Volts output.
• This command is affected by the state of the program jumper on the terminal
module for this channel. To use the APPLyn:VOLT command:
– the P/J jumper must be set to program selectable or, if set to jumper selectable,
– the V/I jumper must be set to the voltage mode.
This jumper is described on page 31.
• Equivalent Commands: SOURcen:FUNCtion:MODE VOLT,
SOURcen:VOLTage[:LEVel][:IMMediate][:AMPLitude], OUTPutn[:STATe] ON
• *RST Condition:
– If the P/J jumper is set to program selectable:
output mode is set to voltage, 0 volts output, output relay open.
– If the P/J jumper is set to jumper selectable:
output mode is set by the V/I jumper, 0 volts or amps, output relay open.
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CALibration
CALibration
The CALibration commands are used during periodic calibration of the module.
Calibration is described in Appendix D of this manual, beginning on page 154. You
should review Appendix D before using any of these commands.
Subsystem Syntax
CALibration
:CONDition?
:CONFigure
:RESistance?
:RESet
:STORe
:TEST?
:VALue
:RESistance <value>
CALibrationn
:CONFigure
:CURRent?
:VOLTage?
:VALue
:CURRent? <value>
:VOLTage? <value>
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CALibration
CALibration:CONDition?
CALibration:CONDition? queries the module type and calibration status. The
query returns four 16-bit unsigned integers.
Parameters Returns: four unsigned 16-bit integers (uint16).
Comments • The integers returned indicate the module configuration and status at the last
calibration, not the current configuration of the module. The first and second
integers returned from this query can be compared to the first and third integers
returned from the DIAGnostic:CONFigure? query to determine if the module
configuration has changed since the last calibration.
Integer
Returned
Meaning
1
Expansion Board ID in the form:
0 = present, 7 = none
(expansion board contains channels 9–16)
2
3
4
2nd 16-bit value indicates how the channels are configured (isolated
or non-isolated). A bit set to 0 indicates an isolated channel, a bit set
to 1 indicates a non-isolated channel. Bits 0–15 correspond to
channels 1–16, respectively.
3rd 16-bit value indicates the current calibration status for each
channel. A bit set to 0 indicates the channel is not calibrated for
current, a bit set to 1 indicates the channel has been calibrated for
current. Bits 0–15 correspond to channels 1–16, respectively.
4th 16-bit value indicates the voltage calibration status for each
channel. A bit set to 0 indicates the channel is not calibrated for
voltage, a bit set to 1 indicates the channel has been calibrated for
voltage. Bits 0–15 correspond to channels 1–16, respectively.
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CALibration
CALibration:CONFigure:RESistance?
CALibration:CONFigure:RESistance? configures the module to perform
calibration of the internal calibration resistor and returns a 0or 1indicating the
readiness of the module.
Parameters Returns: signed 16-bit integer (int16). 1= ready, 0= not ready.
Comments • The internal calibration resistor should be calibrated before calibrating the
channels in current mode.
• This query configures the module for a 4-wire resistance measurement at the CAL
output terminals when the calibration point is set to CALB (following a *RST or
DIAGnostic:CALibration:OUTPut[:MODE] CALBus command).
• This query may also be used to set an external calibration resistor value when
calibrating at each channel output.
• This query is used together with the CALibration:VALue:RESistance command to
calibrate the current calibration resistor.
• Refer to Appendix D, “Voltage/Current Output Adjustment”, starting on page 154,
for additional information about this command.
• Related Commands: CALibration:VALue:RESistance
CALibration:RESet
CALibration:RESet reloads, for module use, the calibration constants stored in
non-volatile memory.
Parameters • None.
Comments • This command, with respect to the calibration constants, performs the same action
as power-on.
• At power-on, or following this command, calibration constants stored in
non-volatile memory are loaded into the module where they are used during
output operations.
• If the trigger system is waiting for a trigger when this command is received,
an error is generated.
• This command opens all output relays.
• Related Commands: CALibration:STORe
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CALibration
CALibration:STORe
CALibration:STORe loads the stored non-volatile memory calibration constants
with the calibration constants currently in use by the module.
Parameters None.
Comments • This command sets the calibration constants in non-volatile memory if the CAL
Store Enable Jumper is properly set (see page 156). Non-volatile memory has
finite life, based upon the number of writes. Use this command sparingly.
• At power-on, calibration constants stored in non-volatile memory are loaded into
the module where they are used during output operations.
• When this command is received, the checksum is verified using the constants
currently in use by the module. If the checksum does not verify, the non-volatile
memory is not updated and an error is generated.
• Refer to Appendix D, “Voltage/Current Output Adjustment”, starting on page 154,
for additional information about this command.
• Related Commands: CALibration:RESet
CALibration:TEST?
CALibration:TEST? performs an internal rough check of the calibration of each
channel and returns an integer indicating the channel calibration condition.
Calibration is checked to approximately ± 2%.
Parameters Returns: unsigned 16-bit integer (uint16).
Comments • Following the completion of this query all outputs are disabled and set to 0 Volts
or 0 Amps based on the channel mode.
• This query returns a 16-bit integer indicating the calibration status of each channel.
– Bits set to 0 indicate no calibration errors were found.
– Bits set to 1 indicate a channel with questionable calibration.
– Bits 0–15 correspond to channels 1–16, respectively.
• If the trigger system is waiting for a trigger when this command is received, an
error is generated.
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CALibration
CALibration:VALue:RESistance
CALibration:VALue:RESistance <value> enters a new measured value to be used
as the internal calibration resistor constant by the module.
Parameters
Parameter
Name
Parameter
Type
Range of
Values
Default
<value>
numeric (float 32)
Must be > 0 ohms
none
Comments • The new calibration constant is used by the module but not stored in non-volatile
memory.
• This command is used together with the CALibration:CONFigure:RESistance?
query to calibrate the internal current calibration resistor.
• The internal calibration resistor should be calibrated before calibrating channels in
current mode. When calibrating at the CAL connections and using the internal
calibration resistor, the value need only be entered once to calibrate all channels.
• If using an external resistor to calibrate current mode, you must calibrate at each
channel output. External resistances in the range of 50 Ω to 500 Ω are recommended.
• Refer to Appendix D, “Voltage/Current Output Adjustment”, starting on page 154,
for additional information about this command.
• Related Commands: CALibration:STORe, CALibration:CONFigure:RESistance?
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CALibration
CALibrationn:CONFigure:CURRent?
CALibrationn:CONFigure:CURRent? configures the channel for current mode
calibration and returns a 0or 1to indicate the channel’s readiness for calibration.
Parameters
Parameter
Name
Parameter
Type
Range of
Values
Default
keyword
1 to 8 or 1 to 16
1
CALibrationn
Returns: an unsigned 16-bit integer (uint16). 1= ready, 0= not ready.
Comments • In the keyword, CALibrationn, the valid range of n is:
1 to 8 for E1418A, E1418A Option 002
1 to 16 for E1418A Option 001, E1418A Option 003.
Values of n outside these ranges will generate an error.
• This command is used together with the CALibrationn:VALue:CURRent? <value>
query to perform current mode calibration.
• The calibration is performed either at the CAL output terminals or at an individual
channel. The choice is made using the DIAGnostic:CALibration:OUTPut[:MODE]
command.
– When the DIAG:CAL:OUTP:MODE CALBus command (also the reset state)
is used, the output relay routes the calibration current to the CAL output
terminals (and opens all channel output terminals).
– When the DIAG:CAL:OUTP:MODE CHANnel command is used, the output relay
routes the calibration current to the channel terminals (the CAL terminals are
not connected).
The DIAG:CAL:OUTP:MODE command must be sent to the module before the
CALibrationn:CONFigure:CURRent? query.
• This query will generate an error if the trigger system is waiting for a trigger event
when this command is received.
• This query returns a 0to indicate that the channel is not ready for calibration, and
a 1to indicate the channel is ready for calibration.
• This query is affected by the state of the program jumper for this channel on the
terminal module. To use this command:
– the P/J jumper must be set to program selectable or, if set to jumper selectable,
– the V/I jumper must be set to the current mode. The jumpers are described on
page 31.
• Refer to Appendix D, “Voltage/Current Output Adjustment”, starting on page 154,
for additional information about this command.
• Related Commands: CALibrationn:VALue:CURRent?,
DIAGnostic:CALibration:OUTPut[:MODE]
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CALibration
CALibrationn:CONFigure:VOLTage?
CALibrationn:CONFigure:VOLTage? configures the channel for voltage mode
calibration and returns a 0or 1to indicate the channel’s readiness for calibration.
Parameters
Parameter
Name
Parameter
Type
Range of
Values
Default
CALibrationn
keyword
1 to 8 or 1 to 16
1
Returns: an unsigned 16-bit integer (uint16). 1= ready, 0= not ready.
Comments • In the keyword, CALibrationn, the valid range of n is:
1 to 8 for E1418A, E1418A Option 002
1 to 16 for E1418A Option 001, E1418A Option 003.
Values of n outside these ranges will generate an error.
• This command is used together with the CALibrationn:VALue:VOLTage? query to
perform voltage mode calibration.
• The calibration is performed either at the CAL output terminals or at an individual
channel. The choice is made using the DIAGnostic:CALibration:OUTPut[:MODE]
command.
– When the DIAG:CAL:OUTP:MODE CALBus command (also the reset state)
is used, the output relay routes the calibration voltage to the CAL output
terminals (and opens all channel output terminals).
– When the command DIAG:CAL:OUTP:MODE CHANnel is used, the output
relay routes the calibration voltage to the channel terminals (the CAL terminals
are not connected).
The DIAGnostic:CALibration:OUTPut[:MODE] command must be sent to the
module before the CALibrationn:CONFigure:VOLTage? query.
• This query will generate an error if the trigger system is waiting for a trigger event
when this command is received.
• This query returns a 0to indicate that the channel is not ready for calibration,
and a 1to indicate the channel is ready for calibration.
• This command is affected by the state of the program jumper for this channel on
the terminal module. To use this command:
– the P/J jumper must be set to program selectable or, if set to jumper selectable,
– the V/I jumper must be set to the voltage mode.
The jumpers are described on page 31.
• Refer to Appendix D, “Voltage/Current Output Adjustment”, starting on page 154,
for additional information about this command.
• Related Commands: CALibrationn:VALue:VOLTage?,
DIAGnostic:CALibration:OUTPut[:MODE]
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CALibration
CALibrationn:VALue:CURRent?
CALibrationn:VALue:CURRent? <value> enters a measured calibration value
and returns a value indicating the present state of the current calibration process.
Parameters
Parameter
Name
Parameter
Type
Range of
Values
Default
CALibrationn
<value>
keyword
1 to 8 or 1 to 16
0.0 to 6.0 V
1
numeric (float 32)
none
Returns: unsigned 16-bit integer (uint16).
Comments • In the keyword, CALibrationn, the valid range of n is:
1 to 8 for E1418A, E1418A Option 002
1 to 16 for E1418A Option 001, E1418A Option 003.
Values of n outside these ranges will generate an error.
• This command is used together with the CALibrationn:CONFigure:CURRent?
query to perform voltage mode calibration. Following the CALn:CONF:CURR?
query, this command is used repetitively until the return value indicates that the
calibration is complete.
• The <value> parameter is the measured output voltage. A minimum of
9 measurements must be taken to calibrate a channel for current mode output
(a maximum of 50 measurements may be required).
• This query returns one of the following values:
Return
Value
Meaning
0
Calibration is complete.
New constants are in RAM.
Resistance is calibrated.
1
2
More measurements are needed.
Resistance is calibrated.
Calibration is complete.
New constants are in RAM.
Resistance is not calibrated.
3
5
More Measurements are needed.
Resistance is not calibrated.
Calibration aborted.
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CALibration
• A returned value of 5 (calibration aborted) is given if either:
a. The command is received when the module is in voltage calibration or
resistance calibration mode, or
b. The calibration in process has entered more than 50 values without a
successful calibration.
• If the internal calibration resistor is not calibrated, the channel is not marked as
calibrated following the completion of calibration (see the CALibration:CONDition?
query). The new calibration constants are used, however.
• When the channel current calibration is completed, the new calibration constants
are used by the module, but not stored in non-volatile memory.
• If a calibration is interrupted before completion (that is, by another command
being received), no constants will be changed.
• Refer to Appendix D, “Voltage/Current Output Adjustment”, starting on page 154,
for additional information about this command.
• Related Commands: CALibration:STORe, CALibrationn:CONFigure:CURRent?
CALibrationn:VALue:VOLTage?
CALibrationn:VALue:VOLTage? <value> enters a measured calibration value and
returns a value indicating the present state of the voltage calibration process.
Parameters
Parameter
Name
Parameter
Type
Range of
Values
Default
keyword
1 to 8 or 1 to 16
0 to 19.2 V
1
CALibrationn
<value>
numeric (float 32)
none
Returns: unsigned 16-bit integer (uint16).
Comments • In the keyword, CALibrationn, the valid range of n is:
1 to 8 for E1418A, E1418A Option 002
1 to 16 for E1418A Option 001, E1418A Option 003.
Values of n outside these ranges will generate an error.
• This command is used together with the CALibrationn:CONFigure:VOLTage? query
to perform voltage mode calibration. Following the CALn:CONF:VOLT? query, this
command is used repetitively until the return value indicates that the calibration is
complete.
• The <value> parameter is the measured output voltage. A minimum of
9 measurements must be taken to calibrate a voltage output channel
(a maximum of 50 measurements may be required).
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CALibration
• This query returns one of the following values:
Return
Value
Meaning
0
Calibration is complete.
New constants are in RAM.
1
5
More measurements are needed.
Calibration aborted.
• A return value of 5 (calibration aborted) is given if either:
a. The command is received when the module is in current calibration or
resistance calibration mode, or
b. The calibration in process has entered more than 50 values without a
successful calibration.
• When the channel voltage calibration is completed, the new calibration constants
are used by the module, but not stored in non-volatile memory.
• If a voltage calibration is interrupted before completion (that is, by another
command being received), no constants are changed.
• Refer to Appendix D, “Voltage/Current Output Adjustment”, starting on page 154,
for additional information about this command.
• Related Commands: CALibration:STORe, CALibrationn:CONFigure:VOLTage?
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DIAGnostic
DIAGnostic
The DIAGnostic subsystem contains commands used to check the module
configuration, enable or disable all outputs simultaneously, change a channel’s
mode without opening and closing the output relay, and check the state of the trigger
on all channels.
Subsystem Syntax
DIAGnostic
:CALibration
:OUTPut
[:MODE] <path>
[:MODE]?
:CONFigure?
:OUTPut
:ALL
[:STATe] <state>
:SOURcen
:FUNCtion
:MODE <mode>
:TRIGgered?
DIAGnostic:CALibration:OUTPut[:MODE]
DIAGnostic:CALibration:OUTPut[:MODE] <path> sets the voltage calibration
path for the module to either the CAL output terminals or at each output channel.
Parameters
Parameter
Name
Parameter
Type
Range of
Values
Default
<path>
discrete
CALBus or CHANnel
none
Comments • The typical calibration mode for the module is through the CAL output terminals.
Following *RST or power-on, the default calibration mode is through the CAL
output terminals (and this command is not needed).
• This command with the CHANnel parameter, sets calibration to be performed at
each channel’s output terminals (and so includes the channel output relay
contacts).
• This command must be sent before any CALibrationn:CONFigure:VOLTage? or
CALibrationn:CONFigure:CURRent? query.
• *RST State: Calibration paths set to use the CAL output terminals.
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DIAGnostic
DIAGnostic:CALibration:OUTPut[:MODE]?
DIAGnostic:CALibration:OUTPut[:MODE]? queries the voltage calibration path
for the module.
Parameters Returns: string.
Comments • The returned string will be one of CALBor CHAN.
DIAGnostic:CONFigure?
DIAGnostic:CONFigure? returns six 16-bit words indicating the present settings of
the module.
Parameters Returns: six unsigned 16-bit integers (uint16).
Comments • This query returns six 16-bit words with the following meanings:
Integer
Returned
Meaning
1st
Expansion Board ID in the form: 0 = present, 7 = none
(expansion board contains channels 9–16).
2nd
3rd
Terminal Module ID in the form:
0 = screw type, 7 = none or other.
Isolated/Non-Isolated Channel Status
A bit set to 0 indicates an isolated channel.
A bit set to 1 indicates a non-isolated channel or no plug-on module
installed (DO NOT operate the module without a plug-on module).
Bits 0–15 correspond to channels 1–16, respectively*.
4th
5th
6th
Channel Mode
A bit set to 0 indicates a current output channel.
A bit set to 1 indicates a voltage output channel.
Bits 0–15 correspond to channels 1–16, respectively*.
Channel Output State
A bit set to 0 indicates the channel output relay is closed.
A bit set to 1 indicates the channel output relay is open.
Bits 0–15 correspond to channels 1–16, respectively*.
Channel Mode Programmable State (P/J Jumper)
A bit set to 0 indicates a channel is not programmable.
A bit set to 1 indicates a channel is programmable.
Bits 0–15 correspond to channels 1–16, respectively*.
* For 8 channel configurations, the upper 8 bits of integers 3, 4, 5, and 6 are set to 1’s.
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DIAGnostic
DIAGnostic:OUTPut:ALL[:STATe]
DIAGnostic:OUTPut:ALL[:STATe] <state> opens or closes all channel output
relays at once.
Parameters
Parameter
Name
Parameter
Type
Range of
Values
Default
<state>
boolean
OFF | ON | 0 | 1
0
Comments • This command performs the same function as the OUTPutn[:STATe] command,
but enables or disables all outputs simultaneously.
• Related Commands: OUTPutn[:STATe]
DIAGnostic:SOURcen:FUNCtion:MODE
DIAGnostic:SOURcen:FUNCtion:MODE <mode> changes the output mode of the
channel without disabling the channel output.
Parameters
Parameter
Name
Parameter
Type
Range of
Values
Default
SOURcen
<mode>
keyword
discrete
1 to 8 or 1 to 16
1
CURRent or VOLTage
none
Comments • In the keyword, SOURcen, the valid range of n is:
1 to 8 for E1418A, E1418A Option 002
1 to 16 for E1418A Option 001, E1418A Option 003.
Values of n outside these ranges will generate an error.
• Use this command with caution. The output voltage or current is not
predictable during the mode change and transients will occur.
• This command performs the same function as the SOURcen:FUNCtion:MODE
command, but does not disable the output during the mode change. This
command can reduce the settling time required to disable and enable the outputs.
• Following a mode change with this command, the appropriate calibration constants
are used, the channel mode is changed, and the output is set to either 0 V or 0 A.
• This command will generate an error if the trigger system is waiting for a trigger
event when this command is received.
• This command is affected by the state of the P/J jumper on the terminal module.
If the P/J jumper is not set to Program Selectable, this command will generate an
error. This jumper is described on page 31.
• Related Commands: SOURcen:FUNCtion:MODE
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DIAGnostic
DIAGnostic:TRIGgered?
DIAGnostic:TRIGgered? returns a 16-bit word indicating the current trigger status
of the module.
Parameters Returns: unsigned 16-bit integer (uint16).
Comments • This query returns a 16-bit word indicating the trigger status of each channel.
– A bit is set to 0 to indicate the channel is not waiting for a trigger.
– A bit is set to 1 to indicate the channel is in the wait-for-trigger state.
– Bits 0–15 correspond to channels 1–16, respectively.
• Related Commands: TRIGger:SOURce
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INITiate
INITiate
The INITiate subsystem changes the trigger state from idle to wait-for-trigger.
Subsystem Syntax
INITiate
[:IMMediate]
INITiate[:IMMediate]
Changes the trigger system from the idle state to the wait-for-trigger state.
Parameters None.
Comments • If this command is received and the trigger system is not idle, an error is
generated.
• If this command is received and no channels are waiting for a trigger event, an
error is generated.
• Triggering is described in more detail on page 54.
• Related Commands: TRIGger:SOURce, SOURcen:VOLTage:TRIGgered,
SOURcen:CURRent:TRIGgered, ABORt
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OUTPut
OUTPut
The OUTPut subsystem provides commands to open or close the output relay on
each channel and to enable the module to output the selected trigger source on one
of the VXIbus TTL trigger lines.
Subsystem Syntax
OUTPut
:TTLTrgn
[:STATe] <state>
[:STATe]?
OUTPutn
[:STATe] <state>
[:STATe]?
OUTPut:TTLTrgn[:STATe]
OUTPut:TTLTrgn[:STATe] <state> specifies which VXIbus TTLTRG line is
enabled to source a VXIbus trigger when the module is triggered.
Parameters
Parameter
Name
Parameter
Type
Range of
Values
Default
TTLTrgn
<state>
keyword
boolean
0 to 7
none
0
OFF | ON | 0 | 1
Comments • VXIbus TTLTRG lines are numbered from 0 to 7. Only one line can be enabled
at a time.
• If a different line is already enabled when this command is received, a settings
conflict error is reported.
• This command sources a trigger from the module. The TRIGger:SOURce TTLTn
command programs the module to accept triggers from the VXIbus TTLTRG
lines. The module can be programmed to both accept and source triggers on the
VXIbus TTLTRG lines but the source TTLTRG line and the accepted TTLTRG
line must be different.
• This command should be sent before the TRIGger:SOURce TTLTn command.
• *RST Condition: All lines disabled.
• Related Commands: TRIGger:SOURce TTLTn, OUTPut:TTLTn[:STATe]?
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OUTPut
OUTPut:TTLTrgn[:STATe]?
OUTPut:TTLTrgn[:STATe]? queries if the specified VXIbus TTLTRG line is set to
be a source of trigger from the module.
Parameters
Parameter
Name
Parameter
Type
Range of
Values
Default
TTLTrgn
keyword
0 to 7
none
Returns: unsigned 16-bit integer (uint16).
Comments • This query returns a 1if the specified VXIbus TTLTRG line is enabled as a
trigger source. This query returns a 0if the specified VXIbus TTLTRG line is
disabled as a trigger source.
• Related Commands: OUTPut:TTLTn[:STATe]
OUTPutn[:STATe]
OUTPutn[:STATe] <state> opens or closes the specified channel output relay.
Parameters
Parameter
Name
Parameter
Type
Range of
Values
Default
keyword
boolean
1 to 8 or 1 to 16
OFF | ON | 0 | 1
none
none
OUTPutn
<state>
Comments • In the keyword, OUTPutn, the valid range of n is:
1 to 8 for E1418A, E1418A Option 002
1 to 16 for E1418A Option 001, E1418A Option 003.
Values of n outside these ranges will generate an error.
• This command sets the output state of individual channel output relays. Use the
DIAGnostic:OUTPut:ALL[:STATe] command to set all channels with a single
command.
• *RST Condition: All output relays open.
• Related Commands: OUTPutn[:STATe]?, DIAGnostic:OUTPut:ALL[:STATe]
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OUTPut
OUTPutn[:STATe]?
OUTPutn[:STATe]? queries the state of the specified channel output relay and
returns a 0or 1.
Parameters
Parameter
Name
Parameter
Type
Range of
Values
Default
OUTPutn
keyword
1 to 8 or 1 to 16
none
Returns: unsigned 16-bit integer (uint16).
Comments • In the keyword, OUTPutn, the valid range of n is:
1 to 8 for E1418A, E1418A Option 002
1 to 16 for E1418A Option 001, E1418A Option 003.
Values of n outside these ranges will generate an error.
• The query returns a 0if the specified channel output relay is open. The query
returns a 1if the specified channel output relay is closed.
• Related Commands: OUTPutn[:STATe]
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SOURce
SOURce
The SOURce subsystem provides commands used to output a voltage or current at
each channel.
Subsystem Syntax
SOURcen
:CURRent
[:LEVel]
[:IMMediate]
[:AMPLitude] <value | MIN | MAX | DEF>
[:AMPLitude]?
:TRIGgered
[:AMPLitude] <value | MIN | MAX | DEF>
[:AMPLitude]?
:FUNCtion
:MODE <mode>
:MODE?
:VOLTage
[:LEVel]
[:IMMediate]
[:AMPLitude] <value | MIN | MAX | DEF>
[:AMPLitude]?
:TRIGgered
[:AMPLitude] <value | MIN | MAX | DEF>
[:AMPLitude]?
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SOURce
SOURcen:CURRent[:LEVel][:IMMediate][:AMPLitude]
SOURcen:CURRent[:LEVel][:IMMediate][:AMPLitude] <value | MIN | MAX | DEF>
immediately outputs the current set in value at channel n when the output relay is closed.
Parameters
Parameter
Name
Parameter
Type
Range of
Values
Default
SOURcen
<value>
keyword
1 to 8 or 1 to 16
1
0
numeric (float 32) or
discrete
-0.02 Amps to +0.02 Amps or
MIN | MAX | DEF
Comments • In the keyword, SOURcen, the valid range of n is:
1 to 8 for E1418A, E1418A Option 002
1 to 16 for E1418A Option 001, E1418A Option 003.
Values of n outside these ranges will generate an error.
• The <value> parameter is a floating point 32-bit number in the range of -0.02 A
to +0.02 A.
MIN sets -0.02 Amps.
MAX sets +0.02 Amps.
DEF sets 0 Amps.
• This command immediately programs the specified current on channel n. The
output state of the channel must be enabled for the current to appear at the output
terminals.
• If the channel is in the voltage mode when this command is received, an error is
generated.
• Related Commands: SOURcen:CURRent[:LEVel][:IMMediate][:AMPLitude]?,
SOURcen:FUNCtion:MODE CURRent, OUTPutn[:STATe]
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SOURce
SOURcen:CURRent[:LEVel][:IMMediate][:AMPLitude]?
SOURcen:CURRent[:LEVel][:IMMediate][:AMPLitude]? [<MIN | MAX | DEF>
queries the last output value written by
SOURcen:CURRent[:LEVel][:IMMediate][:AMPLitude].
Parameters
Parameter
Name
Parameter
Type
Range of
Values
Default
SOURcen
keyword
1 to 8 or 1 to 16
MIN | MAX | DEF
1
<MIN | MAX | DEF> discrete (optional)
none
Returns: 32-bit floating point number (float 32).
Comments • In the keyword, SOURcen, the valid range of n is:
1 to 8 for E1418A, E1418A Option 002
1 to 16 for E1418A Option 001, E1418A Option 003.
Values of n outside these ranges will generate an error.
• If no parameter is given, this query returns the source current set on channel n by
the last SOURcen:CURRent[:LEVel][:IMMediate][:AMPLitude] command. The
value returned is the value last programmed on that channel, not an actual
measurement of the hardware output value.
• If a parameter is given,
MIN returns -0.02 Amps.
MAX returns +0.02 Amps.
DEF returns 0 Amps.
• This command generates an error if channel n is in the voltage output mode.
• Related Commands: SOURcen:CURRent[:LEVel][:IMMediate][:AMPLitude],
SOURcen:FUNCtion:MODE CURRent
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SOURce
SOURcen:CURRent[:LEVel]:TRIGgered[:AMPLitude]
SOURcen:CURRent[:LEVel]:TRIGgered[:AMPLitude] <value | MIN | MAX | DEF>
outputs the current set in value at channel n when the trigger conditions are satisfied and
the output relay is closed. Use this command to synchronize multiple channel outputs.
Parameters
Parameter
Name
Parameter
Type
Range of
Values
Default
SOURcen
<value>
keyword
1 to 8 or 1 to 16
1
0
numeric (float 32) or
discrete
-0.02 Amps to +0.02 Amps or
MIN | MAX | DEF
Comments • In the keyword, SOURcen, the valid range of n is:
1 to 8 for E1418A, E1418A Option 002
1 to 16 for E1418A Option 001, E1418A Option 003.
Values of n outside these ranges will generate an error.
• The <value> parameter is a floating point 32-bit number in the range of -0.02 A
to +0.02 A.
MIN sets -0.02 Amps.
MAX sets +0.02 Amps.
DEF sets 0 Amps.
• This command sets channel n to output the current specified following a valid
trigger condition. Following this command, the trigger system must be enabled
using an INITiate command. See the TRIGger subsystem discussion on page 54
for additional information.
• If the module is in a wait-for-trigger state (INIT has been received) when this
command is received, an error is generated.
• The output state of the channel must be enabled and the trigger event satisfied for
the current to appear at the output terminals.
• If the channel is in the voltage mode when this command is received, an error is
generated.
• Related Commands: SOURcen:CURRent[:LEVel]:TRIGgered[:AMPLitude]?,
SOURcen:FUNCtion:MODE CURRent, OUTPutn[:STATe]
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SOURce
SOURcen:CURRent[:LEVel]:TRIGgered[:AMPLitude]?
SOURcen:CURRent[:LEVel]:TRIGgered][:AMPLitude]? [<MIN | MAX | DEF>
queries the last value written by either
SOURcen:CURRent[:LEVel]:TRIGgered[:AMPLitude] or
SOURcen:CURRent[:LEVel][:IMMediate][:AMPLitude].
Parameters
Parameter
Name
Parameter
Type
Range of
Values
Default
SOURcen
keyword
1 to 8 or 1 to 16
MIN | MAX | DEF
1
<MIN | MAX | DEF> discrete (optional)
none
Returns: 32-bit floating point number (float 32).
Comments • In the keyword, SOURcen, the valid range of n is:
1 to 8 for E1418A, E1418A Option 002
1 to 16 for E1418A Option 001, E1418A Option 003.
Values of n outside these ranges will generate an error.
• If no parameter is given, this query returns the last value set on channel n by the
last SOURcen:CURRent[:LEVel]:TRIGgered[:AMPLitude] or
SOURcen:CURRent[:LEVel][:IMMediate][:AMPLitude] command. The value
returned is the value last programmed on that channel, not an actual measurement
of the hardware output value.
• If a parameter is given,
MIN returns -0.02 Amps.
MAX returns +0.02 Amps.
DEF returns 0 Amps.
• This command generates an error if channel n is in the voltage output mode.
• Related Commands: SOURcen:CURRent[:LEVel]:TRIGgered[:AMPLitude],
SOURcen:FUNCtion:MODE CURRent
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SOURce
SOURcen:FUNCtion:MODE
SOURcen:FUNCtion:MODE <mode> configures channel n for either current or
voltage output.
Parameters
Parameter
Name
Parameter
Type
Range of
Values
Default
SOURcen
<mode>
keyword
discrete
1 to 8 or 1 to 16
1
CURRent or VOLTage
none
Comments • In the keyword, SOURcen, the valid range of n is:
1 to 8 for E1418A, E1418A Option 002
1 to 16 for E1418A Option 001, E1418A Option 003.
Values of n outside these ranges will generate an error.
• Following this command, the output is disabled and set to either 0 A or 0 V.
• If the module is in the wait-for-trigger state when this command is received, an
error is generated.
• This command is affected by the state of the P/J jumper for this channel on the
terminal module. If the P/J jumper is not set to program selectable this command
will return an error. This jumper is described on page 31.
• *RST Condition:
– If the P/J jumper is set to program selectable:
output mode is set to voltage, 0 volts output, output relay open.
– If the P/J jumper is set to jumper selectable:
output mode is set by the V/I jumper, 0 volts or amps, output relay open.
• Related Commands: SOURcen:FUNCtion:MODE?, SOURcen:CURRent…
commands, SOURcen:VOLTage… commands
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SOURce
SOURcen:FUNCtion:MODE?
SOURcen:FUNCtion:MODE? queries channel n for current or voltage output
mode. The query returns a string.
Parameters
Parameter
Name
Parameter
Type
Range of
Values
Default
SOURcen
keyword
1 to 8 or 1 to 16
1
Returns: string.
Comments • In the keyword, SOURcen, the valid range of n is:
1 to 8 for E1418A, E1418A Option 002
1 to 16 for E1418A Option 001, E1418A Option 003.
Values of n outside these ranges will generate an error.
• This query returns CURRor VOLT.
• Related Commands: SOURcen:FUNCtion:MODE
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SOURce
SOURcen:VOLTage[:LEVel][:IMMediate][:AMPLitude]
SOURcen:VOLTage[:LEVel][:IMMediate][:AMPLitude] <value | MIN | MAX | DEF>
immediately outputs the voltage set in value at channel n when the output relay is closed.
Parameters
Parameter
Name
Parameter
Type
Range of
Values
Default
SOURcen
<value>
keyword
1 to 8 or 1 to 16
1
0
numeric (float 32) or
discrete
-16 V to +16 V or
MIN | MAX | DEF
Comments • In the keyword, SOURcen, the valid range of n is:
1 to 8 for E1418A, E1418A Option 002
1 to 16 for E1418A Option 001, E1418A Option 003.
Values of n outside these ranges will generate an error.
• The <value> parameter is a floating point 32-bit number in the range of -16 Volts
to +16 Volts.
MIN sets -16 Volts.
MAX sets +16 Volts.
DEF sets 0 Volts.
• This command immediately programs the specified voltage on channel n. The
output relay for that channel must be closed for the voltage to appear at the output
terminals.
• This command generates an error if channel n is in the current output mode.
• Related Commands: SOURcen:FUNCtion:MODE VOLTage,
SOURcen:VOLTage[:LEVel][:IMMediate][:AMPLitude]?, OUTPutn[:STATe]
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SOURce
SOURcen:VOLTage[:LEVel][:IMMediate][:AMPLitude]?
SOURcen:VOLTage[:LEVel][:IMMediate][:AMPLitude]? [<MIN | MAX | DEF>
queries the last output value written by
SOURcen:VOLTage[:LEVel][:IMMediate][:AMPLitude].
Parameters
Parameter
Name
Parameter
Type
Range of
Values
Default
SOURcen
keyword
1 to 8 or 1 to 16
MIN | MAX | DEF
1
<MIN | MAX | DEF> discrete (optional)
none
Returns: 32-bit floating point number (float 32).
Comments • In the keyword, SOURcen, the valid range of n is:
1 to 8 for E1418A, E1418A Option 002
1 to 16 for E1418A Option 001, E1418A Option 003.
Values of n outside these ranges will generate an error.
• If no parameter is given, this query returns the last value set on channel n with the
last SOURcen:VOLTage[:LEVel][:IMMediate][:AMPLitude] command. The value
returned is the value last programmed on that channel, not an actual measurement
of the hardware output value.
• If a parameter is given,
MIN returns -16.000.
MAX returns +16.000.
DEF returns 0.0000.
• This command generates an error if channel n is in the current output mode.
• Related Commands: SOURcen:VOLTage[:LEVel][:IMMediate][:AMPLitude],
SOURcen:FUNCtion:MODE VOLTage
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SOURce
SOURcen:VOLTage[:LEVel]:TRIGgered[:AMPLitude]
SOURcen:VOLTage[:LEVel]:TRIGgered[:AMPLitude] <value | MIN | MAX | DEF>
outputs the voltage set in value at channel n when the trigger conditions are satisfied
and the channel output relay is closed. Use this command to synchronize multiple
channel outputs.
Parameters
Parameter
Name
Parameter
Type
Range of
Values
Default
SOURcen
<value>
keyword
1 to 8 or 1 to 16
1
0
numeric (float 32) or
discrete
-16 V to +16 V or
MIN | MAX | DEF
Comments • In the keyword, SOURcen, the valid range of n is:
1 to 8 for E1418A, E1418A Option 002
1 to 16 for E1418A Option 001, E1418A Option 003.
Values of n outside these ranges will generate an error.
• The <value> parameter is a floating point 32-bit number in the range of -16 Volts
to +16 Volts.
MIN sets -16 Volts.
MAX sets +16 Volts.
DEF sets 0 Volts.
• This command sets channel n to output the voltage specified following a valid
trigger condition. Following this command, the trigger system must be enabled
using an INITiate command. See the TRIGger subsystem discussion, page 54, for
additional information.
• The channel output relay must be closed for the voltage to appear at the output
terminals.
• If the module is in a wait-for-trigger state (INIT has been received) when this
command is received, an error is generated.
• If the channel is in the current mode when this command is received, an error is
generated.
• Related Commands: SOURcen:VOLTage[:LEVel]:TRIGgered[:AMPLitude]?,
SOURcen:FUNCtion:MODE VOLTage
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SOURce
SOURcen:VOLTage[:LEVel]:TRIGgered[:AMPLitude]?
SOURcen:VOLTage[:LEVel]:TRIGgered][:AMPLitude]? [<MIN | MAX | DEF>
queries the latest value written by either
SOURcen:VOLTage[:LEVel]:TRIGgered[:AMPLitude] or
SOURcen:VOLTage[:LEVel][:IMMediate][:AMPLitude].
Parameters
Parameter
Name
Parameter
Type
Range of
Values
Default
SOURcen
keyword
1 to 8 or 1 to 16
MIN | MAX | DEF
1
<MIN | MAX | DEF> discrete (optional)
none
Returns: 32-bit floating point number (float 32).
Comments • In the keyword, SOURcen, the valid range of n is:
1 to 8 for E1418A, E1418A Option 002
1 to 16 for E1418A Option 001, E1418A Option 003.
Values of n outside these ranges will generate an error.
• If no parameter is given, this query returns the last value set on channel n by the
SOURcen:VOLTage[:LEVel][:IMMediate][:AMPLitude] or
SOURcen:VOLTage[:LEVel]:TRIGgered[:AMPLitude] command. The value
returned is the value last programmed on that channel, not an actual measurement
of the hardware output value.
• If a parameter is given,
MIN returns -16.000.
MAX returns +16.000.
DEF returns 0.000.
• This command generates an error if channel n is in the current output mode.
• Related Commands: SOURcen:VOLTage[:LEVel]:TRIGgered[:AMPLitude],
SOURcen:FUNCtion:MODE VOLTage
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STATus
STATus
The STATus subsystem controls the SCPI-defined Operation and Questionable
Status Registers and the Standard Event Register. Each is comprised of a Condition
Register, an Event Register, and an Enable mask. The SCPI Status System is shown
in the figure below.
Subsystem Syntax
STATus
:OPERation
:CONDition?
:ENABle <mask>
:ENABle?
[:EVENt]?
:PRESet
:QUEStionable
:CONDition?
:ENABle <mask>
:ENABle?
[:EVENt]?
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STATus
STATus:OPERation:CONDition?
STATus:OPERation:CONDition? returns the contents of the Operation Status
Condition Register. Reading the register does not affect its contents.
Parameters Returns: 16-bit signed integer (int16).
Comments • Bit 0 of this register (decimal 1) is the Calibrating bit. This bit is set when:
– the CALibration:CONFigure:RESistance?, CALibrationn:CONFigure:VOLTage?,
or CALibrationn:CONFigure:CURRent? command has been received and,
– measurements with the corresponding CALibration:VALue:RESistance,
CALibrationn:VALue:VOLTage?, or CALibrationn:VALue:CURRent? commands
are not complete.
• *RST Condition: clears all conditions.
• *CLS and STATus:PRESet do not affect bits in the Status Operation Condition
Register.
STATus:OPERation:ENABle
STATus:OPERation:ENABle <mask> specifies which bits of the Operational
Status Event Register are OR’d together to create the Operational Status bit (bit 7)
in the Summary Register of the Status Byte.
Parameters
Parameter
Name
Parameter
Type
Range of
Values
Default
<mask>
numeric (int16) or -32768 to +32767 or #H0000 to #HFFFF
non-decimal numeric
none
Comments • Only bit 0 (decimal 0) is used or defined in the Operation Register. Bit 0 is
defined as the Calibrating bit. A 1 in this bit indicates the module is currently in
the calibration mode.
• The non-decimal numeric forms are the #H, #Q, or #B formats specified by
IEEE-488.2.
• *RST clears all conditions.
• *CLS and STATus:PRESet do not affect bits in the Operation Status Condition
Register.
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STATus
STATus:OPERation:ENABle?
STATus:OPERation:ENABle? returns the value of the mask set for the Operation
Status Register.
Parameters Returns: 16-bit signed integer (int16).
STATus:OPERation[:EVENt]?
STATus:OPERation[:EVENt]? returns the value of the contents of the Operation
Status Event Register. Reading the register clears all bits in the register.
Parameters Returns: 16-bit signed integer (int16).
Comments • Bit 0 of this register (decimal 1) is the only defined bit in this register.
• This bit is set if the CALibration:CONFigure:RESistance?,
CALibrationn:CONFigure:VOLTage?, or CALibrationn:CONFigure:CURRent?
command has been received and the calibration process is not yet complete.
• *RST Condition: no effect.
• *CLS clears the contents of the Operation Status Register.
• STATus:PRESet does not affect the contents of the Operation Status Register, but
does disable reporting the Summary bit to the Status Byte Register.
STATus:PRESet
STATus:PRESet presets all Enable Registers to 0 (zero). The command has no
effect on Condition or Event Registers.
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STATus
STATus:QUEStionable:CONDition?
STATus:QUEStionable:CONDition? returns the value of the Questionable Status
Condition Register. Reading the register does not affect its contents. Since only
two bits are used in the HP E1418A and both those bits are defined to be events, this
command always returns 0and is included for compatibility purposes.
Parameters Returns: 16-bit signed integer (int16).
Comments • Bit 8 of this register (decimal 256) indicates the calibration condition. Bit 9 of
this register (decimal 512) indicates the trigger-ignored event.
• *RST Condition: clears all conditions.
• *CLS and STATus:PRESet do not affect bits in the Questionable Status Condition
Register.
STATus:QUEStionable:ENABle
STATus:QUEStionable:ENABle <mask> specifies which bits of the Questionable
Event Register are OR’d together to create the Questionable Data bit (bit 3) in the
Status Byte Summary Register.
Parameters
Parameter
Name
Parameter
Type
Range of
Values
Default
numeric (int16) or -32768 to +32767 or #H0000 to #HFFFF
non-decimal numeric
none
<mask>
Comments • Only bits 8 and 9 of the Questionable Data Register are used or defined. Bit 8
indicates a questionable calibration and bit 9 indicates a trigger was ignored.
• Either bit 8 or bit 9 can be used to generate an SRQ interrupt. Use the *SRE <mask>
common command to set the enable mask for the Status Byte Register to include the
Questionable Data bit (bit 3) in the Request for Service bit (bit 6). The request for
Service bit (bit 6) is used to generate the SRQ interrupt.
• The non-decimal numeric forms are the #H, #Q, or #B formats specified by
IEEE-488.2.
• *RST clears all conditions.
• *CLS and STATus:PRESet do not affect bits in the Questionable Status Condition
Register.
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STATus
STATus:QUEStionable:ENABle?
STATus:QUEStionable:ENABle? returns the mask set for the Questionable Status
Enable Register.
Parameters Returns: 16-bit signed integer (int16).
STATus:QUEStionable[:EVENt]?
STATus:QUEStionable[:EVENt]? returns the value of the Questionable Status
Event Register. Reading the register clears all bits in the register.
Parameters Returns: 16-bit signed integer (int16).
Comments • Bit 8 of this register (decimal 256) is set when either:
– A channel is set to an output mode that has not been calibrated, or
– A channel fails the CALibration:TEST? query.
• Bit 9 of this register (decimal 512) is set when a trigger-ignored event occurs.
• *RST Condition: no effect.
• *CLS clears the contents of the Questionable Status Register.
• STATus:PRESet does not affect the contents of the Questionable Status Register,
but does disable reporting the Summary bit to the Status Byte Register.
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SYSTem
SYSTem
The SYSTem subsystem returns information about the module.
Subsystem Syntax
SYSTem
:ERRor?
:VERSion?
SYSTem:ERRor?
SYSTem:ERRor? returns an error number and message from the instrument’s error
queue.
Parameters Returns: 16-bit signed integer (int16) and a string.
Comments • Each query returns an error number and error string from the queue. When no
errors are in the error buffer, the query returns +0,"No error".
• *CLS clears the error queue.
• *RST has no effect on the error queue.
SYSTem:VERSion?
SYSTem:VERSion? returns the SCPI version the driver complies with (not the
driver version).
Parameters Returns: string or float32.
Comments • Returns a decimal value in the form: YYYY.R; where YYYYis the year, and Ris
the revision number within that year. Return value can be input as a string.
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TEST
TEST
The TEST subsystem provides commands used to run individual self-tests and to
query the results of previous self-tests. To run the complete set of self-tests, use the
*TST? common command.
Subsystem Syntax
TEST
:NUMBer? <number>
:TST
[:RESults]?
*TST?
TEST:NUMBer?
TEST:NUMBer? <number> performs a single internal self-test on the module and
returns a 16-bit integer indicating the results of the self-test.
Parameters
Parameter
Name
Parameter
Type
Range of
Values
Default
numeric
1 to 75
none
<number>
Comments • Following the completion of this command, all outputs are disabled and set to
either 0 A or 0 V.
• If the module is in the wait-for-trigger state when this command is received, an
error is generated.
• Complete descriptions of each test and specific codes returned in the Test Info
field are contained in the HP E1418A Service Manual.
• A successful self-test returns 0.
• A failure of a self-test returns a non-zero 16-bit integer. The integer returned has
a binary coding of the form:
BIT
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Meaning
Test Number
A24
Test Info
• The description of *TST provides a brief listing of the test numbers.
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TEST
TEST:TST[:RESults]?
TEST:TST[:RESults]? returns an array showing the result of all self-tests
performed by the *TST? query.
Parameters None.
Comments • The *TST? query returns the result of the first failure found, if any. This query
provides a means to check all test failure codes.
• This command may be used if the value returned by the *TST? query is other than 0
and complete self-test results are needed.
• Complete descriptions of each test and specific codes returned in the Test Info and
A24 fields are contained in the HP E1418A Service Manual.
• This query returns an array of 100 16-bit integers (int16). The first array element
corresponds to test 1. Array elements above 75 are unused. Each 16-bit integer in
the array is in the form:
BIT
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Meaning
Test Number
A24
Test Info
• The description of *TST? provides a brief listing of the test numbers.
• Related Commands: *TST?
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TEST
*TST?
*TST? performs all internal self-tests on the module and returns a 16-bit integer
indicating the results of the self-test. All circuits on the module are tested up to the
output relay.
Parameters None.
Comments • Following the completion of this query, all outputs are disabled and set to either 0 A
or 0 V.
• If the module is in the wait-for-trigger state when this query is received, an error
is generated.
• The returned value indicates the first failure found. Complete test results (all failures
found) are reported by the query TEST:TST[:RESults]?.
• A successful self-test returns +0.
• A failure of a self-test returns a non-zero 16-bit integer. The integer returned has
a binary coding of the form:
BIT
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Meaning
Test Number
A24
Test Info
• Test number is the internal self-test number of the first failure found. The Test
Info and A24 fields contain information related to the failure in Test Number.
Test Number
1–25
Tested Area
Register Read and Writes.
26–41
Trigger Control for each Channel.
(test 26 corresponds to channel 1,
test 41 corresponds to channel 16)
42–43
44–59
VXIbus Interrupt Control.
Channel Voltage Output.
(test 44 corresponds to channel 1,
test 59 corresponds to channel 16)
60–75
Channel Current Output.
(test 60 corresponds to channel 1,
test 75 corresponds to channel 16)
• Complete descriptions of each test and specific codes returned in the Test Info
field are contained in the HP E1418A Service Manual.
• A subset of self-test is automatically run at power-on.
• Related Commands: TEST:TST[:RESults]?
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TRIGger
TRIGger
The TRIGger subsystem controls when and how the outputs are enabled.
Other commands, designed for use with the TRIGger subsystem are ABORt
and INITiate[:IMMediate].
Subsystem Syntax
TRIGger
[:IMMediate]
:SOURce <source>
:SOURce?
TRIGger[:IMMediate]
TRIGger[:IMMediate] triggers all channels waiting for trigger when the trigger
source has been set to either BUS or HOLD.
Parameters None.
Comments • To use this command to trigger outputs, the trigger source must be set to either
BUS or HOLD. An error is generated if other trigger sources are set.
• If this command is received and the module is not in the wait-for-trigger state, an
error is generated.
• Triggering is described in more detail on page 54.
• Related Commands: TRIGger:SOURce,
SOURcen:VOLTage[:LEVel][:IMMediate]:TRIGgered[:AMPLitude],
SOURcen:CURRent[:LEVel][:IMMediate]:TRIGgered[:AMPLitude]
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TRIGger
TRIGger:SOURce
TRIGger:SOURce sets the trigger source for the module.
Parameters
Parameter
Name
Parameter
Type
Range of
Values
Default
<source>
discrete
TTLT0, TTLT1, TTLT2, TTLT3, TTLT4,
TTLT5, TTLT6, TTLT7, BUS, HOLD,
IMM, or EXT
none
Comments • The <source> parameter defines the following trigger conditions:
<source>
TTLT0–TTLT7
BUS or HOLD
IMMediate
Trigger
Sets the trigger source to one of the VXIbus backplane trigger lines.
Sets software trigger. A *TRG, TRIG:IMM, or GET will trigger the output.
Places the trigger system in the wait-for-trigger state and then triggers the output.
Sets the trigger source to the EXTernal trigger line on the terminal module.
EXTernal
• If this command is received when the module is in the wait-for-trigger state, an
error is generated.
• This command set the source for the trigger in to the module. The module can also
output a trigger on the VXIbus TTLTrg lines using the OUTPut:TTLTrgn command.
• Triggering is described in more detail on page 54.
• Related Commands: TRIGger:SOURce?
• *RST Condition: Trigger source set to HOLD.
TRIGger:SOURce?
TRIGger:SOURce? queries the trigger source for the module.
Parameters Returns: string.
Comments • The query returns one of the following unquoted strings:
String
TTLTn
BUS
Trigger Source
VXIbus backplane trigger line n
Software trigger
HOLD
IMM
Trigger hold (reset state)
Immediate trigger
EXT
External trigger
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IEEE-488.2 Common Command Quick Reference
IEEE-488.2 Common Command Quick Reference
The following table lists the IEEE-488.2 Common (*) Commands that can be executed
by the HP E1418A D/A module. For more information about Common Commands,
consult ANSI/IEEE Standard 488.2-1987.
Note
These commands apply to many instruments and are not documented in detail here.
Command
*CLS
Title
Description
Clear status registers
Event status enable
Clears the event registers and request for OPC flag.
Sets bits in the Event Status Enable Register.
*ESE <mask>
*ESE?
Event status enable query
Event status register query
Identification query
Queries the Event Status Enable Register.
*ESR?
Queries and clears the contents of the Standard Event Status Register.
Returns the identification string of the module.
*IDN?
*OPC
Operation complete
Sets the Request for OPC flag when all pending operations have been
completed. Also sets the OPC bit in the Standard Event Register.
*OPC?
*RST
Operation complete query
Reset
Returns a 1 to the output queue when all pending operations are complete.
Disables all outputs. Rewrites calibration data from FLASH to RAM. Sets all
outputs to 0. Sets, if not jumpered, all outputs to voltage mode. Enables
trigger with source IMM.
*SRE <mask>
Service request enable
Sets the Service Request Enable bits and corresponding Serial Poll Status
Byte Register bits to generate a service request.
*SRE?
*STB?
*TST?
Service request enable query Queries the Service Request Enable Register.
Read status byte query
Self-test query
Queries the Status Byte Register.
Performs the internal self-test. Disables all outputs. Sets all outputs to 0.
Returns the first error found in a 16-bit integer. See page 103.
*WAI
Wait to continue
Trigger
Waits until all relays are settled and the idle trigger state is reached.
Causes an immediate trigger.
Defines a macro.
*TRG
*DMC
Define macro
Menu query
*GMC?
*PMC
Gets the results of a menu query.
Purges all macros from memory.
Lists macros by name.
Purge macros
List macros
*LMC?
*EMC <n>
*EMC? <n>
*RMC
Enable macro
Enable macro query
Remove macros
Enables execution of macro n.
Queries execution state of macro n.
Removes all macros.
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HP E1418A Command Quick Reference
HP E1418A Command Quick Reference
The following table summarizes commands for the HP E1418A.
Command
Description
APPLyn
:CURRent <value | MIN | MAX | DEF>
Closes the output relay and outputs a current on the
specified channel, n.
Closes the output relay and outputs a voltage on the
specified channel, n.
:VOLTage <value | MIN | MAX | DEF>
CALibration :CONDition?
:CONFigure:RESistance?
Queries the module type and calibration status. The query
returns four 16-bit unsigned integers.
Configures the module to perform calibration of the internal
calibration resistor and returns a 0 or 1 indicating the readiness
of the module.
:RESet
:STORe
:TEST?
Reloads, for module use, the calibration constants stored in
non-volatile memory.
Loads the non-volatile memory with the calibration constants
presently in use by the module.
Performs an internal check of the calibration of each
channel and returns an integer indicating the channel
calibration condition.
Sets a new internal calibration resistor constant used by the
module for current output.
:VALue:RESistance <value>
:CONFigure:CURRent?
Configures the channel for current mode calibration and
returns a 0 or 1 to indicate the channel’s readiness for
calibration.
CALibrationn
:CONFigure:VOLTage?
Configures the channel for voltage mode calibration and
returns a 0 or 1 to indicate the channel’s readiness for
calibration.
:VALue:CURRent? <value>
:VALue:VOLTage? <value>
Enters a measured calibration value and returns a value
indicating the current state of the calibration.
Enters a measured calibration value and returns a value
indicating the current state of the calibration.
DIAGnostic :CALibration:OUTPut[:MODE]
<CALBus | CHANnel>
Sets the voltage calibration path for the module to either the
CAL output terminals or each output channel.
:CALibration:OUTPut[:MODE]?
:CONFigure?
Queries the voltage calibration path for the module.
Returns six 16-bit words indicating the present settings of
the module.
:OUTPut:ALL[:STATe] <OFF | ON>
Opens or closes all channel output relays at once.
:SOURcen:FUNCtion:MODE
Changes the output mode of the channel without disabling
the channel output.
<CURRent | VOLTage>
:TRIGgered?
Returns a 16-bit word indicating the present trigger status of
the module.
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HP E1418A Command Quick Reference
Command
Description
OUTPut
Specifies which VXIbus TTLTRG line is enabled to source a
VXIbus trigger when the module is triggered.
:TTLTrgn[:STATe] <OFF | ON>
Queries the state of the specified VXIbus TTLTRG line for
use as a trigger output line.
:TTLTrgn[:STATe]?
[:STATe] <OFF | ON>
[:STATe]?
Opens or closes the specified channel output relay.
OUTPutn
SOURcen
Queries the state of the specified channel output relay and
returns a 0 or 1.
:CURRent[:LEVel][:IMMediate][:AMPLitude]
<value | MIN | MAX | DEF>
Outputs the current set in value at channel n when the
output relay is closed.
:CURRent[:LEVel][:IMMediate][:AMPLitude]? Queries the last output value written by
[<MIN | MAX | DEF>]
SOURcen:CURRent <value>.
:CURRent[:LEVel]:TRIGgered[:AMPLitude]
<value | MIN | MAX | DEF>
Outputs the current set in value at channel n when the
trigger conditions are satisfied and the output relay is closed.
:CURRent[:LEVel]:TRIGgered[:AMPLitude]?
[<MIN | MAX | DEF>]
Queries the last value written by either SOURn:CURR:TRIG
or SOURn:CURR[:IMM].
:FUNCtion:MODE <CURRent | VOLTage>
:FUNCtion:MODE?
Configures channel n for either current or voltage output.
Queries channel n for current or voltage output mode.
The query returns a string.
:VOLTage:[:LEVel][:IMMediate][:AMPLitude]
<value | MIN | MAX | DEF>
Outputs the voltage set in value at channel n when the
output relay is closed.
:VOLTage[:LEVel][:IMMediate][:AMPLitude]? Queries the last output value written by SOURn:VOLT[:IMM]
[<MIN | MAX | DEF>]
<value>.
:VOLTage[:LEVel]:TRIGgered[:AMPLitude]
<value | MIN | MAX | DEF>
Outputs the voltage set in value at channel n when the trigger
conditions are satisfied and the channel output relay is closed.
:VOLTage[:LEVel]:TRIGgered[:AMPLitude]? Queries the latest value written by either
[<MIN | MAX | DEF>]
SOURn:VOLT:TRIG or SOURn:VOLT[:IMM].
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HP E1418A Command Quick Reference
Command
Description
STATus
:OPERation:CONDition?
Returns the contents of the Operation Status Condition
Register. Reading the register does not affect its contents.
Specifies which bits of the associated Event Register are
included in bit 7 of the Status Byte Register. The Summary
bit is the bit-for-bit logical AND of the Event Register and the
unmasked bit(s).
:OPERation:ENABle <mask>
:OPERation:ENABle?
:OPERation[:EVENt]?
:PRESet
Returns the value of the mask set for the Operation Status
Register.
Returns the value of the contents of the Operation Status Event
Register. Reading the register clears all bits in the register.
Presets all Enable Registers to 0. The command has no
effect on Condition or Event Registers.
:QUEStionable:CONDition?
:QUEStionable:ENABle <mask>
Returns the value of the Questionable Status Condition
Register. Reading the register does not affect its contents.
Specifies which bits of the associated Event Register are
included in bit 3 of the Status Byte Register. The Summary
bit is the bit-for-bit logical AND of the Event Register and the
unmasked bits.
:QUEStionable:ENABle?
:QUEStionable[:EVENt]?
:ERRor?
Returns the mask set for the Questionable Status Enable
Register.
Returns the value of the Questionable Status Event
Register. Reading the register clears all bits in the register.
SYSTem
TEST
Returns an error number and message from the
instrument’s error queue.
:VERSion?
Returns the SCPI version with which the driver complies.
Performs a single internal self-test on the module and
returns a 16-bit integer indicating the results of the self-test.
:NUMBer? <number>
:TST[:RESults]?
Returns an array showing the result of all self-tests
performed by the *TST? query.
*TST?
Performs all internal self-tests on the module and returns a
16-bit integer indicating the results of the self-test.
TRIGger
[:IMMediate]
Triggers any channels waiting for trigger when the trigger
source is set to either BUS or HOLD.
:SOURce <source>
:SOURce?
Sets the trigger source for the module.
Queries the trigger source for the module.
ABORt
Disables the trigger system and places the module in the
idle state.
INITiate[:IMMediate]
Changes the trigger system from the idle state to the
wait-for-trigger state.
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HP E1418A Command Quick Reference
Notes
110 HP E1418A SCPI Command Reference
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Appendix A
HP E1418A Specifications
DC Voltage Range:
±16 V
Resolution:
16 bits (488 µV steps)
Monotonic to 2.0 mV
Accuracy:
±(% of value + volts)
After calibration and at a temperature within ±5 °C of calibration temperature.
90 day: ±(0.05% + 3.0 mV)
Output Current:
Compliance Current : >20 mA, 0 to ±12 Volts,
derate linearly to 5 mA at ±16 Volts
Short Circuit Current: <60 mA
Differential Ripple and Noise:
< 2 mV rms, 20 Hz to 250 kHz into 10 kΩ load
DC Current Range:
-0.02 Amps to +0.02 Amps
Resolution:
16 bits (610 nA steps)
Monotonic to 2.5 µA
Accuracy:
±(% of value + amps)
After calibration and at a temperature within ±5 °C of calibration
temperature.
90 day: ±(0.09% + 5.0 µA)
Output Voltage:
Compliance Voltage: ±12 V
Maximum Open Circuit Voltage: < 18 V
Differential Ripple and Noise:
< 2 µA rms, 20 Hz to 250 kHz into a 250 Ω load
Appendix A
HP E1418A Specifications 111
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General Settling Time:
300 µS (+full scale to –full scale step, single channel, to accuracy listed
previously)
Characteristics
Isolation (for isolated channels):
42 Vdc/42 V peak (channel-to-chassis or channel-to-channel)
Synchronization:
Software commands, External TTL trigger, or VXIbus TTL Trigger lines
Single channel or multiple channel
VXI Specification:
Device Type: A16 or A24, D16, slave only, register-based
Power
Requirements
Current Required (Amps)
Configuration
+ 5 V
DC
+ 5 V
Dynamic
+ 12 V
DC
+ 12 V
Dynamic
+ 24 V
DC
+ 24 V
Dynamic
– 24 V
DC
– 24 V
Dynamic
8 Channel
0.70
0.75
1.25
1.40
0.01
0.01
0.01
0.01
0.04
0.04
0.04
0.04
0.01
0.01
0.01
0.01
0.44
0.88
0.88
1.60
0.01
0.01
0.01
0.01
0.44
0.00
0.88
0.00
0.01
0.00
0.01
0.00
Non-Isolated
8 Channel
Isolated
16 Channel
Non-Isolated
16 Channel
Isolated
Cooling For a 10°C rise
Requirements
Avg
Watts/slot
Air Flow
∆ P
8 Channel
configurations
2.0
0.10 mm H2O
25.4
liters/second
16 Channel
configurations
3.9
0.18 mm H2O
49.0
liters/second
112 HP E1418A Specifications
Appendix A
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Appendix B
HP E1418A Register-Based Programming
The HP E1418A 8/16 Channel D/A Module is a register-based module. It does
not support the VXIbus word serial protocol. The module may be controlled at
the register level or, with appropriate drivers, controlled by higher level
commands.
The SCPI commands described in this manual are parsed by an HP E1405/
E1406 Command Module and turned into appropriate register reads and writes.
The same is true for HP Compiled SCPI programming in the C language.
In this case, SCPI commands are pre-processed by C-SCPI and replaced
with function calls to driver libraries that perform register-based
programming.
Note
If SCPI commands (or other high level driver-based commands) are used to
program this module with a command module, then register programming is
not recommended. The SCPI driver maintains an image of the module state.
The driver will be unaware of changes made to the module by register access.
Register-based programming is a series of reads and writes directly to the
module registers. This appendix contains the information you need for
register-based programming. The contents of this appendix are:
• Addressing the Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 114
• Reset and Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 119
• Register Maps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 120
• Register Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 126
• Register Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 148
Appendix B
HP E1418A Register-Based Programming 113
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Addressing the Registers
To access a specific register for either read or write operations, the address
of the register must be used. The HP E1418A uses both A16 and A24
register accesses.
A16 Registers Register addresses for the VXI module are found in an address space known as
VXI A16. The exact location of A16 within a VXIbus master’s memory map
depends on the design of the VXIbus master you are using. For the HP E1405/
E1406 Command Module, the A16 space location starts at 1F0000 .
16
The A16 space is divided so that the VXI modules are addressed only at
locations above 1FC000 within A16. Every VXI module is allocated
16
64 bytes for register addresses (40 ). The address of a module is determined
16
by its logical address (set by the address switches on the module or by a write
to the logical address register) times 64 (40 ). In the case of the HP E1418A,
16
the factory setting is 72 or 48 , so the addresses start at 1FD200 .
16
16
Figure B-1. Register Locations in A16 Address Space
114 HP E1418A Register-Based Programming
Appendix B
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Note
Writing an address to the Logical Address Register is typically performed
by the resource manager as a part of dynamic addressing. If the address is
changed by a write to the Logical Address Register, later accesses must use
the new address.
A24 Registers The HP E1418A requires 256 kbytes of A24 address space. The resource
manager determines the location in A24 space of the 256 kbytes assigned to
the HP E1418A and writes the most significant address lines into the A16
VXI_Offset Register (base + 06 ).
16
Figure B-2. Register Locations in A24 Address Space
Appendix B
HP E1418A Register-Based Programming 115
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A16/A24 Windows By using window addressing, you can control the A24 space registers by
mapping them onto the upper 16 of the A16 registers. This allows full
control of the HP E1418A using only A16 addressing. Figure B-3 shows
the A24 mapping into A16 space.
In practice, four bits (A24_Window Value) in the A16 Card Control
Register (base + 1E ) control which A24 registers map to the A16 space.
16
For example, if the A24_Window Value is set to 0010, the 16 Main_DAC
Write Immediate Registers are mapped to the A16 space. The Card Control
Register is described in more detail on page 137.
Figure B-3. A24 Windowing into the A16 Registers
116 HP E1418A Register-Based Programming
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The Base Address When reading or writing to a module register, a hexadecimal or decimal
register address must be specified. This address consists of a base address
plus a register offset. The base address used in register-based programming
depends on whether the A16 address space is outside or inside the HP E1405/
E1406 Command Module.
A16 Address Space When the HP E1405/E1406 Command Module is not part of your VXIbus
system (Figure B-1), the HP E1418A’s base address is computed as:
Outside the Command
Module
Base Address = C00016 + (LADDR16 * 4016)
or (decimal)
49,152 + (LADDR * 64)
where C000 (49,152) is the starting location of the register addresses,
16
LADDR is the module’s logical address (set either by the switches or using
dynamic addressing), and 64 is the number of address bytes per VXI device.
For example, the HP E1418A’s factory set logical address is 72 (48 ),
16
therefore it will have a base address of:
C00016 + (4816 * 4016) = C00016 + 120016 = D20016
or (decimal)
49,152 + (72 * 64) = 49,152 + 4608 = 53760
A16 Address Space When the A16 address space is inside the HP E1405/E1406 Command
Module (Figure B-2), the module’s base address is computed as:
Inside the Command
Module or Mainframe
Base Address = 1FC00016 + (LADDR * 40)16
or
2,080,768 + (LADDR * 64)
where 1FC000 (2,080,768) is the starting location of the VXI A16
16
addresses, LADDR is the module’s logical address (set either by the
switches or using dynamic addressing), and 64 is the number of address
bytes per register-based device. The HP E1418A’s factory set logical
address is 72. If this address is not changed, the module will have a base
address of:
1FC00016 + (4816 * 4016) = 1FC00016 + 120016 = 1FD20016
or
2,080,768 + (72 * 64) = 2,080,768 + 4608 = 2,085,376
Appendix B
HP E1418A Register-Based Programming 117
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Register Offset The register offset is the register’s location in the block of 64 bytes that
belong to the module. For example, the module’s Status/Control Register
has an offset of 04 . When you write a command to this register, the offset
16
is added to the base address to form the register address:
register_address = base_address + register _offset
Outside the command module:
D20016 + 0416 = D20416
53,760 + 4 = 53,764
In the command module:
1FD20016 + 0416 = 1FD20416
2,085,376 + 4 = 2,085,380
Table B-1 shows some general programming methods for accessing the
HP E1418A registers using different computers.
Table B-1. Register Access
System
Typical Commands
Base Address
VXI:READ? logical_address, offset
VXI:WRITE logical_address, offset, data
logical_address = LADDR
offset = register number
External Computer
(over HP-IB to
E1405/E1406
DIAG:PEEK? Base_addr + offset, width Base_addr = 1FC00016 + (LADDR16 * 4016)
Command Module) DIAG:POKE Base_addr + offset, width, data
(width must be either 8 or 16)
or
= 2,080,768 + (LADDR * 64)
offset = register number
READIO (-18, Base_addr + offset)
Base_addr = C00016 + (LADDR16 * 4016)
V/382 Embedded
Computer
WRITEIO (-18, Base_addr + offset; data)
or
= 49,152 + (LADDR * 64)
(positive select code = byte read or write
negative select code = word read or write)
offset = register number
SICL
iwpoke(Base_addr + offset,data)
iwpeek(Base_addr + offset)
imap(id,I_MAP_VXIDEV,0,0,NULL)
LADDR = HP E1418A Logical Address = 72 = 4816
118 HP E1418A Register-Based Programming
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Reset and Registers
Following power-on or a *RST command, the registers are put into the
following states:
– The Manufacturer ID and Device ID Registers remain unaffected.
– The Channel Mode Register (base + 1A ) is set to voltage output
16
for all channels (FFFF ) or is set to the state set by the V/I jumper
16
(described on page 31) if the P/J jumper is in the jumper selectable
position.
– The Channel Program Jumper Register (base + 16 ) is set to program
16
selectable for all channels (FFFF ) or to the position of the P/J jumper
16
(described on page 31).
– The Channel Relay Control Register (base + 1C ) is set to open all
16
channel relays (FFFF ).
16
– The Isolation Status Register (base + 14 ) reflects the isolated/
16
non-isolated configuration of each channel.
– The Calibration Control Register (base +08 ) is set to calibrate
16
voltage with the cal mux disabled (2000 ).
16
– Channel Trigger Register (base + 18 ) is set to 0000 if the
16
16
module is a 16-channel configuration or FF00 if an 8-channel
16
configuration.
Note
The upper 8-bits of all channel related registers are set to 1’s (FF ) for
8-channel configurations.
16
Appendix B
HP E1418A Register-Based Programming 119
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Register Maps
A16/A24 REGISTERS
Address
Read Registers
ID Register
Write Registers
Type
Base + 0016
Base + 0216
Base + 0416
Base + 0616
Base + 0816
Logical Address Register
VXI
Required
Registers
Device Type Register
VXI Status Register
VXI Control Register
VXI Offset Register
Calibration Control Register
Card Configuration Register
Card
Control
Registers
Base + 0A16
Base + 0C16
Base + 0E16
Base + 1016
Base + 1216
Base + 1416
Base + 1616
Base + 1816
Base + 1A16
Base + 1C16
Base + 1E16
Software Trigger Register
Trigger Control Register
Interrupt Control Register (Not Supported)
Interrupt Status Register (Not Supported)
Isolation Status Register
Chan Prog_Jumper Register
Chan_Trigger Register
Channel
Control
Registers
Chan_Mode Register
Chan Relay Control Register
Card Control Register
A24 Access
Register
Base + 2016
through
Base + 3E16
Remapped A24 Registers
A24
Window
Registers
120 HP E1418A Register-Based Programming
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A24 REGISTERS
Address
Read Registers
Write Registers
Type
Base + 4016
Base + 4216
Base + 4416
Base + 4616
Base + 4816
Base + 4A16
Base + 4C16
Base + 4E16
Base + 5016
Base + 5216
Base + 5416
Base + 5616
Base + 5816
Base + 5A16
Base + 5C16
Base + 5E16
Base + 6016
Base + 6216
Base + 6416
Base + 6616
Base + 6816
Base + 6A16
Base + 6C16
Base + 6E16
Base + 7016
Base + 7216
Base + 7416
Base + 7616
Base + 7816
Base + 7A16
Base + 7C16
Base + 7E16
Ch 01 Main_DAC Immediate
Ch 02 Main_DAC Immediate
Ch 03 Main_DAC Immediate
Ch 04 Main_DAC Immediate
Ch 05 Main_DAC Immediate
Ch 06 Main_DAC Immediate
Ch 07 Main_DAC Immediate
Ch 08 Main_DAC Immediate
Ch 09 Main_DAC Immediate
Ch 10 Main_DAC Immediate
Ch 11 Main_DAC Immediate
Ch 12 Main_DAC Immediate
Ch 13 Main_DAC Immediate
Ch 14 Main_DAC Immediate
Ch 15 Main_DAC Immediate
Ch 16 Main_DAC Immediate
Ch 01 Main_DAC Triggered
Ch 02 Main_DAC Triggered
Ch 03 Main_DAC Triggered
Ch 04 Main_DAC Triggered
Ch 05 Main_DAC Triggered
Ch 06 Main_DAC Triggered
Ch 07 Main_DAC Triggered
Ch 08 Main_DAC Triggered
Ch 09 Main_DAC Triggered
Ch 10 Main_DAC Triggered
Ch 11 Main_DAC Triggered
Ch 12 Main_DAC Triggered
Ch 13 Main_DAC Triggered
Ch 14 Main_DAC Triggered
Ch 15 Main_DAC Triggered
Ch 16 Main_DAC Triggered
Channel Main DAC
Immediate Registers
(New output values
appear immediately when
the output relay is closed)
Channel Main DAC
Triggered Registers
(New output values
appear after the next
trigger event when the
output relay is closed)
Appendix B
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Address
Read Registers
Write Registers
Ch 01 Offset_DAC
Ch 02 Offset_DAC
Ch 03 Offset_DAC
Ch 04 Offset_DAC
Ch 05 Offset_DAC
Ch 06 Offset_DAC
Ch 07 Offset_DAC
Ch 08 Offset_DAC
Ch 09 Offset_DAC
Ch 10 Offset_DAC
Ch 11 Offset_DAC
Ch 12 Offset_DAC
Ch 13 Offset_DAC
Ch 14 Offset_DAC
Ch 15 Offset_DAC
Ch 16 Offset_DAC
Ch 01 Gain_DAC
Ch 02 Gain_DAC
Ch 03 Gain_DAC
Ch 04 Gain_DAC
Ch 05 Gain_DAC
Ch 06 Gain_DAC
Ch 07 Gain_DAC
Ch 08 Gain_DAC
Ch 09 Gain_DAC
Ch 10 Gain_DAC
Ch 11 Gain_DAC
Ch 12 Gain_DAC
Ch 13 Gain_DAC
Ch 14 Gain_DAC
Ch 15 Gain_DAC
Ch 16 Gain_DAC
Type
Base + 8016
Base + 8216
Base + 8416
Base + 8616
Base + 8816
Base + 8A16
Base + 8C16
Base + 8E16
Base + 9016
Base + 9216
Base + 9416
Base + 9616
Base + 9816
Base + 9A16
Base + 9C16
Base + 9E16
Base + A016
Base + A216
Base + A416
Base + A616
Base + A816
Base + AA16
Base + AC16
Base + AE16
Base + B016
Base + B216
Base + B416
Base + B616
Base + B816
Base + BA16
Base + BC16
Base + BE16
Channel Offset DAC
Registers
Channel Gain DAC
Registers
Base + C016 through
Base + FE16
Undefined
Not Used
122 HP E1418A Register-Based Programming
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Address
Read Registers
Write Registers
Type
Base + 10016
Base + 10216
Base + 10416
Base + 10616
Base + 10816
Base + 10A16
Base + 10C16
Base + 10E16
Base + 11016
Base + 11216
Base + 11416
Base + 11616
Base + 11816
Base + 11A16
Base + 11C16
Base + 11E16
Base + 12016
Base + 12216
Base + 12416
Base + 12616
Base + 12816
Base + 12A16
Base + 12C16
Base + 12E16
Base + 13016
Base + 13216
Base + 13416
Base + 13616
Base + 13816
Base + 13A16
Base + 13C16
Base + 13E16
Ch 01 Voltage Offset_Cal
Channel Voltage Offset
Cal Storage Registers
Ch 02 Voltage Offset_Cal
Ch 03 Voltage Offset_Cal
Ch 04 Voltage Offset_Cal
Ch 05 Voltage Offset_Cal
Ch 06 Voltage Offset_Cal
Ch 07 Voltage Offset_Cal
Ch 08 Voltage Offset_Cal
Ch 09 Voltage Offset_Cal
Ch 10 Voltage Offset_Cal
Ch 11 Voltage Offset_Cal
Ch 12 Voltage Offset_Cal
Ch 13 Voltage Offset_Cal
Ch 14 Voltage Offset_Cal
Ch 15 Voltage Offset_Cal
Ch 16 Voltage Offset_Cal
Ch 01 Voltage Gain_Cal
Ch 02 Voltage Gain_Cal
Ch 03 Voltage Gain_Cal
Ch 04 Voltage Gain_Cal
Ch 05 Voltage Gain_Cal
Ch 06 Voltage Gain_Cal
Ch 07 Voltage Gain_Cal
Ch 08 Voltage Gain_Cal
Ch 09 Voltage Gain_Cal
Ch 10 Voltage Gain_Cal
Ch 11 Voltage Gain_Cal
Ch 12 Voltage Gain_Cal
Ch 13 Voltage Gain_Cal
Ch 14 Voltage Gain_Cal
Ch 15 Voltage Gain_Cal
Ch 16 Voltage Gain_Cal
(non-volatile)
Channel Voltage Gain
Cal Storage Registers
(non-volatile)
Appendix B
HP E1418A Register-Based Programming 123
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Address
Read Registers
Write Registers
Type
Base + 14016
Base + 14216
Base + 14416
Base + 14616
Base + 14816
Base + 14A16
Base + 14C16
Base + 14E16
Base + 15016
Base + 15216
Base + 15416
Base + 15616
Base + 15816
Base + 15A16
Base + 15C16
Base + 15E16
Base + 16016
Base + 16216
Base + 16416
Base + 16616
Base + 16816
Base + 16A16
Base + 16C16
Base + 16E16
Base + 17016
Base + 17216
Base + 17416
Base + 17616
Base + 17816
Base + 17A16
Base + 17C16
Base + 17E16
Ch 01 Current Offset_Cal
Channel Current Offset
Cal Storage Registers
Ch 02 Current Offset_Cal
Ch 03 Current Offset_Cal
Ch 04 Current Offset_Cal
Ch 05 Current Offset_Cal
Ch 06 Current Offset_Cal
Ch 07 Current Offset_Cal
Ch 08 Current Offset_Cal
Ch 09 Current Offset_Cal
Ch 10 Current Offset_Cal
Ch 11 Current Offset_Cal
Ch 12 Current Offset_Cal
Ch 13 Current Offset_Cal
Ch 14 Current Offset_Cal
Ch 15 Current Offset_Cal
Ch 16 Current Offset_Cal
Ch 01 Current Gain_Cal
Ch 02 Current Gain_Cal
Ch 03 Current Gain_Cal
Ch 04 Current Gain_Cal
Ch 05 Current Gain_Cal
Ch 06 Current Gain_Cal
Ch 07 Current Gain_Cal
Ch 08 Current Gain_Cal
Ch 09 Current Gain_Cal
Ch 10 Current Gain_Cal
Ch 11 Current Gain_Cal
Ch 12 Current Gain_Cal
Ch 13 Current Gain_Cal
Ch 14 Current Gain_Cal
Ch 15 Current Gain_Cal
Ch 16 Current Gain_Cal
(non-volatile)
Channel Current Gain
Cal Storage Registers
(non-volatile)
124 HP E1418A Register-Based Programming
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Address
Read Registers
Write Registers
Type
Base + 18016
Base + 18216
Base + 18416
Base + 18616
Base + 18816
Base + 18A16
Base + 18C16
Base + 18E16
Base + 19016
Base + 19216
Base + 19416
Base + 19616
Base + 19816
Base + 19A16
Base + 19C16
Base + 19E16
Base + 1A016
Base + 1A216
Base + 1A416
Base + 1A616
Base + 1A816
Base + 1AA16
Base + 1AC16
Base + 1AE16
Base + 1B016
Base + 1B216
Base + 1B416
Base + 1B616
Base + 1B816
Base + 1BA16
Base + 1BC16
Base + 1BE16
Calibration resistor value
Calibration Registers
Calibration resistor value
Voltage calibration status
Current calibration status
Calibration isolation status
Calibration card configuration
Calibration checksum
(non-volatile)
SERIAL NUMBER
Module Serial Number
Registers
(10 byte serial number)
(non-volatile)
Undefined calibration memory
Undefined Calibration
Storage Registers
(non-volatile)
Note
Calibration Registers 00100 through 001BE are located in non-volatile
16 16
(FLASH) memory. Writing to this memory requires a complicated sequence
of register accesses not documented here. It is recommended that calibration
be performed using the SCPI driver for the module, not register access.
Appendix B
HP E1418A Register-Based Programming 125
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Register Descriptions
Manufacturer ID The Manufacturer ID Register is a VXIbus required register. A read of this
register returns CFFF (-12289 decimal).
16
Register
Bit Position
Setting
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Address
Base + 0016
1
1
0
0
1
1
1
1
1
1
1
1
1
1
1
1
READ
Device Address
Class Mode
Manufacturer’s ID Code
Device Class: The HP E1418A is a register-based device.
Address Mode: The HP E1418A uses the A16/A24 address mode.
Manufacturer ID Code: Identifies Hewlett-Packard as the device
manufacturer.
Logical Address The module supports Dynamic Configuration. The module’s logical
address is set in bits 0 through 7 of the Logical Address Register.
Register
Bit Position
Setting
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Address
Base + 0016
Undefined
Undefined
0016–FF16
WRITE
Logical Address Setting
Logical Address Setting: Bits 0 through 7 of this register is set by either:
– the logical address switch settings following power-up or system reset,
or
– by a write to this register during Dynamic Configuration.
When bits 0–7 are set to a value of 255 (FF ) the device is available for
16
selection via Dynamic Configuration, and when MODID is asserted the
module will respond. Typically, this is only done once at power-up or
system reset and the desired logical address is written into the register bits 0
through 7. With any other Logical Address Register setting, the module
will not be accessible via MODID. The content of this register is compared
with address lines 6 through 13 from the backplane to determine module
accesses in A16 space.
Note
Writes to this register can be made at any time and will change the logical
address of the module for later accesses.
126 HP E1418A Register-Based Programming
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Device Type The Device Type Register is a VXIbus required register. This register
indicates the module’s configuration as either an 8-channel DAC or a
Register
16-channel DAC. A read of this register returns 5230 (21040 decimal) if
16
the module is configured as a 16-channel DAC, or 5237 (21047 decimal)
16
if the module is configured as an 8-channel DAC.
Bit Position
Setting
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Address
Base + 0216
516
23016 or 23716
Model Codes
READ
Required Memory
Required Memory: The HP E1418A requires 256 kbytes of A24 address
space.
Model Codes: The model codes for the HP E1418A are shown in the table
below.
Configuration
Model-Code
Value
Register Read
Value
16-channel DAC
8-channel DAC
23016
23716
523016
523716
VXI Status/Control The VXI Status/Control Register is a VXIbus required register. As a READ
register, the value returned indicates the status of A24 memory access, the
Register
MODID* line, and module readiness. As a WRITE register, the value
written can control the state of the A24 memory access, the control of the
VXIbus SYSFAIL* line, and perform a module reset.
Bit
15
14
13 12 11 10 09 08 07 06 05 04
Unused
03
02
01
00
Address
Base + 0416
READ
A24 MODID*
ACT
Ready Passed
Unused
WRITE A24
EN
Unused
SYSINH RESET
READ A24 ACT: A one (1) in this field indicates that A24 memory can be
accessed (is active) via A24 addressing. A zero (0) indicates that A24
memory cannot be accessed via A24 addressing (is inactive). This bit
reflects the state of the write register A24 EN bit.
MODID*: A one (1) in this field indicates the module is not selected via
the P2 MODID line. A zero (0) in this field indicates the module is selected
by a high state on the P2 MODID line.
Ready: A one (1) in this field, together with a one (1) in the Passed bit,
indicates the module is ready for operation. A zero (0) in this field, together
with a 0 in the Passed bit, indicates the module failed initialization.
Appendix B
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Passed: A one (1) in this field indicates the module has finished a reset or
has completed module initialization. A zero (0) in this field indicates the
module is executing a reset or has failed module initialization.
WRITE A24 EN: Writing a one (1) to this field enables access to the A24 address
space via A24 addressing. Writing a zero (0) to this field disables access to
the A24 address space.
SYSINH: Writing a one (1) to this field disables the module from driving
the VXIbus SYSFAIL* line. Writing a zero (0) enables the module to drive
SYSFAIL*.
RESET: Writing a one (1) and then a zero (0) to this field performs a
module reset. Writing a one (1) to this field forces the module into the reset
state. The module is held in the reset state until a zero (0) is written to this
field.
VXI Offset Register The VXI Offset Register is a VXIbus required register. The offset register
defines the base address of the module’s A24 address space.
Bit
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Address
Base + 0616
READ
WRITE
A24 Offset
A24 Offset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
A24 Offset: This field is the six most significant bits of the module’s A24
base address.
Bits 0 through 9 are always zero (0).
128 HP E1418A Register-Based Programming
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Calibration Control The Calibration Control Register sets and reports calibration conditions.
Register
Bit
15
14
13
12
En
11 10 09 08 07 06 05 04 03 02 01 00
READ
Cal
Bus En Bsy
A/D Cal Mode Cal Mux
Cal Mux Chan
Address
A/D Reading Value
Address
Base + 0816
WRITE
Cal
A/D Cal Mode Cal Mux
Cal Mux Chan
Address
A/D
Scale
Unused
Bus En Trg Sel En
READ Cal Bus En: A one (1) in this field indicates the cal bus is connected. A
zero (0) in this field indicates the cal bus is not connected. This bit reflects
the state of the last write to Cal Bus En field.
A/D Bsy: A one (1) in this field indicates the A/D is taking a reading. A
zero (0) in this field indicates a new reading is available.
Cal Mode: A one (1) in this field indicates the calibration system is set to
calibrate voltage. A zero (0) in this field indicates the calibration system is
set to calibrate current. This bit reflects the state of the last write to Cal
Mode Sel field.
Cal Mux En: A one (1) in this field indicates the Cal Mux is enabled. A
zero (0) in this field indicates the Cal Mux is disabled (high-impedance).
This bit reflects the state of the last write to Cal Mux En field.
Cal Mux Chan Address: This field returns the channel selected for
calibration. This bit reflects the state of the last write to Cal Mux Chan
Address field. The channel address, expressed in hexadecimal, has values
from 0 through F corresponding to channels 1 through 16, respectively.
16
16
A/D Reading Value: This field returns the latest reading taken by the A/D.
When A/D Scale is set to 0, the actual voltage represented by the reading
value is given as:
33.6 V
Voltage = 16.8 V −
∗ AD Reading Value
255 steps
When A/D Scale is set to 1, the actual voltage represented by the reading
value is given as:
33.6 V
AD Reading Value
Voltage = 16.8 V −
∗
255 steps
13.7
WRITE Cal Bus En: Writing a one (1) in this field connects the cal bus. Writing a
zero (0) in this field disconnects the cal bus.
A/D Trg: Writing a one (1) in this field begins an A/D reading. Writing a zero
(0) in this field during a reading in progress will corrupt the reading. Do not
combine this bit setting with other bits in this register (write only this bit).
Appendix B
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Cal Mode Sel: Writing a one (1) in this field sets the calibration system to
calibrate voltage. Writing a zero (0) in this field sets the calibration system
to calibrate current. This bit controls a relay that requires approximately 5 mS
to change states.
Cal Mux En: Writing a one (1) in this field enables the Cal Mux. Writing a
zero (0) in this field disables the Cal Mux.
Cal Mux Chan Address: The address of the channel selected is written to
this field. The channel address, expressed in hexadecimal, has values from
0
16
through F corresponding to channels 1 through 16, respectively. This
16
field only has effect when the Cal Mux En field is set to one (1).
A/D Scale: This bit changes the A/D scaling. When set to 0, normal A/D
scaling is used. When set to 1, A/D scaling is divided by 13.7. This bit is
used by self-test to test gain and offset DACs.
Card Configuration The Card Configuration Register returns information about the module
configuration and terminal module in use.
Register
Address
Base + 0A16
Bit
15
14
13 12 11 10 09 08 07 06 05 04 03 02 01 00
Undefined Configuration Terminal
READ
Configuration: When the module is configured as an 8-channel DAC, all
bits in this field are set to one (1). When the module is configured as a
16-channel DAC, all bits in this field are set to zero (0).
Terminal: This field returns information about the terminal module.
Bits
Terminal
02 01 00
Installed
Screw Type Terminal
No Terminal Installed
0
1
0
1
0
1
Note
The Terminal bits reflect the state of the of the TERMINAL ID 1,
TERMINAL ID 2, and TERMINAL ID 3 lines in the output connector. If
you are not using the screw-type terminal module, these bits may be set to
any value desired by shorting the line to ground. Refer to the diagram on
page 30 for the line locations.
130 HP E1418A Register-Based Programming
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Software Trigger The Software Trigger Register provides a means to trigger the module when
software trigger has been selected as the trigger source in the Trigger
Control Register.
Register
Address
Base + 0C16
Bit
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Software Trigger
WRITE
Software Trigger: When software trigger is selected as the trigger source
in the Trigger Control Register, any write to this register generates the
trigger (the value written is not important).
Trigger Control The Trigger Control Register selects the sources, destinations, and modes
used to synchronize channels programmed for triggered operation.
Register
Bit
15
14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Address
Base + 0E16
READ
WRITE
Trig
Syst En
Unused
Trigger Out
Trigger
Mode
Trigger Source
Trig Syst En: Writing a one (1) to this field enables the trigger system.
Writing a zero (0) disables the trigger system.
Trigger Out: This field selects which VXIbus trigger line will be driven when
the trigger mode is set to Output. The trigger lines selected are shown below.
Bits
Line Out Selected
08 07 06
TTLTRIG0*
TTLTRIG1*
TTLTRIG2*
TTLTRIG3*
TTLTRIG4*
TTLTRIG5*
TTLTRIG6*
TTLTRIG7*
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
Trigger Mode: This field selects the operating mode for trigger-enabled
channels.
Bits
Trigger Mode
05 04
SYNC
0
1
0
1
OUTPUT
Appendix B
HP E1418A Register-Based Programming 131
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Trigger Source: This field selects the trigger source for trigger-enabled
channels.
Bits
Trigger Source Selected
03 02 01 00
TTLTRIG0*
TTLTRIG1*
0
0
0
0
0
0
0
0
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
0
0
1
1
0
0
0
1
0
1
0
1
0
1
0
1
TTLTRIG2*
TTLTRIG3*
TTLTRIG4*
TTLTRIG5*
TTLTRIG6*
TTLTRIG7*
SOFTWARE TRIGGER
EXTERNAL TRIGGER
Using the Trigger To set up the Trigger Control Register for the VXIbus trigger types:
Control Register
SYNC mode: This mode allows the card to receive a trigger from one of
the VXI backplane TTL trigger lines. To set the VXIbus SYNC trigger
mode, the Trigger Mode field is set to SYNC (00) and the Trigger Source
field is set to one of the *TTLTRIG lines. The Trigger Out field is not used.
OUTPUT mode: This mode allows the card to receive a trigger from one
TTL trigger line and also source a trigger on another TTL trigger line. The
output mode is not a VXIbus defined trigger mode. The output mode is
used to synchronize additional modules. The Trigger Mode field is set to
OUTPUT (11), the Trigger Source field is set one of the *TTLTRIG lines,
and the Trigger Out field is set to a different *TTLTRIG line.
132 HP E1418A Register-Based Programming
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Interrupt Status The Interrupt Status Register shows the state of the trigger ignored interrupt
condition. The bit is a strobed interrupt source.
Register
Bit
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Address
Base + 1216
READ
WRITE
Unused
TRG
IGN
Unused
TRG IGN: This field is set to a one (1) if the trigger ignored condition exists.
Isolation Status The Isolation Status Register reports the plug-on module isolated/non-isolated
configuration for each channel.
Register
Bit
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Address
Base + 1416
READ Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch
16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01
ISO ISO ISO ISO ISO ISO ISO ISO ISO ISO ISO ISO ISO ISO ISO ISO
Ch XX ISO: Each field will return a one (1) if the channel has a non-isolated
plug-on installed. A zero (0) indicates an isolating plug-on is installed.
Notes
A channel will not function without a plug-on module installed. A one (1)
indicates either a non-isolated plug-on is installed or that no plug-on module
is installed. DO NOT operate the module without a plug-on module
installed on every channel.
For 8-Channel configurations, the upper 8 bits (channels 09 through 16) are
set to 1’s (FF ).
16
Appendix B
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Channel Program The Channel Program Jumper Register returns the state of the P/J jumper on
each channel. Additional information about these jumpers is given on page 31.
Jumper Register
Bit
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Address
Base + 1616
READ Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch
16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01
Jmpr Jmpr Jmpr Jmpr Jmpr Jmpr Jmpr Jmpr Jmpr Jmpr Jmpr Jmpr Jmpr Jmpr Jmpr Jmpr
Ch XX Jmpr: A one (1) in a field indicates that the P/J jumper is in the
program selectable position. A zero (0) indicates the P/J jumper is set to the
jumper selectable position.
When the P/J jumper is in the program selectable position (1), the channel
can be programmed to either the voltage or current mode from the VXIbus
backplane. When the P/J jumper is in the jumper selectable position (0), the
voltage or current output mode is set via the V/I jumper on the terminal
module and can not be programmed from the VXIbus backplane.
Note
Channels 09 through 16 will return ones (1) if the module is configured as
an 8-channel device.
134 HP E1418A Register-Based Programming
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Channel Trigger The Channel Trigger Register reports the trigger status for each channel.
Register
Bit
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Address
Base + 1816
READ Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch
16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01
TM TM TM TM TM TM TM TM TM TM TM TM TM TM TM TM
Ch XX TM: A one (1) in a field indicates a value has been written to the
channel Main DAC Triggered Register, but the output is not enabled until the
trigger is received. A zero (0) in a field indicates a trigger will have no effect
on the channel. The trigger events are set in the Trigger Control Register.
Notes
You can output an immediate value on a channel that has been set for
triggered operation by writing a value to the Main_DAC Immediate
Register. The trigger mode for that channel is changed to the immediate
write-thru mode.
You can set a value on a channel to be applied at the next trigger event by
writing a value to the Main_DAC Triggered Register. The trigger status for
that channel will be changed to triggered.
Channels 09 through 16 will return ones (1) if the module is configured as
an 8-channel device.
Appendix B
HP E1418A Register-Based Programming 135
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Channel Mode The Channel Mode Register reports or programs the voltage or current
operating mode for each channel.
Register
Bit
15
14
13
14
12
13
11
12
10
11
09
10
08
09
07
08
06
07
05
06
04
05
03
04
02
03
01
02
00
01
Address
Base + 1A16
READ Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch
16
15
WRITE
Mode Mode Mode Mode Mode Mode Mode Mode Mode Mode Mode Mode Mode Mode Mode Mode
Ch XX Mode: Writing a one (1) to this field selects the voltage output
mode for that channel. Writing a zero (0) to this field selects the current
output mode for that channel.
The mode program jumpers on the terminal module override values written
to this register. When the P/J jumper for a channel is set to jumper
selectable, writing to this register has no effect.
Reading this register returns the channel mode. The channel mode is
reported in this register for both VXIbus backplane programming and
jumper programming on the terminal module.
Note
Channels 09 through 16 will return ones (1) if the module is configured as
an 8-channel device.
Channel Relay The Channel Relay Control Register programs and reports the state of each
channel relay.
Control Register
Bit
15
14
13
14
12
13
11
12
10
11
09
10
08
09
07
08
06
07
05
06
04
05
03
04
02
03
01
02
00
01
Address
Base + 1C16
READ Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch
16
15
WRITE
Relay Relay Relay Relay Relay Relay Relay Relay Relay Relay Relay Relay Relay Relay Relay Relay
Ch XX Relay: Writing a one (1) to this field opens the channel relay.
Writing a zero (0) to this field closes the channel relay. The write operation
will complete before the relays change state. The relays take approximately
5 milliseconds to change state.
Reading this register returns a one (1) in each field if the channel relay is
programmed open and a zero (0) if the channel relay is programmed closed.
Note
Channels 09 through 16 will return ones (1) if the module is configured as
an 8-channel device.
136 HP E1418A Register-Based Programming
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Card Control The Card Control Register allows for access to the A24 address space from
the A16 address space. It also provides access to the non-volatile memory.
Register
Bit
15 14 13 12 11 10 09 08 07 06 05
Unused
04
03 02 01 00
A24 Window
Address
Base + 1E16
READ
WRITE
VPPEN
VPPEN: Writing a one (1) to this field enables the non-volatile memory to be
altered. Writing a zero (0) disables updates or erasures of the non-volatile
memory. Non-volatile memory is located at base + 100 to base + 200 .
16
16
Note
The VPPEN field enables or disables the programming voltage needed to
change the contents of the non-volatile memory. A physical jumper on the
main printed circuit board must also be moved to the CAL position before
the contents of the non-volatile memory can be altered.
A24 Window: Writing a value to this field sets which 16 register-wide portion
of A24 registers can be accessed via A16 registers 20 to 3E . The registers
16
16
mapped for each value are shown below and in Figure B-3 on page 116.
A24 Window Value
A24 Registers Mapped
A16 0016 through 1E16
016
116
216
316
416
516
616
716
816
916
A16
B16
C16
D16
E16
F16
A16 2016 through 3E16
Main_DAC Immediate Registers
Main_DAC Triggered Registers
Offset_DAC Registers
Gain_DAC Registers
Undefined
Undefined
Voltage Offset Cal Memory (non-volatile)
Voltage Gain Cal Memory (non-volatile)
Current Offset Cal Memory (non-volatile)
Current Gain Cal Memory (non-volatile)
Cal and Configuration Registers (non-volatile)
Undefined Cal Memory (non-volatile)
Undefined Cal Memory (non-volatile)
Undefined Cal Memory (non-volatile)
Appendix B
HP E1418A Register-Based Programming 137
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Notes
Each incremental value of the A24 Window offsets the window by 32 bytes.
Up to 512 bytes of A24 space can be pointed to.
A24 Window values 8 through F point to Calibration Registers.
16
16
Calibration Registers 00100 through 001BE are located in non-volatile
16
16
(FLASH) memory. Writing to this memory requires a complicated sequence
of register accesses not documented here. It is recommended that calibration
be performed using the SCPI driver for the module, not register access.
Main_DAC The Main_DAC Immediate Registers are used to program the next output
value on a channel. There are 16 registers, one for each output channel. The
Immediate
Registers
register at base + 40 programs channel 1, base + 42 programs channel 2,
16
16
up to base +5E to program channel 16. Values loaded in these registers are
16
applied to the output immediately (no trigger condition is required).
Bit
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Output Value
Address
WRITE
Base + 4016
through
Base + 5E16
Output Value: Writing a 16-bit value to this field outputs the value on the
channel selected by the base address. The 16-bit value is a 2’s complement
number. Scaling is based upon 16 V maximum for voltage mode and .020
Amps for current mode.
Main_DAC The Main_DAC Triggered Registers are used to program the next output
value on a channel. There are 16 registers, one for each output channel.
Triggered Registers
The register at base + 60 programs channel 1, base + 62 programs
16
16
channel 2, up to base +7E to program channel 16. Values loaded in these
16
registers are applied to the output(s) following the next trigger event.
Bit
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Output Value
Address
Base + 6016
through
WRITE
Base + 7E16
Output Value: Writing a 16-bit value to this field outputs the value on the
channel selected by the base address. The 16-bit value is a 2’s complement
number. Scaling is based upon 16 V maximum for voltage mode and
.020 Amps for current mode.
138 HP E1418A Register-Based Programming
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Note
The Main_DAC Triggered Registers, together with the Trigger Control
Register, can be used to provide synchronized output changes on multiple
channels.
Offset_DAC The Offset_DAC Registers are used to program the next offset value on a
channel. There are 16 registers, one for each output channel. The register
Registers
at base + 80 programs channel 1, base + 82 programs channel 2, up to
16
16
base +9E to program channel 16. Values loaded in these registers are
16
applied to the output immediately (no trigger condition is required).
Address
Base + 8016
through
Bit
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
msb
lsb
Base + 9E16
WRITE
Unused
Output Value
Output Value: Writing a 12-bit value to this field outputs the value on the
channel selected by the base address. Values are in the range:
00016
80016
FFF16
maximum positive offset
nominal (zero) offset
maximum negative offset
Note
A different offset value is required for voltage and current output operation.
Gain_DAC The Gain_DAC Registers are used to program the next gain value on a
channel. There are 16 registers, one for each output channel. The register
Registers
at base + A0 programs channel 1, base + A2 programs channel 2, up to
16
16
base BE to program channel 16. Values loaded in these registers are
16
applied to the output immediately (no trigger condition is required).
Address
Base + A016
through
Bit
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
msb
lsb
Base + BE16
WRITE
Unused
Output Value
Output Value: Writing a 12-bit value to this field outputs the value on the
channel selected by the base address. Values are in the range:
00016
80016
FFF16
minimum gain
nominal gain
maximum gain
Appendix B
HP E1418A Register-Based Programming 139
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Note
A different gain value is required for voltage and current output operation.
Undefined Registers The registers from C0 through FE are undefined.
16
16
Channel Voltage The Channel Voltage Offset Calibration Registers store voltage offset
calibration constants in non-volatile memory. There are 16 registers, one
Offset Calibration
for each output channel. The register at base + 100 stores channel 1,
16
Registers
base + 102 stores channel 2, up to base 11E which stores channel 16.
16
16
This register is non-volatile.
Address
Bit
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
msb lsb
Base + 10016
through
Base + 11E16
WRITE
Unused
Voltage Offset Calibration Constant
Voltage Offset Calibration Constant: Writing a 12-bit value to this field
stores a new constant used to calibrate the channel output. Values are in the
range:
00016
80016
FFF16
maximum positive offset
nominal (zero) offset
maximum negative offset
Notes
Registers 00100 through 001BE are located in non-volatile (FLASH)
16 16
memory. Writing to this memory requires a complicated sequence of
register accesses not documented here. It is recommended that calibration
be performed using the SCPI driver for the module, not register access.
Non-volatile memory has finite life, based upon the number of writes. Use
care when writing to this memory.
The contents of this register are loaded into volatile memory at power-on
and not used on an on-going basis.
140 HP E1418A Register-Based Programming
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Channel Voltage The Channel Voltage Gain Calibration Registers store voltage gain
calibration constants in non-volatile memory. There are 16 registers, one
Gain Calibration
for each output channel. The register at base + 120 stores channel 1,
16
Registers
base + 122 stores channel 2, up to base 13E which stores channel 16.
16
16
This register is non-volatile.
Address
Bit
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
msb lsb
Base + 12016
through
Base + 13E16
WRITE
Unused
Voltage Gain Calibration Constant
Voltage Gain Calibration Constant: Writing a 12-bit value to this field
stores a new constant used to calibrate the channel output. The 16-bit value
is a 2’s compliment number. Values are in the range:
00016
80016
FFF16
minimum gain
nominal gain
maximum gain
Notes
Registers 00100 through 001BE are located in non-volatile (FLASH)
16 16
memory. Writing to this memory requires a complicated sequence of
register accesses not documented here. It is recommended that calibration
be performed using the SCPI driver for the module, not register access.
Non-volatile memory has finite life, based upon the number of writes.
Use care when writing to this memory.
The contents of this register are loaded into volatile memory at power-on
and not used on an on-going basis.
Appendix B
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Channel Current The Channel Current Offset Calibration Registers store current offset
calibration constants in non-volatile memory. There are 16 registers, one
Offset Calibration
for each output channel. The register at base + 140 stores channel 1,
16
Registers
base + 142 stores channel 2, up to base 15E to store channel 16.
16
16
This register is non-volatile.
Address
Bit
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
msb lsb
Base + 14016
through
Base + 15E16
WRITE
Unused
Current Offset Calibration Constant
Current Offset Calibration Constant: Writing a 16-bit value to this field
sets a new constant used to calibrate the channel output. Values are in the
range:
00016
80016
FFF16
maximum positive offset
nominal (zero) offset
maximum negative offset
Notes
Registers 00100 through 001BE are located in non-volatile (FLASH)
16 16
memory. Writing to this memory requires a complicated sequence of
register accesses not documented here. It is recommended that calibration
be performed using the SCPI driver for the module, not register access.
Non-volatile memory has finite life, based upon the number of writes.
Use care when writing to this memory.
The contents of this register are loaded into volatile memory at power-on
and not used on an on-going basis.
142 HP E1418A Register-Based Programming
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Channel Current The Channel Current Gain Calibration Registers store current gain
calibration constants in non-volatile memory. There are 16 registers,
Gain Calibration
one for each output channel. The register at base + 160 stores channel 1,
16
Registers
base + 162 stores channel 2, up to base 17E to store channel 16. This
16
16
register is non-volatile.
Address
Bit
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
msb lsb
Base + 16016
through
Base + 17E16
WRITE
Unused
Current Gain Calibration Constant
Current Gain Calibration Constant: Writing a 16-bit value to this field
sets a new constant used to calibrate the channel output. Values are in the
range:
00016
80016
FFF16
minimum gain
nominal gain
maximum gain
Notes
Registers 00100 through 001BE are located in non-volatile (FLASH)
16 16
memory. Writing to this memory requires a complicated sequence of
register accesses not documented here. It is recommended that calibration
be performed using the SCPI driver for the module, not register access.
Non-volatile memory has finite life, based upon the number of writes.
Use care when writing to this memory.
The contents of this register are loaded into volatile memory at power-on
and not used on an on-going basis.
Appendix B
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Calibration The Calibration Resistor Value Registers store the value of the resistor used
to calibrate current output. The Calibration resistor value is a 32-bit value
and requires two 16-bit registers. These registers are non-volatile.
Resistor Value
Registers
Bit
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
2nd Least Significant Byte Least Significant Byte
Address
Base + 18016
READ
WRITE
Bit
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Most Significant Byte 2nd Most Significant Byte
Address
Base + 18216
READ
WRITE
Value: The 32-bit resistor value (in ohms) is written to two adjacent 16-bit
registers. The value is a float 32 format.
Voltage Calibration The Voltage Calibration Status Register provides a non-volatile record of
the voltage calibration status for each channel. This register is non-volatile.
Status Register
Bit
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Address
Base + 18416
READ Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch
16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01
WRITE
Volt Volt Volt Volt Volt Volt Volt Volt Volt Volt Volt Volt Volt Volt Volt Volt
Cal Cal Cal Cal Cal Cal Cal Cal Cal Cal Cal Cal Cal Cal Cal Cal
Stat Stat Stat Stat Stat Stat Stat Stat Stat Stat Stat Stat Stat Stat Stat Stat
Ch XX Cal Stat: This field is set to a one (1) when the channel has been
successfully voltage calibrated. This field is set to a zero (0) when the
channel is not voltage calibrated.
Notes
This register is not set or used by the hardware. The HP E1418A SCPI
driver, if used to calibrate the module, automatically sets the bits in this
register. If you use register programming to calibrate this module, you may
wish to use this register to record the calibration status.
The Voltage Calibration Status Register, the Current Calibration Status
Register, the Calibration Isolation Status Register, and the Calibration Card
Configuration Register are used together to store the overall calibration
status of the module.
144 HP E1418A Register-Based Programming
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Current Calibration The Current Calibration Status Register provides a non-volatile record of
the current calibration status for each channel. This register is non-volatile.
Status Register
Bit
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Address
Base + 18616
READ Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch
16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01
WRITE
Curr Curr Curr Curr Curr Curr Curr Curr Curr Curr Curr Curr Curr Curr Curr Curr
Cal Cal Cal Cal Cal Cal Cal Cal Cal Cal Cal Cal Cal Cal Cal Cal
Stat Stat Stat Stat Stat Stat Stat Stat Stat Stat Stat Stat Stat Stat Stat Stat
Ch XX Curr Cal Stat: This field is set to a one (1) when the channel has
been successfully current calibrated. This field is set to a zero (0) when the
channel is not current calibrated.
Notes
This register is not set or used by the hardware. The HP E1418A SCPI
driver, if used to calibrate the module, automatically sets the bits in this
register. If you use register programming to calibrate this module, you may
wish to use this register to record the calibration status.
The Voltage Calibration Status Register, the Current Calibration Status
Register, the Calibration Isolation Status Register, and the Calibration Card
Configuration Register are used together to store the overall calibration
status of the module.
Appendix B
HP E1418A Register-Based Programming 145
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Calibration The Calibration Isolation Status Register provides a non-volatile record of
the isolation status of each channel at the last calibration. This register is
non-volatile.
Isolation Status
Register
Bit
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Address
Base + 18816
READ Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch
16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01
WRITE
Iso Iso Iso Iso Iso Iso Iso Iso Iso Iso Iso Iso Iso Iso Iso Iso
Cal Cal Cal Cal Cal Cal Cal Cal Cal Cal Cal Cal Cal Cal Cal Cal
Stat Stat Stat Stat Stat Stat Stat Stat Stat Stat Stat Stat Stat Stat Stat Stat
Ch XX Iso Cal Stat: This field is set to a one (1) when the last calibration
of the channel was performed with the channel configured as non-isolated.
This field is set to a zero (0) when the channel was last calibrated in the
isolated configuration.
Notes
This register is not set or used by the hardware. The HP E1418A SCPI
driver, if used to calibrate the module, automatically sets the bits in this
register. If you use register programming to calibrate this module, you may
wish to use this register to record the calibration status.
The Voltage Calibration Status Register, the Current Calibration Status
Register, the Calibration Isolation Status Register, and the Calibration Card
Configuration Register are used together to maintain the overall calibration
status of the module.
Changes in the values of these fields indicate a change in the module
configuration and may indicate the need to recalibrate the module.
146 HP E1418A Register-Based Programming
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Calibration Card The Calibration Card Configuration Register provides a non-volatile record
of the module configuration as either an 8-channel device or a 16-channel
device when the module was last calibrated.
Configuration
Register
Bit
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Undefined Configuration Undefined
Address
Base + 18A16
READ
WRITE
Configuration: When the module was configured as an 8-channel DAC
during the last calibration, all bits in this field are set to one (1). When the
module was configured as a 16-channel DAC at the last calibration, all bits
in this field are set to zero (0).
Notes
This register is not set or used by the hardware. The HP E1418A SCPI
driver, if used to calibrate the module, automatically sets the bits in this
register. If you use register programming to calibrate this module, you may
wish to use this register to record the calibration status.
The Voltage Calibration Status Register, the Current Calibration Status
Register, the Calibration Isolation Status Register, and the Calibration Card
Configuration Register are used together to maintain the overall calibration
status of the module.
Changes in the values of the configuration field indicate a change in the
module configuration and may indicate the need to recalibrate the module.
This register is non-volatile and the field can be compared to the volatile
Configuration Register to determine if the module configuration has changed.
Changes in the terminal module do not affect the contents of this register.
Calibration The Calibration Checksum Register provides a non-volatile record of the
checksum computed from all non-volatile calibration memory locations.
The checksum computed is a 32-bit value but only the least significant
16-bits are available.
Checksum Register
Bit
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Address
Base + 18C16
READ
WRITE
2nd Least Significant Byte
Least Significant Byte
Value: The 16 least significant bits of the Checksum Register.
Appendix B
HP E1418A Register-Based Programming 147
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Module Serial The Module Serial Number Registers provides a 10-byte module serial
number stored in non-volatile memory.
Number Registers
Address
Base + 18E16
Bit
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
2nd Least Significant Byte Least Significant Byte
READ
Address
Base + 19016
Bit
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
4th Least Significant Byte 3 rd Least Significant Byte
READ
Address
Base + 19216
Bit
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
6th Least Significant Byte 5th Least Significant Byte
READ
Address
Base + 19416
Bit
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
8th Least Significant Byte 7th Least Significant Byte
READ
Address
Base + 19616
Bit
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Most Significant Byte 9th Least Significant Byte
READ
Register Example
This example demonstrates using direct register access to set a calibrated
voltage output. The example is in HP BASIC and uses a command module
controlled via HP-IB.
•
•
•
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
Reg_offset(0) = 0
Reg_offset(1) = 2
! ID / Logical Address Register.
! Device Type Register.
! Status/Control Register.
! VXI Offset Register.
! Calibration Control Register.
! Card Configuration Register.
! Software Trigger Register.
! Trigger Control Register.
! Interrupt Control Register.
! Interrupt Status Register.
! Isolation Status Register.
! Program Jumper Register.
! Channel Trigger Register.
! Channel Mode Register.
! Relay Control Register.
Reg_offset(2) = 4
Reg_offset(3) = 6
Reg_offset(4) = 8
Reg_offset(5) = 10
Reg_offset(6) = 12
Reg_offset(7) = 14
Reg_offset(8) = 16
Reg_offset(9) = 18
Reg_offset(10) = 20
Reg_offset(11) = 22
Reg_offset(12) = 24
Reg_offset(13) = 26
Reg_offset(14) = 28
Reg_offset(15) = 30
Reg_offset(16) = 32
Reg_offset(17) = 34
Reg_offset(18) = 36
Reg_offset(19) = 38
! Card Control A24 Window Register.
! A_24 Window Register (Channel 1 DAC and CAL).
! A_24 Window Register (Channel 2 DAC and CAL).
! A_24 Window Register (Channel 3 DAC and CAL).
! A_24 Window Register (Channel 4 DAC and CAL).
148 HP E1418A Register-Based Programming
Appendix B
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699
700
701
702
703
704
705
706
707
708
709
710
Reg_offset(20) = 40
Reg_offset(21) = 42
Reg_offset(22) = 44
Reg_offset(23) = 46
Reg_offset(24) = 48
Reg_offset(25) = 50
Reg_offset(26) = 52
Reg_offset(27) = 54
Reg_offset(28) = 56
Reg_offset(29) = 58
Reg_offset(30) = 60
! A_24 Window Register (Channel 5 DAC and CAL).
! A_24 Window Register (Channel 6 DAC and CAL).
! A_24 Window Register (Channel 7 DAC and CAL).
! A_24 Window Register (Channel 8 DAC and CAL).
! A_24 Window Register (Channel 9 DAC and CAL).
! A_24 Window Register (Channel 10 DAC and CAL).
! A_24 Window Register (Channel 11 DAC and CAL).
! A_24 Window Register (Channel 12 DAC and CAL).
! A_24 Window Register (Channel 13 DAC and CAL).
! A_24 Window Register (Channel 14 DAC and CAL).
! A_24 Window Register (Channel 15 DAC and CAL).
! A_24 Window Register (Channel 16 DAC and CAL).
Reg_offset(31) = 62
•
•
•
999
1000
! Output a calibrated voltage on channel 3.
!
1001 Write_a16(Reg_offset(15),8)
1002 Off_con=FNRead_a16(Reg_offset(18))
1003 Write_a16(Reg_offset(15),4)
1004 Write_a16(Reg_offset(18),Off_con)
1005 Write_a16(Reg_offset(15),9)
! Map A 24 voltage offset cal registers.
! Get the channel 3 voltage offset cal.
! Map A 24 channel offset registers.
! Put in the offset constant.
! Map A 24 voltage gain cal registers.
1006 Gain_con=FNRead_a16(Reg_offset(18)) ! Get the channel 3 voltage gain cal.
1007 Write_a16(Reg_offset(15),5)
1008 Write_a16(Reg_offset(18),Gain_con)
1009 Write_a16(Reg_offset(15),2)
! Map A 24 channel gain registers.
! Put in the gain constant.
! Map A 24 channel Main_DAC registers.
! Program the output value.
1010 Write_a16(Reg_offset(18),Out_val)
1011 Write_a16(Reg_offset(14),0)
! Close all output relays.
•
•
•
2200 Write_a16:SUB Write_a16(INTEGER Register,INTEGER Value).
2201
2202
!
!
2203 Laddr$="09"
2204 OUTPUT 70900;"VXI:WRITE “&Laddr$&”,"&VAL$(Register)&","&VAL$(Value)
2205 SUBEND
•
•
•
3200 Read_a16:DEF FNRead_a16(INTEGER Register)
3201
3202
!
!
3203 Laddr$="09"
3204 OUTPUT 70900;"VXI:READ? “&Laddr$&”,"&VAL$(Register)
3205 ENTER 70900; Reading
3206 RETURN Reading
3207 Read_a16_end:FNEND
•
•
•
Notes
Appendix B
HP E1418A Register-Based Programming 149
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Appendix C
HP E1418A Error Messages
Error Types
Table C-2 lists the error messages generated by the HP E1418A 8/16-Channel
D/A Converter Module firmware when programmed by SCPI. Errors with
negative values are governed by the SCPI standard and are categorized in
Table C-1. Error numbers with positive values are not governed by the SCPI
standard.
Table C-1. Error Types Described
–199 to –100 Command Errors (syntax and parameter errors). See the
HP E1405/E1406 Command Module User’s Manual for a
description of these errors.
–299 to –200 Execution Errors (instrument driver detected errors). See
Table C-2 for these values (also, see the HP E1405/E1406
Command Module User’s Manual for further details).
–399 to –300 Device Specific Errors (instrument driver errors that are not
command or execution errors). See Table C-2 for these
values (also, see the HP E1405/E1406 Command Module
User’s Manual for further details).
–499 to –400 Query Errors (problem in querying an instrument). See the
HP E1405/E1406 Command Module User’s Manual for a
description of these errors.
Appendix C
HP E1418A Error Messages 150
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id
Error Messages
Table C-2. Error Messages
Potential Cause(s)
Code
Error Messages
–141 Invalid character data
–211 Trigger ignored
An invalid SCPI keyword was used.
A trigger was received and no channels were in the wait for
trigger state.
–213 Init ignored
An INITiate was received and one or more channels were
already in the wait for trigger state.
–221 Setting Conflict
A command was received for a mode not set. For example, a
SOURn:VOLT command was received and the channel is set to
CURR mode.
–222 Data out of range
<n> in SCPI keywor s not in the range of 1 to 16.
<value> is out of range.
<mask> is out of range.
<number> is out of range.
–224 Illegal Parameter Value
–240 Hardware Error
Value received is not in the legal range for the parameter.
A hardware failure has been detected. The module may require
replacement or repair.
+2001 Invalid Channel Number
+3000 Trigger too fast
<n> in SCPI keyword is not valid for the module configuration.
For example <n> is set to 11 on an 8-channel configuration.
The trigger was received before the module completed the last
command.
+3002 Self Test Failed
A hardware failure was detected during power up self-test.
Additional self-test information is given in Appendix E,
beginning on page 166.
+3004 Multiple attempts to erase
non-volatile Memory failed
Attempts to erase non-volatile memory using the CAL:STOR
command failed. May indicate a hardware failure or the CAL
Store Enable Jumper is not in the correct position.
+3005 Multiple attempts to program
non-volatile Memory failed
Attempts to write to non-volatile memory using the CAL:STOR
command failed. May indicate a hardware failure or the CAL
Store Enable Jumper is not in the correct position.
+3006 CAL Store Enable Jumper not set A CAL:STOR command was received and the CAL Store
properly
Enable Jumper is not set to the CAL position.
+3007 Checksum error on non-volatile
Memory
Calibration constants in non-volatile memory are corrupted.
Recalibration is needed.
151 HP E1418A Error Messages
Appendix C
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Code
Error Messages
Potential Cause(s)
+3008 Invalid Calibration State
An invalid sequence of calibration commands was received.
For example, a CALn:CONF:VOLT command followed by a
CALn:VAL:CURR command.
+3009 Invalid Calibration Channel
+3010 Calibration aborted
An invalid channel number, n, was requested in the
CALn:CONF or CALn:VAL commands.
A command, other than one of the CALibration commands, was
received during the calibration process.
+3011 Checksum error on Calibration
Memory
Calibration constants in RAM are corrupted. Recalibration is
needed.
+3012 Channel cannot be programmed to An attempt to set the channel output mode when the P/J jumper
this mode, check jumpers
+3013 Waiting for Trigger
is set to Jumper selectable and the mode is set by the V/I
jumper.
An attempt to change a channel output value or mode was
made after the trigger system in the wait-for-trigger state.
+3014 Illegal while initiated
An attempt to program a channel was made when the channel
is in the wait-for-trigger state.
+3015 Non-volatile memory write failed
Indicates a hardware failure in non-volatile memory.
Appendix C
HP E1418A Error Messages 152
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Notes
153 HP E1418A Error Messages
Appendix C
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T
Appendix D
Voltage/Current Output Adjustment
Using This Appendix
This appendix describes adjustment procedures. The procedures in this
appendix are intended for qualified service personnel.
Adjustment procedures are a part of calibration procedures. Calibration
involves functional testing, performance testing, adjustment, and verification
testing. These procedures are given in the HP E1418A 8/16-Channel DAC
Service Manual.
To maintain the output accuracy shown in Appendix A (see page 111),
adjustment should be performed at 90 day intervals. Hewlett-Packard can
perform calibration and adjustment for you. Contact the nearest
Hewlett-Packard Sales and Service Office for additional information.
The HP E1418A Specifications (Appendix A) require that the operation
temperature is within ±5°C of the calibration temperature. The module
temperature is affected by both the ambient temperature and the cooling
performance of the mainframe. Because VXI mainframes have
significantly different cooling capabilities, the most accurate calibration is
achieved when the Output Adjustment is performed with the module in the
same environment and mainframe as it will be operating in.
Adjustment may be performed at more frequent intervals, if required. he
module can be adjusted for use without changing the permanent calibration
settings.
Adjustments are performed electronically. There are no mechanical
adjustments in the module.
Appendix D
Voltage/Current Output Adjustment 154
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Calibration Constants and Non-Volatile Memory
The accuracy of a channel output depends upon a number of calibration
constants. Calibration constants are stored in two locations within the
module; in non-volatile memory and in RAM. The constants in RAM are
used by the module to adjust all outputs.
When the module is used with the SCPI driver, the RAM constants are
loaded from the non-volatile memory at power-up. You can adjust the
RAM calibration constants without disturbing the non-volatile memory
constants (creating a temporary calibration).
Non-volatile memory has a finite number of writes. Writing the calibration
constants to non-volatile memory, therefore, reduces the life of this
memory. If you are calibrating the module at 90 day or 1 year intervals,
write the new constants into non-volatile memory. The new constants will
be used following power-up. If you are calibrating the module more
frequently (daily, for example), write the new calibration constants into
RAM, but do not write to non-volatile memory.
The adjustment procedures shown in this appendix demonstrate both
methods of writing calibration constants.
Equipment Required
The following equipment is recommended for calibration and adjustment.
Key specifications are listed to allow for equipment substitutions.
Model
Requirements
Digital Multimeter (DMM)
Voltage measurements to ±16.8 V
Four-wire Resistance measurements
from 50 Ω to 500 Ω
1
1
5 ⁄2 or 6 ⁄2 digit
Making Connections
All adjustment can be performed using the CAL output terminals. The
CAL output terminals provide one set of connections for both voltage and
current adjustment.
Optionally, you can also perform the adjustment at each channel output (to
include the output relay contacts in the path). Before beginning adjustment
procedures, you must send the DIAGnostic:CALibration:OUTPut CHANnel
command to set the adjustment point at the channels instead of the CAL
output terminals. Adjustment at each channel output will require individual
connections. You must make a four-wire connections for the adjustment
procedures.
155 Voltage/Current Output Adjustment
Appendix D
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Adjustment Procedure
Adjustment is performed on each channel, one at a time. Additionally,
voltage output and current output each use unique calibration constants. If
desired, you may adjust only voltage output or current output.
Preparation Before performing any adjustments, determine if the adjustments are to be
temporary or permanent (refer to the discussion on page 155).
If Permanent
1. Turn off the mainframe.
2. Remove the terminal module (see page 26).
3. Remove the module from the mainframe (see page 21).
4. Set the Cal Store Enable Jumper to the CAL position as shown in
Figure D-1.
5. Reinstall the module in the mainframe.
6. Make the CAL output terminal connections on the terminal module.
7. Install the terminal module.
8. Apply power and allow a 15 minute warm-up.
Figure D-1. CAL Store Enable Jumper
1. Make the CAL output terminal connections on the terminal module.
2. Install the terminal module.
If Temporary
3. Apply power and allow a 15 minute warm-up.
Appendix D
Voltage/Current Output Adjustment 156
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Voltage Adjustment Voltage output adjustment uses two of the CALibration subsystem queries.
CALibrationn:CONFigure:VOLTage?
CALibrationn:VALue:VOLTage?
The general procedure for channel voltage adjustment is:
1. Make the connections shown in Figure D-2 or D-3.
2. Send the CALibrationn:CONFigure:VOLTage? query to the module
and read the response until a 1 is returned (typically the first query
response).
3. Read the voltage output on the DMM.
4. Send the DMM value read with the CALibrationn:VALue:VOLTage?
query.
5. Enter the query response.
6. Repeat steps 3, 4, and 5 until the CALibrationn:VALue:VOLTage?
query returns a 0.
7. Repeat steps 1 through 6 for each channel.
The first query, CALibrationn:CONFigure:VOLTage?, sets the channel to the
calibration mode and returns a 1 when the channel is ready for calibration.
When a 1 is returned, the channel output voltage is set to the first
adjustment point.
Read the output voltage on the DMM and return the value obtained using
the CALibrationn:VALue:VOLTage? query. This query returns an integer
indicating the calibration state of the channel. Any non-zero return from
this query indicates additional values are needed.
Each channel will require multiple iterations of the
CALibrationn:VALue:VOLTage? query. A minimum of 9 queries, to a
maximum of 50 queries, will be required at each channel. During the
process, the output voltage will range from +16 V to -16 V and the last
values output will be at or near 0 volts.
157 Voltage/Current Output Adjustment
Appendix D
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Figure D-2. Voltage Calibration Connections (CAL)
Figure D-3. Voltage Calibration Connections (CHAN)
Appendix D
Voltage/Current Output Adjustment 158
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Current Adjustment Current output uses an internal resistance value to calibrate all channels.
This resistance value is approximately 244 Ω.
Note
You may also use an external resistance value on each channel for current
output calibration. If you wish to specify an external resistor value, you
must send the DIAGnostic:CALibration:OUTPut CHANnel command and
perform the adjustment at each channel output. Any resistor value may be
used but values in the range of 50 Ω to 500 Ω are recommended.
To set the internal resistance value use the following CALibration
commands:
CALibration:CONFigure:RESistance?
CALibration:VALue:RESistance
The resistance value set, either internal or external, is not stored.
When using the internal resistor value, the general procedure is:
1. Make the connections shown in Figure D-4.
2. Send the CALibration:CONFigure:RESistance? query to the module
and read the response until a 1 is returned (typically the first query
response).
3. Read the resistance on the DMM.
4. Send the DMM value read to the module using the
CALibration:VALue:RESistance command.
The resistor value is only set once for current calibration of all channels.
If you are using an external resistor value, for each channel:
1. Send the CALibration:CONFigure:RESistance? query to the module
and read the response until a 1 is returned (typically the first query
response).
2. Measure the channel’s external resistor value on the DMM.
3. Send the DMM value read to the module using the
CALibration:VALue:RESistance command.
159 Voltage/Current Output Adjustment
Appendix D
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Figure D-4. Resistance Calibration Connections (CAL)
Current output adjustment uses two of the CALibration subsystem queries.
Current adjustment requires voltage measurements.
CALibrationn:CONFigure:CURRent?
CALibrationn:VALue:CURRent? <value>
Once the calibration resistance value is set as described earlier, the general
procedure for each channel current output adjustment is:
1. Make the connections shown in Figure D-5 or D-6.
2. Send the CALn:CONF:CURR? query to the module and read the
response until a 1 is returned (typically the first query response).
3. Read the voltage output on the DMM.
4. Send the DMM value read with the CALn:VAL:CURR? <value>
query.
5. Enter the query response.
6. Repeat steps 3, 4, and 5 until the CALn:VAL:CURR? <value> query
returns a 0.
7. Repeat steps 1 through 6 for each channel.
The first query, CALn:CONF:CURR?, sets the channel to the calibration
mode and returns a 1 when the channel is ready for calibration. When a 1 is
returned, the channel output voltage is set to the first adjustment point.
Read the output voltage on the DMM and return the value obtained using
the CALn:VAL:CURR? <value> query. This query returns an integer
indicating the calibration state of the channel. A value other than 0 or 2
from this query indicates additional values are needed.
Appendix D
Voltage/Current Output Adjustment 160
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Each channel will require multiple iterations of the CALn:VAL:CURR?
<value> query. A minimum of 9 queries, to a maximum of 50 queries, will
be required at each channel. During the process, the output voltage will
range from -5 to +5 V and the last values output will be at or near 0 volts.
Figure D-5. Current Calibration Connections (CAL)
Figure D-6. Current Calibration Connections (CHAN)
161 Voltage/Current Output Adjustment
Appendix D
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Storing the Once all adjustments have been made using the procedures outlined
previously, you can store the new calibration constants in non-volatile
memory by sending the following command:
Adjustments
/* Store the new constants */
CALibration:STORe
This command will generate an error if the Cal Store Enable Jumper is not
set to the CAL position (see page 156).
Note
The HP E1418A will be busy storing the new calibration constants following
the CAL:STORe command. You should not perform any bus resets or module
resets until the store is complete. You can use the *OPC? query as described
on page 56, if needed.
Return the If you have changed the position of the Cal Store Enable Jumper (as
described on page 156) and you wish to prevent writing calibration
constants to non-volatile memory, set the jumper to the SECURE position.
Module to Use
Example Program The following program, written in ANSI C illustrates a full calibration of all
channels for both voltage and resistance. The internal calibration resistor is
used. The SCPI drivers disk contains a calibration example file. This
example uses function calls to the HP VISA Transition Library for I/O
operations. Page 39 provides more details about this library.
•
•
•
/** FUNCTION PROTOTYPES **/
void main (void);
void err_handler(ViSession vi, ViStatus x); /* VTL error routine */
void sys_err(ViSession resource);
void pause();
int config_check ();
/* Checks for SCPI programming errors */
/* Waits for a keystroke to continue program execution */
/* Checks and reports the module configuration */
/* returns the number of channels in module */
/* Obtains the measured voltage */
float get_voltage ();
float get_resistance ();
/* Obtains the measured resistance */
•
•
•
void main (void)
{
char cal_point [5],int_ext [4];
int num_chan,result,compare,i,condition [4];
float meas_volt,meas_res;
•
Appendix D
Voltage/Current Output Adjustment 162
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•
•
/***
VOLTAGE OUTPUT ADJUSTMENT
***/
for (i=1;i<num_chan+1;i++)
{
result = 0;
while (result < 1)
{
err=viPrintf(dac, “CAL%d:CONF:VOLT?\n”,i); /* Configure for calibration */
if(err < VI_SUCCESS) err_handler(dac, err);
err=viScanf(dac, “%d”, &result);
/* Enter integer returned */
/* returns a 1 when ready to calibrate */
if(err < VI_SUCCESS) err_handler(dac, err);
}
result = 1;
while (result !=0)
{
meas_volt=get_voltage ();
/* Get the voltage measurement */
err=viPrintf(dac, “CAL%d:VAL:VOLT? %f\n”,i,meas_volt); /* Send the measurement*/
if(err < VI_SUCCESS) err_handler(dac, err);
err=viScanf(dac, “%d”, &result);
/* Enter integer returned */
/* returns a 0 when calibration complete */
if(err < VI_SUCCESS) err_handler(dac, err);
if (result == 5)
{
/* Calibration for this channel aborted */
printf (“Calibration for channel %d aborted\n”,i);
result = 0;
}
}
}
/***
CURRENT OUTPUT ADJUSTMENT
***/
/*** set the calibration resistor value
***/
result = 0;
while (result < 1)
{
err=viPrintf(dac, “CAL:CONF:RES?\n”);
if(err < VI_SUCCESS) err_handler(dac, err);
err=viScanf(dac, “%d”, &result);
/* Configure for resistance calibration */
/* Enter integer returned */
/* returns a 1 when ready to calibrate */
if(err < VI_SUCCESS) err_handler(dac, err);
}
meas_res = get_resistance();
err=viPrintf(dac, “CAL:VAL:RES %f\n”,meas_res); /* Send the resistance value */
if(err < VI_SUCCESS) err_handler(dac, err);
/*** channel current output adjustment ***/
for (i=1;i<num_chan+1;i++)
{
result = 0;
while (result < 1)
{
err=viPrintf(dac, “CAL%d:CONF:CURR? \n”,i); /* Configure for calibration */
if(err < VI_SUCCESS) err_handler(dac, err);
163 Voltage/Current Output Adjustment
Appendix D
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err=viScanf(dac, “%d”, &result);
/* Enter integer returned */
/*, returns a 1 when ready to calibrate */
if(err < VI_SUCCESS) err_handler(dac, err);
}
result = 1;
while (result !=0 && result !=2)
{
meas_volt=get_voltage ();
/* Get the voltage measurement */
err=viPrintf(dac, “CAL%d:VAL:CURR? %f\n”,i,meas_volt);
if(err < VI_SUCCESS) err_handler(dac, err);
err=viScanf(dac, “%d”, &result);
/* Enter integer returned */
/* returns a 0 when calibration complete */
if(err < VI_SUCCESS) err_handler(dac, err);
if (result == 5)
{
/* Calibration aborted */
printf (“Calibration for channel %d aborted\n\n”,i);
result = 0;
}
}
}
/*** STORE THE NEW CALIBRATION CONSTANTS
***/
err=viPrintf(dac, “CAL:STOR;*OPC?\n”);
if(err < VI_SUCCESS) err_handler(dac, err);
err=(viScanf(dac,"%d",&result);
/* Store the new cal constants */
if(err < VI_SUCCESS) err_handler(dac, err);
sys_err(dac);
•
•
•
}
Appendix D
Voltage/Current Output Adjustment 164
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Notes
165 Voltage/Current Output Adjustment
Appendix D
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Appendix E
Configuration and Disassembly
Using This Appendix
This appendix contains information about the mechanical and electrical
layout of the module. Use this appendix to:
– Disassemble and reconfigure the module
– Perform assembly level troubleshooting
CAUTION
Procedures in this appendix should be performed by qualified service
personnel at approved static safe workstations.
Configuration
The HP E1418A can be configured as either an 8-channel output device or a
16-channel output device. Each output channel can be configured as either
an isolated output or a non-isolated output. The following sub-sections
describe how to check or change this configuration.
Checking Use the following SCPI command to check the configuration of a module.
You can also use this command to verify changes you make to the
configuration. Additional programming information is given Chapter 2 and
Chapter 3. An example of checking the configuration is shown on page 40.
Configuration
! Check the configuration by sending this query.
DIAG:CONF?
! Enter the returned values, the query returns six integers.
The query above returns six 16-bit integers. The first and third integer
contain configuration information. The second, fourth, fifth, and sixth
integers contain information about the terminal module, jumper settings,
and output relays. The configuration information is shown on the next page.
Appendix E
Configuration and Disassembly 166
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1st Value Returned Indicates an 8-channel or 16-channel configuration.
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Use
Not Used
Channels
Channels can have one of two values; all 1’s (decimal 7) for an 8-channel
configuration, and all 0’s (decimal 0) for a 16-channel configuration.
2nd Value Returned Indicates the type of Terminal Module (if any) installed. See page 77 for
additional information.
3rd Value Returned Indicates isolated or non-isolated plug-on modules for each channel.
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Use Ch16 Ch15 Ch14 Ch13 Ch12 Ch11 Ch10 Ch9 Ch8 Ch7 Ch6 Ch5 Ch4 Ch3 Ch2 Ch1
When a bit is set to a 0 an isolated plug-on is present. A bit set to a 1
indicates a non-isolated plug-on. For 8-channel devices, channels 9 through
16 bits are set to 1.
4th Value Returned Indicates the state of the V/I jumper on the terminal module as either
current or voltage when the P/J jumper is in the jumper selectable position.
See page 77 for additional information.
5th Value Returned Indicates the state of the channel output relay. See page 77 for additional
information.
6th Value Returned Indicates the state of the P/J jumper on the terminal module. See page 77
for additional information.
Changing Configuration changes are made using Hewlett-Packard add-on kits. These
procedures support the following add-on kits:
Configuration
Kit Part Number
Description
Use
HP E1523A
1-Channel Isolation
Plug-On Module
Change one or more channels
from Non-Isolated to Isolated
Output.
HP E1524A
HP E1525A
8-Channel
Non-Isolated
Expansion Kit
Add 8 Channels of Non-Isolated
Output.
8-Channel Isolated
Expansion Kit
Add 8 Channels of Isolated
Output.
167 Configuration and Disassembly
Appendix E
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Adding 8 Channels Use this procedure to install an 8-Channel expansion kit (HP E1524A or
HP E1525A).
CAUTION
Almost all electrical components can be damaged by electrostatic discharge
(ESD) during handling. Component damage can occur at electrostatic
discharge voltages as low as 50 volts. Disassemble and reconfigure only in a
static free work area. Minimize handling of assemblies and components. Keep
all assemblies and replacement parts in the original static free packaging.
These procedures should be performed by qualified service personnel at
approved static safe workstations.
Tools Needed
– T10 Torx Driver (one is provided in the kit).
– Static Safe Workstation.
– Static Wrist Strap.
Procedure Refer to Figures E-1 and E-2 during these procedures.
1. Remove the top cover. Refer to Figure E-1.
2. Remove the screw holding the sheet metal spacer and save the screw.
Remove and discard the sheet-metal spacer.
3. Place expansion board over the main board, component sides facing
each other. Line up the three electrical connectors and carefully
press into place. Install the hold down screw through the expansion
board and secure with a T10 Torx Driver. Refer to Figure E-2.
4. Replace the top cover.
5. Perform the adjustment procedures on the module. See Appendix D,
beginning on page 154.
Appendix E
Configuration and Disassembly 168
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Figure E-1. 8-Channel Disassembly
169 Configuration and Disassembly
Appendix E
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Figure E-2. 16-Channel Disassembly
Appendix E
Configuration and Disassembly 170
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Installing Use this procedure to install the isolated plug-on kit (HP E1523A) or to
change the channel isolation configuration.
Isolated/Non-Isolated
Plug-on Modules
CAUTION
Almost all electrical components can be damaged by electrostatic discharge
(ESD) during handling. Component damage can occur at electrostatic
discharge voltages as low as 50 volts. Disassemble and reconfigure only in a
static free work area. Minimize handling of assemblies and components. Keep
all assemblies and replacement parts in the original static free packaging.
These procedures should be performed by qualified service personnel at
approved static safe workstations.
Tools Needed
– T10 Torx Driver (one is provided with the kit)
– Static Safe Workstation
– Static Wrist Strap
Procedure Refer to Figures E-1 and E-2 during these procedures
1. Remove the top cover.
2. Remove the screw holding the sheet-metal spacer (Figure E-1) or
expansion board (Figure E-2). Remove the spacer or expansion
board.
3. Refer to Figure E-3 for the locations of the isolated/non-isolated
plug-on modules. Each channel must have a plug-on module.
Remove the screw securing the plug-on module(s).
4. Use Figure E-4 to identify isolated or non-isolated plug-on modules.
Install the new plug-on module as shown in Figure E-4. Note the
locator pin on the main board or expansion board that ensures correct
orientation. Replace the screw in the plug-on module.
5. Repeat steps 3 and 4 for each channel.
6. Reinstall the sheet metal spacer or expansion board (a complete
procedure for the expansion board is given earlier in this chapter).
7. Replace the top cover.
8. Perform the adjustment procedures on the module. See Appendix D,
beginning on page 154.
171 Configuration and Disassembly
Appendix E
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Figure E-3. Plug-on Channel Locations
Figure E-4. Installing Plug-on Modules
Appendix E
Configuration and Disassembly 172
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Troubleshooting
These procedures will help you isolate a failure to a particular assembly.
The major assemblies of the HP E1418A are available on an exchange basis.
Isolating an Use the following SCPI Common Command query to initiate a module
self-test.
Assembly
(Self-Test)
! Start the Self-test.
*TST?
! Enter the 16-bit integer returned.
The query will return a +0 if no errors are encountered. The return value
looks like:
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Use
Test Number
Test Information
The Test Information bits are not described in this manual. The test number
is the number of the first test to fail. This number can be used to isolate a
failing assembly. The possible test numbers and probable failing assembly
are shown below.
Test Number Failing Assembly Indicated
Notes
0
None
All Self-tests passed
1
Main Board
2 through 9
Main Board or Plug-On
Modules
Test 2 = channel 1,
Test 3 = channel 2, etc.
10 through 17 Expansion Board or Plug-on
Modules
Test 10 = channel 9,
Test 11 = channel 10, etc.
18 through 25
26 through 33
34 through 41
42 through 43
44 through 51
52 through 59
60 through 67
68 through 75
Main Board
Main board
Expansion Board
Main Board
Main Board
Expansion Board
Main Board
Expansion Board
Note
Since the query returns only the first failure test number, additional failures
are possible but not reported by this command.
173 Configuration and Disassembly
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Assembly Exchange The following assemblies are available for exchange.
Part Number
Assembly
E1418-69201
Main board and all sheet metal. Does NOT include
plug-on assemblies or expansion board.
E1418-69502 Expansion board. Does NOT include plug-on assemblies.
E1418-66503 Isolated plug-on module (replacement, not an exchange).
Notes
When exchanging either the main board or expansion board, you must
disassemble the module and remove all plug-on assemblies before sending
the exchange part. Keep all parts removed in a safe place.
If you are exchanging a main board from a module configured as a 16-channel
device, you must remove the expansion board before sending the exchange part.
CAUTION
Almost all electrical components can be damaged by electrostatic discharge
(ESD) during handling. Component damage can occur at electrostatic
discharge voltages as low as 50 volts. Disassemble and reconfigure only in a
static free work area. Minimize handling of assemblies and components. Keep
all assemblies and replacement parts in the original static free packaging.
These procedures should be performed by qualified service personnel at
approved static safe workstations.
To Exchange an
Assembly
1. Contact the nearest Hewlett-Packard Sales and Service Office for
instructions on packaging and shipping.
2. Disassemble the module, using the procedures given earlier in this
appendix, until just the exchange part is obtained. Remove the
plug-on modules and expansion board, if any.
3. Keep all removed parts in a static-safe place. Do not send plug-on
modules with the exchange assembly.
4. Package the assembly in static-safe packaging material.
5. Include a description of the problem encountered as well as your
phone number and return address.
Appendix E
Configuration and Disassembly 174
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Notes
175 Configuration and Disassembly
Appendix E
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Index
HP E1418A User’s Manual
*CLS, 96–100, 106
*DMC, 106
*EMC, 106
*EMC?, 106
*ESE, 106
*ESE?, 106
logical, 19, 114
registers, 114–118
space defined, 114, 117
space inside command module, 117
space outside command module, 117
window addressing, 116
Adjustments, 154–165
*ESR?, 106
*GMC?, 106
*IDN?, 40, 106
*LMC?, 106
*OPC, 106
*OPC?, 56, 106, 162
*PMC, 106
current output, 159–161
equipment required, 155
procedure, 156
voltage output, 157–158
ANSI C, 39
APPLy Subsystem, 45–46, 64–65
APPLyn:CURRent, 45–46, 53, 64
APPLyn:VOLTage, 45–46, 53, 65
Assembly Exchange, 174
Attaching
*RMC, 106
*RST, 53, 106, 119
*SRE, 98, 106
*SRE?, 106
*STB?, 106
terminal module, 25
*TRG, 106
*TST?, 53, 103, 106, 173
*WAI, 106
B
Backplane
circuitry, 17
A
trigger, 54, 81–82, 132
Base Address, 117
Bits
clearing from register, 97, 99
questionable data bit, 98
Block Diagram, 16
Boolean Command Parameters, 61
A16
address space, 117
registers, 114
A16/A24
register map, 120
windows, 116
A24
access from A16, 137
memory access state, 127
memory required, 127
register map, 121–125
registers, 115
C
CAL
current calibration connections, 161
output terminals, 36, 71–72, 76, 155
resistance calibration connections, 160
store enable jumper, 20, 156
terminal connections, 36, 155
voltage calibration connections, 158
Calibration
windows, 116, 137
Abbreviated SCPI Commands, 60
ABORt Subsystem, 63
Accuracy, 111–112
Adding 8 Channels, 168–170
Address
card configuration register, 147
checksum register, 147
conditions, reporting, 129
constants, 155
A16 address space, 114
A24 address space, 115
base address, 117
dynamic configuration, 19
constants, loading stored, 69, 162
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current output mode, 13, 45, 89, 136
gain value, 139
isolated output, 14–15
constants, reloading, 68
control register, 119, 129
current mode, 71
isolated plug-on module, 15, 17
mode change, 46
mode register, 119, 136
non-isolated output, 14–15
non-isolated plug-on module, 17
output lines, 33
current process, 73–74
equipment required, 155
example program, 162–164
interruption, 74–75
isolation status register, 146
memory, 155
output mode, changing, 46, 51, 78
output mode, configuring, 89
output mode, querying, 90
resistor value registers, 144
resistor, internal, 68, 70, 144, 159
test condition, 69
output mode, setting, 45
voltage mode, 72
output relay, 53, 78, 82–83
output, setting, 50
program jumper register, 119, 134
relay control register, 119, 136
trigger register, 119, 135
voltage path, querying, 77
voltage path, setting, 76
voltage process, 74–75
CALibration Subsystem, 66–75
CAL:CONDition?, 67
trigger status report, 135
triggering, 104
CAL:CONFigure:RESistance?, 68, 159
CAL:RESet, 68
voltage gain calibration registers, 141
voltage mode calibration, 72, 74–75
voltage offset calibration registers, 140
voltage output connections, 33
voltage output connections, combining, 34
voltage output connections, querying, 92, 94
voltage output connections, specifying, 65, 91, 93
voltage output mode, 13, 45, 89, 136
CAL:STORe, 69, 162
CAL:TEST?, 69
CAL:VALue:RESistance, 70, 159
CALn:CONFigure:CURRent?, 71, 160
CALn:CONFigure:VOLTage?, 72, 157
CALn:VALue:CURRent?, 73–74, 160–161
CALn:VALue:VOLTage?, 74–75, 157
Card
Channels
configuration register, 130
control register, 137
adding 8, 168–170
calibration condition, 69
See also Channel
Certification, 7
CHAN
combining, 34, 57
current calibration connections, 161
voltage calibration connections, 158
Changing
isolation status, 146
parallel connections, 34
series connections, 34
channel output modes, 46
configuration, 167
Checking
configuration, 166
errors, 47
output mode, 51, 78
output value, 51
SCPI errors, 47–49
trigger state, 80
Closing
Channel
output relay, 45, 53, 78, 82
*CLS, 96–100, 106
Combining Channels, 34, 57
Command Module
calibration path, querying, 77
calibration path, setting, 76
calibration process, 73–75
calibration readiness, 71–72
See also Channels
A16 address space, 114
A16 address space inside, 117
A16 address space outside, 117
Command Reference, 59–110
ABORt subsystem, 63
current gain calibration registers, 143
current mode calibration, 71, 73–74
current offset calibration registers, 142
current output connections, 33
current output connections, combining, 34
current output connections, querying, 86, 88
current output connections, specifying, 64, 85, 87
APPLy subsystem, 64–65
CALibration subsystem, 66–75
*CLS, 96–100, 106
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quick reference, SCPI commands, 107–110
*RMC, 106
DIAGnostic subsystem, 76–79
*DMC, 106
*RST, 53, 106, 119
SCPI format, 60–61
SOURce subsystem, 50–52, 84–94
*SRE, 98, 106
*EMC, 106
*EMC?, 106
*ESE, 106
*ESE?, 106
*SRE?, 106
*ESR?, 106
STATus subsystem, 95–99
*STB?, 106
*GMC?, 106
*IDN?, 40, 106
SYSTem subsystem, 100
TEST subsystem, 101–103
*TRG, 106
INITiate subsystem, 80
*LMC?, 106
*OPC, 106
TRIGger subsystem, 104–105
*TST?, 53, 103, 106, 173
types, 59
*OPC?, 56, 106, 162
OUTPut subsystem, 81–83
*PMC, 106
*WAI, 106
*RMC, 106
Comment Sheet, reader, 11
Common (*) Commands, 106
*CLS, 96–100, 106
*DMC, 106
*RST, 53, 106, 119
SOURce subsystem, 84–94
*SRE, 98, 106
*SRE?, 106
*EMC, 106
*EMC?, 106
STATus subsystem, 95–99
*STB?, 106
*ESE, 106
*ESE?, 106
*ESR?, 106
SYSTem subsystem, 100
TEST subsystem, 101–103
*TRG, 106
format, 59
*GMC?, 106
*IDN?, 40, 106
TRIGger subsystem, 104–105
*TST?, 53, 103, 106, 173
*WAI, 106
linking, 62
Commands
*LMC?, 106
ABORt, 63
*OPC, 106
*OPC?, 56, 106, 162
*PMC, 106
quick reference, 106
*RMC, 106
*RST, 53, 106, 119
*SRE, 98, 106
APPLy subsystem, 45–46, 64–65
CALibration subsystem, 66–75
*CLS, 96–100, 106
Common (*) Commands, 106
common format, 59
DIAGnostic subsystem, 76–79
*DMC, 106
*SRE?, 106
*EMC, 106
*STB?, 106
*EMC?, 106
*TRG, 106
*ESE, 106
*TST?, 53, 103, 106, 173
*WAI, 106
*ESE?, 106
*ESR?, 106
Condition Register, 95–96, 98
Configuration
*GMC?, 106
*IDN?, 40, 106
and disassembly, 166–175
changing, 167
INITiate subsystem, 80
linking, 62
checking, 40–44, 166
device ID, 40–44
dynamic addressing, 19, 126
mechanical, 166
*LMC?, 106
*OPC, 106
*OPC?, 56, 106, 162
OUTPut subsystem, 46, 81–83
*PMC, 106
quick reference, 106–110
quick reference, IEEE common commands, 106
terminal module, 31
Conformity, declaration, 9
Connections
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CAL terminals, 36, 155
current calibration (CAL), 161
current calibration (CHAN), 161
current output, 33
current output, combining, 34
external trigger, 35
resistance calibration (CAL), 160
sense leads, 33
terminal module, 33
ID register, 119
type register, 127
DIAGnostic Subsystem, 76–79
DIAG:CAL:OUTPut[:MODE], 76, 155, 159
DIAG:CAL:OUTPut[:MODE]?, 77
DIAG:CONFigure?, 40–41, 77
DIAG:OUTP:ALL[:STATe], 53, 78
DIAG:SOURn:FUNC:MODE, 78
DIAG:TRIGgered?, 79
voltage calibration (CAL), 158
voltage calibration (CHAN), 158
voltage output, 33
Disabling
outputs, 46
outputs, simultaneously, 78
trigger system, 63
voltage output, combining, 34
Connectors
Disassembly, 168
crimp-and-insert, 27, 29
front panel, 18
Discrete Command Parameters, 61
*DMC, 106
front panel pinout, 18
terminal module, 30
terminal module pinout, 30
Controlling Output Relay, 53
Cooling Requirements, 112
Crimp-and-Insert
Documentation History, 8
Driver, SCPI, 13, 37, 47, 100
Dynamic Addressing, 19, 126
E
accessories, 28
contacts, 28
option A3E, 27–28
option A3E, accessories, 28
tools, 28
E1523A, 15, 167, 171
E1524A, 15, 167–168
E1525A, 15, 167–168
*EMC, 106
*EMC?, 106
Current
Enable Register, 99
presetting to zero, 97
Enabling
outputs, 45–46
outputs, simultaneously, 78
Error
adjustment, 159–161
calibration connections (CAL), 161
calibration connections (CHAN), 161
calibration status register, 145
channel output connections, 33
channel output connections, combining, 34
channel output connections, querying, 86, 88
channel output connections, specifying, 64, 85, 87
channel output mode, 13, 45, 89
DC specifications, 111
gain calibration constant, 143
mode calibration, 71, 73–74
offset calibration constant, 142
output adjustment
buffer, 100
checking, 47
I/O routine, 47
messages, 100, 150–153
numbers, 100, 150–153
queue, 47
queue, clearing, 100
routines, 47
SCPI driver, 47–49
types, 150
*ESE, 106
*ESE?, 106
D
DC Current Specifications, 111
DC Voltage Specifications, 111
Declaration of Conformity, 9
Description, 13
functional, 16
registers, 126–148
Device
*ESR?, 106
Event Register, 95–99
Example Program
See Programming Examples
Exchange Assemblies, 174
Expansion Board, 17, 168
External Trigger, 35, 54
driver, 37
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status of each channel, 146
status register, 119, 133
F
Field Kits, 15, 167
J
Four-wire Connections, 33
Front Panel Connectors, 18
Functional Description, 16
Jumper
CAL store enable, 20, 156
channel program jumper register, 119, 134
output mode, 31
P/J, 17, 31, 52, 119, 134
program selectable, 31
V/I, 17, 31, 52
G
Gain_DAC Registers, 139
*GMC?, 106
H
L
HI Channel Output Line, 33
HP-IB, 39
LADDR, 19
*LMC?, 106
HS Channel Output Line, 33
LO Channel Output Line, 33
Logical Address, 19, 114
Logical Address, register, 126
LS Channel Output Line, 33
I
I/O Error Check, 47
*IDN?, 40, 106
IEEE-488.2 Common Commands
See Common (*) Commands
Immediate
M
Main_DAC
immediate registers, 138
triggered registers, 138
Mainframe
A16 address space inside, 117
installing modules, 20
removing modules from, 21
Manufacturer ID Register, 119, 126
Maximum Module Isolation Rating, 34, 57, 112
Memory
trigger, 54
Implied SCPI Commands, 61
Initial Operation, 37
INITiate Subsystem
INITiate[:IMMediate], 54, 80
Installation
isolation plug-on modules, 171–172
of module, 20
verification, 37
map, A16, 114
int Data Type, 39
map, A24, 115
Internal
non-volatile (FLASH), 20, 68–69, 140–143, 155, 162
purge macros from, 106
required, 127
calibration resistor, 68, 70, 144, 159
self-test, 101, 103
Interrupt
MODID* Line, 127
calibration, 74
Module
SRQ, 98
channel isolated plug-on, 15, 17
channel non-isolated plug-on, 17
configuration and disassembly, 166–175
configuration query, 40–44
description, 13
description, functional, 16
disassembly, 169–170
expansion kits available, 15
field kits, 15
status register, 133
voltage calibration, 75
Isolated
channel output, 14–15
channel plug-on module, 15, 17
output, 34
plug-on modules, 171–172
Isolation
for isolated channels, 112
rating, maximum, 34, 57, 112
identification, 38
identification query, 40–44
installation, 20
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installing in mainframe, 20
isolation rating, maximum, 34, 57, 112
options available, 15
programming examples, 39–58
query current settings, 77
query current status, 79
register-based programming, 113–149
removing from mainframe, 21
serial number, 38, 40
serial number registers, 148
setup and installation, 13–38
specifications, 111–112
Output
accuracy, 111–112
CAL terminals, 36, 71–72, 76, 155
changing value, 51
channel current, 13, 45, 89
channel current connections, 33
channel current connections, combining, 34
channel current connections, querying, 86, 88
channel current connections, specifying, 64, 85, 87
channel isolated, 14–15
channel non-isolated, 14–15
channel voltage, 13, 45, 89
channel voltage connections, 33
channel voltage connections, combining, 34, 57
channel voltage connections, querying, 92, 94
channel voltage connections, specifying, 65, 91, 93
current adjustment, 154–165
current connections, 33
synchronizing with program, 56
terminal, 17, 22
terminal module wiring, 23–24
N
current connections, combining, 34
disabling, 46
Non-Isolated
channel output, 14–15
enabling, 46
channel plug-on module, 17
isolated, 34
mode, changing, 46, 51, 78
mode, configuring, 89
Non-Volatile (FLASH) Memory, 140–143
calibration constants, 68–69, 141–143, 155, 162
storing calibration results, 20
mode, jumper, 31
Non-Volatile Memory, 155
mode, reporting, 136
Numeric Command Parameters, 61
mode, setting, 52
relay, 45–46, 51, 53
relay, closing, 53, 78, 82
O
relay, controlling, 53
relay, opening, 51, 78, 82
relay, query state, 83
Offset_DAC Registers, 139
*OPC, 106
*OPC?, 56, 106, 162
Opening
relay, resetting, 53
synchronizing, 54
synchronizing, multiple channel, 87, 93
triggering, 54, 104
output relay, 51, 78, 82
Operation Register
query contents, 96–97, 99
Operation Status
value, setting, 45
voltage adjustment, 154–165
voltage connections, 33
condition register, 96
event register, 96–97, 99
register, 95, 97
voltage connections, combining, 34
OUTPut Subsystem, 46, 81–83
OUTPut:TTLTrgn[:STATe], 81
OUTPut:TTLTrgn[:STATe]?, 82
OUTPutn[:STATe], 46, 53, 82
OUTPutn[:STATe]?, 83
Option 135, 29
Option A3E, 27–28
Option A3H, 29
Optional Command Parameters, 61
Options
option 001, 15
option 002, 15
option 003, 15
P
option 135, 15, 29
option A3E, 15, 27–28
option A3H, 15, 29
ordering, 15
P/J Jumper, 17, 31, 52, 119, 134
option A3E, 32
option A3H, 32
Parallel Connections, 34
Parameters
terminal module, 15
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boolean, 61
defined, 61
device identification, 40–44
error queue, 47
discrete, 61
numeric, 61
optional, 61
event register contents, 97, 99
operation status register, 97
output relay state, 83
SCPI Commands, 61
Pinout
questionable status register, 99
self-test results, 102
front panel connectors, 18
trigger source, 105
terminal module connectors, 30
Plug-On Module
TTLTRG line state, 82
voltage calibration path, 77
voltage calibration process, 74–75
Questionable Data Bit, 98
Questionable Status
channel locations, 172
configuration report, 133
installing, 171–172
isolated, 15, 17
condition register, 98
non-isolated, 17
event register, 98
*PMC, 106
register, 95, 99
Power Requirements, 112
Preset Enable Registers, 97
Problem Isolation, 173
Quick Reference
common (*) commands, 106
SCPI commands, 107–110
Program
channels gain value, 139
selectable jumper, 31
R
synchronizing with module, 56
Programming Examples, 39–58
combining output channels, 57
direct register access, 148–149
driver list, 37
Reader Comment Sheet, 11
Reading
calibration card configuration register, 147
calibration checksum register, 147
calibration control register, 129
calibration isolation status register, 146
calibration resistor value registers, 144
card configuration register, 130
card control register, 137
full calibration, 162–164
module configuration query, 40–44
module ID, 38
module ID query, 40–44
outputting currents, 45–46
outputting voltages, 45–46
SCPI error checking, 47–49
set calibrated voltage output, 148–149
setting channel output, 50–51
setting output mode, 52
setting trigger, 54–55
channel mode register, 136
channel program jumper register, 134
channel relay control register, 136
channel trigger register, 135
configuration, 42–44
current calibration status register, 145
device type register, 127
using *OPC?, 56
Programming, register-based, 113–149
interrupt status register, 133
isolation status register, 133
manufacturer ID register, 126
module ID string, 42–44
Q
module serial number registers, 148
trigger control register, 131–132
voltage calibration status register, 144
VXI status/control register, 127
Reducing Settling Time, 78
Register-Based Programming, 113–149
addressing the registers, 114–118
base address, 117
Query
calibration status, 67
channel calibration readiness, 71–72
channel output mode, 90
channels calibration, 69
condition register contents, 96, 98
configuration, 40–44
current calibration process, 73–74
current module settings, 77
current trigger status, 79
register descriptions, 126–148
register example, 148–149
register maps, 120–125
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summary register, 96, 98
register offset, 118
trigger control register, 131–132
undefined registers, 140
reset and registers, 119
Registers
voltage calibration status, 144
VXI offset register, 128
VXI status/control register, 127–128
A16 address space, 114
A16/A24 register map, 120
A24 address space, 115
Removing
A24 register map, 121–125
addressing, 114–118
base address, 117
modules from mainframe, 21
terminal module, 26
Reset
calibration card configuration, 147
calibration checksum register, 147
calibration control register, 119, 129
calibration isolation status, 146
calibration resistor value, 144
card configuration register, 130
card control register, 137
output relay, 53
registers, 119
states, 119
Resistor, internal calibration, 68, 70, 144, 159
Ribbon Cable Connector
option A3H, 29
*RMC, 106
*RST, 53, 106, 119
channel current gain calibration, 143
channel current offset calibration, 142
channel mode register, 119, 136
channel program jumper register, 119, 134
channel relay control register, 119, 136
channel trigger register, 119, 135
channel voltage gain calibration, 141
channel voltage offset calibration, 140
clearing bits from, 97, 99
S
Safety Warnings, 8
Schematic, simplified, 16
SCPI
driver, 13, 37, 47, 100
error checking, 47–49
error messages, 150
errors, 47–49
condition register, 95–96, 98
current calibration status, 145
descriptions, 126–148
device ID register, 119
parameters, 61
device type register, 127
SCPI Commands
enable register, 97, 99
abbreviated, 60
event register, 95–99
example program, 148–149
Gain_DAC registers, 139
interrupt status register, 133
isolation status register, 119, 133
logical address register, 126
Main_DAC immediate registers, 138
Main_DAC triggered registers, 138
manufacturer ID, 119
ABORt subsystem, 63
APPLy subsystem, 45–46, 64–65
CALibration subsystem, 66–75
command separator, 60
DIAGnostic subsystem, 76–79
format, 60–61
implied, 61
INITiate subsystem, 80
linking, 62
manufacturer ID register, 126
map, 116
OUTPut subsystem, 46, 81–83
parameters, 61
maps, A16/A24, 120
maps, A24, 121–125
quick reference, 107–110
reference, 59–110
module serial number registers, 148
offset, 118
Offset_DAC registers, 139
operation status register, 95, 97
questionable status register, 95, 99
reset states, 119
software trigger register, 131
standard event register, 95
status byte register, 98
short, 60
SOURce subsystem, 50–52, 84–94
STATus subsystem, 95–99
SYSTem subsystem, 100
TEST subsystem, 101–103
TRIGger subsystem, 104–105
Self-Test, 53, 173
internal, 103
query results, 102
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*STB?, 106
Subsystems (SCPI Commands)
ABORt, 63
single internal, 101
Sense Leads, 33
Serial Number, 40, 148
APPLy, 45–46, 64–65
CALibration, 66–75
DIAGnostic, 76–79
INITiate, 80
OUTPut, 46, 81–83
SOURce, 50–52, 84–94
STATus, 95–99
Series Connections, 34
Setting
CAL Store Enable Jumper, 20
calibrated voltage output, 148–149
calibration conditions, 129
channel output, 50
channel output mode, 45
logical address register, 126
logical address switch, 19
output mode, 52
SYSTem, 100
TEST, 101–103
TRIGger, 104–105
Summary Register, 96, 98
Switches, logical address, 19
Synchronizing
output value, 45
trigger, 54–55
trigger source, 105
outputs, 54
voltage calibration path, 76
Settling Time, 112
outputs, multiple channel, 87, 93
program and module, 56
SYSFAIL* Line, 127–128
SYSTem Subsystem, 100
SYSTem:ERRor?, 47, 100
SYSTem:VERSion?, 100
reducing, 78
Short SCPI Commands, 60
Single Internal Self-Test, 101
Software
trigger, 54
trigger register, 131
SOURce Subsystem, 50–52, 84–94
SOURn:CURR[:LEV][:IMM][:AMPL], 50, 85
SOURn:CURR[:LEV][:IMM][:AMPL]?, 86
SOURn:CURR[:LEV]TRIG[:AMPL], 50, 54, 87
SOURn:CURR[:LEV]:TRIG[:AMPL]?, 88
SOURn:FUNCtion:MODE, 52–53, 89
SOURn:FUNCtion:MODE?, 90
SOURn:VOLT[:LEV][:IMM][:AMPL], 50, 91
SOURn:VOLT[:LEV][:IMM][:AMPL]?, 92
SOURn:VOLT[:LEV]TRIG[:AMPL], 50, 54, 93
SOURn:VOLT[:LEV]:TRIG[:AMPL]?, 94
Specifications, 111–112
*SRE, 98, 106
T
Terminal Module, 17, 22
attaching, 25
CAL output terminals, 36, 71–72, 76, 155
combining channels, 34, 57
configuring, 31
connections, 33
connectors, 30
crimp-and-insert option, 27–28
crimp-and-insert option, accessories, 28
current output connections, 33
external trigger connection, 35
option 135, 15, 29
*SRE?, 106
SRQ Interrupt, 98
Standard Event Register, 95
Status Byte, 96
option A3E, 15, 27–28
option A3E, accessories, 28
option A3H, 15, 29
register, 98
options, 27–29
summary register, 98
options available, 15
STATus Subsystem, 95–99
STAT:OPER:CONDition?, 96
STAT:OPER:ENABle, 96
STAT:OPER:ENABle?, 97
STAT:OPER[:EVENt]?, 97
STAT:PRESet, 97
P/J jumper, 17, 31, 52, 119, 134
removing, 26
ribbon cable connector option, 29
screw-type (standard), 22
terminal housing option, 29
V/I jumper, 17, 31, 52
voltage output connections, 33
wiring, 23–24
STAT:QUES:CONDition?, 98
STAT:QUES:ENABle, 98
STAT:QUES:ENABle?, 99
STAT:QUES[:EVENt]?, 99
TEST Subsystem, 101–103
TEST:NUMBer?, 101
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TEST:TST[:RESults]?, 102
*TST?, 103
*TRG, 106
Trigger
channels, 104
calibration connections (CAL), 158
calibration connections (CHAN), 158
calibration path, querying, 77
calibration path, setting, 76
calibration status register, 144
control register, 131–132
external, 54
external connections, 35
idle state, 80
ignored interrupt condition, 133
immediate, 54
channel output connections, 33
channel output connections, combining, 34, 57
channel output connections, querying, 92, 94
channel output connections, specifying, 65, 91, 93
channel output mode, 13, 45, 89
DC specifications, 111
process, 55
gain calibration constant, 141
query current status, 79
setting, 54–55
software, 54
mode calibration, 72, 74–75
offset calibration constant, 140
output adjustment, 154–165
source, querying, 105
source, setting, 105
VTL, 40, 47
VXI
status for channels, 135
system, ABORt command, 63
system, INITiate command, 80
system, TRIGger commands, 104–105
VXIbus backplane, 54, 81–82, 132
wait-for-trigger state, 80
TRIGger Subsystem, 104–105
TRIGger:SOURce, 54–55, 105
TRIGger:SOURce?, 105
Triggering, 54–55
offset register, 128
status/control register, 127–128
VXIbus, 13
backplane circuitry, 17
backplane trigger, 54, 81–82, 132
SYSFAIL* line, 127–128
TTLTRG line, 81–82, 131–132
word serial protocol, 113
W
Troubleshooting, 173
*TST?, 53, 103, 106, 173
TTLTRG Line, 81–82, 131–132
Two-wire Connections, 33
*WAI, 106
Wait-for-Trigger State, 80
WARNINGS, 8
Warranty, 7
Wiring Terminal Module, 23–24
Writing To
U
Undefined Registers, 140
Using
calibration card configuration register, 147
calibration checksum register, 147
calibration control register, 129
calibration isolation status register, 146
calibration resistor value registers, 144
card control register, 137
channel current gain calibration registers, 143
channel current offset calibration registers, 142
channel mode register, 136
channel relay control register, 136
channel voltage gain calibration registers, 141
channel voltage offset calibration registers, 140
current calibration status register, 145
Gain_DAC registers, 139
*OPC?, 56
trigger control register, 132
V
V/I Jumper, 17, 31, 52
option A3E, 32
option A3H, 32
VI_SUCCESS, 47
viPrintf, 40, 47
VISA Transition Library
See VTL
visa.h, 39
interrupt status register, 133
viScanf, 40
logical address register, 126
ViStatus, 47
Voltage
Main_DAC immediate registers, 138
Main_DAC triggered registers, 138
non-volatile (FLASH) memory, 140–143, 155
adjustment, 157–158
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Offset_DAC registers, 139
software trigger register, 131
trigger control register, 131–132
voltage calibration status register, 144
VXI offset register, 128
VXI status/control register, 128
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Notes
187 HP E1418A User’s Manual
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