Omega Computer Hardware 1002 User Manual

Use r s Gu id e  
Shop online at  
www.omega.com  
e-mail: info@omega.com  
OME-PCI-1 0 0 2  
PCI Da ta Acq uisition Boa rd  
Ha rd w a re Ma nua l  
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Table of Contents  
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1. Introduction  
The OME-PCI-1002H/L card provides 12-bit ADC and two 16-bit digital I/O ports.  
1.1 General Description  
The OME-PCI-1002L and OME-PCI-1002H are high performance multifunction  
cards, with A/D and digital I/O for PC and compatible computers in a 5V PCI slot. This  
family has the following features: one 12-bit 110K A/D converter, 16 channels D/I, 16  
channels D/O, programmable interrupt source and true “Plug and Play” support. The  
OME-PCI-1002H/L provides 32 single-ended analog inputs or 16 differential analog  
inputs, which are jumper selectable. The OME-PCI-1002L is the low-gain model  
equipped with a high speed PGA (programmable gain amp.) with programmable gain  
control of 1,2,4,8. The OME-PCI-1002H is the high-gain model equipped with a high-  
gain/high-resolution PGA with programmable gain control of 1,10,100,1000. There are 16  
channels of TTL compatible digital output and 16 channels of TTL compatible digital  
input. This series provides three programmable trigger methods: software trigger, pacer  
trigger and external trigger. The external trigger can be configured as a post-trigger, pre-  
trigger or external pacer trigger. There are also several selectable interrupt sources: A/D  
conversion interrupt, pacer interrupt and external interrupt. This multifunction card also  
provides an A/D buffer and a data transfer rate of 2.7M words per second in non-burst  
mode. This powerful A/D control mechanism offers flexibility for various applications  
while minimizing system I/O overhead. The OME-PCI-1002 series is fully “Plug and  
Play” compatible and can operate at the full speed of the PCI bus (33MHz). This  
important feature makes the OME-PCI-1002 a high performance, cost effective solution  
for most data acquisition applications.  
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1.2 Block Diagram  
X86 System  
PCI BUS  
EPROM  
PCI Interface System  
Status  
Control  
Local System Controller  
Interrupt  
Digital Inputs  
16 bits DI  
16 bits DO  
Digital Outputs  
Pacer  
Generator  
4MHz  
A/D control logic  
A/D  
Data  
12-bit A/D  
Converter  
Gain  
Mux  
Analog Inputs  
Buffer  
Figure 1-1. The OME-PCI-1002 series block diagram.  
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1.3 Features  
Bus: 5V PCI (Peripherals Component Interface) bus.  
1. A/D:  
One A/D converter with maximum 110K samples/second.  
32 single-ended / 16 differential programmable inputs for OME-PCI-1002L/H.  
Three different A/D trigger methods.  
Three different external trigger methods.  
Programmable gain control, programmable offset control.  
2. DIO:  
16 digital inputs and 16 digital outputs (TTL compatible).  
High-speed data transfer rate: 2.7M word/sec (non-burst mode).  
3. Timer:  
One 16-bit machine independent timer for software (Timer 2).  
Two 16-bit pacer timer for A/D converter and interrupt (Timer0, Timer1).  
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1.4 Specifications  
1.4.1 Power Consumption  
+5V @ 960mA maximum, OME-PCI-1002L/H  
Operating temperature : 0°C to +70°C  
1.4.2 Analog Inputs  
Channels: ( software programmable )  
32 single-ended inputs/16 differential inputs, jumper selectable.  
Gain control : ( software programmable )  
OME-PCI-1002H, Gains - 1, 10, 100, 1000.  
OME-PCI-1002L, Gains - 1, 2, 4, 8.  
Input signal range :  
OME-PCI-1002L: Bipolar  
Range: ±10, ±5V, ±2.5V, ±1.25V  
OME-PCI-1002H: Bipolar  
Range: ±10, ±1V, ±0.1V, ±0.01V  
Input current: 250 nA max (125 nA typical) at 25 °C.  
Over voltage: continuous single channel to 70Vp-p  
Input impedance:  
OME-PCI-1002H/L: 1010// 6pF  
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1.4.3 D/I and D/O  
Channels: 16 channels DI, 16 channels DO  
DO: Digital output port  
Output level: TTL compatible  
Output current:  
I
oh  
= 0.5mA, I = 8mA  
ol  
DI: Digital input port  
Input level: TTL compatible  
Input current: 50uA (max)  
1.4.4 A/D Trigger Methods  
Trigger-methods :  
1. Software trigger  
2. Pacer trigger: 16-bit programmable timer/counter  
3. External trigger: Pre-trigger, Post-trigger, external Pacer trigger  
Pacer or software trigger  
External trigger  
CHn  
CHn  
t
t
Start  
End  
Start  
Post-trigger mode  
End  
Normal trigger mode  
External trigger  
External trigger  
CHn  
CHn  
t
t
Start  
Pre-trigger mode  
End  
Start  
End  
External pacer trigger mode  
Figure 1-2. Trigger methods of OME-PCI-1002.  
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1.4.5 Interrupt Channel  
Interrupt:  
INTA (Automatically assigned by PCI-controller).  
Enable/Disable: Via PCI control register and add-on control register.  
Interrupt source: (Selected by on-board control register)  
1. A/D conversion interrupt  
2. Pacer 0 interrupt (Timer 0)  
3. Pacer 1 interrupt (Timer 1)  
4. External interrupt  
2.  
1.  
Falling edge of Pacer 0  
End of Conversion  
Pacer 0  
IRQ  
A/D busy  
IRQ  
Falling edge of  
External trigger  
3.  
4.  
Falling edge of Pacer 1  
External  
Trigger  
Pacer 1  
IRQ  
IRQ  
Figure 1-3. Programmable interrupt source.  
1.4.6 Programmable Timer/Counter  
Type: 82C54-8 programmable timer/counter.  
Timers:  
1. Timer 0 for Pacer trigger and interrupt  
2. Timer 1 for External trigger and interrupt  
3. Timer 2 for software machine independent timer  
Input Clock: 4 MHz.  
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1.5 Applications  
z Signal analysis.  
z FFT & frequency analysis.  
z Transient analysis.  
z Speech analysis.  
z Temperature monitor.  
z Vibration analysis.  
z Energy management.  
z Industrial and laboratory measurement and control.  
Process Control  
Transition  
Signal Analysis  
Multi-I/O signals  
Temperature  
OME-PCI-1002  
Speech Analysis  
Vibration  
Frequency  
series  
Other Laboratory  
use  
PCI interface  
Process Monitor  
Single-task or multitask  
Figure 1-4. OME-PCI-1002 series multifunction cards.  
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1.6 Product Check List  
In addition to this manual, the package includes the following items:  
One OME-PCI-1002 card  
One CD-ROM  
Release Notes  
The release notes contain the latest information updates. We strongly suggest that you  
read them first.  
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2. Hardware Configuration  
2.1 Board Layout  
CON3  
CON1  
CON2  
Figure 2-1. OME-PCI-1002 board layout.  
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2.2 Jumper Setting  
There is only one jumper on the OME-PCI-1002. JP1 is used to select  
the analog input type. For single-ended inputs, users should connected pin 1, 3  
and pin 2, 4. For differential inputs, Pin 3, 5 and Pin 4, 6 should be connected.  
JP1  
JP1  
1
5
2
6
2
6
1
5
Differential  
Inputs  
Single-ended  
Inputs (Default)  
2.3 A/D Calibration  
A/D Calibration for OME-PCI-1002 card  
Step 1: Apply +10V to channel 0.  
Step 2: Apply +0V to channel 1.  
Step 3: Apply -10V to channel 2.  
Step 4: Run DEMO6.EXE.  
Step 5: Adjust VR1 until channel 0 = fff or ffe  
VR1, VR2, VR3  
Step 6: Adjust VR2 until channel 1 = 800 or 801  
Step 7: Adjust VR3 until channel 2 = 000 or 001  
Step 8: Repeat Step 4 & Step 5 & Step 6 until all read  
properly.  
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2.4 System Block Diagram  
D/I  
8254 Timer  
D/O  
A/D Buffer  
Data  
A/D  
A/D  
Adr  
Interrupt  
controller  
Trigger  
Logic  
PCI  
Interface  
Converter  
Controller  
Dispatch  
controller  
Multiplexers,  
Gain Amp.  
Scale Adj.  
NVRA  
External Trigger  
PCI BUS  
Figure 2-2. OME-PCI-1002 System Function Block.  
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2.5 Daughter Boards  
2.5.1 OME-DB-1825  
The OME-DB-1825 is a daughter board designed for 32-channel AD cards such as  
the OME-PCI-1002. Refer to the OME-DB-1825 user manual for details.  
37pin cable  
2.5.2 OME-DB-8225  
The OME-DB-8225 provides a on-board CJC (Cold Junction Compensation)  
circuit for thermocouple measurement and a terminal block for easy signal connection.  
The CJC is connected to A/D channel_0. The OME-PCI-1002 can connect CON3 direct  
to the OME-DB-8225 through a 37-pin D-sub connector. Refer to the OME-DB-8225  
user manual for details.  
2.5.3 OME-DB-37  
The OME-DB-37 is a general purpose daughter board for boards with D-sub 37 pin  
connectors. It is designed for easy wiring.  
2.5.4 OME-DN-37  
The OME-DN-37 is a DIN rail mount general purpose daughter board for boards with  
D-sub 37 pin connectors. It is designed for easy wiring.  
37pin cable  
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2.5.5 OME-DB-16P Isolated Input Board  
The OME-DB-16P is a 16-channel isolated digital input daughter board. The  
optically isolated inputs of the OME-DB-16P consist of a bi-directional optocoupler with  
a resistor for current sensing. You can use the OME-DB-16P to sense DC signal from  
TTL levels up to 24V or use the OME-DB-16P to sense a wide range of AC signals. You  
can use this board to isolate the computer from large common-mode voltage, ground  
loops and transient voltage spike that often occur in industrial environments.  
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2.5.6 OME-DB-16R Relay Board  
The OME-DB-16R, 16-channel relay output board consists of 16 form C relays that  
can be switched under program control. Applying 5 volts to the appropriate relay channel  
through the 20-pin flat connector can energize the relays. Each relay has its own LED that  
will light when the relay is energized. To avoid overloading your PCs power supply, the  
board provides screw terminals for external power.  
Note: Channel: 16 Form C Relay  
Relay: Switching up to 0.5A at 110ACV or 1A at 24 DCV  
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2.6 Analog Input Signal Connection  
The OME-PCI-1002 can measure signals in the single-ended or differential mode.  
In the differential mode each channel has a unique signal HIGH and signal LOW  
connection. In the single-ended mode all channels have a unique signal HIGH connection  
but share a common LOW or ground connection. Differential connections are very useful  
for low level signals (millivolt), since they better reject electrical noise that can affect the  
quality of the measurement. A differential connection is also necessary when a common  
ground is unacceptable. The benefit of using a single-ended connection is that twice the  
number of channels is available. In general, a single-ended connection is often a good  
choice when working with higher level signals (5V or 10V for example), especially if the  
signal is coming from an isolated device such as a signal conditioner. Several different  
types of wiring diagrams are discussed below.  
Figure 2-3A shows a differential connection to a grounded source. If the source is  
grounded, making a second connection to the card’s ground could cause a ground loop  
resulting in erroneous data. It is important to note that the maximum common mode  
voltage between the input source and AGND is 70Vp-p. If the card is connected to a  
source with a common mode voltage greater than 70Vp-p, the input multiplexer will  
be permanently damaged! When measuring common mode voltage, it is best to use an  
oscilloscope rather than a multi-meter.  
Figure 2-3B shows a differential connection to a floating source. In such cases a  
connection should be made between the low channel input and analog ground.  
Figure 2-4 shows connection of multiple sources in single-ended mode. This  
connection assumes creating one common ground will not cause a problem. This is  
normally the case when connecting to devices that are isolated or floating.  
Figure 2-5 demonstrates how to connect bridge transducers. Bridge transducers  
include strain gauges, load cells and certain type of pressure transducers. The diagram  
assumes that there is a single external power supply providing power to the bridge. Each  
bridge is connected to a differential channel. No connection is made between channel  
low and analog ground. A connection should be made between analog ground and the  
negative of the power supply. An isolated power supply is strongly suggested.  
Figure 2-6 demonstrates how to connect a 4-20mA current loop. Since the card  
reads voltages, the current is converted to voltage by passing it through a shunt resistor.  
By Ohms law (V=IR), when using a 250resistor, 4 mA will be converted to 1V and  
20mA to 5V. If the source is linear, the output voltage range will also be linear.  
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Figure 2-3A  
If the source is grounded, a second ground connection  
on the card could result in a ground loop.  
Figure 2-3B  
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Figure 2-4  
Figure 2-5  
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Figure 2-6  
R is a shunt resistor. A 250shunt resistor converts 4-20mA to 1-5Vdc.  
Signal Shielding  
z The signal shielding connections in Figure 2-3 to Figure 2-6 are all the same  
z Use a single connection to frame ground (not A.GND or D.GND)  
OME-PCI-1002  
Vin  
A.GND  
D.GND  
Frame Ground  
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2.7 Jumper Settings  
There is only one jumper on the OME-PCI-1002. JP1 is used to select  
the analog input type. For single-ended inputs, users should connect Pin-1, 3  
and Pin-2, 4. For differential inputs, Pin-3, 5 and Pin-4, 6 should be  
connected.  
JP1  
JP1  
1
5
2
6
2
6
1
5
Differential  
Inputs  
Single-ended  
Inputs (Default)  
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2.8 The Connectors  
CON1: Digital output connector pin assignment.  
Pin  
1
Name  
Pin  
2
Name  
Digital output 0  
Digital output 2  
Digital output 4  
Digital output 6  
Digital output 8  
Digital output 10  
Digital output 12  
Digital output 14  
PCB ground  
Digital output 1  
Digital output 3  
Digital output 5  
Digital output 7  
Digital output 9  
Digital output 11  
Digital output 13  
Digital output 15  
PCB ground  
1
3
5
7
9
2
4
6
8
10  
3
4
5
6
17  
9
8
10  
11 12  
13 14  
15 16  
17 18  
19 20  
11  
13  
15  
17  
19  
12  
14  
16  
18  
20  
PCB +5V  
PCB +12V  
CON2: Digital input connector pin assignment.  
Pin  
1
Name  
Pin  
2
Name  
Digital input 0  
Digital input 2  
Digital input 4  
Digital input 6  
Digital input 8  
Digital input 10  
Digital input 12  
Digital input 14  
PCB ground  
Digital input 1  
Digital input 3  
Digital input 5  
Digital input 7  
Digital input 9  
Digital input 11  
Digital input 13  
Digital input 15  
PCB ground  
3
4
5
6
17  
9
8
10  
11  
13  
15  
17  
19  
12  
14  
16  
18  
20  
PCB +5V  
PCB +12V  
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CON3: Analog input/output connector pin assignment. (For OME-PCI-1002H/L)  
Pin  
1
Name  
Pin  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
Name  
Analog input 0/0+  
Analog input 1/1+  
Analog input 2/2+  
Analog input 3/3+  
Analog input 4/4+  
Analog input 5/5+  
Analog input 16/0-  
Analog input 17/1-  
Analog input 18/2-  
Analog input 19/3-  
Analog input 20/4-  
Analog input 21/5-  
Analog input 22/6-  
Analog input 23/7-  
Analog input 24/8-  
Analog input 25/9-  
Analog input 26/10-  
2
3
4
5
6
7
Analog input 6/6+  
Analog input 7/7+  
Analog input 8/8+  
Analog input 9/9+  
Analog input  
10/10+  
8
9
10  
11  
12  
13  
14  
15  
16  
Analog input  
11/11+  
31  
32  
33  
34  
35  
Analog input 27/11-  
Analog input 28/12-  
Analog input 29/13-  
Analog input 30/14-  
Analog input 31/15-  
Analog input  
12/12+  
Analog input  
13/13+  
Analog input  
14/14+  
Analog input  
15/15+  
17  
18  
19  
Analog ground  
N.C.  
36  
37  
N.C.  
Digital ground  
External trigger  
Notes:  
1. When configured for differential inputs (JP1 3-5, 4-6), Pins 1-16 are the  
positive inputs and Pins 20-35 are the negative inputs.  
2. N.C. = No Connection  
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3. I/O Registers  
3.1 How to Find the I/O Address  
The Plug & Play BIOS will assign a valid I/O address to all OME-PCI-1002 cards in  
the system during the computer’s power-on stage. The ID numbers of OME-PCI-1002  
are shown below:  
Vendor ID  
Device ID  
= 1234  
= 1002  
Associated Driver Functions:  
1. P1002_DriverInit(&wBoard)  
This function detects the number of OME-PCI-1002 cards in the system.  
wBoard=1 Æ only one OME-PCI-1002 in this PC system.  
wBoard=2 Æ there are two OME-PCI-1002 in this PC system.  
2. P1002_GetConfigAddressSpace(wBoardNo, *wBase, *wIrq, *wPLX)  
Use this function to determine the resources for all cards installed in the system.  
This is used when writing directly to the card’s I/O addresses.  
wBoardNo=0 to N Æ totally N+1 cards of OME-PCI-1002  
wBase Æ base address of the board control word  
wIrq  
Æ allocated IRQ channel number of this board  
wPLX Æ base address of PCI-interface-IC  
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The sample program code is shown below:  
/* Step1: Detect all OME-PCI-1002 card first */  
wRetVal=P1002_DriverInit(&wBoards);  
printf("There are %d OME-PCI-1002 Cards in this PC\n",wBoards);  
/* Step2: save resource of all OME-PCI-1002 cards installed in this PC */  
for (i=0; i<wBoards; i++)  
{
P1002_GetConfigAddressSpace(i,&wBase,&wIrq,&wPLX);  
printf("\nCard_%d: wBase=%x, wIrq=%x, wPLX=%x", i,wBase,wIrq,wPLX);  
wConfigSpace[i][0]=wBaseAddress; /* save all resource of this card */  
wConfigSpace[i][1]=wIrq;  
/* save all resource of this card */  
/* save all resource of this card */  
wConfigSpace[i][2]=wPLX;  
}
/* Step3: control the OME-PCI-1002 directly */  
wBase=wConfigSpace[0][0];  
outpw(wBase+0x20,wDoValue);  
wDiValue=inpw(wBase+0x20);  
/* get base address the card_0  
*/  
*/  
*/  
/* control the D/O states of card_0  
/* read the D/I states of card_0  
wBase=wConfigSpace[1][0];  
outpw(wBase+0x20,wDoValue);  
wDiValue=inpw(wBase+0x20);  
/* get base address of card_1  
/* control the D/O states of card_1  
/* read the D/I states of card_1  
*/  
*/  
*/  
wPLX=wConfigSpace[2][2];  
_outpd(wPLX+0x4c,0x41);  
/* get PCI-interface base address of card-2 */  
/* channel_1, interrupt active_Low  
*/  
_outpd(wPLX+0x4c,0);  
/* disable all interrupts  
*/  
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3.2 The I/O Address Map  
The OME-PCI-1002 registers are given below. The address of each register  
is determined by adding the offset to the base address of the corresponding  
section.  
Section  
1
Offset  
4ch  
Name  
Access  
R/W  
Length  
PCI interrupt control  
register  
8/16/32 bits  
00h  
04h  
08h  
0Ch  
8254 timer1  
R/W  
R/W  
R/W  
W
8/16/32 bits  
8/16/32 bits  
8/16/32 bits  
8/16/32 bits  
8254 timer2  
8254 timer3  
8254 control register  
Analog input channel  
control register  
Status register  
W
10h  
8/16/32 bits  
10h  
14h  
R
8/16/32 bits  
8/16/32 bits  
2
Analog input gain  
control register  
General control  
register  
W
18h  
8/16/32 bits  
W
W
R
1Ch  
1Ch  
20h  
20h  
30h  
A/D software trigger  
Clear Interrupt  
Digital output register  
Digital input register  
A/D data register  
8/16/32 bits  
8/16/32 bits  
16/32 bits  
16/32 bits  
16/32 bits  
W
R
R
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3.2.1 Section 1  
Although there are 128 I/O ports used by the on-board PCI interface  
controller, only one register is used for most applications. The user should  
not modify the other registers! The PCI interrupt control register (4Ch)  
controls the interrupts generated by the system. The register is set to “disable  
interrupt” after power-on or hardware reset signal, thus no interrupts will be  
generated before this register is activated even if the user enables the add-on  
interrupt! In order to enable the PCI-interrupt, write 43h to this register. Write  
03h to this register if you want to disable the PCI interrupts.  
Following is the format of the PCI interrupt control register:  
Bit 31-Bit 7  
Not used  
Bit6  
Bit5-Bit3  
Bit2  
Bit1-Bit0  
Interrupt Enable Not used Interrupt Flag Interrupt Select  
Bit 6: Write an ‘1’ to enable the PCI-interrupt and a ‘0’ to disable PCI interrupt.  
Bit 2: This bit is read-only. A ‘1’ indicates that the Add-on has  
generated an interrupt, ‘0’ means that Add-on did not generate an interrupt.  
Bit1-0: Always write 1 to these two bits.  
Note:  
1. Since the OME-PCI-1002 supports “Plug and Play”, the interrupt  
number will automatically be assigned by your system. The user can  
determine the interrupt number by using standard PCI utilities or by  
using the OME-PCI-1002 software driver.  
2. If your system supports “Shared IRQ”, several peripherals may  
share the same IRQ at the same time. You must use Bit-2 to find out  
if an IRQ was generated from the OME-PCI-1002 or a different  
device!  
3. For more information about the PCI interrupt control, please refer to  
the user reference manual of the PLX-9050.  
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3.2.2 Section 2  
This group of registers is used by the add-on control logic. 64 bytes of  
I/O locations are used. Their detailed descriptions are shown below  
3.2.2.1 The 8254 Registers  
The 8254, programmable timer/counter, is used to generate periodic  
interrupts, A/D trigger and the machine independent timer. Addresses 00h,  
04h, 08h and 0Ch are used to program the 8254.  
Timer 0 is used as Pacer 0 and timer 1 is used as Pacer 1. Timer 2 is used  
as the machine independent timer (P1002_Dealy() function). Refer to Intel’s  
“Microsystem Components Handbook” for detailed programming information.  
3.2.2.2 The DI / DO Register  
Address 20h is used for DI / DO ports. Write to this port to send data to  
the DO register. Read from this port to input DI data.  
3.2.2.3 The A/D Buffer  
Address 30h is used for the A/D buffer. This is a read-only address.  
Reading from this port will return the data from A/D buffer. The format of A/D  
buffer is:  
Bit15-12  
Analog input  
channel  
Bit11-0  
A/D data  
Bit15-12: The channel number of the analog input. Only lower 4 bits of  
channel number are shown in this register.  
Bit11-0: The A/D data.  
30  
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3.2.2.4 The Status Register  
Address 10h is used is the status register. Reading from this address will  
return the data from the status register. The format of status register is:  
Bit7-6  
Gain  
Bit5  
Bit4  
Bit3  
Bit2  
Bit1  
Bit0  
8245  
8245  
8245  
Analog A/D Busy  
input type  
Reserved  
Control Timer 1 Timer 0 Timer 2  
Bit 7-6: Current A/D gain control.  
Bit 5 : Output of 8254 timer 1.  
Bit 4 : Output of 8254 timer 0.  
Bit 3 : Output of 8254 timer 2.  
Bit 2 : Reserved. Used for hardware testing.  
Bit 1 : Analog input type, ‘1’ indicated that analog input type is single-  
ended and ‘0’ indicated analog input is differential.  
Bit 0 : A/D busy signal. ‘0’ indicates busy, A/D is under conversion. ‘1’  
indicates not busy, A/D is complete conversion and is idle now.  
3.2.2.5 The A/D Software Trigger Register  
Writing to port 1Ch will generate an A/D trigger signal.  
Note: Since the user can trigger at a rate greater than the speed of A/D converter  
(125K), a delay time may be required between successive software triggers  
Delay time  
Software  
trigger  
8 µs  
Conversion Time  
A/D  
Busy  
Figure 3-1. Software triggered delay time.  
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3.2.2.6 Clear Interrupt  
Reading from 1Ch will clear the add-on interrupt.  
3.2.2.7 The Analog Input Selection Register  
The analog input channel selection register uses address 10h and  
address 14h is used by the analog gain control selection register. Write 0-31 to  
port 10h to select the channel number (for differential input, write 0-15).  
Write 0-3 to port 14h to select the gain control.  
Analog  
ADC  
AMP  
Mux.  
Select  
Gain control  
Channel select  
Figure 3-2. Analog input control.  
Note:  
1. For single ended inputs, channels 0-31 are available. For  
differential inputs, channels 0-15 are available. If you enter a  
channel number greater than the number available, those channels  
will be ignored. Thus, for single-ended inputs, only the last 5 bits  
are taken as the channel number. And for differential inputs, only  
the last 4 bits are taken as the channel number.  
2. Only the last two digits are used as the gain control code. The gain  
control codes and corresponding gains are shown below :  
For OME-PCI-1002L:  
Gain code  
Gain  
[0 0]  
1
[0 1]  
2
[1 0]  
4
[1 1]  
8
32  
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For OME-PCI-1002H:  
[Bit1,Bit0]  
Gain  
[0 0]  
1
[0 1]  
10  
[1 0]  
100  
[1 1]  
1000  
3. These registers are set to 0 after power-on or a hardware reset signal.  
3.2.2.8 The General Control Register  
The general control register (18h) is used to control the add-on interrupt  
source and the A/D trigger method. The format of this register is:  
Bit4-2  
Bit 1-0  
Interrupt source  
selection register  
A/D trigger method  
selection register  
3.2.2.8.1 Interrupt Source Selection  
There are four interrupt sources selectable for the OME-PCI-1002 (see  
section 1.4.4).  
[Bit4,Bit3,Bit2]  
[ 0, 0, 0 ]  
[ 0, 0, 1 ]  
[ 0, 1, 0 ]  
[ 0, 1, 1 ]  
[ 1, 0, 0 ]  
Others  
Description  
No interrupt source, disable all interrupts.  
Interrupt after A/D conversion completes.  
Interrupt after 8254 timer 0 falling.  
Interrupt after external trigger falling.  
Interrupt after 8254 timer 1 falling.  
No interrupt source, disable all interrupts.  
Note: Bit 3-3 of general control register is set to 0 after a hardware reset.  
33  
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3.2.2.8.2 Trigger Method Selection  
There are several trigger methods that can be selected by the user (see  
section 1.4.5):  
[Bit1,Bit0 ]  
[ 0, 0 ]  
Descriptions  
General trigger mode.  
8254 timer 0 trigger (internal pacer trigger ) or software  
trigger.  
[ 0, 1 ]  
[ 1, 0 ]  
[ 1, 1 ]  
External clock trigger mode.  
Pre-trigger mode.  
Post-trigger mode.  
Note:  
1. In the general trigger mode, both the 8254 timer 0 and the software  
trigger are used as the A/D trigger signals. The timer 0 and the software  
trigger should not be used at the same time! This means the user  
should not generate a software trigger while the 8254 timer 0 is  
activated!  
2. In the external clock trigger mode, an external input is taken as the A/D  
trigger signal. A single falling edge of the external trigger will generate  
a single A/D trigger.  
3. The pre-trigger mode employs the 8254 timer 1. The user should first  
configure timer 1, then set the trigger mode to pre-trigger. Once the  
pre-trigger mode has been activated, it will automatically turn on timer  
1 and start the A/D trigger. This will continue until a falling edge from  
an external trigger signal is received. Any change to the trigger mode  
selection will turn off the pre-trigger mode.  
4. The post-trigger mode employs the 8254 timer 1. The user should first  
configure timer 1, then set the trigger mode to post-trigger. Once the  
post-trigger mode has been activated, it will automatically turn off the  
timer 1 until it receives a falling edge from an external signal. Any  
change to the trigger mode selection will turn off the post-trigger mode.  
5. The A/D trigger selection is set to 0 after power-on or hardware reset.  
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4. Function Operation  
4.1 Digital I/O  
The OME-PCI-1002 series provides 16 digital input channels and 16 digital  
output channels. All signals are TTL compatible. The connector and block diagrams  
are given below:  
CN2  
BaseAddr+20h  
read signal.  
DI port  
Local Data Bus  
D0 ... D15  
DO port  
BaseAddr+20h  
write signal  
CN1  
Figure 4.1. DIO function diagram.  
35  
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4.2 The 8254 Timer  
The OME-PCI-1002 series provide 3 independent 16-bit  
timer/counters. Each timer has a different function. Timer 0 is used as  
Pacer 0. Timer 1 is used as Pacer 1. Timer 2 is used as the machine  
independent timer. The block diagram is given as follows:  
VCC  
4 M Hz  
EN  
CLK  
Timer 0  
Pacer 0  
Pacer 1  
Status  
OUT1  
Local Data Bus  
CLK  
D0…D7  
User  
Timer 1  
EN  
OUT2  
CLK  
Timer  
EN  
OUT3  
8254  
Figure 4-2. 8254 Block Diagram.  
4.3 The A/D trigger  
The block diagram of the A/D trigger is shown below:  
8254  
Timer 0  
Software Trigger  
To A/D  
Mux  
PR  
RS  
External Trigger  
0
1
D
EN  
Q
8254  
External  
Timer 1  
CLK  
Select  
Trigger.  
4M-Hz  
Trigger Select  
Figure 4-3. A/D Trigger Controller.  
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The A/D trigger logic can initiate an A/D conversion upon an  
external trigger. Valid external trigger signals must be TTL compatible  
and meet minimum pulse width requirements. The requirements are shown  
below:  
External trigger  
t
t
re  
du  
Symbol  
Name  
Minimum  
Maximum  
T
Duration time  
Recover time  
40ns  
du  
T
100ns  
re  
Note: The OME-PCI-1002 is designed only for time sensitive triggers  
(trigger is dependent only on the time of the falling edge of  
signal). For a level sensitive external trigger (trigger is dependent  
on the level of the input signal), the user can build the following  
external circuit the OME-PCI-1002:  
Comparator  
Input Signal  
External  
Trigger  
OME-PCI-  
1002 D/O  
DAC  
TTL buffer  
37  
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4.4 A/D Conversion  
An A/D conversion can be initiated three different ways: software command, internal  
programmable interval timer or external trigger. At the end of the A/D conversion, it is  
possible to transfer the data by polling a status register and reading the data when ready or  
by generating a hardware interrupt and an interrupt service routine. All modes are selected  
by a control register on the OME-PCI-1002 and are supported by the utility software.  
Below are key points for successfully collecting A/D data:  
z A/D data register, BASE+30h, stores the A/D conversion data.  
z A/D data conversion ready register, BASE +10h. Check if A/D data is ready.  
z A/D gain control register, BASE+14h, select gain.  
z A/D multiplexer control register, BASE+10h, select analog input  
channel.  
z A/D mode control register, BASE+0Ch, select trigger type and transfer type.  
z A/D software trigger control register, BASE+1Ch.  
z JP1 select single-ended or differential input.  
z 3 Triggers: Software, Pacer, and External trigger.  
z 2 Transfer Modes: Polling and Interrupt.  
The block diagram is given follows:  
16/8 to 1  
Multi-  
Gain  
12 bits  
A/D  
Control  
CN3  
Buffer  
Memory  
CPU  
plexer  
BASE+30h  
BASE+10h BASE+14h  
Trigger  
Logic  
BASE+1Ch  
Software Trigger  
OME-PCI-1002H/L  
38  
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Before performing A/D conversions, the JP1 jumper should be set for single-ended or  
differential.  
The software driver supports both polling and interrupt driven A/D, however, polling  
is the simplest way to perform an A/D conversion.  
The settling time of multiplexer depends on the impedance of the signal source.  
Because the driver does not incorporate the settling time, the user needs to program a  
delay when switching from one channel to another or when changing gains.  
Suggested Settling Times  
One settling time is suggested for all ranges of the OME-PCI-1002L. The settling time  
for the OME-PCI-1002H is based on the analog input range. The table below shows the  
suggested settling times for each range.  
OME-PCI-1002L Settling Time: 33 µseconds for all ranges  
OME-PCI-1002H Settling Time  
Input Range  
± 10V  
Settling Time  
23 µS  
± 5V  
28 µS  
± 0.1V  
140 µS  
± 0.01V  
1300 µS  
The software driver provides a machine independent timer, P1002_Delay(), for  
settling time delay. If the user calls P1002_Delay(), counter 0 will be reserved and can  
not be used as a user programmable timer/counter.  
The A/D converter requires a trigger signal to start an A/D conversion cycle. The  
OME-PCI-1002 supports three trigger modes, software, pacer and external trigger.  
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4.4.1 A/D Conversion Trigger Modes  
The OME-PCI-1002 supports three trigger modes.  
1 : Software Trigger :  
Write any value to A/D software trigger control register, BASE+1Ch, will initiate a  
A/D conversion cycle. This mode is very simple but very difficult to control  
sampling rate.  
2 : Pacer Trigger Mode :  
The block diagram of pacer timer is shown in section 3.2. The sample rate of pacer  
is very precise.  
3 : External Trigger Mode :  
When a rising edge of external trigger signal is applied, an A/D conversion will be  
performed. The external trigger source comes from Pin-17 of CON3.  
4.4.2A/D Transfer Modes  
OME-PCI-1002 supports two transfer modes.  
1 : polling transfer :  
This mode can be used with all trigger modes. You must disable timer 0 before  
polling. The A/D data can be read from the register at BASE+30h. Before reading  
the data first check the A/D ready bit at register BASE +10h READY_BIT=0.  
2 : interrupt transfer:  
This mode can be used with the pacer trigger or an external trigger. A hardware  
interrupt signal is sent to the PC when an A/D conversion is completed.  
For interrupt transfer, the use of the driver software is strongly recommended.  
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Software Trigger and Polling Techniques  
The steps below should be followed for software triggering and polling:  
1. Send 00h to A/D mode control register (software trigger + polling transfer)  
2. Send channel number to multiplexer control register.  
3. Send the gain control code value to gain control register.  
4. Send any value to software trigger control register to generate a software trigger  
signal.  
5. Scan the READY bit of the A/D high byte data until READY=0  
6. Read the 12 bits A/D data.  
7. Convert the 12 bits binary data to the floating point value.  
For example:  
/* ------------------------------------------------------------- */  
/* DEMO 3: AdPolling  
*/  
*/  
*/  
/* Compiler: Borland C++ 3.1, Mode Large  
/* Output Code: HEX code  
/* -------------------------------------------------------------- */  
#include "P1002.H"  
WORD wBaseAddr,wIrq;  
//-------------------------------------------------------  
WORD P1002_Delay(WORD wDownCount)  
{
WORD h,l;  
int count;  
wDownCount &= 0x7fff;  
if (wDownCount<1) wDownCount=1;  
/* Clock in=4M --> count 4000 = 1 ms, count 1 = 0.25 us */  
l=wDownCount&0xff;  
wDownCount=wDownCount / 256;  
h=wDownCount&0xff;  
outp(wBaseAddr+3*4,0xB0); /* mode_0, counter_2 */  
outp(wBaseAddr+2*4,l);  
outp(wBaseAddr+2*4,h);  
/* counter_2 low byte first */  
/* counter_2 high byte ,0x07D0=2000 */  
outp(wBaseAddr+3*4,0x80);  
/* latch counter_2 */  
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l=inp(wBaseAddr+2*4);  
h=inp(wBaseAddr+2*4);  
/* delay starting two clks */  
for (count=32767;count>0;count--){  
outp(wBaseAddr+12,0x80); /* latch counter_2 */  
l=inp(wBaseAddr+8);  
h=inp(wBaseAddr+8);  
if (h>=0x80) return NoError;  
}
return TimeOut;  
}
//--------------------------------------------------------  
void AdPolling(UCHAR channel, UCHAR gain, WORD delay)  
{
outp(wBaseAddr+0x18,0);  
// Select Mode 0  
outp(wBaseAddr+0x10,channel);  
outp(wBaseAddr+0x14,gain);  
P1002_Delay(delay);  
outp(wBaseAddr+0x1c,01);  
// A/D software tirgger  
}
void SetupTimer(WORD wChannel, WORD wCoef)  
{
WORD cmd;  
wChannel=wChannel&0x03;  
cmd=0x34+(wChannel<<6);  
outpw(wBaseAddr+3*4, cmd);  
outp(wBaseAddr+wChannel*4, (UCHAR)(wCoef&0xff));  
outp(wBaseAddr+wChannel*4, (UCHAR)(wCoef>>8));  
}
//=========================================================  
void main()  
{
int i,j;  
WORD wBoards,wRetVal,wPLX;  
WORD Drdy,wAdData=0;  
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char c;  
clrscr();  
P1002_DriverInit(&wBoards);  
printf("\n(1) Threr are %d OME-PCI-1002 Cards in this PC",wBoards);  
if ( wBoards==0 )  
{
putch(0x07); putch(0x07); putch(0x07);  
printf("(1) There are no OME-PCI-1002 card in this PC !!!\n"); exit(0);  
}
printf("\n(2) Show the Configuration Space of all OME-PCI-1002:");  
for(i=0; i<wBoards; i++)  
{
P1002_GetConfigAddressSpace(i,&wBaseAddr,&wIrq,&wPLX);  
printf("\n Card_%d: wBaseAddr=%x, wIrq=%x, wPLX=%x",i,wBaseAddr,wIrq,wPLX);  
}
P1002_GetConfigAddressSpace(0,&wBaseAddr,&wIrq,&wPLX); /* select card_0 */  
printf("\n(3) *** Card_0, wBaseAddr=%x ***\n",wBaseAddr);  
SetupTimer(0,1);  
AdPolling(0,0,23);  
// AdPolling have to disable timer 0  
// channel=0, gain=+/-10, delay=23us  
for(i=0;i<10;i++)  
{
outp(wBaseAddr+0x1c,01); // A/D software tirgger  
while(1)  
{
if( ((inpw(wBaseAddr+0x10))&0x01)==1) // check A/D busy?  
break;  
}
wAdData=((inpw(wBaseAddr+0x30))&0x0fff);  
printf("\nRang:+/-10V, Counter %d ,ADC channel 0 value: 0x%xH",i,wAdData);  
}
P1002_DriverClose();  
}
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5. Software and Demo Program  
1. Demo programs for DOS  
…\1002\BC\LARGE\DEMO>  
demo program  
…\1002\BC\LARGE\LIB>  
library and driver  
DEMO1: Digital output.  
DEMO2: Digital output and Digital input test by itself.  
DEMO3: A/D Polling for channel 0.  
DEMO4: A/D Polling for channel 0,1,2,3 and defferent gain 1,2,4,8.  
DEMO5: A/D Pacer trigger.  
DEMO6: A/D Calibration.  
DEMO7: Find card number.  
2. Demo program for Windows95/98/NT  
Refer to CD-ROM.  
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6. Diagnostic Program  
6.1 Power-ON Plug & Play Test  
Below are the steps for the power-on Plug & Play test:  
Step 1: Power-off the PC  
Step 2: Install OME-PCI-1002 without any extra external connections  
Step 3: Power-on the PC and watch the PC screen very carefully  
Step 4: The PC will perform its self-test first  
Step 5: The PC will detect the non-PCI physical devices installed in the system  
Step 6: The PC will display the information for these devices  
Step 7: The PC will detect the PCI Plug & Play devices installed in the system  
All PCI-device information will be shown Æ pay careful attention  
Æ There will be a PCI device with vendor_ID=1234, device_ID=1002 (OME-PCI-  
1002)  
If the Plug & Play ROM-BIOS successfully detects the OME-PCI-1002 card during  
the power-on state, the DOS and Windows software driver will also be able to detect the  
card. If the Plug & Play ROM-BIOS can not find the OME-PCI-1002, the software driver  
will not function. Therefore the user must make sure that the power-on detection is  
correct.  
6.2 Driver Plug & Play Test  
Step 1: Power-off the PC.  
Step 2: Install OME-PCI-1002 without any extra external connector.  
Step 3: Power-on PC and run DEMO7.EXE.  
Step 4: The I/O base address of all OME-PCI-1002 cards installed in the system will be  
displayed.  
Step 5: Verify that the total number of boards is correct  
Step 6: If more than one card, install a 20-pin flat cable on one of the OME-PCI-1002  
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cards.  
Step 7: If a cards D/O=D/I Æ this is the physical card number, remember this number.  
Step 8: Repeat the previous two steps to find the physical card number of all boards.  
6.3 D I/O Test  
Step 1: Power-off the PC.  
Step 2: Install one OME-PCI-1002 card with a 20-pin flat cable between CON1 & CON2.  
Step 3: Power-on the PC then run DEMO2.EXE.  
Step 4: The DO and DI are displayed as TEST OK or TEST ERROR.  
6.4 A/D Test  
A/D Test for OME-PCI-1002 card  
Step 1: Power-off the PC.  
Step 2: Install one OME-PCI-1002 card.  
Step 3: Power-on PC, run DEMO6.EXE  
Step 4: Apply +10V to channel 0.  
Step 5: Apply +0V to channel 1.  
Step 6: Apply -10V to channel 2.  
Step 7: Run DEMO6.EXE.  
Step 8: Check channel 0 = fff or ffe?  
Step 9: Check channel 1 = 800 or 801?  
Step 10: Check channel 2 = 000 or 001?  
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WARRANTY/DIS CLAIMER  
OMEGA ENGINEERING, INC. warrants this unit to be free of defects in m aterials and workm anship for a  
period of 13 m o n t h s from date of purchase. OMEGA’s WARRANTY adds an additional one (1) m onth  
grace period to the norm al o n e (1 ) ye a r p ro d u c t w a rra n t y to cover handling and shipping tim e. This  
ensures that OMEGA’s custom ers receive m axim um coverage on each product.  
If the unit m alfunctions, it m ust be returned to the factory for evaluation. OMEGA’s Custom er Service  
Departm ent will issue an Authorized Return (AR) num ber im m ediately upon phone or written request.  
Upon exam ination by OMEGA, if the unit is found to be defective, it will be repaired or replaced at no  
charge. OMEGA’s WARRANTY does not apply to defects resulting from any action of the purchaser, includ-  
in g b u t n o t lim ite d to m is h a n d lin g , im p ro p e r in te rfa cin g , o p e ra tio n o u ts id e o f d e s ig n lim its ,  
im proper repair, or unauthorized m odification. This WARRANTY is VOID if the unit shows evidence of  
having been tampered with or shows evidence of having been damaged as a result of excessive corrosion;  
or current, heat, m oisture or vibration; im proper specification; m isapplication; m isuse or other operating  
conditions outside of OMEGA’s control. Com ponents which wear are not warranted, including but not  
lim ited to contact points, fuses, and triacs.  
O M EG A is p le a s e d t o o ff e r s u g g e s t io n s o n t h e u s e o f it s va r io u s p ro d u c t s . Ho w e ve r,  
OMEGA neither assum es responsibility for any om issions or errors nor assum es liability for any  
dam ages that result from the use of its products in accordance w ith inform ation provided by  
OMEGA, either verbal or w ritten. OMEGA w arrants only that the parts m anufactured by it w ill be  
a s s p e c if ie d a n d f r e e o f d e f e c t s . O M EG A M A KES N O OTHER WA RRA N TIES O R  
REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESS OR IMPLIED, EXCEPT THAT OF TITLE,  
AND ALL IMP LIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND  
FITN ES S FO R A PA RTIC U LA R P U RP O S E A RE HEREBY D IS C LA IM ED. LIM ITATIO N O F  
LIABILITY: The rem edies of purchaser set forth herein are exclusive, and the total liability of  
OMEGA w it h re s p e c t t o t h is o rd e r, w h e t h e r b a s e d o n c o n t ra c t , w a rra n t y, n e g lig e n c e ,  
in d e m n ific a t io n , s t ric t lia b ilit y o r o t h e rw is e , s h a ll n o t e xc e e d t h e p u rch a s e p ric e o f t h e  
c o m p o n e n t u p o n w h ic h lia b ilit y is b a s e d . In n o e v e n t s h a ll O M EG A b e lia b le f o r  
consequential, incidental or special dam ages.  
CONDITIONS: Equipm ent sold by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic  
Com ponent” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in m edical  
applications or used on hum ans. Should any Product(s) be used in or with any nuclear installation or  
activity, m edical application, used on hum ans, or m isused in any way, OMEGA assum es no responsibility  
as set forth in our basic WARRANTY/DISCLAIMER language, and, additionally, purchaser will indem nify  
OMEGA and hold OMEGA harm less from any liability or dam age whatsoever arising out of the use of the  
Product(s) in such a m anner.  
RETURN REQUESTS /INQUIRIES  
Direct all warranty and repair requests/inquiries to the OMEGA Custom er Service Departm ent. BEFORE  
RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN  
(AR) NUMBER FROM OMEGA’S CUS TOMER S ERVICE DEPARTMENT (IN ORDER TO AVOID  
PROCESSING DELAYS). The assigned AR num ber should then be m arked on the outside of the return  
package and on any correspondence.  
The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent  
breakage in transit.  
FOR WARRANTY RETURNS, please have the  
following inform ation available BEFORE  
contacting OMEGA:  
FOR NON-WARRANTY REPAIRS, consult OMEGA  
for current repair charges. Have the following  
inform ation available BEFORE contacting OMEGA:  
1. Purchase Order number under which the product  
was PURCHASED,  
1. Purchase Order num ber to cover the COST  
of the repair,  
2. Model and serial num ber of the product under  
warranty, and  
3. Repair instructions and/or specific problem s  
relative to the product.  
2. Model and serial num ber of the product, and  
3. Repair instructions and/or specific problem s  
relative to the product.  
OMEGA’s policy is to m ake running changes, not m odel changes, whenever an im provem ent is possible. This affords  
our custom ers the latest in technology and engineering.  
OMEGA is a registered tradem ark of OMEGA ENGINEERING, INC.  
© Copyright 2002 OMEGA ENGINEERING, INC. All rights reserved. This docum ent m ay not be copied, photocopied,  
reproduced, translated, or reduced to any electronic m edium or m achine-readable form , in whole or in part, without the  
prior written consent of OMEGA ENGINEERING, INC.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Where Do I Find Everything I Need for  
Process Mea surem ent a nd Control?  
OMEGA…Of Course!  
Shop online at www.omega.com  
TEMPERATURE  
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Thermocouple, RTD & Thermistor Probes, Connectors, Panels & Assemblies  
Wire: Thermocouple, RTD & Thermistor  
Calibrators & Ice Point References  
Recorders, Controllers & Process Monitors  
Infrared Pyrometers  
PRESSURE, STRAIN AND FO RCE  
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Transducers & Strain Gages  
Load Cells & Pressure Gages  
Displacement Transducers  
Instrumentation & Accessories  
FLO W / LEVEL  
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Rotameters, Gas Mass Flowmeters & Flow Computers  
Air Velocity Indicators  
Turbine/ Paddlewheel Systems  
Totalizers & Batch Controllers  
p H/ CO NDUCTIVITY  
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pH Electrodes, Testers & Accessories  
Benchtop/ Laboratory Meters  
Controllers, Calibrators, Simulators & Pumps  
Industrial pH & Conductivity Equipment  
DATA ACQ UISITIO N  
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Data Acquisition & Engineering Software  
Communications-Based Acquisition Systems  
Plug-in Cards for Apple, IBM & Compatibles  
Datalogging Systems  
Recorders, Printers & Plotters  
HEATERS  
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Heating Cable  
Cartridge & Strip Heaters  
Immersion & Band Heaters  
Flexible Heaters  
Laboratory Heaters  
ENVIRO NMENTAL  
MO NITO RING AND CO NTRO L  
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Metering & Control Instrumentation  
Refractometers  
Pumps & Tubing  
Air, Soil & Water Monitors  
Industrial Water & Wastewater Treatment  
pH, Conductivity & Dissolved Oxygen Instruments  
M3927/ 0203  
Download from Www.Somanuals.com. All Manuals Search And Download.  

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