National Instruments Network Card NI TB 2709 User Manual
INSTALLATION GUIDE  
NI TB-2709  
PXI Terminal Block for S Series Devices  
This installation guide describes how to install and connect signals to the  
NI TB-2709 terminal block for use with PXI-6123/6133 S Series devices.  
The TB-2709 can also be used with the PXI-6122/6132 devices to access  
the first four AI channels.  
Introduction  
The TB-2709 is a terminal block assembly consisting of nine SMB  
connectors and a 14-pin I/O connector. The terminal block assembly  
connects directly to the front panel of National Instruments PXI-6122,  
PXI-6123, PXI-6132, and PXI-6133 devices, eliminating the need for an  
external cable.  
I
AI  
AI  
0
1
1
AI  
AI  
2
AI  
AI  
4
3
5
AI  
AI  
6
7
T
AR  
T
S
RIG  
2
1
2
Access Door to Configuration Switches 3 SMB Connectors (Analog Signals)  
14-Pin I/O Connector (Digital Signals)  
Figure 1. TB-2709 Device View  
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Do not substitute parts or modify equipment. Because of the danger of introducing  
additional hazards, do not install unauthorized parts or modify the device. Return the  
device to National Instruments for service and repair to ensure that its safety features  
are not compromised.  
You must insulate all of your signal connections to the highest voltage with which the  
TB-2709 can come in contact.  
Connections, including power signals to ground and vice versa, that exceed any of the  
maximum signal ratings on the terminal block can create a shock or fire hazard, or can  
damage any or all of the boards connected to the host computer and the terminal block.  
National Instruments is not liable for any damages or injuries resulting from incorrect  
signal connections.  
Clean the module and accessories by brushing off light dust with a soft non-metallic brush.  
Remove other contaminants with a stiff non-metallic brush. The unit must be completely  
dry and free from contaminants before returning it to service.  
Installation  
The TB-2709 connects directly to the front panel of the PXI DAQ device,  
as shown in Figure 2.  
2
3
1
1
2
Terminal Block Mounting Screws  
PXI Chassis  
3
68-Pin I/O Connector on PXI Device  
Figure 2. Connecting the TB-2709 to an S Series Device  
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To connect the terminal block to the PXI module I/O connector, refer to  
Figure 2 as you complete the following steps:  
1. Install the PXI module into the chassis and tighten the two module  
screws. You must install the PXI device before connecting the  
TB-2709. Refer to the DAQ Getting Started Guide for instructions on  
installing your PXI device.  
2. Guide the terminal block onto the PXI module connector.  
Caution Do not force the terminal block when inserting it into or removing it from the PXI  
module I/O connector.  
3. Tighten the two terminal block mounting screws.  
Signal Descriptions  
Figure 3 shows the front panel of the TB-2709, and Figure 4 shows the  
TB-2709 block diagram. Refer to Table 1 for a brief description of each  
signal available on the TB-2709.  
Figure 3. NI TB-2709 Front Panel  
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Front Panel  
SMB Connectors  
DAQ Device  
Signals  
AI <0..7> +  
AI <0..7> –  
5 kΩ  
AI <0..7> GND  
0.1 μF  
AI Start Trig  
D GND  
Figure 4. NI TB-2709 Block Diagram  
Table 1. TB-2709 Signal Descriptions  
Signal Name  
AI <0..7>  
Reference  
AI GND  
D GND  
Direction  
Input  
Description  
Analog Input channels 0 through 7.  
PFI 0/AI Start Trig  
Input  
As an input, this pin is a programmable  
function input (PFI).  
Output  
As an output, this pin is the AI Start  
Trigger signal.  
For more detailed descriptions of these signals, refer to the S Series User  
Manual.  
Additional signal configuration information is available in Measurement &  
Automation Explorer (MAX). To access this information in MAX, select  
your device under Devices and Interfaces, and click the Device Routes  
tab.  
Measuring Floating Signals  
You can use the TB-2709 to measure floating and ground-referenced  
analog input signals. To measure floating signal sources, move the switch  
located under the rubber-sealed door on the enclosure cover for the AI  
channel you are using to the ON (floating source) switch position. In the  
floating source switch position, the amplifier negative terminal connects to  
ground through a 5 kΩ resistor in parallel with a 0.1 μF capacitor. Table 2  
shows the TB-2709 switch configuration options.  
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Table 2. Configuration Summary  
Signal Source Types for S Series Devices  
TB-2709 Switch  
Configuration  
Floating Source  
Ground-Referenced Source  
Floating Source  
DAQ Device  
(Differential Input  
Mode)  
DAQ Device  
(Differential Input  
Mode)  
Signal  
Source  
Signal  
Source  
TB-2709  
TB-2709  
+
–
+
–
+
–
+
–
AI GND  
AI GND  
Recommended  
Not Recommended  
Ground-  
Referenced Source  
DAQ Device  
(Differential Input  
Mode)  
DAQ Device  
(Differential Input  
Mode)  
Signal  
Source  
Signal  
Source  
TB-2709  
TB-2709  
+
–
+
–
+
–
+
–
AI GND  
AI GND  
Recommended  
Improper Configuration  
Measuring Ground-Referenced Signals  
It is possible to set the switch on the TB-2709 to either the floating or  
ground-referenced source position to measure ground-referenced signals.  
However, for best results, use the OFF (ground-referenced source) switch  
position to avoid ground loops. Refer to the S Series User Manual for more  
information on measuring floating and ground-referenced signals.  
Cabling Options  
This section describes the cabling options for accessing digital signals on  
the TB-2709.  
A 14-pin connector on the bottom of the TB-2709 provides access to  
digital I/O signals. Use the MFIT-Pigtail Cable Assembly (part number  
194123-01) to access digital signals on the TB-2709. The MFIT-Pigtail  
Cable Assembly features a 14-pin I/O connector on one end and pigtail  
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conductors on the other end. The pigtail conductors on the cable assembly  
can be used to terminate digital signals to the connector(s) your application  
requires. Figure 5 and Table 3 list the pin assignments and wiring  
information necessary for connecting the TB-2709 to DIO signals.  
7
6
5
4
3
2
1
14  
13  
12  
11  
10  
9
GND  
CTR 0 OUT  
P0.3  
PFI 9  
CTR 1 OUT  
CHASSIS GND  
P0.7  
Pin 14  
Pin 8  
Pin 7  
Pin 1  
P0.2  
P0.1  
P0.6  
P0.0  
P0.5  
8
GND  
P0.4  
Figure 5. 14-Pin Digital I/O Connector  
Table 3. TB-2709 Wiring Information for 14-Pos MFIT-Pigtail  
Cable Assembly (Part Number 194123-01)  
Pin Number  
Wire Color  
Signal Name  
D GND  
1
1
2
3
4
5
6
7
7
8
Black  
Brown  
Red  
D GND  
P0.0  
Orange  
Yellow  
Green  
Blue  
P0.1  
P0.2  
P0.3  
CTR 0 OUT  
D GND  
D GND  
P0.4  
Violet  
Gray  
White  
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Table 3. TB-2709 Wiring Information for 14-Pos MFIT-Pigtail  
Cable Assembly (Part Number 194123-01) (Continued)  
Pin Number  
Wire Color  
White/Black  
Signal Name  
9
P0.5  
P0.6  
P0.7  
10  
11  
12  
13  
14  
White/Brown  
White/Red  
Drain Wire  
CHASSIS GND  
CTR 1 OUT  
PFI 9  
White/Orange  
White/Yellow  
Table 4 lists the National Instruments cables available for connecting the  
TB-2709 to both analog and digital user signals.  
Table 4. TB-2709 Cabling Options  
Cable  
Length  
0.6 m  
Part Number  
SMB-100, SMB Female to BNC  
763389-01  
Female Coaxial, 50 Ω  
SMB110, SMB to BNC Male  
Coaxial, 50 Ω  
1 m  
1 m  
763405-01  
194123-01  
14-Pos MFIT-Pigtail Cable  
Assembly  
Specifications  
This section lists the specifications of the TB-2709. These specifications  
are typical at 25 °C unless otherwise specified.  
Input/Output  
Refer to the documentation for your PXI-6123/6133 or PXI-6122/6132  
S Series device to determine the input/output specifications for your  
application.  
Caution Do not apply an input voltage greater than 42 Vpk/60 VDC to the TB-2709. Input  
voltages greater than 42 Vpk/60 VDC can damage the TB-2709 and any device connected  
to it, including the host computer. Overvoltage can also cause an electric shock hazard for  
the operator. National Instruments is not liable for damage or injury resulting from such  
misuse.  
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Physical  
Dimensions  
Height.............................................. 10.7 × 8.6 × 2.0 cm  
(4.2 × 3.4 × 0.8 in.)  
Weight............................................. 144.6 g (5.1 oz)  
I/O connectors  
68-position SCSI-II type................. 1, female  
SMB jacks....................................... 9  
14-pin auxiliary connector.............. One, Molex 14-pin microfit  
connector  
Shock and Vibration  
Operational shock .................................. 30 g peak, half-sine, 11 ms pulse  
(Tested in accordance with  
IEC-60068-2-27. Test profile  
developed in accordance with  
MIL-PRF-28800F.)  
Random vibration  
Operating ........................................ 5 to 500 Hz, 0.3 grms  
Nonoperating .................................. 5 to 500 Hz, 2.4 grms  
(Tested in accordance with  
IEC-60068-2-64. Nonoperating  
test profile exceeds the  
requirements of  
MIL-PRF-28800F, Class 3.)  
Environment  
The NI TB-2709 is intended for indoor use only.  
Operating temperature............................ 0 to 55 °C  
Storage temperature ............................... –20 to 70 °C  
Relative humidity................................... 10 to 90% noncondensing  
Pollution Degree .................................... 2  
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Safety  
This product is designed to meet the requirements of the following  
standards of safety for electrical equipment for measurement, control,  
and laboratory use:  
•
•
IEC 61010-1, EN 61010-1  
UL 61010-1, CSA 61010-1  
Note For UL and other safety certifications, refer to the product label, or visit ni.com/  
certification, search by model number or product line, and click the appropriate link  
in the Certification column.  
Waste Electrical and Electronic Equipment (WEEE)  
EU Customers At the end of their life cycle, all products must be sent to a WEEE recycling  
center. For more information about WEEE recycling centers and National Instruments  
WEEE initiatives, visit ni.com/environment/weee.htm.  
Where to Go for Support  
The National Instruments Web site is your complete resource for technical  
support. At ni.com/support you have access to everything from  
troubleshooting and application development self-help resources to email  
and phone assistance from NI Application Engineers.  
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Council of the European Communities using the manufacturer’s  
declaration of conformity. This system affords the user protection for  
electronic compatibility (EMC) and product safety. You can obtain the DoC  
for your product by visiting ni.com/certification. If your product  
supports calibration, you can obtain the calibration certificate for your  
product at ni.com/calibration.  
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