![background image](http://html.mh-extra.com/html/national-instruments/tbx-1328/tbx-1328_manual_710238005.webp)
TBX-1328 Installation Guide
4
ni.com
chassis through the cable shield. This connection is not shown in the
SCXI module user manual. Allow the signal wires to exit through the
TBX-1328 cover opening.
Notes
When using the SCXI-1121 module to measure current, you must populate
R<0...7>, which corresponds to CH<0...7>. Since the SCXI-1121 can measure a maximum
current of 20 mA, the minimum usable resistor value is R = 10 V
÷
20 mA = 500
Ω
.
This terminal block does not provide strain relief for field signal wires. Add strain relief,
insulation, and padding for the wires, if necessary.
3.
Replace the TBX-1328 terminal block cover and tighten the captive
cover screws.
The signal connection is now complete.
Figure 1.
TBX-1328 Terminal Block Parts Locator Diagram
1
Cover Mounting Nut
2
Chassis Ground Screw Terminals
3
Backshell Mounting Kit
4
Cable Connector
5
Assembly Number
6
Serial Number
7
Current–Receiver Resistor Sockets
R<0..7> = Channel<0..7>
8
Signal Wire Screw Terminals
9
Product Name
250 V CAT II MAX CHANNEL-TO-CHANNEL
250 V CAT II MAX CHANNEL-TO-EARTH
2
1
1
3
C
HIGH VOLTAGE
4
5
6
3
1
8
2
9
1
7