How do I get an SCXI-1121 to turn on its output analog voltage?

I don't know if this is operator error or a hardware problem. I have never used an SCXI-1121 before to provide power to an instrument. The incoming signal on the 1121 responds like a champ when I drive the instrument from an external power supply, indicating all the connections are good. However, I guess I don't know the right Labview .vi to turn on the excitation voltage. Please help! Thanks, Bill

Bill-
A couple questions:
1) What sensor are you trying to measure?
2) What kind of excitation does it require?
3) Do you have NI-DAQ installed?
4) How are you reading this voltage?
5) Have you configured the chassis and data acquisition device in Measurement & Automation Explorer (MAX).
The best way to troubleshoot problems of this nature is in MAX. You can create a virtual channel and test it in MAX. To create a virtual channel, right click on the Data Neighborhood folder. Select create new, then NI-DAQmx global channel. Follow that wizard to create your custom channel. Then you can test it there (green test button).
Another thought, does your device require more current or voltage excitation than the SCXI 1121 can provide?
Voltage Excitation: 10V or 3.33V
Current Excitation: .15mA or .45mA
Hope this helps.
-Alan A.

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