How do I set the excitation voltage on a NI 9237 to 3.3 volts?

[Bill_5335]

Good morning,

How do I set the excitation voltage on a NI 9237 to 3.3 volts?

The excitation voltage is at 2.5 volts now.

This is my first time working with this device.

Is this set in MAX or are there jumpers?

I want to set the excitation voltage to 3.3 Volts and not change it.

The NI 9237 is in a NI cDAQ-9172.

Thanks,

Bill

[enderWiggin10 · Accepted solution]

Hi POBA,

This can be set your programming environment.  For example, LabVIEW, Signal Express, a Task in MAX, or by a DLL call in a text based environment.  You will want to create a Strain, Custom Voltage with Excitation, or any bridge based task in any environment.

In MAX, right-click on your device and choose Create Task»Acquire Signals»Analog Input»...

In LabVIEW, place a DAQ Assistant»Acquire Signals»Analog Input»...

In Signal Express, Add a step for Acquire»DAQmx Acquire»Analog Input»...

In any C based language, you will want to call a function such as: DAQmxCreateAIVoltageChanWithExcit, DAQmxCreateAIStrainGageChan, DAQmxCreateAIBridgeChan

You can then specify the Exictation Source to be Internal at 3.3V.

Best,

[Bill_5335]

Hi Adam,

I figured out what I was doing wrong.

  I have three strain channels set up.

     I needed to change the excitation voltage on all three channels.

     Once I changed each channel to 3.3 volts, the DAQ Assistant would close without showing an error.

I don't think I was as clear as I should have been.

Thanks,

Bill