PCI-6221 DC output

[J-M]

I have a pressure transducer:

excitation voltage 5 to 10 VDC and 0.7 mAmp (at 10 VDC);
output voltage 100 mV at 10 VDC.

I actually use a DC power supply for the excitation voltage but I want to use one of the analog output of PCI-6221 (with SCB-68) for the excitation voltage.  I work with Labview 8.0.

Jean-Marc

[ninevoltz]

You can't do that, the current supplied by the 6221 will not be high enough to power your transducer.

[AnalogKid2DigitalMan]

The 6221 analog outputs can drive up to +/-5mA, if you only need 0.7mA, then it should work.

If you can get by with just 5V all the time, there are multiple pins with +5 volts available on the 6221, typically the total they can supply is 1Amp, to be safe, read the manual.

Here are some links:

http://sine.ni.com/manuals/main?q=PCI-6221

Message Edited by AnalogKid2DigitalMan on 01-25-2007 12:23 PM