DC to AC Voltage using PXI-6025E

[nate]

Hello,

I was wondering if there is a way to convert the DC output from a PXI-6025E to an AC output using software?  I need to achieve a 4.25VAC exication. 

[Dennis_Knutson]

What exactly do you mean? The analog out of the board will output a waveform if that's what you specify. If you're using LabVIEW and DAQmx, look at the shipping examples for Hardware Input and Output>DAQmx>Analog Generation>Voltage.

[AnalogKid2DigitalMan]

Analog output's are current limited to ~10mA I think. You may need to buffer the output to supply enough current drive to you device that requires excitation, suggest you verify specs on both devices.

[nate]

I am fairly new to use AC so I may not really know what I am talking about, but I was under the impression that I only had a DC analog output.  I will check the examples that come with LabVIEW.

[AlanArmstead]

Nate,

You are right, you do have DC analog outputs, but you can output a series of voltages in such a way that it resembles an AC source (sine wave).  I would follow the suggestion posted by Dennis to check out the existing LabVIEW examples, maybe one like "Cont Gen Voltage Wfm-Int Clk.vi".

-Alan A.

[nate]

Thanks for all of the information.  I got the signal to work, but do not have enough current to get it to work correctory justing just the 6025E output.  Oh well, it was worth a shot. 

[AnalogKid2DigitalMan]

Like I suggested before use a buffer (i.e. op amp or transistor circuit) to boost the current from the DAQ to drive your device.