Does PCI6110 can get a square wave at 3KHz without amplitude distortion?

[Haiying]

We are using LABview with DAQ board(PCI6110)system in our electro-optical measurement.
Now we need to increase the signal frequency from the origianl 1Khz to 3Khz. Does it work and how to set it?

[Spencer S.]

Haiying,

It appears that you are outputting a square wave from your PCI-6110. Are you using an analog output channel or counter to output this signal? From the wording of your question, I am guessing that you are using an analog output channel. The PCI-6110 has a maximum update rate of 4 MS/s. So, outputting a square wave at 3 kHz is definitely possible. The output signal frequency is calculated as follows:

signal frequency = (cycles in buffer * update rate)/(data points in buffer)

Thus, you can manipulate any of these parameters to change the output signal frequency. Most likely, you will want to change the update rate. In LabVIEW, this is accomplished by changing the update rate input to AO Start.vi.

Good luck with your appl
ication.

Spencer S.