Trying to generate a Variable Frequency Output with PXI cards i have available

[NickH.]

I am trying to generate a signal (Analog or Digital) with a frequency range of 0 to 1440 Hz.

I need to stimulate an Acromag 250T-FQ (Link).

I tried doing it with a SW timed loop using the "wait(ms)" block in LabVIEW and the best freq i could get was 260Hz by cycling the Digital Output between high and low. I am open to suggestions, unfortunately i am in a little bit of a time crunch so i wont be able to buy new PXI card to solve this. I'm hoping to find a solution with what i got on hand.

I prefer to do it with one of the following PXI cards

PXI-6704

PXI-6232

PXI-6238

PXI-6528

I also have access to:

PXI-6255

PXI-6703

PXIe-4300

Accuracy is not super important as long as its within 5-10Hz of specified value.

I also need to generate 4 channels of variable freq. I'm hoping to get more than 1 channel out of whatever solution works, but i do have plenty of slots available in my chassis if that is not the case.

I found this example code, but I'm unsure if it will work with any of my available cards. i tried to replicate the VI in my system, but i could not identify/locate some of the vi components. My PXI system is a standalone model.

https://forums.ni.com/t5/Example-Code/Variable-Frequency-Signal-Generation-Using-LabVIEW/ta-p/351676...

Any help the community can provide would be very much appreciated

[ZYOng]

That community example works with any of your PXI devices. What VIs are you missing? Do you have NI-DAQmx driver installed?

[NickH.]

I have a full development suite installed. the problem is my development station is air gapped so I can't just download the VI posted without jumping through hoops. I was trying to recreate it via the picture but there a couple functions/subVI's that I could not find easily.

I've circled the ones I could not find.