Novice user seeking suggestion how to create a ramp-hold-ramp analog voltage (0-5-0) out to DAQ card.

[Virginia]

There must be many ways to do this, but I'm having trouble seeing it. I want to ramp from 0 V DC to 5 V DC in 10 minutes. Hold for 5 minutes. Ramp down to 0 V in 5 minutes. End program. Output to AO on DAQ card (I can probably do this).

[preston_johnson]

depending on your volatage steps, you can use the new elapsed time VI in LabVIEW and a state diagram (up, then hold, then down) to orchistrate your voltage outputs.

If you have the NI PID toolkit, there is a VI with soak and hold functions that will perform these tasks for you.

In either case, you can use provide the user with controls such as up time, hold time, down time, voltage increment, max level, etc.

I hope this helps you get started.

Sincerely,

Preston Johnson