AO Single Update.vi only outputs about 1.4 Volts maximum.

[Ray Friddle]

Why is it that when I use the "AO Single Update.vi" to output a voltage I can only get about 1.4 V max? Is this something inherent in the VI, or am I doing something wrong? I'm using the example code "Optimized Hardware-Timed PID Loop" as a starting point for my VI (for fast loops). I just disconnected the output from the PID and connected a single constant value (like say 5 V). But it won't put out more than 1.4 V. Help?

[Jonnie_5]

What's your hardware?

Does it work when nothing is connected to the card/breakout box/whatever is hooked up to it? If it does, then the connecting device has too high a load.

Can you get 5V output using MAX's test panels? If it does, the vi is the issue, and you can post it.

If it's an E-series DAQ card, you can run the online diagnostics to see if your card is at fault:
http://www.ni.com/support/selftest/