08-01-2017 12:07 PM
I saw this issue while developing code. The device I'm testing has a fan controller that outputs a pwm signal and expects a tach signal back that looks like a square wave. I send a command to the fan controller to turn on, and then using the PXI-4461 as an AWG, I supply a slow square wave so that the fan controller locks on and doesn't change it's pwm duty cycle. I then measure the duty cycle multiple times over a second to make sure it is locked on. This test worked just fine until I went to work on a different rack with a different configuration. The only difference was the 4461 and 4070 were right next to each other on the same bus in the PXIe-1085 chassis.
My question is, can instruments reset other instruments if they are on the same bus?
08-01-2017 02:19 PM
I have not had any issues with them resetting each other. Perhaps they are trying to use the same clock and/or trigger line in the PXI chassis.