Triggered measure two edge separation

[dave6k]

I am trying to use a USB-6259 device to measure the separation time between two signals. I need to measure the time only after another trigger signal has gone high. I have tried to configure the measure separation task with a Start trigger on a rising edge, and also with a pause trigger so that the task pauses if the trigger signal is low. However, I am getting errors that this is not supported. Is there anyway to trigger this type of measurement?

[dave6k · Accepted solution]

I figured it out - arm start trigger.

[Kevin_Price]

With M-series counters, a regular start trigger can only be used for output tasks.  For counter input tasks, you'll need to configure what's known as an "arm start" trigger.  In LabVIEW, this must be done through a DAQmx Trigger Property Node rather than the standard DAQmx Trigger.vi

-Kevin P

P.S.  Oops, too late, you already figured it out.  That's what I get for clicking "reply" but not typing anything for a half hour.