Triggering an acquisition using digital output

[Philippe Bruyant]

I want to use a DAQ Card 6062E to trigger an external device. This device has an input line
for triggering whose usual state is +5V, and the acquisition is triggered when the state is 0V.
I would like to know if I can use eg the DIG line VI to trigger the acquisition, or if the DAQ card can be damaged if a digital line is configured as an output while connected to a device whose input has a +5V potential. Thank you.

[Lab Viewer]

It seems that the triggering line is for output or those voltages are required for trriggering (from an external source).
Try to measure the voltage on that line ...

[Lab Viewer]

Sorry, I misunderstood the problem.
It depends on the trigger device configuration inside your instrument. Thus, the DAQ board can be damaged in some circumstances.
Usually, it is a TTL standard trigger and should be safe enough.

[Philippe Bruyant]

Lab Viewer, Thanks for your help.
I will use a relay to trigger the acquisition.
Philippe

[Filipe A.]

Philippe;

The safer way to do that is by using the Dig Line of your DAQ board to switch a realy and that relay would switch the input trigger pin to ground.
Hope this helps.
Filipe
Applications Engineer
National Instruments

[Philippe Bruyant]

Filipe, I think the use of a relay
is a simple and safe solution.
thank you for your excellent idea.
Philippe