回复： Re: Ai start trigger 6120

[cynthiaxue]

hi,everyone! I use PXI 6120 to sample Voltage with internal clock and digital start trigger. terminal block is 2708. I connect trigger signal line to the Ai starttrigger SMB connector in front of 2708 pannel.In Labview program, I set PFI0 as the trigger source. When the program is runing, I found the voltage of Ai starttrigger is nearly 5 V and at this time there is no trigger from outside. I don't know Why? in this case ,the VI can't recieve the trigger even there is a true high voltage in the trigger line.I need it urgently.Hope to get your support ASAP!

[Nisar F]

Hi Cynthiaxue,

I hope you are doing fine. I have realized that no one has answered your question. I was wondering if the issue has been resolved or not ?

Best regards,

[cynthiaxue]

Nisar F ，Thank you for your reply. This issue has been resolved. The reason that I can't receive the trigger is that the trigger source output impedance is more than 1k ohm. I changed it and all is OK.