using DAQ to take external triggers and sync with SMU for measurement

[Shawn_Liu]

I plan to use a PXI-6230 and PXIe-4141 for a triggered measurement. 

the plan is to use the DAQ to take the external TTL trigger, route it to backplane. PXI_Trig0-7, and use it to trigger SMU for measurements. 

any one have any idea how to do this? I'm using C# for development. 

thanks

[santo_13 · Accepted solution]

You can do it as shown below in LabVIEW, in C# it will be similar, just that you would need to know the format of the terminal for the trigger.

If you are not too specific about which PXI_Trig line to use, you can use this method, DAQmx and PXI Platform services does a dynamic route between the source terminal and destination automatically.

Use the below trigger source format when configuring the Measurement Trigger on the SMU session.
/<PXI6230instrument_alias>/<PFILine>

[Shawn_Liu]

Great! thanks for the reply. 

I just figured out how to use connect terminals in C# today and routed PFI0 from PXI-6230 to PXI_trig0. 

I'll receive my SMU module next week and I'll try your method. I hope it will work. 

I wish NI has a complete manual to show how to use those modules like Keithley does, not just help files and examples. 

[Shawn_Liu]

it works well like what you suggested. thank you

[santo_13]

Good to know that your query was addressed. Please mark the appropriate reply as the answer to close this thread.