Instrument Control (GPIB, Serial, VISA, IVI)

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Tektronix TBS 2104 won't wait for trigger before acquiring

Hi Everyone,

I recently had to switch oscilloscopes and am using a Tektronix TBS 2104 for signal acquisition. I downloaded the vi for the the driver (looks like a generic TBS2000 series set of files) and I cannot get the trigger function to work at all. The scope just acquires the data after starting the vi regardless of what the trigger settings are. I would like to do a rising edge trigger from CH2 that will have a sinusoidal input and then have the scope read CH1 upon the trigger, so nothing super complicated, but I can't get the vi files to do it.

 

The triggering function works fine when I program the scope manually without labview, but the minute I plug in labview and even try to use the stock vi, the scope ceases to wait. Everything else about the acquisition is fine, I just don't understand why the scope won't wait for the trigger. Any thoughts or changes would be helpful. I'm pretty decent with the higher level labview commands, but the lower-level stuff, I don't have a ton of experience. Hopefully the driver just has a typo or something in it! I pasted the acquisition vi, the trigger config vi, the edge config vi. I can't even get the unmodified files to work.

 

Thanks in advance!

 

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Almost a typo.  The example posted has a channel selection connected to input and trigger source. 

Have you made the change there to channel 2, but also left the acquisition channel as CH1?  (Add a second control and wire to the Trigger Source.)

 

Hope that helps,

Craig

tek.png

 

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