Read waveform not displaying data on front panel

[nook-you-ler]

I am very new to labview. I have been attempting to set up labview to use a tektronix 2024c oscilloscope.

Basically I'm using a slightly modified version of the triggered acquisition vi example. Right now I have set the scope up to trigger when it sees a 5 volt external pulse. This same pulse triggers a thyratron trigger, whose output I read on the scope.

The program runs perfectly on the scope. I see the data along with every parameter I set on labview. On the computer, the program fails at the read single waveform vi. This command always times out with an error saying it never received a trigger. So no data is ever sent to the waveform graph on the front panel. However, if I open up the read waveform vi I see the graph I'm looking for.

What am I missing? Why is this vi never seeing the external trigger?

[natasftw]

It's rather difficult to troubleshoot code we can't see.

It sounds like you open a subVI and see the data you desire.  Something is preventing it from reaching the top.  We'd want to see what you're doing to find out where you ran into problems.

[nook-you-ler]

Here is a pic. As I mentioned before, it's basically an example from the help menu with some slight changes.

I run the trigger mode in both ways and it changes little. It seems the program works up to the "continue continuous configuration" VI. I turn off continuous acquisition. However the scope itself is still acquiring after pulsed. Once or twice I've seen the waveform I'm looking for when I open up the read single waveform VI. I've never seen it on the main front panel of the program.

I get the errors

"Tektronix TDS 200 1000 2000 Series.lvlib:Wait for Trigger.vi<ERR>
Timeout before Trigger Occured"

with the code "1073999875"

I've googled the error number and I get nothing.