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ps3000 Trigger Function

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ps3000 Trigger Function

Postby optotest » Thu Aug 31, 2006 12:09 am

The trigger function does not seam to work reliably with a NEGATIVE trigger slope:

ps3000_set_channel( ps3000_handle, 0, true, true,ps_range); ps3000_set_trigger(ps3000_handle, 0, 6000, 1, -50, 0);
ps3000_set_ets ( ps3000_handle, 0, 0, 0 ); // disable ETS
ps3000_get_timebase(ps3000_handle, timeBase, no_of_samples, time_interval, time_units, 1, max_samples);

ps3000_run_block ( ps3000_handle, config.no_of_samples, config.timeBase, 1, time_indisposed_ms );

After startup of the ps3000 this works a few times and then stopps triggering at all.

We tried a few times to get thru with tech. support but no help so far.
Anybody else using the TRIGGER and RUN_BLOCK configuration. It seams to work for the pico_scope application so fundamentally the scope is capable. I have a hunc that not all functions are exposed in the DLL !
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Postby Sarah » Thu Aug 31, 2006 10:15 am


Thank you for your post.

Have you tried our C GUI example? The trigger in this should give you some idea as to whether the function is working properly. Let me know how you get on with it.

Best Regards

trigger issue

Postby optotest » Thu Aug 31, 2006 9:26 pm

we don't have means to run the c-example

however we use exactly the same call sequence and parameters.

we are stuck at t his point.

it is VERY CLEAR - changing the parameter from

0: all works fine and it triggers on the POSITIVE EDGE of a 3Volt - 1 Volt 3Volt signal (simulated with a DC power supply)


1: it does not trigger at any voltage

We are stuck at this point.
Thanks for your help.

We did ask before - is there a way to get a source for the particular function. We already have a non-disclouser in place with you guys.
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Postby Michael » Tue Sep 05, 2006 8:45 am

Hello Optotest,

Yes you are already communicating with us regarding this issue. Can you send us one of your project files for Delphi so we can compile and test this here? Non-disclosure available on request.

Best regards,
Michael - Tech Support
Pico Technology
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