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Trigger hold off

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Trigger hold off

Postby ulek » Thu Jul 25, 2013 10:58 am

Hey,

Does the picoscope have something called trigger holdoff and how would I go about doing it in Labview.

Without the trigger holdoff the signal that I measure has a lot of jitter and is hard to get any measurements out of it.
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Re: Trigger hold off

Postby Martyn » Fri Jul 26, 2013 7:56 am

Picoscopes do not have a trigger holdoff feature.

What is the exact nature of the signal, it may be possible to set up an advanced trigger that will perform a similar function to holdoff. If you post a psdata file, File->SaveCurrentWaveform, we can take a look.
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Re: Trigger hold off

Postby ulek » Fri Jul 26, 2013 8:55 am

Hey,
Attached,
This is pulsed operation since it exaggerates the problem,
On the picoscope software I can get it to be stable but not in labview whatever trigger type or levels I use.
Also the trigger levels should be as low as possible since this wave form will be changing(the amplitude and possibly the duty ration, not the frequency)
Attachments
20130726-0001.psdata
(13.6 KiB) Downloaded 84 times
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Re: Trigger hold off

Postby Martyn » Wed Jul 31, 2013 10:03 am

It should be possible to trigger in Labview with this signal, it looks clean enough, and as you say Picoscope 6 copes with a simple rising edge trigger.

Your issue may be that you need to add some hysteresis when you set the trigger, we use 2560 in our console examples.
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