Picoscope edge counting - not working?

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mpgreen200
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Joined: Wed Mar 07, 2018 9:07 am

Picoscope edge counting - not working?

Post by mpgreen200 » Wed Mar 07, 2018 9:13 am

Hi,

Edge counting normally works but sometimes doesnt for no apparent reasone.
I've save a nice clean capture where the counting is not working.
Screen shot and psd file attached.
Please advise.

Mark.
Capture.PNG
Screenshot
20180307-0001.psdata
psd file
(218.94 KiB) Downloaded 111 times

Gerry
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Joined: Mon Aug 11, 2014 11:14 am

Re: Picoscope edge counting - not working?

Post by Gerry » Wed Mar 07, 2018 10:51 am

Hi Mark,

If the signal excursions go out-of-range then the edge counting won't work. Even though you have applied an offset, you're signal goes out-of-range (which you can see if you zoom into the top of it).

You have an offset applied to bring the signal down on the screen, but this is an 'Axis Scaling' option, that just adjusts the relative position of the scale on the screen it (i.e. it is a software offset that offsets the scale, not a hardware offset that offsets the signal).

The edge counting should work on a ±10V input range.

Regards,

Gerry
Gerry
Technical Specialist

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