Logic trigger AND doesn't work

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Justyn
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Posts: 0
Joined: Fri Feb 10, 2006 7:49 pm

Logic trigger AND doesn't work

Post by Justyn » Wed May 10, 2017 2:22 pm

Hi,

I'm finding that the logic "And" trigger doesn't work.

Under "Advanced triggers" I select two channels and set them to:
* Level
* Direction: Below
* Threshold 1: 1.5v
* Hysteresis 1%

If I check the box for both of them to "Used" then I get no trigger.

If I unselect one of the "Used" boxes so it triggers from only one, then it triggers correctly. That goes for either channel. So they are definitely set up correctly to trigger on their own.

But as soon as I select both as "Used" again no trigger, despite the fact that the conditions occur together.

Selection logic "Or" does function correctly.

I have attached an image of the event I am attempting to trigger from: channels A and C below a threshold.

Edit: System info:
Model: PicoScope 2408B
Serial Number: EP210/0041
USB Version: 2.0
Calibration Date: 1 July 2016
Hardware Version: 1
Driver Version: PS2000A Linux Driver, 1.1.6.18
Firmware Version: 1.3.3.0 / 1.0.49.0
Attachments
trigger-and-fail.png

Martyn
Site Admin
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Posts: 3226
Joined: Fri Jun 10, 2011 8:15 am
Location: St. Neots

Re: Logic trigger AND doesn't work

Post by Martyn » Tue May 23, 2017 6:14 am

I have tested the functionality on the Windows version and it all seems correct, so in theory this should work. We have a new Linux version of PicoScope 6 due out very soon so I will check against this and report back.
Martyn
Technical Support Manager

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