Bugger - This just tripped me up again! A slight variation on the theme, but its clarly exactly the same issue... I had resolution set to "Auto resolution", and I was already using channel A & B for other stuff, so I used channel C as my trigger channel. All was well. I attached the external trigger...

Oooh, that's true! If I press the stop button, the rest of the trace appears.

Good answer.

Chalkie.

Picoscope 5444B, Tested on Picoscope 6.9.14.16 and Picoscope 6.10.2.2 (Beta) If the trigger is fired while zooming is active, then only the section of waveform currently zoomed to is shown correctly. If you change the zoom window, or close the zoom window then the waveform display is incomplete. If/...

HI Stuart,

Thanks for taking the time to check this out. Interestingly,if you have just channel A then you *can* use 15-bit, but then at 16-bit(single channel) the same thing happens; not ext trigger is detected.

Best regards,
Chalkie

I'm using Picoscope 6.9.14.16 connected to a Picoscope 5444B. I'm using Channel A & B, and an external trigger (which is 0V-3.3V digital signal) at 5ms/div This works fine with the scope set to 14 bits, but when I change it to 15 bits(two channels) then external trigger stops working (i.e. no trigge...