I tried using a 2 MHz square wave (1V) and that seems to work with the EXT trigger.

Are there differences between the EXT trigger input and the other channels - perhaps a voltage threshold or frequency limitation for the EXT trigger?

There are 3 examples using various triggers (all channel B). N is the signal that when I use EXT it doesnt seem to work.

Thanks for taking a look.

I tried the rapid trigger and the same problem exists. the software is up to date (according to the updater). Has anyone else had this problem before? Perhaps the structure if the trigger signal is an issue: Im using a 20 MHz pulse as the trigger (not a square wave or sawtooth etc). When I use this ...

I tried this and it did not work for me. I can use the Rapid trigger on either A or B and the triggering is OK. But when I switch A to the EXT and try to trigger off that it does not draw a trace. Im using software 6.6.16.12.

any suggestions? Thanks.

Thanks for the reply (I thought Id be notified at a reply but something went wrong) What I mean by "not triggered" is that the waveform is not stable in time as drawn on the screen. When I use B as a trigger reference for A, I can see the phase/time relationship between these signals is preserved. I...

Im having some trouble using Pico 6 and an external trigger. Using a reference signal in channel B I can trigger a Sample signal in channel A very well using the "auto" triggering options. but when I use the same signal in external trigger it wont trigger properly. the scope I am using is the 5203 a...