I have a pico 3424 scope and am having trouble with the timebase function. When I run get_timebase_2 I don't get expected values for the max samples. I get one of two results. If requested samples is less than the max I get value of -513 for max samples and a status of 1. If the requested samples is...

I found the problem.
I had two versions of ps3000.dll (3.5.0.0 and 3.5.8.0) and was using the older version. I switched to the newer version and the trigger behaves as expected.

Ok, that answers the one question of what +/- integer values address what range. There seems to be something wrong however because no matter what integer value I pass, I cannot get it to trigger on a (-) voltage. I ran the picoscope6 software and it allows a neg. trigger so it's not the scope box. I...

I have searched the forum and haven't seen this question asked so I must be doing something wrong? I am trying to set an internal trigger but I can only trigger on a positive voltage. I understand that the value needing to be passed is a 16 bit integer that is scaled by the selected range. It appear...