Sarah, Thanks for your help! I also tryed using the ext trig with my laptop using Windows XP and got the same results ( not working with 5.12.6, works with 5.12.3). It certainly appears to be a software problem and not a hardware problem. BTW, does not matter if I set trigger from front panel or fro...

As I did with the previous version of picoscope, I was inputing a 0V to 5V square wave from the sync signal of an Agilent Waveform generator to the EXT input of the 3206 and with a sine wave on Ch A of the 3206. I set the trigger level to 2000mV (2V). With the previous version (5.12.3) os picoscope,...