Thanks for your quick reply. According to this post: post22095.html
my device can sample at up to 20MS/s with timebase set to 0. If I set the timebase to 2, that means 5 samples/usec, across a 500usec window that's 2500 samples, right? So I set the preTriggerSamples control to 1250, postTriggerSamples to 1250, timebase to 2 and leave the oversample on 1. But I'm not getting the same graph as it it on the PicoScope 6 software using 50usec/div setting...
What am I doing wrong?
By the way I use the PicoScope3000aExampleBlock.vi