PPS Trigger visualisation

[Loic VINET]

Hello,

I am using a python program in a raspberry connected to a digital Discovery.

I generate a trigger every 1 second with a duration of 100 ms.

When I visualise the trigger, I always see a peak at the beginning of the plot just before the peak of the trigger.

When I am using a trigger at higher frequency with a smaller peak, the peak disappears.

Why do I have this phenomena with the PPS?

 

[attila]

Hi @Loic VINET

Could you attach or send me the script ?

[Loic VINET]

Hi @attila

Here is the script.

The phenomena only appears when I am using the PPS trigger.

scriptLV.py

[attila]

Hi @Loic VINET

You are not using the capture properly. You stop after capturing 99% of intended samples, but you should collect until done state is reached.
As mentioned in an earlier reply, try using the much easier to use the 'single' acquisition mode.