High sampling rate - lower resolution

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diogoalves92
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Joined: Mon Sep 21, 2020 9:28 am

High sampling rate - lower resolution

Post by diogoalves92 »

Greetings,

I am measuring signals using a 6000E series PicoScope and need to temporally synchronize (or get close to it) the measured signals with another signal, however, I noticed that when I increase the Picoscope sampling rate to values in the low nanosecs instead of taking for example 1 second to obtain 10^8 samples (using 10 nanosec horizontal resolution), it takes 1.281 secs, if I increase the sampling rate to 1 microsec, it takes 1.002 sec, now, this value I'm measuring has some error associated to it but shouldn't be higher than 1 or 2 ms, I am using C# application stopwatch for time measurements, also used an high resolution micro timer for microsecond precision but values were similar. I am measuring the time between sending PS6000a.RunBlock(...) command and the BlockReadyCallback event being triggered. I am wondering if it is required some external clock signal to synchronize the picoscope or if extra configuration is required.

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