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Recording Data with PS4262

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Recording Data with PS4262

Postby Felix » Wed Oct 23, 2013 8:48 am

Hello,

I ’am using a Picoscope 4262 with Labview 2012 SP1 on a Win7 32-bit system. I want to use the PS4000_stream VI, to measure two channels and write the collected data in a text-file. But the saved samples had some constantly recurring gaps or dropped samples. I modified the frame which is keeping the array length equal to “number of samples”.

Now I get a continuous Measurement. The current problem is a varying number of samples for one period of the measured signal. The number varies between approximately 1945 and 1960 samples for one period of a 50 Hz signal. I ’am searching for a way to collect and save a constant number of samples for a specific time range, e.g. 2000 samples for 20 ms.

I would be very gratefull if you could help me,

Felix
Attachments
PS4000_stream_recording.vi
Modified Version of PS4000_stream VI
(95.87 KiB) Downloaded 84 times
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Re: Recording Data with PS4262

Postby Hitesh » Thu Oct 31, 2013 10:04 am

Hi Felix,

If you are using a trigger, you can specify the number of post-trigger samples to capture based on the sampling interval/rate that you are using, then use the auto stop flag to stop the streaming capture.

I hope this helps.
Hitesh

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