ps4000GetUnitInfo function

MikeNuke · Post by **MikeNuke** » Tue Nov 05, 2013 10:45 am

Hi!
I am trying to modify my labview software we use to acquire data in order to automatically recognise which picoscope device we are using (we have a 4424 and 4227).

To do this I wanted to use the ps4000GetUnitInfo function to obtain the variant info.
I set up the call library function node, but when I start the VI I am getting error (in the call library) or labview crashing.

I don't understand what I did wrong...

I attach a test version of the VI.

Thanks!

Hitesh · Post by **Hitesh** » Mon Nov 11, 2013 2:23 pm

Hi MikeNuke,

Looking at your vi file, you need to make the following changes:

Remove the LabVIEW error data flow to/from the ps4000CloseUnit vi (the sub-vi doesn't output an error signal)
Set a value for stringLength e.g. 10
Add the requiredSize parameter for the ps4000GetUnitInfo function call

The call should then work - if you want to take a look at an example, download the SDK for the PicoScope 3204A and take a look at the sub-vi in the llb for obtaining unit information.

Regards,

MikeNuke · Post by **MikeNuke** » Wed Nov 13, 2013 9:31 am

Hi Hitesh,

I downloaded the 3204A SDK and just substituted the reference in the call library function with the ps4000 version.
Everything is working fine now

Thank you a lot!

Regards,

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