Picoscope 3425 Labview 4-Channel

Sepp · Post by **Sepp** » Wed Sep 12, 2018 11:37 am

Hello, Im using a Picoscope 3425 with Labview 11 and have an odd Problem.

The Problem is that i need to use all four channels simultaneously. But if i enable Channel B or Channel D, Channel C is either Zero or the same Buffer as Channel D (if D is enabled).

I traced it back to the Funktion "

Code: Select all

ps3000_get_times_and_values

"

A sample VI an two Pics are attached. The VI is used in a larger Programm, so dont be surprised by some calcs who are not directly relatet to the Picoscope.

The attachment Sample_VI.jpg is no longer available

The attachment Setup_VI.jpg is no longer available

I hope someone got an idea.
kind regards: Sepp

Sepp · Post by **Sepp** » Fri Sep 14, 2018 7:09 am

After a long frustrating Search, i found the Fault at last. When i build this VI, i used the Example VIs from Picotech. The Problem was that the Example is made for two Channels but four Channels are read via the .dll.
The Crackingpoint is that in the Preferences of the .dll caller under Paramters, the Flag "Constant" was set for Buffer C and D.

This caused the strange Behavior.

Btw. If you want to use my VIs you are good to go. Just Change the Flags to FALSE like seen above.

And thanks to all who might have been investigating this Problem already.

Post by **Martyn** » Fri Sep 14, 2018 10:09 am

Good spot

, and thanks for letting us know it is now working.

Zadomo · Post by **Zadomo** » Wed Dec 05, 2018 9:55 am

Hallo Sepp,
ich wollte dich fragen, ob das Programme funktioniert oder du hast nicht weiter gemacht.

Grüße,
Zadomo

Post by **Martyn** » Thu Dec 06, 2018 8:57 am

Zadomo,
Do you have a PicoScope, and if so are you having difficulty in getting it to work with LabVIEW ?

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