niScope Multi Read WDT VI does not work

[pcworld]

I have a problem using the niScope Multi Read WDT.vi. My hardware is NI PXI 5122. This happened when I tried to read multiple records from both channels. The VI could only return the waveform data of the first record from both channels. The rest records were messed up. Some waveform records even had zeros for amplitude and dt.

I changed the VI to the niScope Multi Read Cluster.vi. Everything worked fine. Attached is the test VI I used to demonstrate issue. For the niScope Multi Read VI, when the 1D cluster is chosen, it works fine. However, when switched to 1D WDT, the error appeares.

My NI Scope drive is version 3.1.1f1 as per MAX.

Is this a bug in niScope Multi Read WDT.vi or did I miss something?

[pcworld]

Sorry. The VI was not attached in the previous message.

[David L.]

Hi pcworld,

I am not able to reproduce what you are describing. I would suggest upgrading to the latest scope drivers (NI-SCOPE 3.3.1)  . Posting screenshots of your results may help as well.

Regards,

[pcworld]

David,

I attached 4 screen shots. The last shots showed the error. One of the waveform data has zeros in both amplitude and dt. I will try the new driver to see if it will correct the error.

Thanks.

[pcworld]

David,

I have updated the driver to 3.3.1 and the problem went away. Thank you very much for your help.