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sr830 Fast transfer mode hangs up

Dear colleagues. I am preparing a software for noise measurement in Labview. I encounter this problem:

When I switch the instrument into FAST transfer mode for windows (the Instrument becomes a talker and host computer is a listerner), the instrument starts sending data over GPIB.

The short description of FAST mode is here SR830 FAST mode, and the data transfer is described in SR830 manual between pages 97-103.

 

However, at high data rates (>128Hz) it hangs up even after few hundreds of samples taken, the number of samples vary.

I get the timeout error from VISA read. The VISA read function is set to synchronous reading. Without this setting, I cannot achieve higher data rate than 128Hz.

 

The cable between PC and Instrument is roughly 2 meters long, so I think this does not cause problem.

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Hi Ivan,

 

Thank you for posting in the forums! I would recommend posting in the Instrument Control forum (found here: http://forums.ni.com/t5/Instrument-Control-GPIB-Serial/bd-p/140) for better visibility, since this seems more like an instrument control issue than a LabVIEW specific issue.

Tina K.
Applications Engineering
National Instruments
ni.com/support
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Catatina, thank you. I have just posted it there.

Ivan

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