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SR630 Read Errors

Good Morning,

 

I am using a VI to read (over GPIB) a thermocouple reader (SR630).  The issue I'm having is that, seemingly at random, the VI will read a value that "splits" the instrument's measured value into two lines, accompanied with an error.  (eg:  If the current temperature is 298.1, the VI will read 2, then read 98.1, then read as normal).  

 

I have used the default measurement program provided in the instrument driver (ie, the 'reference' VI that shows how to take a simple measurement) and it has the same problem.  There doesn't appear to be any consistency to the error, either (ie, it doesn't always occur at the same time in a sequence of measurements).  

 

Can anyone provide some insight into this problem?  I'd link my VI, but since the problem occurs with the reference VI I'm not sure that it's really a problem with my program.  I'm completely befuddled as to how I can troubleshoot this, given that it's ocurring on both the reference VI and my own.  

 

Thanks very much for your time!  

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Go into the initialize vi and write the VISA property "GPIB Settings.Unaddressing"=TRUE

 

Whoever wrote that driver did not read the manual closely.


"Should be" isn't "Is" -Jay
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Hi karosten,

 

It looks like this forum post might have the answer you're looking for : http://forums.ni.com/t5/Instrument-Control-GPIB-Serial/Timeout-error-when-using-SR630-over-GPIB-USB/...

 

I hope this helps!

Jonathan R.
National Instruments
Applications Engineer
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