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I am trying to read data from SR810 Lockin amplifier over Prologix GPIB-USB

Here is the screenshot of the shell showing commands and their response

Here is the screenshot of the shell showing commands and their response

As we can see, the response to the commands is extremely delayed even when the data points are updated on-time.

Also when I am querying something, I am getting reply of the previous query. For example as we can see in the above screenshot, I am getting a response '8191' to the query print(prologix.ask('SRAT?')) which should ideally have given me '13' as a reply as shown in this second screenshot

Second Screenshot

What could be the probable reason of this delay?

Alan Moore
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NidhiS
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  • Would you use a tool like LICEcap ( http://www.cockos.com/licecap/ ) to record the delay? Do you have a link to the command set documentation your instrument uses? – Joe Friedrichsen Jan 04 '16 at 20:37
  • @JoeFriedrichsen the issue has been resolved, i just had to keep the baudrate of the instrument same as the baudrate of the host. But thanks for the link to the tool to record delay. – NidhiS Jan 05 '16 at 16:41

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