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Reason for GPIB delayed answers or unanswered

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Hi everyone!

Thsi is te situation, some days ago I was looking for a way to know the commands to remote control an instrument for EMC it is a UCS (Ultra compact simulator), I finally found the commands but they don´t work on the correct UCS. The commands are for the UCS500M but works on the UCS500N. For example, I send EC;]\n to check the connection of the interface and I sometimes receive the identification of the device (UCS500N) but some other times I don´t have an unswer until I send one or two commands more. I´ve tried this also with the UCS500M but never had an answer. I have tried both Visa Test Panel and a VI using the visa subvi´s and observed the same bahaviour.

Does anyone have an idea of what is happening?

Greetings.


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