Hi, I'm trying to interface with a HP 3497A Option 110. This is my code: try { _dev = new Device(boardIndex, 9); _dev.Clear(); _dev.Reset(); _dev.Write(ReplaceCommonEscapeSequences("DR3")); _dev.Write(ReplaceCommonEscapeSequences("DL3")); string resp = InsertCommonEscapeSequences(_dev.ReadString()); _dev.GoToLocal(); } catch (NationalInstruments.NI4882.GpibException ex) { } Highlighted in red is my issue. In order for me to read the response from the device, I have to call _dev.Write(ReplaceCommonEscapeSequences("DR3")) twice or I get a read timeout error. If I call it only once, I get a timeout error, but calling it twice works. Can anyone explain this? This happens for other options as well. Thanks!

Instrument Control (GPIB, Serial, VISA, IVI)

NI4882 Device Write Issue. Have to double write or I get a timeout.

I was able to get my instrument working without using double write statements. I had to disable serial polling in the NI Measurement and Automation tool.

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Instrument Control (GPIB, Serial, VISA, IVI)

NI4882 Device Write Issue. Have to double write or I get a timeout.

Re: NI4882 Device Write Issue. Have to double write or I get a timeout.