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Instrument Control (GPIB, Serial, VISA, IVI)

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NI 9870 Problem with connection in VISA test panel

I am using NI 9870 for serial communication. It shows me following errors when trying to connect in VISA test panel. I have cross checked all the paramters like bata bits, parity, bytes and also increased timeout. please help.

 

ATTRIBUTES :

IS PORT CONNECTED : INVALID PROPERTY VALUE

(VISA:  (Hex 0xBFFF001D) The specified attribute is not defined or supported by the referenced resource.)

 

READ COMMAND:

 

VISA:  (Hex 0xBFFF003A) Unable to start operation because setup is invalid (due to attributes being set to an inconsistent state).

 

 

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