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E3646A Power Supply - IVI - Current Measurment

Question asked by arnon_a on Jul 10, 2014
Latest reply on Oct 17, 2014 by MattC

I'm using Agilent E3646A (2 Channels) PS with IVI driver and  C# programming language 
I have problems reading measurement from the power supply.

PS.Initialize("ASRL1::INSTR", true, true);
PS.Outputs.Item["Output1"].ApplyVoltageCurrent(3.0, 0.1);
double measuredValue = PS.Outputs.Item["Output1"].Measure(AgilentE36xxMeasurementTypeEnum.AgilentE36xxMeasurementCurrent);

I getting error - "VISA error = Timeout expired before operation completed."

1. the PS connected to ARSL1 , all other commands working apart from measurement reading.
2. I have tried the same line of code with E3640A (only one channel) and it is working fine.
3. tried E3646A with GPIB and it is working fine.

I want to use the serial port and not GPIB 

please help