What class/method/property in the AgXSAn IVI-COM driver should be used to enable the internal preamp on a N9020A?
Have a look at the IAgXSAnInputRF.PreAmpEnabled property:
In C# that would be:
var specan = new Agilent.AgXSAn.Interop.AgXSAnClass();specan.Initialize("", false, false, "Simulate=true");specan.Input.RF.PreAmpEnabled = true;specan.Close();
Command Expert is a great tool to help you find and try commands like this. It supports SCPI, IVI-COM, IVI-C and IVI.NET drivers.
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