RFmxDemod_CfgExternalAttenuation

RFmx Demod 19.1 Help

Edition Date: October 2019

Part Number: 374641M-01

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RFmx Demod 19.1 Help
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int32 __stdcall RFmxDemod_CfgExternalAttenuation (niRFmxInstrHandle instrumentHandle, char selectorString[], float64 externalAttenuation);

Purpose

Configures the attenuation of a switch (or cable) connected to the RF IN connector of the signal analyzer.

Parameters

Input
Name Type Description
instrumentHandle niRFmxInstrHandle Specifies the RFmx session. You can obtain this parameter from the RFmxDemod_Initialize function.
selectorString char[] Comprises the signal name. If you do not specify the signal name, the default signal instance is used.

Example:

""

"signal::sig1"

You can use the RFmxDemod_BuildSignalString function to build the selector string.
externalAttenuation float64 Specifies the attenuation, in dB, of a switch (or cable) connected to the RF IN connector of the signal analyzer. For more information about attenuation, refer to the Attenuation and Signal Levels topic for your device in the NI RF Vector Signal Analyzers Help.

Return Value

Name Type Description
status int32 Returns the status code of this operation. The status code either indicates success or describes an error or warning condition. Examine the status code from each call to an RFmx function to determine if an error has occurred.

To obtain a text description of the status code and additional information about the error condition, call the RFmxDemod_GetError function.

The general meaning of the status code is as follows:

Value Meaning
0 Success
Positive Values Warnings
Negative Values Errors

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