RFmxInstr_GetAttributeF64

NI-RFmx LTE 3.0 Help

Edition Date: January 2019

Part Number: 375417G-01

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int32 __stdcall RFmxInstr_GetAttributeF64 (niRFmxInstrHandle instrumentHandle, char channelName[], int32 attributeID, float64 *attrVal);

Purpose

Queries the value of an RFmx 64-bit floating point number (float64) attribute.

Parameters

Input
Name Type Description
instrumentHandle niRFmxInstrHandle Specifies the instrument session. The RFmx driver obtains this parameter from the RFmxInstr_Initialize function.
channelName char[] Specifies the channel to which the settings must be applied. Specify an empty string as the value of this parameter.
attributeID int32 Pass the ID of an RFmx string attribute.
Output
Name Type Description
attrVal float64* Returns the current value of the attribute.

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. 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 RFmxInstr_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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