RFmxSpecAn_ACPCfgOffsetRelativeAttenuationArray
- Updated2025-10-13
- 1 minute(s) read
Configures the attenuation, in dB, relative to the external attenuation.
Syntax
int32 __stdcall RFmxSpecAn_ACPCfgOffsetRelativeAttenuationArray(niRFmxInstrHandle instrumentHandle, char selectorString[], float64 relativeAttenuation[], int32 numberOfElements)
Parameters
| Name | Direction | Type | Description |
|---|---|---|---|
| instrumentHandle | [in] | niRFmxInstrHandle | This parameter specifies the RFmx session refnum. Instrument Handle In is obtained from the RFmxInstr_Initialize function. |
| selectorString | [in] | char[] | This parameter specifies a Selector String comprising of the signal name. If you do not specify the signal name, the default signal instance is used. The default value is "" (empty string). Example: "" "signal::sig1" You can use the RFmxSpecAn_BuildSignalString function to build the selector string. |
| relativeAttenuation | [in] | float64[] | This parameter specifies an array of attenuation values, in dB, relative to the external attenuation. Use this parameter to compensate for the variations in external attenuation when offset channels are spread wide in frequency. The default value is 0. |
| numberOfElements | [in] | int32 | Specifies the number of elements in each array. |
Returns
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 RFmxSpecAn_GetError function.
The general meaning of the status code is as follows:
Value | Meaning |
|---|---|
0 | Success |
Positive Values | Warnings |
Negative Values | Errors |