NI RFmx SpecAn IQ Configuration Functions - ni/grpc-device GitHub Wiki
int32 __stdcall RFmxSpecAn_IQCfgAcquisition (niRFmxInstrHandle instrumentHandle, char selectorString[], float64 sampleRate, int32 numberOfRecords, float64 acquisitionTime, float64 pretriggerTime);
Configures the acquisition settings for the I/Q measurement.
Input | ||
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Name | Type | Description |
instrumentHandle | niRFmxInstrHandle | Identifies the RFmx session. You can obtain this parameter from the RFmxSpecAn_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 RFmxSpecAn_BuildSignalString) function to build the selector string). |
sampleRate | float64 | Specifies the acquisition sample rate, in samples per second (S/s). |
numberOfRecords | int32 | Specifies the number of records to acquire. |
acquisitionTime | float64 | Specifies the acquisition time, in seconds, for the I/Q measurement. |
pretriggerTime | float64 | Specifies the pretrigger time, in seconds, for the I/Q measurement. |
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 RFmxSpecAn_GetError) function. The general meaning of the status code is as follows: |
Value | Meaning |
---|---|
0 | Success |
Positive Values | Warnings |
Negative Values | Errors |
int32 __stdcall RFmxSpecAn_IQCfgBandwidth (niRFmxInstrHandle instrumentHandle, char selectorString[], int32 bandwidthAuto, float64 bandwidth);
Configures the bandwidth for the I/Q measurement.
Input | ||
---|---|---|
Name | Type | Description |
instrumentHandle | niRFmxInstrHandle | Identifies the RFmx session. You can obtain this parameter from the RFmxSpecAn_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 RFmxSpecAn_BuildSignalString) function to build the selector string). |
bandwidthAuto | int32 | Specifies whether the measurement computes the minimum acquisition bandwidth. |
RFMXSPECAN_VAL_IQ_AUTO_BANDWIDTH_FALSE (0) | The measurement uses the value of the bandwidth parameter as the minimum acquisition bandwidth. |
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RFMXSPECAN_VAL_IQ_AUTO_BANDWIDTH_TRUE (1) | The measurement uses 0.8 * sample rate as the minimum signal bandwidth. |
bandwidth | float64 | Specifies the minimum acquisition bandwidth, in hertz (Hz), when you set the bandwidthAuto parameter to RFMXSPECAN_VAL_IQ_AUTO_BANDWIDTH_FALSE. |
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 RFmxSpecAn_GetError) function. The general meaning of the status code is as follows: |
Value | Meaning |
---|---|
0 | Success |
Positive Values | Warnings |
Negative Values | Errors |