FetchLowerOffsetMargin(string, double, out RFmxWlanMXSemLowerOffsetMeasurementStatus, out double, out double, out double, out double)
- Updated2025-04-08
- 2 minute(s) read
Returns the measurement status, margin, margin-frequency, and absolute and relative power corresponding to the margin-frequency for lower offset segment. The relative power is relative to the peak power in the carrier.
Use "segment(n)/chain(k)/offset(l)" as the selector string to read results from this method.
Syntax
Namespace: NationalInstruments.RFmx.WlanMX
public int FetchLowerOffsetMargin(string selectorString, double timeout, out RFmxWlanMXSemLowerOffsetMeasurementStatus measurementStatus, out double margin, out double marginFrequency, out double marginAbsolutePower, out double marginRelativePower)
Parameters
| Name | Type | Description |
|---|---|---|
| selectorString | string | Specifies a selector string comprising of the result name, segment number, chain number, and offset number. Example: |
| timeout | double | Specifies the timeout for fetching the specified measurement. Set this value to an appropriate time, longer than expected for fetching the measurement. A value of -1 specifies that the method waits until the measurement is complete. This value is expressed in seconds. |
| measurementStatus | out RFmxWlanMXSemLowerOffsetMeasurementStatus | Upon return, contains the lower offset (negative) segment measurement status, indicating whether the spectrum exceeds the SEM measurement mask limits in the lower offset segment. |
| margin | out double | Upon return, contains the margin from the SEM measurement mask for the lower offset. This value is expressed in dB. Margin is defined as the maximum difference between the spectrum and the mask. |
| marginFrequency | out double | Upon return, contains the frequency corresponding to the margin for the lower offset. This value is expressed in Hz. |
| marginAbsolutePower | out double | Upon return, contains the absolute power corresponding to the margin for the lower offset. This value is expressed in dBm. |
| marginRelativePower | out double | Upon return, contains the relative power corresponding to the margin for the lower offset. The relative power is relative to the peak power of the carrier channel. This value is expressed in dB. |
Returns
Returns the status code of this method. The status code either indicates success or describes a warning condition.