Compensation (DVB-S2/S2X)

Compensation contains parameters that compensate for measured signal impairments.

Reference Bits Plane selects the reference bits plane when generating the reference symbols. Reference bits are used to create referrence symbols, which then are used to compute EVM Error vector magnitude (EVM): A quality metric in digital communication systems. See the EVM metric in the Error Summary Table topic in each demodulator for more information on how EVM is calculated for that modulation format..

Default: Measured at BBHEADER/DATAFIELD

Choices: Measured at FECFRAME, Measured at BBHEADER/DATAFIELD, User supplied at BBHEADER/DATAFIELD

Frequency Estimation Mode determines whether the frequency error is estimated and compensated. Having an incorrect carrier frequency estimate can lead to significant errors during the demodulation process. The carrier frequency estimate is indicated in the Carrier Aggregation tab, where each component carrier has an absolute center and offset from that center frequency.

Default: Normal

Choices: Off, Normal

Compensate Symbol Clock Error enables or disables compensation for measured symbol clock error.

Default: Selected

Range: Selected, Cleared

Compensate IQ Offset enables or disables compensation for measured IQ offset.

Default: Selected

Range: Selected, Cleared

Compensate IQ Gain Imbalance enables or disables compensation for measured IQ imbalance.

Default: Cleared

Range: Selected, Cleared

Use Multicarrier Filter specifies whether to apply a filter to the carrier to filter out adjacent carriers.

Default: Selected

Range: Selected, Cleared

See Also

Measurement Control Tab