Compensation (DVB-S2/S2X)
Compensation contains parameters that compensate for measured signal impairments.
selects the reference bits plane when generating the reference symbols. Reference bits are used to create referrence symbols, which then are used to compute- Measured at FECFRAME - the reference bits are measured at the FECFrame plane.
- Measured at BBHEADER/DATAFIELD - the reference bits are measured at the BBHeader/Datafield plane.
- User supplied at BBHEADER/DATAFIELD - the reference bits are supplied by user at the BBHeader/Datafield plane. To select this option, the Payload must not be Unknown or Custom, and BCH/LDPC Encode On must be selected.
Default: Measured at BBHEADER/DATAFIELD
Choices: Measured at FECFRAME, Measured at BBHEADER/DATAFIELD, User supplied at BBHEADER/DATAFIELD
Carrier Aggregation tab, where each component carrier has an absolute center and offset from that center frequency.
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- Off - there is no frequency error estimation and compensation.
- Normal - the frequency error is estimated and compensated during the measurement interval.
Default: Normal
Choices: Off, Normal
enables or disables compensation for measured symbol clock error.
- Selected - Compensation for measured symbol clock error is applied to the signal.
- Cleared - No symbol clock error compensation is applied to the signal.
Default: Selected
Range: Selected, Cleared
enables or disables compensation for measured IQ offset.
- Selected - Compensation for measured IQ offset is applied to the signal.
- Cleared - No IQ offset compensation is applied to the signal.
Default: Selected
Range: Selected, Cleared
enables or disables compensation for measured IQ imbalance.
- Selected - Compensation for measured IQ imbalance is applied to the signal.
- Cleared - No IQ imbalance compensation is applied to the signal.
Default: Cleared
Range: Selected, Cleared
specifies whether to apply a filter to the carrier to filter out adjacent carriers.
- Selected - When other carriers are expected to be adjacent to the DVB-S2/S2X carrier of interest, this multicarrier filter can be used to filter out the unwanted carriers and minimize leakage into the DVB-S2/S2X carrier of interest.
The multicarrier filter for a carrier is designed to have a default passband of (1+alpha)*SymbolRate and a stopband of either 2*SymbolRate, or halfway between the carrier and the closest adjacent carrier, whichever results in a narrower stopband. It is possible that the filter cannot be designed based on the constraints (carriers too close together). In this case, the multicarrier filter will not be applied to the carrier. - Cleared - No multicarrier filter is applied to the carrier.
Default: Selected
Range: Selected, Cleared
See Also