rdnSpectrumGroupSnrHysteresisValue

SNR hysteresis (a default hysteresis of 2dB) is used to 
determine the SNR threshold for the downward transition from 
upper modulation type to a lower modulation type. The hysteresis 
can be configured to a resolution of 1dB. The operator must be 
aware of the effects of lowering or increasing the hysteresis. An 
increase in hysteresis will delay the channel switching. A 
decrease in hysteresis could result in too many transitions.  For 
example, if the SNR threshold is configured to 20dB and the 
default SNR hysteresis of 2dB is used, then in the event of noise, 
a channel switch from primary to spare will take effect when the 
SNR value drops to 18dB on the primary channel (provided the 
spare channel's SNR is at least 20dB). When the primary channel's
SNR goes up to 20dB, the primary channel will be rolled back.
              
If a spare channel is not available or the spare channel's SNR is 
below 20dB, and if a secondary modulation profile is configured, 
then the modulation profile of the primary channel is changed.
              
This object applies to DRX and CMTS 2x8.
              
Allowable choies are 2dB or 3dB

MIB

RDN-CABLE-SPECTRUM-GROUP-MIB

OID

.1.3.6.1.4.1.4981.6.1.2.1.1.25

Type

column

Access

readwrite

Status

current

Parent

rdnSpectrumGroupEntry