Cisco D9865, Инструкция по установке и эксплуатации

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5-18 D9865 Satellite Receiver Installation and Operation Guide 4035197 Rev C
Setting up Muting Threshold Controls
To Set Up the Muting Threshold Controls
Proceed as follows to set up the muting threshold controls:
1. From the user interface of the D9865, click Input > Satellite , expand Tuning
Setup and then click Muting Thresholds . The Muting Thresholds page is
displayed.
2. Select Enable Threshold Muting to mute the transport stream and audio in the
event of an unstable signal, poor signal, or no signal condition. The default is
selected.
3. The Transport Mute and Restore for both DVB-S C/N Margin and DVB-S2 C/
N Margin sets how the receiver reacts when the signal quality is severely
degraded when using DVB-S or DVB-S2 modulation. This allows you to set the
transport C/N margin values for the receiver. The receiver uses these noise
values/settings as limits during normal operation to determine whether to mute
the transport in the event of a noisy signal, poor signal or no signal condition.
The
Transport Mute is the lower limit for the transport C/N margin setting. The
transport will be muted when the C/N margin is below the mute setting for a
nominal delay of 1 second. The delay is between the time the condition is first
detected and the time the transport is muted. The adjustable operating range is
from -5.0 to 20.0 dB. The default setting for Transport Mute is 0.0.