Cisco D9854 Installation And Configuration Guide

Chapter 1 Introduction
8
Disaster Recovery
In the event of a transmission failure on the primary feed, the disaster recovery
allows for continued programming, with limited to no downtime. The failure
condition could be triggered by one of the following events:
 RF Lock Loss
 Unstable RF signal
 Transport Loss (RF locked, but no transport stream packets and NULL packets
received)
There are two types of disaster recovery implementations: Local or Uplink. Local
uses the disaster recovery settings configured on the D9854/D9854-I receiver. Uplink
uses the disaster recovery profile settings configured on the PowerVu Network
Center (PNC). This is optional and PNC Software Version 12.5 is required.
Local Settings
The local disaster recovery settings are used if the PNC uplink is set to allow local
disaster recovery and the disaster recovery profile on the unit is set to local. Once the
receiver detects a failure after the configured signal loss timeout, it will initiate a
disaster recovery search based on the search path determined by the disaster
recovery configuration. A DR symbol is displayed on the front panel, and the
D9854/D9854-I web GUI displays a D/R in progress status. During a disaster, the
receiver will attempt to tune to a different backup transport, based on the search
path configured. The origin transport consists of origin transport tuning parameters
and PE service IDs, configured in the Input menus. For more information on the
Input parameters, see RF1, RF2, RF3, RF4 (RFx) Input (on page 77) for the front
panel, and Setting up the RF Input (on page 165) for the web GUI.
Note: If you perform a master PE channel change during a disaster recovery search,
the search will end, the current tuning parameters will be locked, and the current
channel will become the origin channel. If you perform a tuning change during a
disaster recovery search, the search will end, the current user tuning parameters will
become the origin tuning parameters, and the origin may be updated by any of the
NIT updates that follow.
For example, the disaster recovery is configured as follows:
Program
Entry
Origin Transport
Channel Number
Backup 1
Transport
Channel
Number
Backup 2
Transport
Channel
Number
Backup 3
Transport
Channel
Number
PE1
101
11
101
801
PE2
2
12
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1005

Cisco D9854 Specifications

General

Model	D9854
Category	Receiver
Output	ASI, IP
Decoding	MPEG-2
Conditional Access	BISS
Receiver Type	Professional IRD
解密	DVB-CSA, BISS, AES
Input Frequency Range	950 MHz to 2150 MHz
Modulation Formats	QPSK, 8PSK
Symbol Rate	1 to 45 Msps
Power Supply	100-240 VAC, 50/60 Hz
Power Consumption	40W (typical)
Operating Temperature	0°C