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 D9824 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 D9824
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 67) for the front panel, and Setting up
the RF Input (on page 151) 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.
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