Sony MK7807V1 Manual Book page 8

Routing Switcher Reference Guide
Backup CPU boards
Each type of backup CPU board is identical to the main CPU board it supports. If the main
CPU fails, the backup CPU automatically takes over all control functions and the router
continues to function normally.
HDS-X5800/X3700/X3600 video routing switchers incorporate a redundant CPU board as
standard. The HKSP-R80 routing switcher controller offers sophisticated primary station
functionality, and system redundancy with the HKSP-R81 backup CPU, to any routing
switcher system. The HDS-X5800/X3700/X3600 or HKSP-R80 provide full system
management of all up-loading and down-loading of configuration files from a PC running
BZR-2000 routing switcher control software via a 10/100Base-T Ethernet-based network.
Backup Power Supply Units
A routing switcher backup Power Supply Unit (PSU) is a valuable option in critical
applications, such as on-air play out systems. It operates in parallel with the main router
PSU so that, if this fails, the backup supply continues to supply DC power to the routing
switcher. AC power for the backup PSU is fed through a separate connector, so that the
main and backup units can be powered from different AC power sources.
6