Mediastar 770 Installation Manual

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MediaStar 770 Rack Installation Guide
The MediaStar 770 rack is a 19" 3U enclosure
that is used to house any combination of
MediaStar 'blade' based headend processor
modules (supplied separately).
The rack can be supplied with either a single 'pluggable'
mains power supply (770), or a dual redundant 'hot
swap' power supply (770-DR). There are 9 'blade'
positions available in the 770 rack and 8 'blade'
positions in the 770-DR. The 770 rack requires a single
100 – 240V mains source, and the 770-DR requires
two mains sources, preferably on independent circuits
for redundancy.
In both racks, the PSU module(s) convert electrical
mains input voltage to low voltage DC power that is
distributed to each of the 'blade' processor modules
fitted in the rack. It also provides forced air cooling
for the whole 770 rack enclosure.
The single PSU module has front panel screw fixings
so that in the event of a failure, it can be quickly
swapped out for another 771 PSU unit. The dual
redundant PSU has two independent PSU modules,
each individually capable of powering the entire rack,
so in the event of a PSU failure the other power supply
will automatically take over without disruption of the
'blade' processor modules.
200-2320 v5
What's in the box:
• 770 rack including a single 771 PSU, or
770-DR rack including two 726 PSU modules
• AC mains power cable(s)
• Rack mounting screw set
In all power supplies, the output power rails and fans
are monitored. If any problems are detected, the front
panel visible indicators will highlight the problem, and
where a 79x 'blade' is present in the rack, it will send a
warning to the Media Manager administration system
and optionally a corporate SNMP monitoring system.
It is possible to upgrade any existing single PSU 770
rack shipped since January 2011 with dual redundant
power supplies. To do this you will need to purchase the
770-DR-UG kit, which will provide you with a new power
supply card-frame and two 726 dual redundant PSUs.
Spare power supply modules can be ordered separately
from your reseller or Cabletime (771-RP or 726-RP).
When installing the 770 rack, please be aware that RF,
HDMI, signal cables and mains are routed to the rear,
and network and other communications cables are
plugged into the front of the 'blades'.
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