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’.
Important Safety Instructions
Read these instructions.
Keep these instructions.
Heed all warnings.
Follow all instructions.
Do not use this apparatus near water.
Clean only with a dry cloth.
Do not block any ventilation openings. Install in
accordance with the manufacturer’s instructions.
Do not install near any heat sources such as radiators,
heat registers, stoves or other apparatus (including
amplifiers) that produce heat.
This unit must be installed using mains (AC supply) plugs
and sockets that contain a protective earth (ground)
connection. The mains socket(s) must be located near
the equipment, remain operable and be easily accessible
to disconnect the unit in the case of an emergency.
11. Protect the power cord(s) from being walked on or
pinched particularly at plugs, convenience receptacles,
and the point where they exit from the apparatus.
12. Only use attachments/accessories specified by the
13. Use only with the cart, stand tripod, bracket, or table
specified by the manufacturer, or sold with the apparatus.
When a cart is used, use caution when moving the cart/
apparatus combination to avoid injury from tip-over.
14. Unplug this apparatus during lightning storms or when
unused for long periods of time.
15. Refer all servicing to qualified service personnel. Servicing
is required when the apparatus has been damaged in any
way, such as power-supply cord or plug is damaged, liquid
has been spilled or objects have fallen into the apparatus,
the apparatus has been exposed to rain or moisture, does
not operate normally, or has been dropped.
10. Do not defeat the safety purpose of the polarised or
grounding-type plug. A polarised plug has two blades
with one wider than the other. A grounding type plug
has two blades and a third grounding prong. The wide
blade or the third prong are provided for your safety.
If the provided plug does not fit into your outlet, consult
an electrician for replacement of the obsolete outlet.
Quick Start Guide
770 Rack Installation Guide
Before installing the MediaStar 770 rack, ensure that the Regulatory Requirement Notices and Important Safety
Instructions at the beginning of this guide have been read.
Ensure that the mains supply has an adequate capacity and a reliable protective earth connection, particularly when
power distribution strips are used in equipment racks. If using a dual redundant PSU, ensure the mains supply on
each input is independent so the rack will continue to operate if one mains supply fails. If connecting a rack overloads
a mains fuse or over-current trip, all the equipment on that mains supply will be shut down. The mains power
required for the rack can be found on the rear of the unit.
NOTE: Where a 770 rack is fitted with dual redundant power supplies, hazardous mains voltages will still
be present inside the rack until BOTH mains cables have been removed.
If there is any doubt whatsoever about these installation requirements, a qualified electrician must be consulted.
Atmospheric electricity
Connection of the MediaStar 770 rack or processor modules directly or indirectly to a roof-top antenna without
suitable protection devices can leave the unit vulnerable to lightning strike/ atmospheric electrical discharge that
may result in damage and void the manufacturer’s warranty.
To minimise the possibility of damage from atmospheric electricity always:
• F ollow best practice as dictated by your local electrical code and/or trade association.
se coaxial over-voltage protection units.
ond all masts and antennas to the building protective earth, and where available, the lightning protection system.
nsure that the screens of all coaxial cables entering and leaving the headend and/or amplifiers are bonded to the
protective earth.
NOTE: Reliance upon the MediaStar 770 rack safety earth provided by the AC power cord alone is insufficient
to protect the unit from atmospheric voltage discharges.
Mounting the 770 unit in a 19” rack
All MediaStar equipment has a maximum operating temperature of 40°C. When mounting inside an enclosed 19”
rack tower, ensure there is sufficient cool free ventilation airflow to keep MediaStar equipment below its maximum
operating temperature. When mounting the 770 unit, ensure that the ventilation and fan grills in the sides remain
Use the mounting screws provided to fix the 770 unit to the rack rails in all four positions.
Connect the 770 unit to the mains with the IEC mains cable(s) provided. On the power supply module(s), the front
panel ‘POWER’ indicator should be illuminated (blue) and the ‘FAN’ indicator should be green. This indicates the
power supplies are working within their voltage limits and the fans are operating. The ‘FAULT’ indicator should be off.
If there is a problem with either the FAN operation or the PSU DC output voltages the ‘FAULT’ indicator will be
illuminated red. If the fans are stalled or turning too slowly, the ‘FAN’ indicator will be illuminated red too. In a
770-DR rack, a PSU’s blue ‘POWER’ indicator will flash if there is no mains going into it or if the PSU has totally failed.
Quick Start Guide
770 Rack Installation Guide
Replacement of a 770 rack power supply module
If the ‘FAULT’ indicator is red or all the indicator lights are off on a power supply module, then the unit should be
swapped out. This must be carried out by suitably qualified service personnel. Follow the swap-out instructions
provided with the new power supply module.
In a rack with dual redundant power supplies, a single power supply module swap-out can be done without affecting
the operation of the ‘blades’ in the rack. With a single 771 PSU equipped rack, a power supply swap-out will cause all
the ‘blades’ to be powered down which will result in a loss of IP video feeds or other services from this rack. Replacing
a (partially working) 771 PSU module may therefore need to be scheduled outside normal working hours or with a
suitable notification of the temporary disruption of service.
Please contact Cabletime or your equipment supplier to obtain a replacement 771 or 726 power supply module.
Installing processor module ‘blades’ in the 770 Rack
Any combination of MediaStar processor module ‘blades’ can be installed in a 770 rack. Modules may be installed
with the rack power on or off. If modules are inserted or removed with the power on, care must be taken to ensure
they are correctly aligned in the rack guides before sliding them in.
If the 770 rack is to be powered down to install a new processor module, remember that all the services being
provided by the ‘blades’ in that rack enclosure will be lost while it is powered down. Electrical static discharge
precautions should be taken when handling all ‘blades’.
To install a new ‘blade’, do the following:
1. Remove the blue blanking panel from the front of the rack. This is done by unscrewing the top and bottom
thumbscrew fasteners.
2. Take the new ‘blade’ from its packaging observing anti-static precautions. Touch only the edges of the printed
circuit board (PCB) or the metal case.
3. Carefully locate the top and bottom edge of the 'blade's' printed circuit board (PCB) into the plastic rack slides,
and gently push the module in. Care must be taken to ensure both PCB edges are located in the slides correctly.
As the module reaches the back of the rack, a plastic aperture cover on the rear of the rack will be pushed off by
the module’s connectors. Collect the discarded aperture cover.
4. If the rack is powered, the new ‘blade’ will automatically power up as it is pushed in. Indicators on the front of the
module will be illuminated appropriately.
5. Tighten the top and bottom thumbscrew fasteners to hold the module in the rack.
6. Connect the appropriate video, HDMI or RF input/output cables to the ‘blade’ connectors protruding from the rear
of the rack. Connect the appropriate network and control interface cables on the front.
7. Configure the ‘blade’ according to its own instructions.
Removing processor module ‘blades’ from the 770 rack
To remove a ‘blade’ processor card from the 770 rack:
1. Remove all the connection cables from the front and rear of the ‘blade’. Setting the location LED flashing on the
appropriate blade can help identify the correct unit from the rear of the rack.
2. Unscrew the top and bottom thumbscrew fasteners on the front panel of the processor module.
3. Withdraw the processor module from the rack taking care not to touch adjacent cards. Avoid touching the
exposed electronic components to prevent damage from static electricity discharges. Store the processor module
in an electrostatic proof bag.
4. Replace the original blue front panel cover that was supplied with the rack. Cover over the rear panel aperture
with adhesive tape to maintain the cooling airflow within the rack. Spare front covers can be purchased from
Cabletime or your reseller if necessary.
Quick Start Guide
770 Rack Installation Guide
Technical Specifications
100 – 240 VAC, 2.2 – 1A, 50/60 Hz
200 Watts via a single IEC mains connector for single PSU 770 racks
200 Watts from either one of two IEC mains connectors for dual redundant 770-DR racks.
Mains supplies should be independent for full redundant operation.
200 watts maximum, dependent on the type of ‘blades’ fitted
3A total
450mA per 774 or 784 DVB-S2 ‘blade’
19” rack mounting, 3U high
3.6 Kg without processor modules
8.3 Kg with 9 processor modules
4.1 Kg without processor modules
8.3 Kg with 8 processor modules
0 – 40º C
FCC Part 15, CE, CB
Quick Start Guide
770 Rack Installation Guide
Quick Start Guide
770 Rack Installation Guide
Declaration of Conformity
Cabletime Limited declares that the products listed below, when installed and operated
as described here, conform to the requirements of the directives shown:
Product names:
Product part numbers:
MediaStar Rack
770, 770-DR
Electromagnetic Compatibility (EMC) Directive
Low Voltage Directive
The standards applied are:
EN55032:2012/AC 2013 Electromagnetic compatibility of multimedia equipment – Emissions requirements.
EN55024:2010 (including corrigendum June 2011) Information Technology equipment – Immunity characteristics.
EN61000-3-2:2014Electromagnetic compatibility – Limits for harmonic current emissions.
EN61000-3-3:2013 Electromagnetic compatibility – Limitation of voltage changes, voltage fluctuation
and flicker.
IEC 60950-1:2005+A1:2009+A2:2013 Information Technology Equipment. Safety Requirements.
EN 60950-1:2006+A11:2009+A1:2010+A12:2011+A2:2013
UL 60950-1:2007/R:2014-10
CAN/CSA C22.2 No. 60950-1:2007/A2:2014-10
IEC 62368-1:2014 Audio/video, information and communication technology equipment.
Safety Requirements.
EN 62368-1:2014
UL 62368-1/2014
CSA/CAN C22.2 No. 62368-1-14
CB Certification Applicable to all CB scheme subscribing territories.
I hereby declare that the products listed here conform to the directives shown above when installed and used
according to their respective manuals.
Keith Watts
Technical Director
July 2017
Quick Start Guide
770 Rack Installation Guide
United States of America
Cabletime Limited declares this equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to Part 15 of the FCC Rules Subpart B (15.107, 15.109). These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a commercial environment.
This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance
with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment
in a residential area is likely to cause harmful interference in which case the user will be required to correct the
interference at his own expense.
This device complies with part 15 of the FCC Rules.
Operation is subject to the following conditions:
• This device may not cause harmful interference, and
• This device must accept any interference received, including interference that may cause undesired operation.
Correct Disposal of this Product
This marking on the product, accessories or literature, indicates that the product and its electronic
accessories should not be disposed of with other household waste at the end of its working life.
To prevent possible harm to the environment or human health from uncontrolled waste disposal,
please separate these items from other types of waste and recycle them responsibly to promote
the sustainable reuse of material resources.
Whilst all reasonable care has been taken to ensure the accuracy of this publication, the publishers and authors
cannot accept responsibility for any errors and omissions. Cabletime Limited reserves the right to revise this
publication and to make changes in the content from time to time without notice.
Copyright © Cabletime 2017. All rights reserved. No part of this guide may be reproduced, stored in a retrieval
system or transmitted in any form or by any means (electronic, mechanical, photocopying, recording or otherwise)
without the prior written permission of Cabletime Ltd.
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Quick Start Guide
770 Rack Installation Guide
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