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PD2011-9030-02
PRO
ception
Proception Limited,
177-187 Rutland Road
SHEFFIELD
S3 9PT
United Kingdom
Web:
http://www.proception.co.uk/
e-mail: [email protected]
Performance data given are typical unless otherwise stated. Proception Limited reserves the
right to change product designs and specifications without prior notice.
proMHD14R
Dual-mode
4-Way Outdoor UHF Amplifier
2-Year Guarantee
This guarantee covers failure of your
PRO
ception product resulting from manufacturing
defect within a period of 2 years from the date of supply to the end-user. This guarantee
does not cover damage to the product caused by abuse, tampering, defective installation or
natural causes such as lightning discharge. Repair or attempted repair, other than by the
manufacturer, will render this guarantee void. This guarantee does not affect a consumers
statutory rights.
INSTALLATION INSTRUCTIONS
This unique versatile amplifier is an addition to the
PRO
ception range of UHF masthead
products. The unit has two modes of operation, allowing it to be used either as a
straightforward multi-way aerial amplifier for off-air signal distribution, or as a return-
path amplifier for distribution of the UHF loop-through output of a Sky* receiver. In the
latter mode full support is provided for remote infrared receivers (eyes). The use of F
connectors makes the amplifier easy to use with a wide range of cable sizes and helps to
ensure good system screening.
Features
n
Dual-mode operation can operate as an aerial amplifier, or as a return-path amplifier
with Sky* remote control facilities.
n
Flexible powering options: 5 - 12 V in aerial-amplifier mode; 9 V from Sky* receiver in
return-path mode.
n
Excellent noise figure and output capability.
n
Input filtered below 470 MHz to reduce risk of interference problems from CB, private
mobile radio, TETRA, etc.
n
Suitable for both digital and analogue applications, fully DTT-compatible.
Application guide
See application example diagrams on page 2.
Aerial-amplifier mode:
in this mode the proMHD14R functions as a straightforward 4-
way UHF masthead amplifier. The input will usually come directly from the UHF antenna.
Power (5 - 12 V DC) can be supplied via any of the four outputs, providing flexibility in
the location of the power unit. In this mode no power is passed to the other outputs and
the return-path amplifier stage is disabled.
Return-path mode:
this mode is automatically enabled when the amplifier is powered
via its input. Usually the input will be fed directly from the second RF output (RF OUT-2) of
a Sky Digibox or Sky+* receiver, which should have its 9 V second outlet powering enabled
(see over). In return-path mode power is present at all outputs for powering remote
infrared receiver eyes, such as the
PRO
ception proSAT1EYE. Infrared receiver power is
individually short-circuit protected, so that a DC short at any output will not affect operation
of remote control via the other outputs.
The relatively low forward gain of the amplifier (4.5 dB) is sufficient to compensate for
additional downlead cable losses in most systems, whilst avoiding intermodulation and
other overload problems which easily result from the use of excessive gain. Where more
gain is needed in aerial-amplifier mode (for example in installations with very long cable
runs, or in weak signal areas) the proMHD14M or proMHD14V masthead amplifiers
should be considered (these alternative products do not provide return-path capability).
* Sky and Sky+ are registered trade marks of British Sky Broadcasting Group PLC.
Freeview is a registered trade mark of the British Broadcasting Corporation.
Notes
1. Signal handling capabilities are given for 5 analogue TV channels plus up to 6 DTT multiplexes at
£
14 dB
relative level.
2. Limiting values 4.8 .. 12.6 V (powered via output, aerial-amplifier mode). Built-in surge protection is provided.
3. Limiting values 8.5 .. 12.6 V (powered via input, return-path mode). Built-in surge protection is provided. Current
loading given in table excludes consumption of remote infrared receivers.
Technical data
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