General Safety Precautions
To Prevent Overheating
The recom mended clearences and othe r precautions give n in this instructio n section of these
instructions must be observ ed to p revent overheating. I n addition, the uni ts should not be fixed where
they are likely to become smothered by curtains or othe r fabrics, etc, or other thermal inssullation
materials in a roof space or sim ilar buildin g void. Th e unit should not be left resting on a carpet.
Other Precautions
These appli ances are not waterpro of. They are for in door use onl y and must no t be fixed where they
could be exposed to drippin g or sp lashing water. Ob jects containg liq uids should not be placed o n or
near the appliance.
To preve nt risk of fire , no object wi th a naked f lame should be plac ed on or near the applianc es or the
wiring to them.
Fitted Mains Plug
These ap pliances are s upplied with a standard fixed plug al ready fitted. If this is not s uitable, refer to the
instructioo ns below. In t he unlikely event that you need to ch ange the fuse in this plug, 1 3Amp fuse to
BS1362 ca rrying the ASTA or BSI approved mark must be used. Always re-fit the plastic fuse ca rrier when
replacing the fuse.
Changing t
If the fitted mains plug is no t suitable for the socke t outlet in use, it should be cu t off and an appropr iate
new plug fitted.
Wiring a N
Any instruction supplied wit h the plug should be followed(th ese may state how m uch insullation to
remove from the wires in the mains cord). The Bro wn wire must be co nnec ted to the live (L) terminal o f
the plug and the Blue wire to the neutral (N) terminal. Nei ther wire should be connec ted to the earth (E)
terminal of a 3-pin p lug(this appliance does not require an earth connec tion). Ensure that the cord g rip
in the plu g is correctly used and clamps the sheath of the cord firmly.
Fuse Rating: If the new plug is a fused type, the fus e fitted should be rated at no more than 3 Amp.
Caut ion: The old plug should be d estroyed promp tly since it would b e dangerous if plugged into the li ve
socket.
h
e Plug
ew Plug
These ful ly screened gene ral-purpo se 4, 6 and 8 wa y amplifiers are ide al for distribut ing TV and
FM DAB radio sign als. Separate inputs for UHF TV (470- 862 MHz)and for FM DAB. The FM D AB
operating for the standard unit UK market is 88-230 MHz. Versio ns are also availabe with VHF
frequency range 40-270 MHz– specify by a dding suff ix EIR to the product code.
The 6 and 8 –w ay versio ns feature a higher gain “FULL” out put. This may be used in conjuct ion
with addi tional passive acces sories(taps and splitters ) to allow addi tional outputs to b e fed.
All units are sui table for handling d igital terrestrial TV (DTT) signa ls in addit ion to t he analogue
services. Dis tribution of DTT sign als requires c areful attention to signal levels for satisfactory
results.
Applicatio ns
Using t he “FULL” ouput
The “FULL” output allows additional points to be fed without the need for another am plifier.
The diagrams below and overleaf show two typical exa mples of how La bgear taps can be used
to provide ano ther 8 or 16 out puts. NB the taps in these examples have f-typ e connectors.
Installation Instuctions
2 –Year Gu arantee
From the date of purchase. This guarantee does not cover accidental or mallcoius dam age (Includin g
damage from natural causes such as lightening) and will be invalidated by inst allation or use ot her than
in accordance with these in str uctions, repa ir or attempted repa ir other than by the m anufacturer, or open
or removal of the case. Th is does affect yo ur statutory rights.
Labgear Reserve the right to modify th eir designs o r specifications, In thelig ht of
future de velopments, w ithout prio r notice.Performance figures quo ted are typical
and subject to normal manufacturing a nd service tolerances
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LABGE
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Installation
Important note: attention is drawn to the General Safety Precautions Panel on page 4 which contains
advise refering to safe installation and operation of these products.
Location
Choose a location for the amplifier from which it is convenient to run cables from the antennas and to the
system outlets. Typical examples of suitable locations are a loft space or a cupboard. In weak signal areas it
is helpful to keep the antenna cables as short as practicable.
Select a cool, dry location to install the amplifier. This meansa location where the ambient temperature will
remain between -10°C and +40°C, and which is free from risk of dripping or splashing water.etc.
The fixing location should allow adequate access to the equipment for wiring and maintenance. Clearence
of at least 25mm should be allowed around the top and left hand side of the unit for ventilation.More
clearance will be needed under and the right of the amplifier to allow access for cables.
Fixing
The amplifier should be be fixed to a wall or other suitablehard surface, using suitable screws and masonary
plugs(not supplied). The amplifier should not be left supported by its own wiring, nor should it be left
resting on a carpet or other insulating and/or inflammable surfaces.
Electricity Supply
Fixed wiring and connection of the electrical supply to these products should be carried out in accordance
with BS7671 (IEE Wiring Regulations) .
Each amplifier is supplied with afitted 13A mains plug. If this is not suitable, see General Safety Precautions
Panel on page 4.
As an alternative to the use of plug and socket connection, the amplifier may be connected to the supply
using a switched fused connection unit BS 1363-4. A 3 Amp fuse to BS 1362 should be fitted in the fused
connection unit.
If the power unit is connected to the supply other than by means of its fitted fused plug or a fused
connection unit, It must be protected by a non-time delayed fuse or a type B MCB at the distribution board
of rating not exceeding 6A. An isolating switch should be provided near to the unit to allow it to be
disconnected from the supply when necessary.
Signal Connections
Input and output signal connections are made using ‘IEC’ (IEC 60169-2) connectors. Good quality plugs
should be used, preferably of the crimp on type. Attention is drawn to the need to maintain DC continuity
throughout the system for correct operation of infra-red remote control functions (MSA d range only).
The ”FULL” output must always be terminated in a well matched 75Ω load. A 75Ω terminator is supplied.
Use with a UHF preamplifier
In weak UHF signal areas, or where a long cale downlead cable is
required, it may be desirable to use a masthead preamplifier mounted
close to the UHF antenna. These multi-way amplifiers feature a built-in
12V line powering on the UHF input; ther is no need to use a separate
power unit for the masthead amplifier.
The built-in line power is rated at 25mA (fully short curcuit-proof) and is
compatible with the majority of Labgear masthead preamplifiers. The
masthead gain should be keep to a minimum and genarally only needs
to exceed the downlead cable loss by about 6dB. A single stage
12…15dB gain masthead will be suitable for the great majority of
applications. Use of excessive amounts of gain will lead to severe crossmodulation and intermodution problems.
Model Number MSA242 MSA262 MSA282
Number of Outputs 4 6+1 8+1 +1 indicates “FULL” output
Gain to numbered outputs 8dB 8dB 8dB
Gain to full output 18dB 18dB
Noise figure 4dB 4dB 4dB
Output capability from 96dBμV 85dBμV 85dBμV
numbered outputs
Output capability from 99dBμV 99dBμV Must be terminated in
75Ω
FULL output
FM DAB 88-230 MHZ
VHF EIR version 40-270 MHz
Line power 25mA with auto shut down
Power requirements 230V AC 50Hz@ at <7VA Supplied and fitted Mains Plug to BS 1363
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