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Installation Instructions
Tilt
Function
Fixing methods
Mount the amplifier on a vertical section of the mast below the antenna using the built-in mast clamp
shown above.
The amplifier will not be affected by proximity to the antenna, but reasonable clearance - about 300mm
- should be maintained to avoid disturbing the antennas performance. Otherwise for minimum sigal loss
mount as close to the antenna as possible.
Signal connections
Type-f connectors provide a reliable low-cost method of connection with excellent screening integrity and
impedance match. Select the appropriate male connectors to fit the cable type used.
This method of connection is superior in all respects to saddle-and-clamp types that it replaces.
Good quality double screened coaxial cable to EN50117-2 should be used, ideally in conjunction with high
quality crimp on connectors.
Connectors should be properly fitted in accordance with the manufacturer's instructions, using a suitable
crimping tool.
For easy connection the amplifier module tilts by 45˚ making it easier to screw on your F connectors.
F connectors should always be tightened very gently with a spanner. Leaving them finger tight can result
in unwanted signal ingress or leakage, as well as suck-outs in the frequency response.
After making your connections ensure that all cables are aligned with the slots in the housing before gently
closing the housing. Make sure the locking catch on the rght is closed securely
2
Locking Catch
Mast Clamp
Installation Instructions
Connecting to a power supply unit (PSU)
We recommend that you use a PSUF - 12V 100mA power supply with Type-F connections.
However alternative 12V power supplies can be used providing they supply enough current, see the
specification table below for current requirements for each amplifier. Read carefully the instructions that
come with your PSU before installation.
The PSU should ideally be fixed to a wall, skirting board, mounting board or similar hard surface.
A ventilation gap of at least 25mm should be left around the front and sides of a PSU.
Do not leave the power unit resting on a carpet.
Do not install the power unit where it may become smothered by curtains or other fabrics.
If you are installing the power unit in a roof space ensure that it is not covered by thermal insulation
materials.
Signal connections are made to the coaxial sockets on the right-hand side of the power unit. Good quality
coaxial cable to EN50117-2 must be used. Labgear recommend the use of CAI "benched marked" cable.
•
The down lead from the masthead amplifier must be connected to the socket marked 'IN' .
•
The signal output from the socket marked 'TV' is connected to the receiving installation
(satellite receiver, VCR, TV, etc.) or to the input of the cabled distribution system
Connections
Connection to the PSU are usually made using type-f (male) connectors.
The use of high quality crimp connectors is preferred.
F type connectors should always be tightened very gently with a spanner. Leaving them finger tight may
result in unwanted signal ingress or leakage, as well as suck-outs in the frequency response, alternatively
do not over tighten as this could damage your PSU.
General Safety Notes
To avoid risk of electric shock during installation we recommend that the power unit and all associated TV
receivers, etc. are isolated from the mains until the installation is complete.
Fixed wiring for electrical supply to these products should be carried out in accordance with BS7671 (IEE
Wiring Regulations).
Distribution systems supplying signals to more than one household should comply with the safety
requirements of BS EN50083-1. This requires the system to be earth bonded or the use of isolated outlets.
Specifications
No of Inputs
No of Outputs
Frequency Range
UHF Gain per port
Max Out put level (IMA3-60dB). EN50083-5
Noise Figure
Isolation Out/Out
Power Input Required
Dimensions
.
LMA113F
LMA209F
1
1
2
UHF: 470-790MHz
13dB
9dB
>92dBµv
>88dBµv
>1.7dB
>1.7dB
-
15dB
12VDC
30-35mA
140 x 96 x 55mm
140 x 96 x 55mm
3
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