Wiring Coax Plugs and Coax Outlets
You will need to fit coax plugs to the aerial lead and to each of the leads
running to TV outlets so that they can be connected to the aerial amplifier.
1. Unscrew coax plug housing and slide cap over cable.
2. Strip 23mm of cable outer sheath. Gather copper braid, wrap around
outer sheath, slide claw over braid and crimp.
3. Strip 18mm of inner insulation to leave 5mm exposed.
4. Undo screw on plug/clamp, slide clamp over inner wire & tighten screw.
5. Reassemble plug and trim inner wire flush with plug.
Next run the cables from the amplifier to the surface outlet positions, if drilling
through walls be careful to avoid pipes and other cables. Use the cable clips
supplied to secure cables.Wire the surface outlets as shown below and use
the screws supplied to fix to a suitable surface such as a skirting board.
1. Strip 24mm of the outer sheath, pull back braid and tear off or cut off foil.
2. Twist braid together and wrap around inner insulation as shown, strip
12mm from inner insulation to expose central conductor.
3. Loosen terminal and saddle clamp screws and insert cable as shown in
Fig. 3.Tighten all screws and trim away any loose strands of braid.
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Wiring Coax Plugs and Coax Outlets
Troubleshooting
Digital terrestrial signals blocking/freezing and/or loss of digital picture and sound can be caused by
insufficient digital signal and carrier to noise ratio.
Similarly blocking and even a completely blank screen with no sound can result if the input signal to
the set top box is too high. The digital cliff refers to the rapid change from the picture and sound being
perfect, to disappearing altogether.
For specific help with DTT reception problems,
log onto *www.digitaluk.co.uk/
No picture: Check all connections from aerial to TV.
Poor picture: Check all connections from aerial to TV.
Check aerial is properly aligned to the correct transmitter.
If the aerial has been loft mounted try mounting outside.
Make sure new digital coax cable has been used throughout the installation.
Check the transmitter signal is not obstructed by nearby trees or buildings.
If in a very weak signal area or for long cable runs, installing a masthead amplifier will improve the
signal.
If in a strong signal area the signal strength may need to be reduced by fitting an attenuator.
Intermittent Picture: Make sure all RF cable to connector joints are tight (both inner and outer)
including all flyleads and surface outlet connections.
