Panasonic VIERA TH-L42U20A Operating Instructions Manual page 56

FAQs
Problem
Note: Digital TV reception is only as good as the antenna and the antenna cabling delivering the DTV
signals to the television. Reliable digital TV reception requires high quality, robust DTV signals which can
only be achieved when using a TV antenna and cabling designed for digital TV reception.
●
Further reading please visit: http://www.digitalready.gov.au/publications.aspx where you can download
'The Digital TV Antenna Systems for Homes Handbook' information pdf file.
●
For your safety, the antenna and cabling should be inspected / installed by a licenced installer that should
comply with Australian Standard AS1417.1 for Domestic installations or AS1367 for MATV installations.
Connecting devices
such as DTV recorder
/ PVR / VCR etc
that also require an
antenna connection to
the digital television
After digital TV tuning,
(or re-tuning) some or
all DTV channels are
missing
Picture regularly
pixelates on some
channels, or
'No Signal' message
Picture infrequently
pixelates on some or
all channels
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TH-L42U20A_EN.indd 56 TH-L42U20A_EN.indd 56
●
To maintain optimum antenna signal quality, use an 'F' type TV
signal splitter (as illustrated) when connecting two or more devices
to the same antenna socket.
TV
RG6Q Fly Lead
DTV Recorder /
PVR / VCR
RG6Q Fly Lead
●
Hint: Some degradation of the DTV signal may occur if you
are connecting the aerial through an external device (e.g. DVD
Recorder or Set Top Box). In this case it is better to use a splitter
and connect the aerial directly to both devices.
●
Check to ensure your area is covered by DTV transmissions.
●
Check that the aerial and antenna cable are designed for DTV reception.
If you live within 5-10 Km of DTV transmission towers, a combined VHF
/ UHF Digital TV aerial should be adequate. Outside this area, separate
VHF and UHF aerials provide superior reception performance.
●
If you live in a unit or apartment, check to ensure the Master Antenna
TV (MATV) system is designed for analogue and DTV reception. Please
consult your body corporate.
●
Check "Signal Condition" via TV Setup menu. If "Signal Quality" or "Signal
Strength" are red/orange or constantly changing, check aerial/cable/
connections. If problem persists consult your local TV antenna installer.
●
Too much signal; is "Signal Strength" always at full strength? If yes, try
attenuating (reducing) the signal strength
●
Check that the aerial and antenna cable are designed for DTV reception.
●
The received signal may be too weak to allow the TV to reliably lock to
the selected channel to generate a viewable picture. If problem persists
consult your local TV aerial installer.
●
Interference from household appliances (known as impulse noise) such
as light switches, fridges etc may cause picture break up and / or audio
distortion. Use high quality quad shielded coaxial cable (RG6Q) fly lead
between TV and antenna wall socket to minimise impulse noise pickup. If
problem persists consult your local TV aerial installer.
●
Antenna installation may be using an aerial amplifier that is faulty or an
older style aerial amplifier that was not designed for digital TV.
●
Older style antenna cabling, loose fitting/corroded wall socket
connections/terminals etc.
●
Electrical interference caused by local or distant lighting storms, heavy
rain, high wind etc may cause picture to break up and or audio to mute/
distort momentarily.
●
Impulse noise interference from an infrequently used electrical appliance,
or a passing vehicle or lawn mower with a "noisy" ignition system.
●
Older style antenna cabling, loose fitting/corroded wall socket
connections/terminals etc.
Actions
'F' type
Antenna Splitter
Out
RG6Q Fly Lead
in
Antenna Socket
Wall Plate
4/2/2010 2:03:35 PM 4/2/2010 2:03:35 PM