Some channels display 'Poor/No Signal' 'Check Antenna
Connection'
Received signal is 'too weak' (i.e.; poor quality) to generate a stable picture
The received signal may be too weak to allow the digital TV receiver to
reliably 'lock' to the desired signal and generate a stable picture.
'Impulse Noise' interference from household appliances such as lights,
refrigerators, washing machines, electric stoves etc may cause pictures to
break up and audio to mute or distort momentarily
A masthead amplifier may be 'over-boosting' the antenna signal, which is
overloading the DTV tuner, resulting in poor reception on some or all
channels.
Electrical atmospheric interference caused by local or distant lighting
storms or heavy rain with wind in 'leafy' locations may cause pictures to
break up and audio to mute or distort momentarily.
Impulse noise interference from an infrequently used electrical appliance,
Or a passing Vehicle or lawn mower with a 'noisy' ignition system
Please check antenna & cabling or contact your local TV antenna installer.
Please check antenna & cabling or contact your local TV antenna installer.
In the first instance, replace antenna fly-lead with a quality RG 6orRG59 Quad Shield
75 ohm coaxial cable fly lead. If problem persists, check / improve antenna & cabling
or contact your local TV antenna installer.
Please contact your local TV antenna installer.
Picture regularly breaks up on some channels
Picture very infrequently breaks up on some or all channels
For further DTV reception trouble shooting information please visit the Digital
Broadcasting Australia (DBA)website: www.dba.org.au
33
Reception Trouble Shooting Guide
Specifications
Section
Detailed section
Explanation
Terrestrial Input Signal
Input Frequency
VHF: 174MHzto230MHz
UHF: 520MHzto820MHz
Transmission System
Channel Assignment
Channel Bandwidth
Channel Offset
Input Signal Level
Antenna Input
Loop Output
OFDM Spectrum Mode
Modulation Modes
Guard Interval Modes
SD Video Output
FEC Modes
DVB T/OFDM-
Australian Assignment
7MHz
+/ 125KHz-
--90dBm~ 20dBm
75 Female IEC-Connector (PAL Type)
75 Male IEC-Connector (PAL Type)
2K and 8KHierarchical
QPSK,16QAM,64QAM
1/32, 1/16, 1/8, 1/4Active Symbol Duration
S- Video (Y/C), Composite Video(CVBS)
Rate 1/2, 2/3, 3/4, 5/6, 7/8
Algorithm
MPEG-2 compatible MP@ML, MP@HL
Decoding Format
All of Australia Digital TVStandard
Display Aspect Ratio
Widescreen or PB Zoom
HDMI Output
HD YPbPr Output
Native Mode : 1080i, 720p, 576p
Native Mode : 1080i, 720p, 576p
HD Analog Video
output
HD Digital Video Output
Algorithm
MPEG-1 layers 1 and 2, MPEG-2 layers 2
Dolby Digital (AC-3)
Frequency Response
20Hz~ 20 kHz, <2dB
Sampling Frequency
32, 44.1 and 48kHz
Analog Audio Output
Stereo (RCA phone jack), 2.0Vrms Max,
>10K ohm (1 Sets)
Digital Audio Output
S/PDIF optical(TOS Link), S/PDIF coaxial(RCA)
Audio
Video
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