Xoro HTC 1927D - Handbuch (Seite 106)

44 HTC 1927D
Engl
ish
DVB-T
Picture Quality
Die picture quality by DVB-T depends on the different areas and the different conditions.
Some parameters are important for the picture quality, the bit rates, the resolution and the
reception of the transmitted DVB-T signals.
Bit rate
The bit rates is fixed by the TV broadcaster and can be different between each TV program.
Also the different TV broadcaster define the bit rate different to each others. If you see by
watching DVB-T strong mosaics structures, artefacts or an un sharp picture, than you can try
to increase the Signal strength and Signal quality by searching a better position of the indoor
aerial. Maybe you can try also to change a passive indoor aerial to an active indoor aerial.
But, if you can realizes optimal condition by receiving the DVB-T signals and you have any-
more the artefacts or mosaics structures, than is the transmitted bit rates to low.
In Germany the values are very different by the bit rates:
ZDF
2700 until 4500 kbps
ARD 2000 until 4500 kbps
HR 1800 until 3500 kbps
Private TV Stations 1800 until 2700 kbps
If the bit rate is higher, than the picture quality is mostly better and the picture is more than
less by artefacts or mosaic structures.
Resolution
The second influence by the picture quality is the transmitted resolution. If the resolution is
higher than you can see a more sharper picture. For example:
ARD / ZDF
720x576 or 704x576 (that’s PAL Full D1 resolution)
Other 544x576or 528x576
Receiving Condition
If you see by the information Signal strength and Signal quality some low values, you can try
to find another antenna position to increases the reception quality. Visible indicators for a
worst reception of the DVB-T signals is for example the a freeze picture or the message “No
Signal”.
The reception quality depends for example on the kind of the antenna. Three different kind
of antenna are available, the passive and active indoor aerial and the roof antenna. Realign
your indoor aerial in this way, that you get the best reception as possible. Helpfully it to know
in which direction are the public antenna power and than you can adjust the antenna to this
direction.
If a passive indoor aerial can not receive the DVB-T signal strong enough, please try an
active indoor aerial. The best reception results are by the roof antenna possible.