Pagina 87 - TELE-satellite-1205

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87 —
04-05/2012 —
TELE-satellite International — The World‘s Largest Digital TV Trade Magazine
with its hundreds or poten-
tially thousands of entries,
and there are no favourites
lists, so be prepared to wise-
ly manage your channel list
and stick to the bare essen-
tials – unless you are of the
severely patient kind.
Since it took much less
time than expected to align
our antenna to the two sat-
ellite positions we had some
time to spare, so why not
have a closer look at the
built-in tuner and its thresh-
old capabilities?
We pointed our 60cm an-
tenna towards ASTRA 2D
and tried to catch BBC HD
on transponder 49 (10847 V
23000-8/9 QPSK). According
to ASTRA/SES our location
in Portugal would require an
antenna with at least 120cm
for successful reception.
Nonetheless, we achieved
reliable and stable reception
of BBC HD with only half that
diameter. Quite frankly, we
had no idea how that came
about, but it does speak
volumes about the recep-
tion quality of the Trimax
TM6800+ tuner.
The fourth menu item of
the meter includes a set-
tings editor, which allows to
edit the satellite list, define
DiSEqC parameters and LNB
types for each satellite and
start a channel search on
an entire satellite or a single
In our opinion a channel
search across an entire sat-
ellite should be avoided by
all means, as it is very tire-
some and time-consuming
at a later stage to switch be-
tween channels on a list that
boasts hundreds or thou-
sands of entries, but no fa-
vourites options (see above).
What does make sense is
saving one free-to-air chan-
nel per polarisation level and
satellite, so that you can
quickly and easily verify if
your antenna alignment is
While such a settings list
can of course be compiled
on the meter itself, it is a job
that takes some time and ef-
fort. Luckily, there is an eas-
ier way: On its website www. the manufac-
turer provides the ‘Satellite
list edit tools for TM6xxx se-
ries Meter/Finder.rar’ file via
its Download Center.
What you get is a settings
editor, which at this stage
only comes with an installa-
tion wizard in Chinese. But
rest assured, all you need to
do is click the right button
during the installation pro-
1. Main menu of the TM6800+.
2. Spectrum analyzer: The marker was moved to 11914 MHz and the
signal was locked automatically after one second. An FEC of 9/0
was identified.
3. The spectrum can be moved vertically with the ‘Up’ and ‘Down’
4. In the spectrum a signal scan can be initiated from the frequency
selected with the marker.
5. Constellation diagram with additional signal information. An
8PSK modulation can be seen here.
6. With the ‘SAT finder’ function it is possible to quickly align an
antenna. Thanks to the NIT function the satellite name is extracted
from the NIT stream.
7. SAT finder: Signal strength peaks, signal quality doesn’t: This
is a clear indication that the antenna is aligned towards the wrong
satellite since the transponder data don’t match.
8. Automatic search: The Trimax TM6800+ is a fast performer.
9. List of default satellites which can be edited as required.
10. Satellite configuration. DiSEqC 1.0/1.1/1.2 protocols are
11. DiSEqC 1.2 menu: It is possible to rotate the antenna, set limits
and save the current position.
12. Automatic scan of an entire satellite.
13. Search progress. Only pre-stored transponders are scanned
and there is no blind scan function.
14. Angle calculator: Based on the current position the Trimax
TM6800+ is able to determine the correct angle values.
15. Saved constellation diagrams: All measured parameters can be
saved for future documentation.