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www.TELE-satellite.com
—
1 -12/2012 —
TELE-satellite International —
全球发行量最大的数字电视杂志
1.
The HD-T2 is recognized
by Windows via the USB
serial port; the necessary
drivers are automatically
installed
2.
New frequency tables are
always made available in
.
exe format. The user simply
has to start the program and
then click on “Transfer”. In
just a few seconds the files
on the PC are transferred to
the analyzer
3.
The HD-T2 Log Reader
works very simply: just
connect the analyzer to the
PC, start the Log Reader and
then click on “Read”
4.
The data was successfully
transferred
5.
The Logger data stored in
the analyzer is displayed on
a PC in an organized manner
and can easily be exported
T/T2 broadcasting location
is selected directly from the
entire list. For Great Britain,
users can even choose their
reception region by enter-
ing in their local postal code;
it’s a feature that is not yet
available for other regions of
the world.
You might be asking your-
self right now why all of this
work to select a desired
broadcasting region is even
necessary. The answer is ac-
tually quite simple: it saves
you a lot of time and effort!
In addition to a complete fre-
quency scan and a manual
frequency scan, the HD-T2
also has the ability, thanks
to the preprogrammed fre-
quency data, to perform a
quick scan in which only the
active frequencies in a re-
gion are actually read and
processed.
Because of this, an in-
staller won’t need to have
a frequency table with him
during an antenna installa-
tion and can instead rely on
the information stored in his
signal analyzer.
A complete frequency
scan starts at the lower end
of the VHF band and ends
at the upper end of the UHF
band. In manual frequency
scan mode the user simply
needs to select the desired
transmission mode (Analog,
DVB-T or DVB-T2) and then
the desired frequency. A
spectrum overview makes
the selection easier and
identifies with a bar graph
which frequencies at what
signal level in the VHF and
UHF bands are actually ac-
tive and for which it would
make sense to run a scan.
In complete and quick
scan modes, the analyzer
stops automatically at every
active frequency, emits a
short confirmation tone and
begins to analyze the fre-
quencies just identified as
active.
Shortly thereafter, the
name of the broadcaster ap-
pears on the screen (assum-
ing of course if a matching
frequency plan was previ-
ously uploaded into the ana-
lyzer) and shows at the bot-
tom of the display whether
the signal is analog, DVB-T
or DVB-T2.
With the help of the “ON”
button the user can now
page through the various
measurement results which
includes the signal level, sig-
nal quality, the MER (Modu-
lation Error rate), the BER
(
Bit Error Rate) as well as
some basic signal informa-
tion such as the name of the
Mux, the modulation in use,
symbolrate and FEC.
For those less experienced
users, Horizon included a
five-star signal rating fea-
ture where one star rep-
resents the weakest signal
and five stars the strongest
signal. All of these measure-
ment results are, of course,