TELE-audiovision - The World’s Largest Digital TV Trade Magazine - page 32

TELE-audiovision International — The World‘s Largest Digital TV Trade Magazine
— 09-10/2013
7. Without any detours you end
up in the constellation diagram.
Here Deviser utilizes the high-
resolution display and provides
an excellent method to diagnose
problems caused by faulty com-
8. Next is the Spectrum Analy-
zer mode. First of all we liked
that the spectrum can be dis-
played with a 1200 MHz span
in real time. Real time simply
means that the spectrum dis-
play is renewed multiple times
per second. In this way you can
instantly recognize how, for
example, an antenna needs to be
adjusted to receive the best pos-
sible signal. And just the high-
resolution of the spectrum itself
is a plus point – closely spaced
narrow-bandwidth transponders
are clearly resolved.
9. The representation of the
spectrum can be switched using
the DISPLAY function button
located in the second row of
function buttons. Instead of dis-
playing the spectrum as a single
line, it can also be shown with
the area below the line filled in.
10. Push the DISPLAY button a
second time and the spectrum
is then shown as a waterfall
diagram. You can easily follow
transponders over a period of
time and since it‘s possible to
send out DiSEqC 1.2 commands
while in this mode, aligning
motorized antennas becomes
easy as pie. If you want to learn
more about how to use waterfall
diagrams you may read my artic-
les in TELE-audiovision issues
12-01/2012 and 02-03/2012.
11. That Deviser actually put
some thought into this and didn‘t
simply implement the waterfall
diagram carelessly can be seen
when the DISPLAY function
button is pressed again. Just
as can be seen in the demonst-
ration software, the spectrum is
now displayed in parallel to the
waterfall diagram. In this way
you can clearly recognize the
transponders in the spectrum
and measure the levels using
the obligatory markers (availa-
ble in all display modes) while
the waterfall simultaneously
documents the evolution of
the signal. The otherwise stan-
dard peak-hold function (that,
of course, is also available) will
now only seldom be used thanks
to the waterfall diagram.
12. If the function button labe-
led DRIVE is pressed, the up/
down buttons can then be used
to switch between the DiSEqC
1.2 modes MOVE and STEP whe-
reby the left/right buttons move
the motor correspondingly.
The spectrum is still displayed
in real-time and thanks to the
waterfall diagram it‘s easy to
obtain the best possible align-
ment. Aside from that, you can
also see how many and which
satellites can be received bet-
ween the east and west limits
of the antenna. You simply drive
the antenna from east to west (or
vice versa) and using the water-
fall diagram you can clearly
recognize each satellite and with
a little experience you’ll also be
able to identify them.
13. The S7000 supports a variety
of DiSEqC and single cable SCR
standards with a single DiSEqC
menu. These can be selected in
the Main menu or at any other
time using the function buttons.
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