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12-01/2012 —
TELE-satellite International — The World‘s Largest Digital TV Trade Magazine
and then switch the S20 to
spectrum view. Now rotate
and tilt your dish gently un-
til you see signal peaks on
the spectrum.
When in spectrum view,
you can change the span
(80, 160, 320 MHz and Full
band) and you can also
move the cursor to the left
and right. But that’s not all.
If you position the cursor
on a transponder and press
OK, S20 will measure this
transponder. That’s a great
advantage of this meter.
When you managed to
set your dish well enough
to produce peaks on the
spectrum screen, chances
are you have found your
satellite but how can you
be sure? Well, you simply
return to the signal search
screen that the S20 shows
when powered on. You
switch satellites left and
right until you find the only
one at which S20 locks.
Even if this is not the one
you wanted to receive, you
will know the longitude of
the satellite you have just
turned your dish at. In this
way, you will also know
whether to rotate your an-
tenna more to the East or
to the West in search of the
desired satellite.
Once you are receiv-
ing the right satellite, we
suggest to switch to the
transponder measurement
screen, where more pa-
rameters are shown. Now
observe the SNR reading
when adjusting your dish
and LNB tilt. Maximize
its value. And that’s it.
Tighten the screws care-
fully to avoid unintentional
shift. Your dish is perfectly
aligned.
Antenna alignment with
the S20 from Deviser is
really an easy task. But
how accurate is the meter?
We decided to compare it
with two signal analyzers
of different brands. The
S20 measurement results
where quite close to the
readings of its competitors.
The meter had a problem in
locking to one DVB-S2 tran-
sponder (TP2 in our graphs)
but at the same time the
other meters where com-
pletely unable to lock to
the signals the S20 pro-
cessed without any trouble!
These were the transpond-
ers of lower symbol rates
(around 10 Ms/sec and 2.5
Ms/sec). So, in real life, al-
most every meter can have
a problem with locking to
this or that signal. The S20
was quite at par with much
more complex and much
more expensive meters if
we compare the ability to
lock and measure different
transponders.
Of course, everybody is
aware that the S20 can not
play the video in full color
or audio of a TV channel or
take more advanced meas-
urements. But the S20 of-
fers everything you need
to to set up a dish in a fast
and easy way. It is usable
both in Ku-Band and C-
band as you can freely de-
fine values for single and
dual frequency local oscil-
lators (LOFs).
What’s more, during our
tests Deviser released
a new software version
(1.06B) which now even
includes DiSEqC settings.
First of all, DiSEqc 1.0 and
1.1 were added in a sepa-
rate menu item. The con-
tent of this menu item is
very simple. The first line
lets you choose which DiS-
EqC protocol you need: 1.0
or 1.1. The second line is
for choosing the input of a
DiSEqC switch. For DiSEqC
1.0 the possibilities are
from 1 through 4 and for
DiSEqC 1.1 from 1 through
16. The third line lets you
send the command to the
switch. You could not in-
vent it any simpler. For the
Download this report in
German
www.TELE-satellite.com/
TELE-satellite-1201/
deu
/deviser.pdf
majority of reception sys-
tems that use a single DiS-
EqC 1.0 switch or DiSEqC
1.1 switch, the features of
Deviser’s S20 will be abso-
lutely sufficient.
The software included
in the package is a rather
basic transponder editor. It
allows you to change sat-
ellite name and position
and to define 6 transpond-
ers for every satellite. The
number of satellites is lim-
ited to 16 what should be
sufficient for most install-
ers. If you prefer, you can
also edit the parameters
directly in the setup menu
using the S20 buttons. But
of course it is faster and
more convenient to do that
on your PC.
When installing the PC
software we encountered
an error. The Deviser in-
staller informed us that
one DLL file was missing in
our Windows XP system. To
successfully finish the in-
stallation, we had to look
for the missing file on the
Internet, download it and
save it in the Windows\sys-
tem32 folder.
In our test sample, the
satellite list along with the
corresponding transponder
parameters was suitable
for Asia rather than Europe.
For the purpose of the test,
we changed two satellites
to European ones. To do
that, we needed to refer to
a transponder list (www.
satbeams.com).
Not every transponder
of a given satellite is re-
ceivable in your location
due to various footprints,
so be sure to only put into
the S20 transponder list
the ones receivable in your
area. Actually, Deviser will
of course customize the
satellite/transponder list
once the S20 is sold in dif-
ferent parts of the world.
The S20 is a great little
meter ideally suited to fast-
ly install dishes. Once all
satellite and transponders
are set in its memory, the
built-in spectrum greatly
helps to identify the satel-
lite. The calculator makes
it easy to pre-install the
dish into the approximate
direction. It’s great design
makes the S20 a valuable
assistant to the dish in-
staller.