The SM2500 model has a
spectrum analyzer!
With the advent of digital television,
installing a satellite dish is not what it
used to be. Gone are the days when you could
use a small monitor and an analog receiver
to find your signals.
Today, the most common method to find a
satellite signal is to use a digital
receiver's built in signal meter.
Although this technique may be suitable
for the occasional installer, it should
not be considered as a way to get the
job done by a professional installer or an
advanced hobbyist.
A receiver's built in signal meter will
let you get the job done right when it
works. In the real world, this meter often
does not react like it should or like you
would want it to. In addition, problems such
as a bad cable connection or a defective
LNBF can not be diagnosed with a satellite
receiver.
You may therefore spend hours with a
problem that does not have to do with the
alignment of the dish, when the right tool
could get the job done in five minutes.
Finally, if you install more than one
kind of digital satellite system, including
C-Band systems, you know that most "tricks"
that can get the job done with one system,
become useless when it comes to finding the
signal from a different kind of system.
A spectrum analyzer puts all these
problems behind. A spectrum analyzer
will give you an edge, when it comes to
getting the job done right - every time and
on the first try.
Using a spectrum analyzer allows you
to:
- Save time (money) on every
installation.
- Install any kind of system - 18",
24", 30", 36", 39" and C-Band.
- Eliminate cross-polarity
interference on linear systems.
- Not have to keep a spare satellite
receiver for the field.
- Not have to use a portable
television on the field.
- Get the absolute most signal out of
every dish you install.
- Keep your customer's receiver
sealed until you are ready to hook
it up in the living room.
- Diagnose all types of problems
related to satellite signal distribution
(LNBF, polarity switching, cable
attenuation, 22Khz and DiSEqC switching,
etc.).
If you are a professional installer, this
instrument is 100% tax deductible!
By the same token, the improved
performance you will provide to the systems
you install, will help keep your customers
happy.
Overview
 All
LNBs and LNBFs, in C, Ku and S band have
an intermediate frequency output of 950
to 1450, 1750, 1950 or 2150 Mhz. A
spectrum analyzer lets you visualize the
entire output of an LNB or LNBF. The
"normal view" mode of the analyzer
allows you to identify a satellite by
looking at its distinctive pattern.
The "expanded view" mode(s) of the
analyzer allows you to determine such
measurements as the carrier-to-noise
ratio, the carrier level and the LNB
gain.
When it comes to digital television,
a spectrum analyzer also allows you to
visualize and eliminate the extremely
important effects of cross polarization
interference.
When equipped with a portable test
receiver you are also able to watch all
analog services available (in C or Ku
band) - extremely useful when performing
a C-band installation.
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