Spectrum Mode - Kathrein MSK 115 Betriebsanleitung

SPECTRUM MODE

Spectrum mode can be entered via the sub-menu (press the UP button until the signal level or the
Carrier-to-noise ratio is shown on the display). Switch to the "Spectrum" line and press the RIGHT button.
The screen switches over and displays the spectrum.
The display is centred on the frequency of the selected transponder (in the example shown, the Low Band
is set to 10728 MHz). The "Span" frequency display range (the frequency range displayed on the screen) is
set as standard to 240 MHz, allowing 8 adjoining carriers with 30 MHz spacing to be shown. Pressing the
DOWN button allows the span to be selected as a value between 60 MHz (especially for zooming in on a
carrier) to 1200 MHz.
Use the LEFT and RIGHT buttons to centre the selected frequency on the display. Please note that you will
not be able to go beyont the limits for each band. These limits are marked with an arrow to the right (lower
limit) and to the left (upper limit). The Low Band covers the range from 10,700 MHz to 11,600 MHz and the
High Band the range from 11,550 MHz to 12,750 MHz, so that the Low Band and the High Band for universal
LNB overlap somewhat.
The RF level is shown by a bar at each sampled frequency (see diagram). There are areas between the
carriers in which there are low-level signals, and the larger the distance between peaks and valleys the
better the carrier-to-noise ratio. A good carrier-to-noise ratio is important for fault-free reception!
The top line of the display can be switched between "Centre" with the selected frequency (displayed on
the dotted vertical line in the middle of the display) and "Span" in MHz. In the "Span" view, the polarisation
of the carrier is shown as (H)orizontal or (V)ertical.
If High Band is selected, the 22 KHz tone symbol appears
Note:
You can exit spectrum mode at any time by pressing the UP button once. The instrument
then reverts to the search display for the previous selection.
Tip:
If you have defi ned your own carrier, it too can be viewed in spectrum mode.
OPERATING MENU
The spectrum
information bar at the
top of this screen will
alternate between the
current frequency and
span in use.
alongside the polarity.
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