Spectrum Mode - Kathrein MSK 115/S2 Betriebsanleitung

SPECTRUM MODE

You can enter spectrum mode via the sub-menu (should be press the
Carrier-to-noise ratio is shown on the display). Switch to the "Spectrum" line and press the
screen displays the spectrum.
C
For more
The display is centred on the frequency of the selected transponder (on 10728 MHz in the example of the
low band setting shown). The "Span" frequency display range (the frequency range displayed on the screen)
is set to 240 MHz as standard, allowing 8 adjoining carriers with 30 MHz spacing to be shown. Pressing
the 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 and buttons to centre the selected frequency on the display. When so doing, take care not to
exceed the limit of 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 10700 MHz to 11900 MHz and the high band the range
from 11550 MHz to 12750 MHz, meaning that the low band and the high band for universal LNBs overlap
somewhat.
The RF level is shown by a bar at each frequency that is sampled (see diagram). There are areas between
the carriers in which there are low-level signals, and the larger the distance between peaks and troughs 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 toggled 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 the high band is selected, the 22 KHz tone symbol
alongside the polarity.
Centre
Note: You can exit spectrum mode at any time by pressing the
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.
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OPERATING MENU
If you select the menu item „Spectrum", the reference level at
the upper end of the scale is 99 dBμV
If you select the menu item „Spectrum O", the reference level at
the upper end of the scale is 79 dBμV
The spectrum
information bar at the
top edge of this screen
toggles between the
current frequency and
the span that is being
used.
button whilst the signal level or the
button once. The instrument then reverts
button. The
appears