Spectrum Display - Horizon Fitness HD-S2 User Manual

Spectrum Display

Spectrum mode is available from the Sub-menu (press the UP arrow while the signal level or carrier/noise
display is on screen). Scroll down to highlight "Spectrum", and press the RIGHT arrow. The screen will change
to display the spectrum.
The graphic will be centred on the frequency of the selected transponder: in our example of a Low Band setting,
the display is centred on 11840MHz. The span (range of frequencies displayed on screen) is set by default to
240MHz; which gives a display of 8 adjacent carriers at 30MHz spacing. By pressing the DOWN button, you can
cycle through a range of spans from 60MHz (to zoom in on one carrier in particular) to 1200MHz.
Centre the chosen frequency on the display by pressing the LEFT and RIGHT buttons. Note that you will not be
able to go beyond the limits for each band, which are indicated by arrows pointing right (lowest frequency) or left
(highest). Note that the Low Band coverage extends from 10700MHz to 11600Mhz, and the High Band from
11550MHz to 12750MHz, so there is some overlap between the Low and High Band for Universal LNB's.
RF level is shown by a solid band at each sampled frequency (see image). There will be areas of low-level
signal between the carriers, and the bigger the distance between peaks and valleys, the better the carrier-to-
noise ratio. Good C/N ratio is important for trouble-free reception!
The top line of the screen alternates between "Centre" plus the selected frequency (shown at the dotted vertical
line in the centre of the display) and "Span" plus the frequency span in MHz. In "Span" view, the polarization of
the carrier (H)orizontal or (V)ertical is shown. If High Band is in use, and 22KHz is enabled, the tone symbol
will appear next to the Polarity.
Centre 11576MHz
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The Spectrum information bar at the top of this screen will alternate between the current frequency, span and RF.
Note: You can exit spectrum mode at any time by pressing the UP button once. This will return you to the
searching screen on the selection that you made previously.
In low signal level conditions use the
Tip: If you have defined a custom carrier you can view it in spectrum mode too (see Customize on page 12).
RF 60.7dBuV
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► Spectrum
Span 240MHz
may be seen.
V
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