System information

29
USING THE OTHER MENUS
TYPES OF SCAN
Each of the types of scan described below scans
only one satellite at a time. If your system can
receive channels from more than one satellite, you
must select and scan each satellite in turn.
If you carry out a network scan you need to
understand the technical details of what you wish
to scan for, so you may need to consult a magazine
that gives this kind of information.
Fast scan
This uses default transponder values for faster results.
NIT scan
This uses a Network Information Table to scan all
of the satellite’s transponders that are included
in the NIT. For a NIT scan, information about one
transponder (frequency, polarisation and symbol
rate) is needed and the other transponders are
scanned automatically.
This scan nds all the available TV and radio
channels and puts them on their respective channel
lists, starting at number 100.
Exhaustive scan
This searches for all channels on the satellite and
may take up to 20 minutes.
Frequency scan
This is a very specic scan, which searches just a
single transponder for all the TV and radio channels
transmitted by that transponder. You must set the
frequency, polarisation and symbol rate for the
transponder you want.
CARRYING OUT A NETWORK SCAN
To scan for channels, press the MENU button to
display the Main menu (see page 23).
Use D to highlight ‘Channels’, press OK, then
highlight ‘Channel search’ and press OK.
The Scan satellite screen appears, with the type of
scan highlighted in yellow.
Press the L R buttons until the type of scan
you want (Fast scan, NIT scan, Exhaustive or
Frequency) is displayed.
If you have a dish positioner, you can select the
satellite you want. Use the U D buttons to
highlight the Satellite setting, then press the L R
buttons until the one you want to scan is displayed.
To change any of the Frequencies or Symbol
rates, rst use the U D buttons to highlight the
one you want to edit. Then use the L R buttons to
underline each digit, and the number buttons to
enter digits.
To change a highlighted Polarisation, use the
L R buttons until the polarisation you want is
displayed.
To start the scan, using the values you have entered,
press the OK button.
When the scan is complete and the words Scan
nished appear, press the OK button to save all the
channels that were found.
IMPORTANT: If you press the EXIT button while
your set-top box is scanning, you will lose
all the channels that were previously found.
You will therefore have to start a new scan for
channels.
USING THE OTHER MENUS