Measurements Configuration; Dvb-T (Cofdm) Digital Channel Configuration - Promax PRODIG-3 Manual Del Usaurio

USER'S MANUAL. PRODIG-3
Whenever the process detects new parameters for some channel, it will create a
new channel plan containing the detected information.
5.13

Measurements configuration

With the aim of taking the measurements of all types of signals some times could
be necessary that user enters parameters relative to particular characteristics of these
signals, whether an automatic detection has not been possible, or these parameters
differ from the standard corresponding ones.
Press the Measurements Configuration
CONFIGURATION menu and turn the rotary selector [1] to access to parameters which
are modifiable by the user.

5.13.1 DVB-T (COFDM) Digital Channel Configuration

Press the Measurements Configuration
CONFIGURATION menu and turn the rotary selector [1] to access the COFDM signals
parameters which can be defined by user and are described below:
1) Carriers (Number of carriers)
It defines the number of modulation carriers between 2k and 8k. To modify its
value, place the marker over the Carriers field by turning the rotary selector and
then press it: a menu will appear on the screen. Turning the rotary selector [1]
select the desired value for the Carriers parameter and finally press it again to
validate.
2) Guard Interval
The Guard Interval parameter corresponds to the dead time between symbols,
its purpose is to permit a correct detection in multi-path situations. This parameter
is defined according to the symbol length: 1/4, 1/8, 1/16, 1/32. To modify its value,
by turning the rotary selector [1], place the marker over the Guard Interval field
and then press it : a menu with the available values will appear. Turning the rotary
selector [1] select the desired value and finally press it to validate.
3) Channel BW (channel bandwidth)
Enables the channel bandwidth to be selected between 8 MHz, 7 MHz and
6 MHz. The selection of this parameter is essential for the correct operation of the
tuner, as it affects the frequency separation of the carriers.
03/2008
[17] key to access to the
[17] key to access to the
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