Dvb-T2 (Cofdm) Digital Channel Configuration - Promax TV EXPLORER HD+ Manual De Instrucciones

Spectral Inv.
Code Rate
Modulations
Hierarchy
Cell ID
Figure 20.- Screen of mesurement configuration (COFDM signals).

5.13.3 DVB-T2 (COFDM) Digital Channel Configuration

Press the Measurements Configuration
CONFIGURATION menu and turn the rotary selector
signals parameters which have been detected when locking the signal (except for the
bandwidth, which is defined by the user):
Page 44
(Spectral inversion) This option detects if there is a spectral
inversion applied on the input signal.
Also known as Viterbi ratio, defines the ratio between the data bits
number and the total number of bits transmitted (the difference
corresponds to the number of control bits for the error detection and
recovery).
Carriers modulation. It also defines the system noise immunity.
(QPSK, 16-QAM and 64-QAM).
The DVB-T/H norm contemplates the possibility to make a TDT
transmission with hierarchical levels, it is to say a simultaneous
transmission of the same program with different image qualities and
noise protection levels, in order the receiver can exchange to a
signal of smaller quality when the reception conditions are not
optimal.
Cell identifier. Shows the transmission identification code.
USER'S MANUAL. TV EXPLORER HD+
[17] key to access to the
[1] to access the COFDM
11/2013