Promax HD RANGER 2 User Manual page 162

Digital CABLE television signal of SECOND generation
A1.1.6
(DVB-C2 standard/COFDM modulation)
DVB-C2 Parameters
Channel Bandwidth
►
It is the channel bandwidth between 6 MHz, 7 MHz and 8 MHz.
Spectral inversion
►
It detects if the input signal has been inverted.
Guard Interval
►
It corresponds to the dead time between symbols; its purpose is to detect
echoes due to multi-paths. This parameter is expressed in terms of the
symbol duration: 1/64 or 1/128.
Constellation
►
COFDM modulation with constellations QPSK, 16QAM, 64QAM, 256QAM,
1024QAM, 4096QAM. The constellation refers to all the selected PLP data.
Code rate
►
It defines the ratio between the number of data bits and the total number
of bits transmitted (the difference corresponds to the number of control
bits for the error detection and recovery): 2/3, 3/4, 4/5, 5/6, 8/9, 9/10.
DSLICE id
►
DSLICE identifier. A DSLICE is a data packet containing a group of several
PLPs.
PLP id
►
PLP (Physical Layer Pipes) identifier. Layers are used by the system to
transmit compressed data such audio, video and more.
June 2014
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