Harmonic ProView 2900 Installation Manual page 90

Chapter 6: Receiver Configuration Modules
FEC Rate
6.2.1.3.
The FEC Rate parameter sets the Forward error correction rate value. The FEC parameter
can be acquired from the satellite transponder information or can be set to automatic. When
in Automatic mode, the ProView 2900 device tries all FEC rates until locking the rate to the
transport stream. The following figure illustrates the FEC Rate screen.
1 1 1 1
2 2 2 2
3 3 3 3
4 4 4 4
5 5 5 5
6 6 6 6
The available options are: Automatic, 1/2, 2/3, 3/4, 5/6, 7/8
NOTE
If the specific Viterbi rate is not provided, selecting the Automatic option enables the
ProView 2900 to automatically detect the Viterbi rate.
Spectral Inversion
6.2.1.4.
The Spectral Inversion parameter sets the spectral mode of operation. This parameter is
configured according to the information provided from the broadcast head-end or can be set
to automatic.
When set to automatic mode, the ProView 2900 tries the two spectral modes until obtaining
synchronization. The following figure illustrates the Spectral Inversion screen.
1 1 1 1
2 2 2 2
3 3 3 3
The available options are:
AUTOMATIC – Automatically selects between Normal and Inverted spectral mode
•
INVERTED – Inverted spectral mode
•
NORMAL – Normal spectral mode
•
© Harmonic Inc. Manual p/n 101543/Ver 1.0
FEC Rate FEC Rate FEC Rate FEC Rate
AUTOMATIC AUTOMATIC
AUTOMATIC AUTOMATIC
1/2 1/2
1/2 1/2
2/3 2/3
2/3 2/3
3/4 3/4
3/4 3/4
5/6 5/6 5/6 5/6
7/8 7/8 7/8 7/8
Spectral Inversion Spectral Inversion Spectral Inversion Spectral Inversion
AUTOMATIC AUTOMATIC AUTOMATIC AUTOMATIC
INVERTED INVERTED INVERTED INVERTED
NORMAL NORMAL NORMAL NORMAL
Satellite Receiver Configuration
6-5 ProView 2900 Series/SW Version 1.94