Promax MO-160 Manual De Usuario página 79

USER'S MANUAL. MO-16X
Hierarchy: Using this function the COFDM modulator is switched between
hierarchical mode, with different alpha constellation ratios, and non-hierarchical
mode operation. The options available are:
OFF: non-hierarchical operation.
α=1:
hierarchical mode with alpha = 1.
α=2:
hierarchical mode with alpha = 2.
α=4:
hierarchical mode with alpha = 4.
HP Code Rate: Using this function, the user can modify the convolutional code
rate for the High Priority (HP) Transport Stream (TS). The available options are as
follows:
• 1/2
• 2/3
• 3/4
• 5/6
• 7/8
LP Code Rate: Using this function, the user can modify the convolutional code
rate for the Low Priority (LP) Transport Stream (TS). The available options are as
follows:
• 1/2
• 2/3
• 3/4
• 5/6
• 7/8
Constellation: Here the menu allows the selection of one of the available
constellations. The options are:
• QPSK
• 16QAM
• 64QAM
Guard Interval: This function selects the required guard interval for the COFDM
signal. The available values are:
• 1/4
• 1/8
• 1/16
• 1/32
04/2008 Page 19