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4.4
MODULATOR functions.
At this menu level, the modulator parameters can be modified and customised to
the user's needs. When modifying any modulation parameter, changes became active
only when confirmed by pressing the encoder function. Instead, pressing the MENU key
allows us to cancel the change of option. Let's comment on each function.
HP TS Input: Selects the input used for providing a High Priority (HP) Transport
Stream (TS) to the COFDM modulator. Note that in non-hierarchical transmissions,
this is the only TS input to the modulator. Options are:
ASI1:
Use TS provided at ASI1 input connector (rear panel).
ASI2:
Use TS provided at ASI2 input connector (rear panel).
SPI:
Use parallel TS provided by SPI connector (rear panel).
PRBS:
Use internally generated PRBS data to generate TS test packets.
QPSK:
Use TS provided at demodulated DVB-S IF input. (rear panel. Only
MO-162 / MO-163).
LP TS Input: Selects the input used for providing a Low Priority (LP) Transport
Stream (TS) to the COFDM modulator. Note that in non-hierarchical transmissions,
this input is not used. Options are:
ASI1:
Use TS provided at ASI1 input connector (rear panel).
ASI2:
Use TS provided at ASI2 input connector (rear panel).
SPI:
Use parallel TS provided by SPI connector (rear panel).
PRBS:
Use internally generated PRBS data to generate TS test packets.
QPSK:
Use TS provided at demodulated DVB-S IF input.
(rear panel. Only MO-162 /
BW: This option enables output channel bandwidth selection. The COFDM signal
can be generated with a BW of 6 MHz, 7 MHz and 8 MHz.
8 MHz:
selects an 8 MHz bandwidth.
7 MHz:
selects a 7 MHz bandwidth.
6 MHz:
selects a 6 MHz bandwidth.
Page 18
MO-163).
USER'S MANUAL. MO-16X
04/2008
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