Modulator Functions - Promax MO-180 Manual De Usuario

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 Internal test TS at an appropriate bit rate consisting of NULL packets
filled with a 15- or 23- bit PRBS sequence as indicated by menu entry
"MODULATOR:PRBS bits".
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 Internal test TS at an appropriate bit rate consisting of NULL packets
filled with a 15- or 23- bit PRBS sequence as indicated by menu entry
"MODULATOR:PRBS bits".
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. In DVB-H
("MODULATOR:Mode" set to DVB-H) a further 5 MHz option appears in this menu.
8 MHz Selects an 8 MHz bandwidth.
7 MHz Selects a 7 MHz bandwidth.
6 MHz Selects a 6 MHz bandwidth.
5 MHz Selects a 5 MHz bandwidth (DVB-H only).
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USER'S MANUAL MO-180
04/2008