General; General Description - Promax MO-180 Manual De Usuario

USER'S MANUAL MO-180
SFN/MFN DVB-T/H MODULATOR

1 GENERAL

1.1 General description

The MO-180 is an SFN/MFN DVB-T/H modulator fully compliant with the DVB-
T/H standards ETSI EN 300 744 v1.5.1 (including annex F referring to DVB-H), ETSI
TS 101 191 v1.4.1 (SFN synchronisation) and ETSI EN 300 468 v1.8.1 (DVB-SI). The
modulator inputs consist of an MPEG-2 transport stream (TS) in DVB-SPI or DVB-ASI
format, a 10 MHz GPS reference and a 1pps GPS reference. The GPS inputs are used
in combination with the Megaframe Initialisation Packet (MIP) embedded in the
transport streams for SFN synchronisation purposes. The outputs are DVB-T/H signals
COFDM-modulated and up-converted to IF and RF.
The MO-180 supports 2k, 4k and 8k modes, as well as hierarchical
transmission, and it could be used in Multi Frequency Networks (MFN) and Signal
Frequency Networks (SFN). Digital coding and modulation are implemented by means
of programmable logic devices using intellectual property developed by PROMAX. This
makes the design highly flexible, allowing to tailor it to any particular application, and
offering plenty of features at low cost.
Highlights of this product are:
•
Fully compliant with the DVB-T/H standard.
•
Seamless automatic switching between DVB-ASI inputs.
•
2k, 4k and 8k carriers.
•
Hierarchical and non-hierarchical modulations.
•
SFN and MFN (Master and Slave operation) modes.
•
Filtering of up to 16 TS PIDs.
•
Channel bandwidth of 5, 6, 7 and 8 MHz (user selectable).
•
Locks to internal/external 10 MHz reference or to incoming TS data rate.
•
Frequency agile (resolution of 1 Hz).
•
Crest factor reduction followed by non-linear pre-distortion.
•
High MER (> 38 dB in RF typical, > 43 dB in IF typical).
1
Trade Mark of the DVB Digital Video Broadcasting Project (4660).
04/2008
MO-180
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