promax_MO-170

PROMAX MO-170 DVB-T and DVB-H Modulator

The MO-170 is a general purpose DVB-T and DVB-H modulator designed to achieve the maximum performance yet at an affordable price. The unit has three selectable MPEG-2 TS inputs (2xASI and 1xSPI).
Produktnummer: MO-170
BESKRIVELSE

The MO-170 is a general purpose DVB-T and DVB-H modulator contained in a 19” 1U chassis, fully compliant with the DVB-T/H specification ETSI EN 300 744 v1.5.1. The unit has three selectable MPEG-2 TS inputs (two serial ASI inputs and one parallel SPI input). The input to the modulator is an MPEG-2 Transport Stream (TS) in DVB-SPI or DVB-ASI formats. The outputs from the unit are the COFDM modulated DVB-T/H signal upconverted to IF and RF.

The modulator has been designed to achieve the maximum performance yet at an affordable price. The MO-170 supports 2k, 4k and 8k modes, hierarchical transmission and it can operate in Multi Frequency Networks (MFN). The digital coding and modulation process is implemented with programmable logic devices using PROMAX proprietary IP. This makes the design highly flexible, allowing to tailor it to any particular application.

SPESIFIKASJONER
MPEG-2 TS INPUTS
2x DVB-ASI, 1x DVB-SPI
TS packets of 188 or 204 bytes (auto detect)
Const. avg. TS packet rate in slave mode (no packet stuffing)
Packet stuffing and PCR re-stamping in master mode
OUTPUTS
IF OUTPUT Fixed at 36 MHz (when RF output is off) / 0 dBm fixed
RF OUTPUT 45-875 MHz (1 Hz steps), -87 to -27 dBm (1dB steps, optional up to +6 dBm)
OPERATING MODES
MASTER or SLAVE
DVB-T/H PARAMETERS
IFFT SIZE 2k, 8k (4k with DVB-H option)
GUARD INTERVALS 1/4, 1/8, 1/16, 1/32
CODE RATES 1/2, 2/3, 3/4, 5/6, 7/8
CONSTELLATIONS QPSK, 16QAM, 64QAM
HIERARCHICAL MODES 16QAM and 64QAM. Constellation ratio α = 1, 2 or 4
CHANNEL BANDWIDTH 6, 7, 8 MHz (user-selectable)
MFN OPERATION Available
REMOTE CONTROL
RS-232C interface (DB-9 male connector)
DOKUMENTASJON