Modulator ASI-TS MPEG -> ISDB-T/TB Promax MO-370

Code: Promax MO-370

Datasheet

PDF, 0.12 Mb

Description

The MO-370 is a general purpose ISDB-T and ISDB-TB modulator contained in a 19" 1U chassis. The unit has two serial MPEG TS-ASI inputs. Either of these inputs can be used to modulate the COFDM signal. An additional test TS can be generated internally in the modulator. This allows generating compliant ISDB-T/T_B signals even in the absence of a valid TS input.

The modulator can be configured to generate any of the transmission modes listed in the DTMB specification. Several test modes are available in the MO-370 (single tone output and test TS generation). The MO-370 has been designed to work in Multi Frequency Networks (MFN).

TS MPEG INPUT	2x ASI TS packets of length 188 or 204 bytes. (automatic detection) Support for burst and continuous packet mode Input TS bit rate strictly below the value given in the ISDB-T/T_B specification
OUTPUTS IF OUTPUT RF OUTPUT	31-36 MHz (fixed at 36 MHz with RF output off) / 0 dBm fixed 45-875 MHz (1 Hz steps), approx. 80 dBµV power.
ISDB-T/TB PARAMETERS MODE GUARD INTERVAL CODE RATE CONSTELLATIONS	Mode 1 (2k), Mode 2 (4k), Mode 3 (8k) 1/4, 1/8, 1/16, 1/32 1/2, 2/3, 3/4, 4/5, 7/8 DQPSK, QPSK, 16-QAM, 64-QAM
TEST MODES Pilot carriers TS packet generation	For signal level alignment, generate a single carrier at the channel central frequency. Internal generation of test TS using PRBS sequences of length 15 or 23 embedded within NULL packets
ECHOES GENERATOR

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