Modular Headend TERRA MMH-3000

Main features of TERRA MMH-3000 headend

- Possibility of receiving a number of encrypted programs with a single card
- PC-controlled and programmed
- Manageable via the Internet
- Master - Slave technology
- Access to the system log (events)
- Possibility of SMS alarms (via PC GSM terminal)
- Graphical representation of adjusted parameters
- VSB modulators
- Detailed user manuals (assembling, programming, diagnostics) in English, Lithuanian, and Polish
- 2-year warranty
- Competitive price

Description of MMH-3000

Digital modular headend TERRA MMH-3000 is a compact headend solution for the reception of DVB-S and DVB-T programs for analog redistribution in SMATV and small CATV networks, e.g. in hotels, boarding houses, multi-family houses, housing developments. Thanks to vestigial side band modulators it allows to utilize adjacent channels.

The base unit can be installed into a standard 19" rack or standalone wall, fixed by reversing the mounting brackets. The unit incorporates power supply, RF amplifier, and intelligent data bus. It may hold up to 8 individual modules - digital satellite or terrestrial receivers and RF modulators.

The headend can be programmed with dedicated handheld control unit PC100, or through a PC with commercial CMH Master program, or its limited free version.

Due to capability of demodulation of multiple transponder streams, the complete stream is available as MPEG-2 TS (Transport Stream) at the dedicated output of QPSK CI Receiver RD-313C. It can be utilized by MPEG-2 TS Decoders/VSB Modulators DM-313. It is an optimum solution for receiving several programs from one transponder, saving the number of QPSK receivers.

MMH-3000 headend features high maximum output level (102 dBuV), which allows to feed up to 60 outlets, without additional amplifiers. For a greater number of outlets one should employ ZG-401/601 channel amplifiers.

Typical PAL modulator produces spurious signal (side band) lying in the lower adjacent channel. It eliminates the channel from use in the system (necessity of one-channel gap).

The modulators used in TERRA MMH-3000 headend use VSB modulation. Thanks to vestigial side band they allow to utilize adjacent channels. This kind of operation requires balanced output levels of output channels. The differences among individual channels cannot exceed 3 dB.

Find more about the limited free version: TERRA LINK at http://www.dipolnet.com/bib203.htm

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