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Base Unit UC-380 (for Modular Headend MMH-3000)
Cod: R81700
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Base Unit UC-380 (for Modular Headend MMH-3000)
Base Unit UC-380 (for Modular Headend MMH-3000)
Front view (closed and open front door)
Base Unit UC-380 (for Modular Headend MMH-3000)
Top view
Base Unit UC-380 (for Modular Headend MMH-3000)
Bottom view
Base Unit UC-380 (for Modular Headend MMH-3000)
View of the unit with five modules installed in
Base Unit UC-380 (for Modular Headend MMH-3000)
The included AC/DC adapter, patch cable, mount accessories

The Base Unit UC-380 R81700 houses MMH3000 headend of Terra. It can be put in 19" rack. The unit incorporates power supply, RF amplifier, and intelligent data bus. It may hold up to 8 individual modules for digital satellite or digital terrestrial receivers with integrated VSB/DSB modulators, MPEG slave units with integrated VSB/DSB modulators and separate VSB modulators for connecting to standalone receivers:
  • RDC-313C R81710 - QPSK/PAL receiver with CI and VSB modulator
  • DM-313 R81712 - MPEG2/PAL decoder with VSB modulator
  • MT-310 R81708 - VSB modulator VSB (B/G/D/K/I/L)
More on MMH-3000 headend you can read in the article :
.
Specifications

Name

Base Unit UC-380 for MMH-3000

Code

R81700

Power

Supply voltage [V/Hz]

180-250/50

Maximum power consumption [W]

125

Output voltage/max current [V/A]

5.5/14

LNB power (switchable) [V/A]

18 / 0.6 max

RF output

Frequency range [MHz]

47...862

Insertion loss [dB]

-18

Isolation [dB]

>20

Output amplifier

Frequency range [MHz]

47...862

Gain [dB]

20

Gain adjustment [dB]

10

Maximum output level [dBuV]

102
(with 8 modules)

Test output [dB]

-20

General data

Operating temperature [oC]

0...+50

PC interface

RS485 or USB (option)

Dimensions [mm]

450.5x235x126

Weight [kg] 6.5
MODULAR HEADEND MMH3000

MMH3000 headend is a compact solution for the reception of DVB-S and DVB-T programs for analogue redistribution in SMATV and small CATV networks. It allows to make effective system in a hotel, boarding house, multi-family house, housing development etc.
The system consists of a base unit housing up to 8 individual modules for digital satellite or digital terrestrial receivers with integrated VSB/DSB modulators, MPEG slave units with integrated VSB/DSB modulators and separate VSB modulators for connecting to standalone receivers. The base units can be grouped to provide a greater number of programs.
An interesting solution is decoding four satellite programs from one transponder with single QPSK/PAL receiver (RD-313C R81710) and three DM-313 R81712 decoders. The DM-313 decoders utilize the MPEG-2 transport stream from the RDC-313C. If the RDC-313 receiver incorporates CA module, the transport stream is unencrypted.
After connecting QUATRO LNB the programming of the headend can be performed via a PC with MASTER R81706 program (or its free versionTerra Link ), or with handheld control unit PC100 ( R81702).
Terra Link enables the operator to control the system locally or remotely (up to 16 modules). It requires to use UD-104 R81704 interface (local control), or PCS-200 R81716 (remote control).

The free application program Terra Link allows to:
  • automatic detection of module status
  • graphical representation of adjusted parameters
  • saving and loading parameters to/from the PC
Its commercial version - CMH MASTER R81706 - also provides:
  • support of a group of units containing up to 255 modules
  • access to the system log (events)
  • possibility of SMS alarms (via PC GSM terminal)
Thanks to vestigial side band (VSB) the modulators used in the system 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.
Example configuration of the headend
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Base Unit UC-380 (for Modular Headend MMH-3000)
Cod: R81700
 
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