The solution to receive free-to-air channels via satellite (HD or SD) and watch them in DTT format.

Features

• Digital transmodulation (DVB-S/S2 to DVB-T) with Transport Stream Processing.
• LCN (Logical Channel Number) Support.
• SD & HD channels support.
• Fixed signaling (to edit ONID, NID, SID, TSID).
• Central xPSK Input Frequency (1 MHz steps)
• Input Symbol Rate (0.001 MS/s steps)
• Central COFDM Output Frequency (1 kHz steps)
• Output Channel Bandwidth (6, 7 or 8 MHz; also 5 MHz on DVB-H)
• Output Operation Mode (2K or 8K; also 4K on DVB-H)
• RF Output Level
• FFT Window (Fast Fourier Transform), to reduce interference on adjacent channel
• In-depth interleaving (only on DVB-H; with 2K and 4K modes)
• Optional Blockade of Services, PIDs and Conditional Accesses, with Regeneration of Tables
• NIT Adaptation

MTI Headend

Digital transmodulation (DVB-S/S2 to DVB-T) with Transport Stream Processing. The DVB-S/S2 channels located in the
Sat-IF frequency band (950-2150 MHz) are transformed to DVB-T channels located in the 47-862 MHz band.

A MTI headend includes

• As many MTI tansmodulators as COFDM channels to be distributed.
• One HPA that amplifies the sum of the output DVB-T channels from the transmodulators.
• One or more CFP Power Supplies.
• One or more Rack-Frames or wall-fixing Base-Plates. The base-plates can be joined horizontally.
• Usually, housing units for the base-plates.
• If the headend is large, one or more AMX-400 combiners.

The MTI headends provide a DVB-T multichannel signal whose level is appropriate to feed the distribution network. An extension input at the HPA amplifier allows easy coupling of the wideband 47-862 MHz signal provided by another existing headend. You can use your TV DTT (Digital Terrestrial Television) for programs receiving satellite channels treated at the station MTI.

Functional description of the MTI transmodulators

An MTI transmodulator carries out the complete channel processing from the input to the output:

• tunes a DVB-S/S2 digital channel of the 950-2150 MHz band, demodulates the signal being received,
• processes the transport stream, and
• re-modulates it in DVB-T format on an RF channel that is selectable within the 47-862 MHz frequency range.

Simple cabling of MTI headends

The MTI transmodulators feature two directionally coupled input and output ports. SAT-IF signal can therefore be directly fed into the input port of the first module, which in turn passes in through the coupler to the next and so forth. On the output side, the same procedure is repeated which forms the channel coupling. The sum of the combined channels is turn connected in the same way to the drive amplifier_ the HPA module or an external wideband amplifier_ which then feeds the distribution network. For power connection, each module has two DC banana sockets that allow to build a +12 VDC cascade. A third banana socket is available to connect the power for the attached LNB.

Local programming is carried out either with the SPI-300 unit, which is connected to each module individually. In order to perform NIT adaptation, the IKUSUP bus must be installed. The last module at the right end of the IKUSUP cascade carries out the control function.

Remote programming may by carried out only if the HMS control unit is installed in the headend.

Functions of the TD processing

• Bit Rate adaptation with PCR restamping
• Adaptation of NIT table
• Adaptation to the particular adjustments of the headend is automatic. Name and identifier of the new network can be
• edited.
• Service and CA blockade
• Blockade is at service level and at conditional access level.
  Automatic regeneration of PAT, SDT and CAT tables.
• TS monitoring
  Usage level of the Transport Stream —percentage of null packets— is presented along the programming process.
• LCN insertion.
• TS_ID, SID, ONID and NID edition.

Specifications

Additional info

Product sheet