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ABE PRODUCTS
Digital Modulators
ABE manufactures a wide range of latest generation digital modulators, all with high quality and performance, suitable for different purposes.
The main are:
- Terrestrial Broadcasting (DVB-T/H and ATSC standard)
- Satellite distribution and contribution (DVB-S, DVB-S2 and DVB-DSNG standard)
- Microwave Links (DVB-S/S2 and OFDM/DVB-T standard)
ABE Modulators employ the latest technology FPGA (Field Programmable Logic Array) and DSP (Digital Signal Processor); modulation schemes are according to the reference standard and include OFDM, 8VSB, QPSK, PSK, APSK and QAM.
Output may be at Intermediate Frequency (IF according to the standard, at 36 or 44 or 70MHz) or in the VHF, UHF or L band.
All ABE digital modulators are designed to transmit MPEG Transport Stream data (according to the DVB or ATSC standard) and are normally provided with ASI input interface; as option, modulators can be equipped with other input interfaces: GBE (10/100/1000 Ethernet - Video Over IP), Satellite receiver (DVB-S/S2) or Terrestrial receiver (DVB-T).
The input transport stream, except for some particular cases, is automatically adapted to the data speed (bit-rate) requested by the modulator through adding or discarding null data packets; while carrying out this operation, the modulator also provides the update of the time reference (PCR) in the transport stream (time re-stamping).
Digital modulators are offered by ABE in a wide range of different combinations - for example, a single 19" 1U standard rack chassis can house, besides the digital modulator, up to 4 MPEG encoders and the multiplexer (see DME1000 series).
1. Digital TV Modulators Brochures, video & demo software
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