GC Protronics, Inc

DTV Solution Provider for CATV, Terrestrial, and Satellite TV

Headend System Back to Product Home
The Headend is the heart of CATV system. It handles many functions including reception and processing of broadcast or “off-air” television signals and reception, decryption and modulation of satellite delivered programming in preparation for distribution to cable television subscribers.

LaVision840EN MPEG-2 Encoder	LaVision840 MX Re-Multiplexer
Application: CATV digital headend, MMDS Fixed/Mobile contribution/distribution DVB-T digital terrerial Channel encoder Video-on-Demand Direct Broadcast Satellite Features: Time Based Correction Advance 4:2:0 Main Profile @ Main level Video Compression DVB-compliant, MPEG-2 Transport Stream Standard output bitrate 2-15 Mbps Professional Composite video input Component video in and SDI in Variable GOP structure Dual ASI output Stereo Audio input Support MPEG-2 layer I/II audio encoding 1 Rack unit DVB encoder	Application: CATV digital headend, MMDS and DVB-T Fixed/Mobile contribution/distribution Transport Stream Processing Direct Broadcast Satellite system Features: DVB Multiplexing of up to 8 MPEG-2 Transport stream Advance Re-multiplexing PSI/SI Auto-generation and Processing PID filtering/re-mapping EPG/Mossair/DBC/OTA upgrade inserting Front panel for direct status information Ethernet interface for communication with Management System 8 ASI input and Dual ASI output interface 1 Rack unit DVB Re-Multiplexer



LaVision840SR Scrambler	LaVision840QM QAM Modulator:
Application: CATV digital headend, MMDS and DVB-T Direct Broadcast Satellite System Features: Compliant with DVB standard Compliant with DVB-SimulCrypt, supporting more than one CAS Support SPTS and MPTS Effective input bit rate 1-50 Mbps Selectable package length 204/188 Support injections of ECM and EMM data through ethernet PCR corrections Support Common Scrambling Algorithm (CSA) Generate scrambling Control Word (CW) Support PDI scrambling Support TCP and UDP communication protocols 1 Rack unit DVB Scrambler	Application: 840QM receives multiplexed TS data stream and performs frame weaving, Reed Soloman (RS) coding QAM modulation to result in modulated RF or IF output signals Ready for the cable or MMDS broadcast network. Features: The modulator supports constellation of 4QAM, 16 QAM, 32 QAM, 64 QAM, 128 QAM, and 256 QAM. For the model with RF output, the equipment offers agile RF output in the frequency range of 50 MHz – 860 MHz, adjustable in a step of 0.1 MHz together with an adjustable output level. This is a high performance broadcast QAM DVB-C digital television modulator, which allows digital MPEG-2 Packet-data to be transported through conventional CATV and MMDS network