Zenith ATSC Broadcast Modulator for broadcast Digital Television
Source: Zenith Electronics Corporation
The ATSC modulation system was invented by Zenith engineers to provide a robust and efficient transmission system
Applications
The ATSC modulation system was invented by Zenith engineers to provide a robust and efficient transmission system for advanced digital broadcast television. At the heart of Zenith's solution is Zenith's ATSC Broadcast Modulator which creates an 8VSB Trellis encoded signal from an ATSC MPEG encoded bit stream. The modulated signal uses a standard 44 MHz intermediate frequency (I/F) output which is upconverted to the desired channel and used by any digital transmitter for terrestrial broadcast. The ATSC Broadcast Modulator I/F output can also be used by standard cable upconverters for private network applications, including factory or laboratory test and development of new ATSC compliant receiving devices. Zenith engineers have developed enhanced features in the modulator which allow linear and non-linear pre-correction for amplitude and phase errors which are common in high power transmitters.ATSC Compliant 8VSB Trellis encoded modulation
ATSC compliant 16VSB modulation for high data rate applications in private networks
SMPTE 310M standard digital bit stream input
Standard 44 MHz I/F output (center of channel)
Micro-processor control on board
Pre-correction circuits built into the system
One-year warranty Remote PC connectivity software
Pre-correction analysis software (when used with third party test equipment)
The ATSC modulation system was invented by Zenith engineers to provide a robust and efficient transmission system for advanced digital broadcast television. At the heart of Zenith's solution is Zenith's ATSC Broadcast Modulator which creates an 8VSB Trellis encoded signal from an ATSC MPEG encoded bit stream. The modulated signal uses a standard 44 MHz intermediate frequency (I/F) output which is upconverted to the desired channel and used by any digital transmitter for terrestrial broadcast. The ATSC Broadcast Modulator I/F output can also be used by standard cable upconverters for private network applications, including factory or laboratory test and development of new ATSC compliant receiving devices. Zenith engineers have developed enhanced features in the modulator which allow linear and non-linear pre-correction for amplitude and phase errors which are common in high power transmitters.
FEATURES
OPTIONAL FEATURES
Zenith Electronics Corporation, 1000 Milwaukee Avenue, Glenview, IL 60025. Tel: 847 391-8043; Fax: 847 391-8651.
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