The ATSC modulation system was invented by Zenith engineers to provide a robust and efficient transmission system
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.
FEATURESATSC 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
OPTIONAL FEATURES Remote PC connectivity software
Pre-correction analysis software (when used with third party test equipment)
Zenith Electronics Corporation, 1000 Milwaukee Avenue, Glenview, IL 60025. Tel: 847 391-8043; Fax: 847 391-8651.