Panasonic TC-L32C5 Service Manual

Contents

231.2.7. Front-End Demod / Demux• Integrated 8VSB/QAM-B demodulator• ATSC 8-VSB demodulation- Enhanced 8-VSB multi-path performance with wide equalizer coverage- Superior VSB indoor reception using enhanced equalization and synchronization algorithms,enabling Brazil and other 0 dB ghost reception- Adaptive control loops dependent upon channel conditions for fast channel acquisition andoptimal tracking- Advanced doppler ghost rejection• QAM-B demodulation- ANSI/SCTE 07, ITU-T J.83 Annex B 64-/256-QAM, 5.06/5.36 Msymbol/sec rate, respectively- Support all DI modes up to I=128, J=8- 84-tap equalization range: 36 FFE and 48 DFE for superior cable micro-reflections rejection- Enhanced phase noise rejection- Excellent burst noise and combined distortion rejection- Exceptional AM noise rejection- Fast channel auto search based on auto 64-/256-QAM detection and wide carrier acquisitionrange• Advanced system functions- Accepts 44 MHz from the tuner, eliminating external base-band demodulation- IF AGC PWM output- All digital recovery loops- FEC statistics, receiver status, and channel data such as S/N ratio, equalizer taps, carrier offset,and more are available• Adaptive selection of receiver- Adaptive recovery loops based on channel conditions are used to achieve optimum reception forboth high doppler echoes conditions and 0dB conditions- The synchronization and the equalization algorithms are based on both training signals and blinddata- It enables better channel tracking – resulting in achieving all A74 requirements• Fast channel acquisition in 0dB conditions, < 0.5sec.• Improves immunity to noise for Brazil ensembles over previous Zoran devices• Improved phase noise rejection in 0dB conditions• NTSC demodulator• Fully programmable digital video frequency and group delay equalization including internal digitalNyquist filter and excellent sound carrier digital rejection (>60dB)• Digital carrier recovery (AFT) with accurate report to host• Digital carrier recovery without quadrature distortions