Functional Block Diagram - Blonder Tongue Laboratories Inc.

More documents

Recommendations

Info

Broadband Specification Guide Digital QAM Channel Generation Functionality This system will allow you to generate a digital television channel using QAM modulation from a MPEG-2 ASI (Asynchronous Serial Interface) digital transport stream. ASI outputs are typically available on video servers and digital satellite receivers. This application assumes that all the TV’s in the system are capable of receiving QAM television channels either directly with an HDTV ready TV with an integrated 8VSB/QAM tuner or through the use of set-top converter boxes. In Depth Description The QAM Modulator is the basic unit of digital cable transmission. The AQM is designed to accept a DVB based MPEG-2 ASI (Asynchronous Serial Interface) digital transport stream and modulate it into a QAM (Quadrature Amplitude Modulation) signal. The AQM also integrates a super low noise upconverter in the compact modular unit. The built in advanced bit stuffing circuitry ensures that Null Packets are inserted into the ASI transport stream if needed to ensure the correct baud rate is transmitted. Unit programming is easily accomplished through the front panel navigation buttons and LCD menuing system. When the new QAM signal is combined with other analog channels in the system the level should be attenuated so that it is 6—10 dB below the adjacent analog signals, (typically 6 dB for 256 & above and 10 dB for 64 QAM). It is always recommended to set the unit output level at the +40 dBmV and externally attenuate for optimal noise performance. Once all of the products are identified, the specifications can be looked up in the specification library at the end of this publication. 24
Broadband Specification Guide Functional Block Diagram Digital QAM Channel Generation A Video Server -or- Satellite Receiver ASI BLONDER TONGUE LABORATORIES INC. OLD BRIDGE, NEW JERSEY 08857 DRAWN ENGINEER DWG NO. 02/07/08 KK BSG020708 25
Page 1 and 2: Broadband Specification Guide Every
Page 3 and 4: Broadband Specification Guide Table
Page 5 and 6: Broadband Specification Guide Safet
Page 7 and 8: Broadband Specification Guide Funct
Page 23: Broadband Specification Guide Funct
Page 33 and 34: AQT ATSC-TO-QAM TRANSCODER Broadban
Page 43 and 44: Broadband Specification Guide IPME-
Page 45 and 46: = = ~ Broadband Specification Guide
Page 51 and 52: HDE-ASI HD/SD/NTSC-to-ASI Encoder B
Page 59 and 60: Broadband Specification Guide Equip
Page 75 and 76:
Broadband Specification Guide Equip
Page 77 and 78:
Page 79 and 80:
Page 81 and 82:
Broadband Specification Guide CATV
Page 83 and 84:
Page 85 and 86:
Page 87 and 88:
Page 89 and 90:
Page 91 and 92:
Page 93 and 94:
Page 95 and 96:
Page 97 and 98:
Page 99 and 100:
Page 101 and 102:
Broadband Specification Guide Frequ
Page 103 and 104:
Broadband Specification Guide Addit
show all

Functional Block Diagram - Blonder Tongue Laboratories Inc.

Create successful ePaper yourself

Delete template?

Save as template?