Functional Block Diagram - Blonder Tongue Laboratories Inc.

More documents

Recommendations

Info

Broadband Specification Guide Digital CATV (QAM) Reception - Digital Viewing (QAM) Functionality This system is the digital version of a traditional ‘Cherry Picker’ system. The system will allow you to select a few desired digital channels from the local Cable Television Company, and ignore the undesired channels. These desired digital channels can then be redistributed through the existing hybrid fiber / coaxial network within the facility. This is extremely valuable if a large facility only has a 450 MHz distribution network, and the MSO’s digital offering starts at 650 MHz, there is no room for the digital tier without a costly network upgrade. The AQT can receive the desired high frequency QAM channels and transcode them to available channels within the existing 450 MHz network, delivering the desired CATV QAM channels, while preventing a costly network upgrade. If the original CATV QAM channel was encrypted, it will remain encrypted, requiring an authorized set-top for viewing. If the original CATV QAM channel was in the clear, it will remain in the clear, and can be viewed on any television with a QAM digital tuner set to “CATV” mode. In Depth Discussion The ATSC to QAM Transcoder (AQT) is a modular unit that receives the QAM (Digital CATV) signal and transcodes it to another CATV QAM channel. The AQT can be used to ‘Cherry Pick’ selected digital channels from the existing CATV QAM digital lineup and process it for redistribution. If the original CATV QAM channel was encrypted, it will remain encrypted, requiring an authorized set-top for viewing. If the original CATV QAM channel was in the clear, it will remain in the clear, and can be viewed on any television with a QAM digital tuner set to “CATV” mode. This system will allow the facilities operator to insert the selected CATV QAM carriers in to a bandwidth limited private CATV network. The input digital signal is stripped of it’s original QAM digital modulation, leaving just the basic data stream. The AQT then creates a new, clean QAM carrier and reinserts the original data stream on to this new QAM carrier. Selecting one product from each category on the following page will insure you will have all the necessary components for a working system. Once all of the products are identified, the specifications can be looked up in the specification library at the end of this publication. 18
Broadband Specification Guide Functional Block Diagram BLONDER-TONGUE 19 19
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 17: 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 69 and 70:
Broadband Specification Guide Equip
Page 71 and 72:
Page 73 and 74:
Page 75 and 76:
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.

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?