Functional Block Diagram - Blonder Tongue Laboratories Inc.

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Broadband Specification Guide Preventing Reception of Undesired Programming on Cable TV Feed Functionality This system will allow you to block undesired channels from your local cable TV company. Cable channels determined to contain distracting, offensive or otherwise inappropriate programming material can be prevented from being received throughout the facility’s distribution network. In Depth Description The TV Channel Blocker (TVCB -PC) is user programmable that can block up to 40 channels between 2 and 86 (54-600 MHz). Channel blocking is accomplished by a method known as “interdiction”, which utilizes interfering signals to provide dynamic channel jamming. The TVCB is designed for input levels normally encountered on CATV drops, which is why it is installed ahead of the distribution amplifier. The TVCB features a lockable enclosure to prevent unauthorized program changes and unit bypassing. The amplifier should be selected to meet the desired system channel capacity and gain requirements. All passives (not shown – see Coaxial Distribution pages in this guide) must be rated for CATV applications having high RFI shielding specifications and 5-1000 MHz frequency bandwidth. If you pick one product from each category on the following pages, you will have all of the components to ensure a working design. Once all of the products are identified, the specifications can be looked up in the specification library at the end of this publication. 34
Broadband Specification Guide Functional Block Diagram Preventing Reception of Undesired Programming on Cable TV Feed CATV INPUT A A (TV CHANNEL BLOCKER) - TVCB-PC # 9110 - TVCB-ACC # 9136 = ~ B (TV CHANNEL BLOCKER POWER SUPPLY) - TVCB-PP # 9126 B = C TO DISTRIBUTION SYSTEM A (AMPLIFIER) - RMDA 550-30P # 5500P53 - RMDA 750-30P # 5500P73 - RMDA 860-30P # 5500P83 - RMDA 860-43P # 5500P84 - RMDA 86A-30 # 5200-83 - BIDA 55A-30P # 5800P53 - BIDA 75A-30P # 5800P73 - BIDA 86A-30P # 5800P83 - BIDA 55A-43P # 5800P54 - BIDA 75A-43P # 5800P74 - BIDA 86A-43P # 5800P84 - BIDA 100A-30 # 5800-13 BLONDER TONGUE LABORATORIES INC. OLD BRIDGE, NEW JERSEY 08857 DRAWN ENGINEER 07/31/06 WNW DWG NO. AC-021405S 35
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