Functional Block Diagram - Blonder Tongue Laboratories Inc.

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Broadband Specification Guide Inserting a Local Origination Into a Cable TV Feed Functionality This system will allow you to eliminate unwanted channels that are being provided by the local cable TV company, and replace them with channels made within the facility. This signal can now be handed off to a traditional coaxial distribution network or a hybrid fiber / coaxial distribution network within the facility. In Depth Description This system is a variation on two other systems that were mentioned earlier: Local Origination, and Cable TV Feed. This hybrid system replaces a channel on the existing cable TV line up with one that was generated locally. The key to success in this system is correctly making space for the new channel in the cable TV line-up. Once the channel to be eliminated has been identified, a channel elimination filter and modulator must be specified. The channel elimination filter makes room for the new channel by completely removing the old channel. The new channel is created by the modulator that accepts audio and video input and makes a cable TV channel. The channel elimination filter and modulator must be the same channel in order for the system to work. The channel elimination filter must be a very high quality filter so that it does not harm the channels next to it. Points to pay attention to are a high quality channel elimination filter to completely remove the existing channel, and making sure that when the new channel is combined with the existing cable TV feed, it is done at the correct level so that neither signal damages the other. If you pick one product from each category on the next page, 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. 36
Broadband Specification Guide Functional Block Diagram Inserting a Local Origination Into a Cable TV Feed FROM CATV COMPANY A (SINGLE CHANNEL ELIMINATION FILTER) - CEF-750 (CH 2-38, 98, 99) # 4446 A #__ B C #__ B F (AMPLIFIER) - RMDA 550-30P # 5500P53 - RMDA 750-30P # 5500P73 - RMDA 860-30P # 5500P83 - RMDA 860-43P #5500P84 - 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 E D C (MODULATOR) - AM-45-550 # 59404 - AM-60-860 /OPT. 5 # 59415A/5905 (AGILE 860 MHz STEREO) - MAVM-861 # 7992B (FIXED CHANNEL) - MICM-45C #7797C (MODULAR FIXED CHANNEL) - MICM-45S #7797S (MODULAR FIXED CHANNEL - STEREO) - AMM-806 #7763 (MODULAR - AGILE) - AMCM-860 #7766B (MODULAR-AGILE) F D (COMBINER) - OC-8D COMBINER # 5957 - OC-12D COMBINER # 5953 - OC-24E COMBINER # 5794 - OC-32E COMBINER # 5795 G SUB E (COMBINER - ALL CHANNELS GET COMBINED AT SAME LEVEL) - SXRS-2 # 1922 (COMBINES BOTH INPUTS WITH SAME LEVELS) - SRT-** 1940-** (CATV FEED AND LOCAL SOURCE ARE DIFFERENT LEVELS; TAP VALUE IS DIFFERENCE AND TAP PORT CONNECTS TO HIGHER LEVEL SOURCE) G (DIPLEXER) - DSV-42 #4376 H (MODULAR RACK CHASSIS) - MIRC-4D #7711 (4 SLOT CHASSIS + POWER SUPPLY) - MIRC-12V #7715 (12 SLOT CHASSIS) - MIPS-12 #7722C (POWER SUPPLY) BLONDER TONGUE LABORATORIES INC. OLD BRIDGE, NEW JERSEY 08857 DRAWN ENGINEER 01/03/08 KK DWG NO. KK 060417B 37 37
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Functional Block Diagram - Blonder Tongue Laboratories Inc.

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