Cable TV System Diagram
1. Basic components (1) Receiving signal source (2) Front-end equipment (3) Trunk transmission system. Such as trunk amplifier (AGC), (ASC) and trunk cable or optical cable.
(4) User distribution network
(5) User terminal
TV reception, FM broadcast, cable modem (Cable Modem, PC, IP phone, etc.) etc.
Cable Modem, connected to the computer with RJ-45 10Base-T connector, the downstream carrier frequency is between 88 and 860 MHz, using 64/256QAM, the downstream rate can reach 42.4M bps, the upstream modulation frequency can be as high as 42 MHz, using QPSK/16QAM, the upstream rate can reach up to 10Mbps.
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