CATV: Part 2
Node
Optical transmitters at the headend send light energy along fiber cables to optical receivers inside devices known as nodes. The node then transforms this light energy into electrical energy. This electrical energy takes the form of radio-frequency waves, and they are delivered into the CATV distribution system by metallic coaxial cables (Figure 9). Fiber cables need space for slack loops (Figure 10) and electricity from the power company (Figure 11).
To change light energy to electrical energy, nodes need electricity. The CATV structure where power is transferred from the electric company is known as a power supply. Power supplies and nodes can be in the same cabinet (Figure 12).
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Node
Optical transmitters at the headend send light energy along fiber cables to optical receivers inside devices known as nodes. The node then transforms this light energy into electrical energy. This electrical energy takes the form of radio-frequency waves, and they are delivered into the CATV distribution system by metallic coaxial cables (Figure 9). Fiber cables need space for slack loops (Figure 10) and electricity from the power company (Figure 11).
To change light energy to electrical energy, nodes need electricity. The CATV structure where power is transferred from the electric company is known as a power supply. Power supplies and nodes can be in the same cabinet (Figure 12).
