
(2) Power supply using cables other than Category 5 STP cable
Category 5 STP straight cable  | |
Wall connector (RJ45)  | Wall connector (RJ45)  | 
VM amplifier
Remote
microphone
Under 40 Ω (one way)  | Category 5 STP straight cable  | 
  | 
  | 
Example: Up to 200 m via 200 Ω/km cable
Cable resistance (one way)  | Extension length  | |
  | 
  | 
  | 
200  | Ω/km  | Up to 200 m  | 
  | 
  | 
  | 
100  | Ω/km  | Up to 400 m  | 
  | 
  | 
  | 
50  | Ω/km  | Up to 800 m  | 
  | 
  | 
  | 
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