HIKVISION DS-KB2421-IM Руководство пользователя - Страница 11
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NOTE
According to different transmission distances among door stations and indoor
stations, different RVV4 cable specifications are demanded.
Transmission Distance (TD)
TD ≤ 10 m
10 m < TD ≤ 30 m
30 m < TD ≤ 50 m
50 m < TD ≤ 100 m
On the rear panel of the indoor station,
four-wire interface A and four-wire
interface C compose a cascading group;
and four-wire interface B and four-wire
interface C compose a cascading group.
The communication between A and B/D
cannot be realized.
The communication between C and B/D
cannot be realized.
CAUTION
Do not connect the power wire of the four-core cable to the V pin (video wire) or A pin
(audio wire) of the four-wire interface.
Video Door Phone·User Manual
RVV4 Cable Specification
RVV4 * 0.2 mm ^2
RVV4 * 0.5 mm ^2
RVV4 * 0.75 mm ^2
RVV4 * 1.5 mm ^2
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