Queensland security OSD High Speed Dome Camera Installation Manual download pdf (Page 20)

Installation Guide

3.4.4 RS-485 Connector

RS-485 is the interface that communicates the dome camera and its control

device. Please connect the control keyboard to the speed dome through the

terminal block. The recommended cables for RS-485 communication are CAT

5 cables; maximum cable length for over 24-gauge wire is 4000 feet (1219

meters). If the total cable length exceeds 4000 feet, using a repeater to

maintain the signals is recommended. Please refer to the figure and table

below for pin defination and wiring.

3.4.5 Cable Wiring and Connection

Users may need to do cable wiring when: (1) Connecting self-provided cords

to the connector housing (shown in the figure below) instead of using the

equipped data cable or (2) Connecting alarm input and output devices. The

table follows will illustrate the way to wire cords into the connector housing

(shown in the figures below). Please refer to the section 3.4.3 22-Pin

Connector Definition for the exact position of each cord.

Corresponding Pins

(22-Pin Connector)

Definition

1 7,10 T+, R+ (D+)

2~4 Reserved

5 8,9 T-, R- (D-)

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 57 58

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Queensland security OSD High Speed Dome Camera Installation Manual Page 20