Bosch AutoDome Installation Manual download pdf (Page 62)

52 en | Cable and Wire Standards AutoDome Modular Camera System

F01U010921 | 1.0 | 2006.10 Installation Manual Bosch Security Systems, Inc.

4.3 Video and Control Cables

Coaxial Cable

Coaxial cable terminated with BNC connectors is the most common method for transmitting

composite video. Bilinx control data can also be sent over the same cable.

Bilinx is a Bosch 2-way communication protocol that allows remote control, configuration, and

updates over a video coax cable. Bilinx is available on all AutoDomes, except Ethernet models,

using the standard communications module.

AutoDome Series 300 and 500 feature cable compensation or “Pre-Comp,” which extends the

normal range of control from the head end.

UTP

Unshielded twisted pair (UTP) cable terminated with RJ45 male connectors are used to trans-

mit composite video using pins 1(+) and 2(-). Typically, a Coax to UTP cable converter is

required at the head-end of the system.

Bilinx control data can also be sent over the same two video wires (1 & 2). Bilinx is a Bosch 2-

way communication protocol that allows remote control, configuration and updates over a

passive UTP cable.

AutoDome Series 300 and 500 feature cable compensation or “Pre-Comp,” which extends the

normal range of control from the head end.

The following figure illustrates the connections necessary to transmit video and control over a

UTP cable.

Fig. 4.1 Video and Control over UTP

Cable Compensation

Maximum Distance

Cable Type With Pre-comp OFF With Pre-comp ON

RG-59/U 300 m (1000 ft) 600 m (2000 ft)

RG-6/U 450 m (1500 ft) 900 m (3000 ft)

RG-11/U 600 m (2000 ft) 1200 m (4000 ft)

Size O.D. between 4.6 mm (0.181 in.) and 7.9 mm (0.312 in.)

Shield Copper braid: 95%

Central Conductor Standard copper center

Terminal Connector BNC

Cable Compensation

Maximum Distance

Cable Type With Pre-comp OFF With Pre-comp ON

CAT5 UTP 229 m (750 ft) 450 m (1500 ft)

Terminal Connector RJ45

Requirement Coax to UTP Converter

HEAD

END

VIDEO

AUTO

DOME

PINS

1(+) & 2(-)

RJ45

COAX

Head

End

Video

Coax

Pins

Auto

Dome

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