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52
en | Cable and Wire Standards
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.
Cable Compensation
Cable Type
RG-59/U
RG-6/U
RG-11/U
Size
Shield
Central Conductor
Terminal Connector
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.
Cable Compensation
Cable Type
CAT5 UTP
Terminal Connector
Requirement
The following figure illustrates the connections necessary to transmit video and control over a
UTP cable.
Head
HEAD
End
END
Video
VIDEO
Fig. 4.1 Video and Control over UTP
F01U010921 | 1.0 | 2006.10
With Pre-comp OFF
300 m (1000 ft)
450 m (1500 ft)
600 m (2000 ft)
O.D. between 4.6 mm (0.181 in.) and 7.9 mm (0.312 in.)
Copper braid: 95%
Standard copper center
BNC
With Pre-comp OFF
229 m (750 ft)
RJ45
Coax to UTP Converter
Coax
COAX
+
-
Installation Manual
AutoDome Modular Camera System
Maximum Distance
With Pre-comp ON
600 m (2000 ft)
900 m (3000 ft)
1200 m (4000 ft)
Maximum Distance
With Pre-comp ON
450 m (1500 ft)
Pins
PINS
1(+) & 2(-)
RJ45
Bosch Security Systems, Inc.
Auto
AUTO
Dome
DOME
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