AutoDome Power Supply Boxes
Cable and Wire Standards | en
29
Bosch Security Systems, Inc.
Installation Guide
F.01U.250.895 | 1.0 | 2011.08
3.4
Control-only Cables
3.4.1
Controlling the AutoDome via Biphase
(Shielded 2-wire, half-duplex, multi-drop, 5000 ft. cable limit)
Biphase is the standard Bosch protocol used to send Pan/Tilt/
Zoom control over 2-wire shielded twisted pair (STP)
terminated with a 100 Ω terminal resistor.
The AutoDome has a 100 Ω termination resistor between the
Biphase C+ and C- terminals.
The figure below illustrates the connections necessary for
Biphase operation.
Figure 3.2
Connections for Biphase Operation
CAUTION!
The Biphase shield must be connected to the head end only.
Cable Type
STP - Shielded Twisted Pair
Distance
1524 m (5000 ft) Belden 8760 recommended
Transmission Rate
31.25 KHz
Gage
1.02 mm (18 AWG)
Termination
100 Ω
Terminal Connector
Screw terminals
Voltage
4 Vp-p
1 C- (Biphase)
7
AutoDome Data In/Out
2 C+ (Biphase)
8
Head End Biphase
3 Earth Ground
9
P105/P106 Connector in Power Supply
Box
4 RxD
10 C- (Biphase)
5 TxD
11 C+ (Biphase)
6 Signal Ground 12 Shield
100
Ω
Summary of Contents for VG4-A-PSU0
Page 1: ...AutoDome Power Supply Boxes VG4 A PSU0 VG4 A PSU1 VG4 A PSU2 en Installation Guide ...
Page 2: ......
Page 39: ......
