Bosch VG4-A-PSU1 Power Supply Unit for CCTV Cameras User Manual
Page 23
Power Supply Units (AUTODOME7000, MIC7000
cameras)
Video and Control Cables (AUTODOME VG5-600 Camera Models ONLY) | en
23
Bosch Security Systems, Inc.
Installation Manual
2020-10 | |
!
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
The figure below illustrates the connections necessary for Biphase operation.
100
Ω
Figure 9.1:
Connections for Biphase Operation
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
In a daisy chain configuration, where multiple domes are connected in series, the 100 Ω
resistor must be removed from all but the last dome. You can daisy chain a maximum of four
(4) AUTODOME cameras.