Bosch VG4-A-PSU1 Power Supply Unit for CCTV Cameras - Manual (Page 24)

24 en | Video and Control Cables (AUTODOME VG5-600 Camera Models ONLY)
Power Supply Units (AUTODOME7000, MIC7000
cameras)
2020-10 | | Installation Manual Bosch Security Systems, Inc.
100 Ω
Figure 9.2: Connections for a Daisy Chain Configuration
1 C- (Biphase) 9 Dome 3
2 C+ (Biphase) 10 Dome 2
3 Earth Ground 11 Dome 1
4 RxD 12 Head End Biphase
5 TxD 13 C- (Biphase)
6 Signal Ground 14 C + (Biphase)
7 Last Dome Data In/Out 15 Shield
8 P105/P106 Connector in Power Supply Box
9.7 Controlling the AUTODOME via the RS232 Protocol
(3-wire, full-duplex, single-ended, 50 ft. cable limit)
RS232 is a common, single-ended communication protocol used for control. Data transmission
via 3-wires (TDX, RXD, common) is from one transmitter to one receiver at relatively slow baud
rates (up to 57.6 Kbaud) and short distances up to 50 ft.
Notice!
After making the wire connections for RS232 operation, reposition the slide switch located on
the CPU Module to the camera head inward and away from the LEDs.
Wire Type 3-wire (TXD, RXD, common)
Distance 15 m (50 ft)
Maximum Baud Rate 57.6 Kb
Voltage ± 15 V
Termination 100 Ω
Slide Switch Away from LEDs (factory
default)