90 en | Cable and Wire Standards VG4 Modular Camera Series
F.01U.162.025 | 6.0 | 2010.03 Installation Manual Bosch Security Systems, Inc.
RS232 (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.
Figure 5.4 Connections for RS232 Operation
Figure 5.5 Position of CPU Switch for RS232 Operation
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 ?
Slide Switch Away from LEDs (factory default)
1 C- (Biphase) 7 AutoDome Data In/Out
2 C+ (Biphase) 8 P105/P106 Connector
3 Earth Ground 9 Head End RS232
4 RxD 10 TxD
5TxD 11 RxD
6 Signal Ground 12 Ground
1 Switch Location
2LEDs
3RS232
4CPU Module
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