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24 en | Connection VEZ-400 Mini PTZ Dome
F.01U.252.635 | 2.0 | 2011.09 User Manual Bosch Security Systems, Inc.
Use a 2-wire (shielded), half-duplex, differential, multi-drop
with the following attributes:
Table 6.1 RS-485 Wire Specifications
The following table shows the terminal connections for the 2-
pin terminal block RS-485 connections (see Figure 6.1, item 5):
Table 6.2 2-pin Terminal Block Connections
NOTICE!
The wire shield must be tied to signal at both ends, if 2-wire
twisted pair is used.
NOTICE!
When the RS-485 signal is looped through, ensure that (only)
the last device is terminated properly. Improper RS-485 wiring
or termination may result in unreliable system operation.
Wire Type 2-wire Shielded Twisted Pair
Distance 1.2 Km (3937 ft)
Gauge 0.511 mm (24 AWG)
Impedance 120 Ω
Number Signal Color
1TRX +Sky
2TRX -White
NOTICE!
When the camera's RS-485 port is connected to a MIC-BP3
Biphase convertor, the camera's TRX+ should be connected to
the convertor's RxB, and TRX- should be connected to RxA. The
camera's baud rate should be set to 9600, and the protocol
should be set to Bosch OSRD. Also make sure that the camera
ID is configured correctly. For further details on setting up the
MIC-BP3, please refer to the separate MIC-BP3 Bi-Phase
Converter Card Installation and Operation Manual.