Videotec DCT - Manual (Page 79)

6.2 BOSCH Dome
6.2.1 Materials and reference documents
Dome BOSCH Basic Dome Series.
Basic Dome Series's instruction manual.
Receiver/Driver and AutoDome Control Code Protocol, TC8560/TC700 Series PHILIPS.
6.2.2 Connecting the dome hardware
TheBasic Dome series has two communication modes: RS232 and Bi-Phase.
Given that the keyboard communicates only and exclusively in RS485 mode, it is necessary to use protocol
converters as described below.
6.2.2.1 Dome in RS232 communication mode
DCT RJjack1 Connection diagram
RS485A White
RS485B Yellow
Warning
In this communication mode each dome needs a protocol converter.
6.2.2.2 Dome in Bi-Phase communication mode
DCT RJjack1 Connection diagram
RS485A White
RS485B Yellow
Page 77 of 176 MNVADCT03_0716
RS485 RS485
RS485
RS232
RS232 RS232
Level converter
BOSCH
RS232 to BIPHASE
Protocol Converter
Model: LTC8786
Level converter
To other devices
1 2 3 4 5
6 7 8 9
Rx GND
RS485 RS485 RS232
RS485
RS232