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Digital Video Recorder 440/480 Series
4.4
RS-232 COM port connections
The RS-232 COM port is used to connect a PC to the unit for service purposes or to connect a
Bosch "RS-232 to Bi-Phase Converter". For service purposes, use a null-modem cable to
connect the serial port of the PC to the unit. The Baud rate can be selected in the menu
system.
Specifications
Connector type: 9-pole D-type male connector
Maximum input voltage: ±25V
Communicaton protocol: Output signals according EIA/TIA-232-F
Figure 4.5 RS-232 COM port connector
Signal name
DCD_in
RX
TX
N/C
System ground
N/C
RTS
CTS
N/C
Table 4.1 RS232 console port socket
Bosch Security Systems
Pin number
1
2
3
4
5
6
7
8
9
Installation and Operation manual
Hardware setup | en
Description
Carrier detection signal (not used)
RS-232 receive signal
RS-232 transmit signal
No connection
System ground
No connection
RS-232 request to send signal
RS-232 clear to send signal
No connection
AM18-Q0605 | v2.0 | 2012.04
23
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