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Dolby Installation Guidelines
6-1
Chapter 6
Serial Communications
These products all feature RS-485 and/or RS-232 connections. These can be used to
upgrade the unit software or to control the operation of the unit. The electrical and
mechanical specifications for these ports are as SMPTE 207M. The pin assignments for
these connections are shown in the tables below. For information about the remote
protocol, contact Dolby Laboratories.
6.1 RS-232 Ports
• DP562 Serial I/O (female)
• DP572 Auxiliary Data (male)
Table 6-1 Pin Connections for 9-Pin RS-232 Ports (DP562 and DP572)
Pin Connection Comment
1
DCD Direct connection to DTR, DSR, and CTS
2
RX Asynchronous data out
3
TX Asynchronous data in
4
DTR Direct connection to DCD, DSR, and CTS
5
GND Signal ground
6
DSR Direct connection to DCD, DTR, and CTS
7
NC
8
CTS Direct connection to DCD, DTR, and DSR
9
NC