User`s guide

42 Serial Control
Sony Professional Serial Protocol
(DVM2 only)
The Digital Video Machine 2 may also be controlled using the Sony
Professional Serial Protocol, also known as “Sony 9-Pin.”
The Digital Video Machine 2 may be controlled using Sony 9-Pin serial RS-422
messages via the DB-9 Female Sony 422 connector on the rear of the unit. The
data format is user-defined, however it is typically: 38400 baud, 8 bits/byte, odd
parity, with one stop bit. These settings are determined by the configuration DIP
switch or Web Page Setup.
The serial commands that can be used with the Sony 9-Pin protocol are:
Command Function
Select File Select a file
Play Play the selected file
Still Stop output and freeze the current frame
Stop Stop video playback
The details of these commands are listed below. The “ H” following each
command byte indicates that the command bytes are in hexadecimal.
Select File
Description: This command causes the Digital Video Machine 2 to select the specified A/V
clip, sound or Playlist. Once this command is sent, the next Play command
causes the specified file to play from the beginning. The unit defaults to file #1
at power-up, unless an autoexec file exists.
Command Bytes: 24H 31H wwH xxH yyH zzH checksum
where ww corresponds to the 1’ s digit of the chapter number (01-09),
xx corresponds to the 10’ s digit of the chapter number (01-09), yy corresponds
to the 100’ s digit of the chapter number (01-09), and zz corresponds to the
1000’ s digit of the chapter number (01-09).
The checksum is the sum of all preceding bytes.
Message Response: 10H 01H 11H
Comments: This is similar to the “ Cue Up With Data” command in the Sony 9-Pin protocol.
The maximum file number is 9999.
Examples: Select file 76: 24H 31H 06H 07H 00H 00H 62H