EMM Labs CDSD DISC TRANSPORT - Manual (Page 11)

CDSD User Manual
Appendix
The following technical notes are provided for informational purposes, and are for use by
authorized personnel only.
A: Serial Remote Control (RS-232)
The CDSD is equipped with a 9-pin RS232 connector for system remote control via a
serial cable (not provided by EMM Labs). The cable should be non-crossed for
connections between a PC and the CDSD. The parameters and settings for this link are:
• 19,200 baud
• 8 bits
• 1 stop bit
• no flow control
• no parity bit
Commands to CDSD
All commands sent to the CDSD consist of 3 ASCII characters followed by a .
Repeating a will repeat the last command sent. Received commands are not
stored in a stack and, therefore, need to be sent in intervals of at least 500ms to allow
enough time for the CDSD to execute a command before receiving the next one.
Char 0 Char 1 Char 2 Char 0
>500ms
ply Start playback
pse Pause playback
stp Stop playback
mod Toggles between CD – SA-CD stereo, SA-CD multichannel. The first time
this command is sent after a playback period it needs to be repeated after
about 1 second to get activated.
rpt Toggles between no repeat – repeat track – repeat all
prv Jumps back one track
nxt Jumps to next track
try Opens / closes tray
don Turns front panel display on
dof Turns front panel display off (unit keeps operating)
pon Turns CDSD on from Standby mode
pof Stops playback and sets CDSD to standby
tr0, tr1, .. Direct access to tracks on disc. Track number above 10 can be accessed
by first sending a command with the tens, and then a command with the
ones.
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