User manual

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 <CR>.

Repeating a <CR> 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 <CR> 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.