CDSA 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 CDSA 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 CDSA. The parameters and settings for this link are:
•
19,200
baud
•
8
bits
•
1 stop bit
•
no flow control
•
no parity bit
Commands to CDSA
All commands sent to the CDSA 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 CDSA 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
Switches between CD and SA-CD stereo layers of a SA-CD disc. The
player needs to be in stop mode before the layers can be switched.
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 CDSA on from Standby mode
pof
Stops playback and sets CDSA to standby
pol
Toggles polarity of analog and digital outputs
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.
7
