EMM Labs DAC2 AUDIO CONVERTER - Manual (Page 16)

016 Appendix A - Serial Remote Control (RS232)
© 2010 EMM Labs Inc., All Rights Reserved. EMM Labs reserves the right to amend specifications & design without notice.
DAC2 AUDIO CONVERTER OWNER’S MANUAL
Serial Remote Control (RS232)
The DAC2 is equipped with a 9-pin RS232 port for system remote control via a serial cable
(not provided by EMM Labs). Please use a standard RS232 cable. Do not use a null model
cable, as this will not work. RS232 communication port settings:
• 19,200 baud
• 8 bits
• 1 stop bit
• no flow control
• no parity bit
Commands to the DAC2
All commands sent to the DAC2 consist of 3 ASCII characters (all lowercase) followed by a
carraige return or <CR>. Repeating a <CR> will repeat the last command sent. Received
commands are not stored in a stack. They need to be sent in intervals of at least 50ms to
allow enough time for the DAC2 to execute a command before receiving the next one.
Command Function
pol Toggles the analog output polarity
mut Mutes the outputs
emm Selects the EMM Optilink input
aes Selects AES/EBU format PCM digital audio via XLR
cox Selects SPDIF format PCM digital audio via coax/RCA connector
to1 Selects TOSLINK format PCM digital audio via TOS1 connector
to2 Selects TOSLINK format PCM digital audio via TOS2 connector