EMMLabs DAC2, Owner'S Manual

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