Symphony I/O: Configuring Digital I/O Formats

Configuring Digital I/O Formats

Setting the Optical I/O Format 

When using an optical I/O Module, set the format of the optical inputs and outputs to either ADAT/SMUX or S/PDIF using the Optical Format drop down menu, found on the Device Settings tab.

The following format selections are available:

• ADAT - This format transmits 8 channels of digital audio over one Toslink (optical) cable at sample rates of 44.1 to 48 kHz.
  The ADAT format, originally found on Alesis ADAT digital recorders, is found on a wide array of digital devices such as keyboards, audio PCI cards and audio interfaces.
• SMUX - This format transmits 8 channels of digital audio over 2 Toslink cables at sample rates of 88.2kHz to 96kHz.
  The SMUX format, an extension of the ADAT format, allows the transmission of digital audio data at higher sample rates.
• S/PDIF - This format transmits 2 channels of digital audio over 1 Toslink cable at sample rates of 44.1kHz to 96kHz.
  S/PDIF optical format connections are often found on keyboards, CD players and other consumer audio devices.

Using the S/PDIF Coax I/O

The S/PDIF Coax format transmits 2 channels of digital audio over 1 coaxial cable at sample rates of 44.1 to 192 kHz. S/PDIF Coax format connections are found on audio PCI cards, audio interfaces, digital effects units and CD players.

• S/PDIF Coax Input Itʼs necessary to replace a stereo pair of analog or digital inputs with the S/PDIF Coax Input in order for the S/PDIF Coax Input to appear on the Routing tab grid.
  Use the S/PDIF Coax Replaces drop down menu, in Maestro's Input tab, to select the analog or digital input pair to be replaced by the S/PDIF Coax Input pair.
• S/PDIF Coax Output The S/PDIF Coax Output is "tapped" from one of the other analog or digital stereo output pairs.
  Use the S/PDIF Coax Mirrors drop down menu, in Maestro's Output tab, to choose which analog or digital stereo output pair will be duplicated on the S/PDIF Coax Output.