ART Pro Audio DIO - A/D Converter - Manual (Page 8)

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¼” INPUT JACKS
The ¼” Input jacks are for instrument and line level signals. They have
a high input impedance to minimize any loading effects on instrument
pickups. They can also handle up to +20 dBu signals for line level
signal sources.
If nothing is plugged into the Input jacks, they automatically switch to
get their signal from the ¼” Output jacks. This allows you to loop the
digital signal thru the DI/O. In this configuration you only need S/PDIF
in and out connections.
¼” OUTPUT JACKS
The ¼” Output jacks have a low output impedance to drive a wide
variety of loads. They deliver a +20dBu signal level when the D/A is at
digital full scale. The output level at the jacks is solely a function of the
digital signal.
S/PDIF OUTPUT JACK
The digital output jack on the DI/O is an RCA type that outputs S/PDIF
stereo signals over coaxial shielded cable. The data format is S/PDIF
stereo 24bit data at up to 100kHz.
Due to this wide bandwidth, we recommend that you use high quality,
low loss, fully-shielded cabling for both of the S/PDIF connections.
S/PDIF INPUT JACK
The digital input jack on the DI/O is an RCA type that receives S/PDIF
stereo signals over coaxial shielded cable. The data format is S/PDIF
stereo 24bit data at up to 100kHz. This jack also serves as the Master
clock input when using the DI/O in External Sync mode.