Applications: Digital to Analog Conversion
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D/A Conversion of AES/SPDIF Audio Using ADAT Clock
In this configuration, an incoming AES or SPDIF digital audio signal is converted to analog while the
2192 is synchronized to the clock arriving at the ADAT input. (The audio portion [if any] of the ADAT
signal is ignored.)
To perform AES or SPDIF D/A while synchronized to ADAT clock:
1.
Connect the 2192 rear panel analog line outputs to the analog inputs of the destination
device (patch bay, mixer, DAW, etc).
2.
Using an appropriate digital cable, connect the digital output of the external digital audio
source device to the 2192 ‘s AES or SPDIF digital input.
3.
Using an appropriate optical cable, connect the digital output of the external ADAT device that
contains the digital clock signal to the 2192 rear panel ADAT input.
4.
Set the 2192 Clock knob to ADAT.
5.
Set the Sample Rate Select knob to the appropriate rate to match the AES/SPDIF digital audio
sample rate. The selected sample rate is used by all four 2192 rear panel Word Clock outputs
to enable synchronization of external devices.
6.
Set the 2192 Analog Outputs knob to AES/SPDIF. Use the AES/SPDIF switch to specify AES or
SPDIF.
7.
Set the external ADAT device to transmit digital clock.
8.
Set the AES/SPDIF source device to transmit digital audio.
9.
Set the AES/SPDIF audio source device to synchronize to either the external ADAT clock master,
or to the clock output of the 2192. If the digital audio sample rate is a multiple/submultiple of
the external clock rate, use the clock outputs from 2192 for the digital audio source device.
D/A conversion is performed only when the 2192 is locked (the external clock must be running)
and digital audio is present at the digital input. The Locked lamp glows green when the 2192 is
successfully synchronized to an external clock source.
