Operating instructions

35
D/A Using ADAT Clock with AES/SPDIF Audio
In this configuration, D/A conversion is accomplished on an AES/EBU or S/PDIF digital audio
signal while the 2192 is synchronized to the clock at the ADAT input. The audio portion (if any) of
the ADAT signal used as the clock source is ignored.
To perform AES or SPDIF D/A while synchronized to ADAT clock:
1. Connect the 2192 analog outputs to the analog inputs of the destination device (mixer,
recorder, etc).
2. Connect the digital output of the external digital audio source device to the desired 2192
digital input using an appropriate digital cable.
3. Connect the digital output of the external ADAT device that contains the digital clock signal to
the 2192 ADAT input using an appropriate optical cable.
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 clock rate is now available on the BNC Word Clock outputs for
synchronizing external devices.
6. Set the 2192 Analog Outputs knob to AES/SPDIF. Use the AES/SPDIF switch to specify
AES/EBU or S/PDIF.
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.