Universal Audio 2192 Master Audio Interface User Manual
Page 23
Applications: Digital to Analog Conversion
__________________________________________________________
- 19
-
D/A Conversion Using External Word Clock
In this configuration, D/A conversion is accomplished while the 2192 is synchronized to one of its two
independent Word Clock inputs.
To perform D/A conversion while synchronized to word 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 desired 2192 rear panel digital input.
3.
Using an appropriate digital BNC cable, connect the word clock output of the external master
clock source to the 2192 rear panel Word Clock input 1 (or Word Clock input 2).
4.
Set the 2192 Clock knob to Word 1 (or Word 2).
5.
Set the 2192 Sample Rate knob to the appropriate range to match the digital audio source
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 specify the digital input that the digital audio source
signal is connected to (AES/SPDIF or ADAT). If the Analog Outputs Source Select knob is set to
AES/SPDIF, use the AES/SPDIF switch to specify AES or SPDIF.
7.
Set the external word clock device to transmit word clock. It can be set to transmit a multiple
or submultiple of the sample rate if necessary. For example, a 48kHz clock can be used with
96 or 192kHz digital audio and vice versa. However, a 48kHz clock cannot be used with 44.1,
88.2, or 176.4kHz digital audio.
8.
Set the digital audio source device to transmit digital audio. The source device must be set to
synchronize to either the external 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, we recommend the use
of the 2192 clock output.
D/A conversion is performed only when the 2192 is locked (the word 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.