Instruction Manual

Applications: Analog to Digital Conversion
__________________________________________________________
- 16 -
A/D Conversion Using External Clock
In this configuration, the 2192 is synchronized (slaved) to an external master digital source clock.
Two separate word clock inputs, as well as AES/EBU, S/PDIF, and ADAT optical, can be used as clock
sources for external synchronization.
In this mode, A/D conversion is accomplished at any available 2192 sample rate, even if the external
clock is running at a multiple or submultiple of the 2192 sample rate. (see page 6 for information
on sample rate selection)
To perform A/D conversion using external clock:
1. Connect the analog source signals to the 2192 rear panel analog line inputs.
2. Using an appropriate digital cable, connect the 2192 rear panel digital output(s) to the
external device digital input(s) that will receive the digitized audio signal.
3. Using an appropriate digital cable, connect the master clock source from the external device
to the 2192 digital audio or word clock input that will receive the clock signal.
4. Set the 2192 Clock knob to specify the digital input that the external clock is connected to.
If the Clock knob is set to AES/SPDIF, use the AES/SPDIF switch to specify AES or SPDIF.
5. Set the 2192 Sample Rate knob to the desired frequency. (see page 6 for information on
sample rate selection)
6. Set the 2192 Digital Outputs knob to ADC.
7. Set the external device to receive digital audio input signal.
8. Set the external master clock device to transmit digital clock.
A/D conversion is performed only when the 2192 is locked (the external clock must be running). The
Locked lamp glows green when the 2192 is successfully synchronized to an external clock source.