Specifications

Chapter 2: AM713 and MA703 Converters 9
Synchronization
AM713
The AM713 Sample Rate is set externally by one of two source
signals or internally by crystals and associated circuitry. The
Sample Rate Source is determined automatically by the pres-
ence of signals when the AM713 is powered on. The order in
which external signals are tested for presence is: AES, Word,
Internal.
The detected signal immediately becomes the source for the
AM713 sample rate clock. The auto-sensed Sample Rate Source
can be overridden using the button on the front panel of the
AM713, below the Sample Rate Source LEDs. If neither AES
nor Word Clock signals are present, the AM713 uses its inter-
nal clock driven by crystals.
The default internal Sample Rate of the AM713 is 48 kHz. This
default internal rate can be overridden with the Sample Rate
button on the front panel of the AM713 (directly below the
Sample Rate LEDs) to 44.1, 48 or 96 kHz.
MA703
The MA703 detects Sample Rate and Sample Rate Source like
the AM713 with the following differences:
 Since the MA703 is always a slave to an external Sample
Rate Source, there is no internal Sample Rate Source setting.
 The MA703 can use MADI in addition to AES or Word Clock
as a Sample Rate Source, and detects the presence of these sig-
nals in the following order: AES, Word, MADI.
When a signal is detected, it immediately becomes the sample
rate clock of the MA703. The auto-sensed Sample Rate Source
can be overridden with the Sample Rate Source button on the
front panel of the MA703, below the Sample Rate Source LEDs.