Synchronization; Sample Rate; Current Time Position - Euphonix R-1 audio deck Manual

Synchronization

Sample Rate

The Sample Rate of the Audio Deck is set by one of three external source signals
or internally by means of crystals and associated circuitry. The Sample Rate source
is determined automatically by the presence of signals at the time the Audio Deck is
powered on or by settings in the R-1 software application. The order in which each
external signal is tested for its presence is as follows:
of the Audio Deck. In the event that none of these signals are present the Audio
Deck will provide an internal clock driven by crystals. The default internal Sample
Rate of the Audio Deck is 48 kHz. This default internal rate can be overridden by
the R-1 software to generate 44.1, 48kHz. As the standard R-1 configuration also
includes a Studio Hub, this software control over internally generated Sample Rate is
not directly user accessible in version 1.0.

Current Time Position

In the standard configuration, the current time of the R-1 system is established
by the Studio Hub, either according to the Studio Hub's internal time code generator
or according to external time codes provided to the Studio Hub. The R-1
application software sets the Studio Hub as the system time code master by default.
In this configuration the Studio Hub inserts time code information on track 55 and
56 of the MADI stream to the Audio Deck. To make use of this time code the Audio
Deck must have a 1394 connection to the Studio Hub (both Audio Deck and Studio
Hub are attached to the Pilot Computer in the standard configuration).
R-1 Audio Deck Manual
AES
Word
MADI
As soon as a signal is detected it becomes the source for Sample Rate clocking
©1999 Euphonix, Inc. Page 9