Avid Technology HD MADI, Manual

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HD MADI Guide 6
Sync Mode LEDs
The SYNC MODE LEDs indicate the current
Clock Source as set in Pro Tools.
INT (Internal) Indicates HD MADI sample clock
is generated by its internal crystal oscillator, as
determined by the session Sample Rate.
DIG (Digital)
Indicates that MADI digital sync is
providing system clock.
LOOP
Indicates that HD MADI is slaving to an-
other peripheral using Loop Sync.
EXT (External)
Indicates that HD MADI is using
the Word Clock in port (BNC) for system syn-
chronization.
When synchronized to Word Clock, External
Clock input and output do not have to be at the
same Word Clock Rate. Synchronization to Ex-
ternal Clock is typically 1x the current session
sample rate. However, for sample rates higher
than 48 kHz, HD MADI generates a choice of 1x,
2x, or 4x the base rate of 44.1 kHz or 48 kHz, as
follows:
Session Sample Rate Word Clock Support
44.1 kHz 44.1 kHz
48 kHz 48 kHz
88.2 kHz 88.2 kHz
44.1 kHz
96 kHz 96 kHz
48 kHz
176.4 kHz 176.4 kHz
44.1 kHz
192 kHz 192 kHz
48 kHz