Operation Manual

System Configurations
Korg 1212 I/O 19
English
Setting the word clock source on an ADAT system
ADATs have three settings for word clock source: “Digital,” “Internal,” and
“External.”
Digital means that they sync to an external clock through their optical or 9-
pin inputs, if they are connected to another ADAT optical device (such as
the 1212 I/O); if there are no other devices connected, then they use their
internal clock.
Internal means that they use their internal clock, regardless of any signal at
the optical input.
External will only appear if the ADAT is connected to a BRC, or another
ADAT sync master (such as the Mark Of The Unicorn MIDI Timepiece AV).
In a multi-device system without the Alesis BRC, the first device (the unit
that displays “Id 1” at startup) will have been designated the word clock
master at startup, and this is the only one you need to change. The rest of
the devices will automatically be set to slave to the master through their
digital inputs.
When using the Alesis BRC, you do not need to make any settings on the
ADATs themselves (they’ll automatically be set to External); instead, the
BRC controls the word clock of the connected ADATs. See below for
instructions on working with the BRC.
ADAT XT, Fostex CX-8, Panasonic MDA-1 (without BRC)
On the ADAT XT, Fostex CX-8, and Panasonic MDA-1, both the word clock
source and the sample rate are set using the Clock Source button on the
front panel. The current Clock Source setting is shown in the lower right-
hand side of the fluorescent display. Pressing the button repeatedly toggles
through the four choices: INT 48kHz, INT 44.1kHz, DIG 48kHz, and DIG
44.1kHz. “INT” is Internal, and “DIG” is Digital.
If the ADAT is providing the master clock source, the sample rate (48kHz
or 44.1kHz) will control the entire system, including the 1212 I/O. If the
tape is not formatted for the current sample rate, the sample rate may flash
in the display, and the front-panel clock may not be correct, but otherwise
everything will be fine; please see your ADAT manual for details.
If DIG is selected, the on-screen “DIG” indicator will flash if there is a
problem with the signal at the ADAT’s optical input (such as no cable
connected, or invalid word clock).
Original ADAT (without BRC)
On the original ADAT, hold the “SET LOCATE” button, and then press
“DIGITAL IN.” This toggles the ADAT between “int” (Internal) and “dig”
(Digital). This is a little tricky, since you cannot see the setting without
changing it. Press the buttons until you see the desired setting.