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8 - Synchronization with other DTRS units
48
TASCAM DA-78HR
standard sequence, working from the head of the
chain to the end.
8.2.2 Setting machine ID
1
Press the
SHIFT
key so that the
SHIFT
indicator
is flashing, and press the
MENU
key, until the
counter shows
SYSTEM--
(
SYSTEM--
).
2
Press the
SUB MENU
key until the display
shows
id. sel. ;; (
ID SEL xx
), where xx is the
current machine ID setting.
3
Use the ▲ and ▼ keys to change the value
between 1 and 15.
NOTE
If you try to set the machine ID to anything other than
1, when no sync cable is connected, an error mes-
sage will be shown.
8.2.3 Master/slave settings (CHASE
mode)
Each unit with an ID greater than 1 is regarded as a
s lave u nit.
1
For each slave unit in the chain, press the
SHIFT
key so that the
SHIFT
indicator is flash-
ing, and press the
MENU
key, until the counter
shows
SYSTEM-- (
SYSTEM--).
2
Press the
SUB MENU
key until the display
briefly shows
TIME. MODE (
TIME MODE
) and
then changes to show the current time mode
(which is either ABS—absolute or TC—time-
code).
3
If any slave unit sh ows
TC
, use the ▲ and ▼
keys to change this to
ABS
.
4
On each slave unit, press the
CHASE
key. The
CHASE
indicator will start flashing.
5
Press an y of the transport controls on the mas-
ter unit (machine ID 1). The slave unit(s) will
synchronize and follow the transport com-
mands of the master.
When a slave unit is locked to the master unit,
its
CHASE
indicator will light steadily. While
chasing, the transport keys of the slave unit are
disabled.
6
To turn off chase mode on a slave unit, press
the
CHASE
key so that the
CHASE
indicator
goes off.
NOTE
When chasing, it may take some time before chase
lock is achieved. A slave unit cannot start recording
until it has achieved chase lock status.
8.3 Machine offset
It is sometimes necessary to offset a slave unit in the
chain relative to the master unit. This offset can be
set to sample accuracy to a maximum value of ± two
hours.
NOTE
This offset is unrelated to timecode offset and refers
only to the machine offset when synchronized to
other DTRS units.
8.3.1 Setting machine offset
1
Press the
SHIF T
key so that the unit enters shift
mode (flashing
SHIFT
indicator).
2
Press the
AUTO IN/OUT (OFFSET)
key.
3
The display will show
ABS. OFST. (
ABS
OF ST
) and the current offset (if any has been
set).
4
Use the ▲ and ▼ keys to set the offset for the
slave unit, and the
SHIFT
ed ▲ and ▼ keys to
move the cursor to the different fields. The
OF FSET
key can also be used as a right cursor
key.
See 4.3.5, ““Left” and “right” keys” for details
of setting values in a time field.
5
You can also change the sign of the offset value
between by moving the cursor to the sign.
When a non-zero offset is set, the front panel
OF FSET
indicator will light.
NOTE
When a non-zero offset is set, the front panel indi cator will light.
If you change an offset value (timecode or ABS), any
punch points, location memories, etc. will be invali-
dated. For example, if you change the offset to
00:30:00.00 (30 minutes) from 00:00:00.00 (no off-
set), a punch point which was previously at
00:33:00.00 (33 minutes into the tape) will still have
the same value (00:33:00.00), but wi ll now be only 3
minutes into the tape.
8.3.2 Cancelling machine offset
To cancel machine offset, simply set the offset value
to 00:00:00.00.
1
Enter the offset setting, as described above.