8 – DTRS synchronization–Machine offset
TASCAM DA-98HR
53
Another DA-98HR (the slave) has a tape with some
tracks containing video backing music. It is neces-
sary to produce an offset between the two so that
when the master is played, the music tracks will start
at the correct time relative to the dialog and reference
tracks.
1
Locate the slave tape with the backing music to
the start of the music. The shuttle mode may be
useful here (7.6, “Shuttle operations”).
2
Rewind the master to a little before you want
the music to enter.
3
Make sure the slave is ready to accept an “on-
the-fly” offset entry as described above.
4
Start playing the master DA-98HR.
5
When the music entry point is reached, press
the
§
or
¶
key
on the slave machine to cap-
ture the offset point.
6
Stop the master, and set the slave into
CHASE
mode (8.2.3, “Master/slave settings (CHASE
mode)”).
7
Rewind the master to a little before the music
entry and start playing.
The slave machine now follows the transport
movements of the master, with the appropriate
offset, so that the music enters at the right
point.
8.4.5
Clock mode
There are some circumstances where it may be nec-
essary to use independent reference clocks on a chain
of DTRS units when
TC
time mode (see 9.2, “Tape
timecode mode”) is selected.
There are two settings,
Auto
and
Individual
(individual).
Note that this is only relevant when the time mode is
set to TC, rather than ABS (see 9.1, “ABS and
SMPTE/EBU timecode”).
Auto
is the default, and the unit behaves as fol-
lows when this is selected.
If
Individual
is selected, the unit behaves
as follows:
1
Select menu group A, move the cursor to
ClkMode
, and press
ENTER
:
2
Use the
§
and
¶
keys to select one of the two
settings:
Auto
and
Individual
.
NOTE
This does not mean that you can use two different word
clocks in a system—it means that the same word clock can
be fed in more than one way to different units in a chain of
DTRS recorders.
Copy of video worktape audio tracks
Connection from
SYNC OUT
to
SYNC IN
00:57:00:00
Start of tape
01:00:00:00
Start of video
01:02:21:18
Music entry
00:57:00:00
Start of tape
01:00:00:00
Start of music (tape
is cued here)
Backing music
Press the
§
or
¶
key at this
point. The offset will be set to
00 02 21 18
Slave unit’s time
mode
Master DA-98HR
Slave DTRS units
a
a.DA-98HR, DA-78HR and v2.0 DA-98 units
ABS
All clock sources
DTRS sync
TC
Internal
Internal
WORD, VIDEO, AES/
EBU, or SLOT
DTRS sync
Slave unit’s time
mode
Master DA-98HR
Slave DTRS units
a
a.DA-98HR, DA-78HR and v2.0 DA-98 units
ABS
All clock sources
DTRS sync
TC
Internal, WORD,
VIDEO, AES/EBU or
SLOT
C l o c k
M o d e
A u t o
