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 m usic tracks will start
at the correct time relative to the dialog and reference
tracks.
1Locate the slave tape with the backing music to
the start of the music. The shuttle mode may be
useful here (7.6, “Shuttle operations”).
2Rewind the master to a little before you want
the music to enter.
3Make sure the slave is ready to accept an “on-
the-fly” offset entry as described above.
4Start playing the master DA-98HR.
5When the music entry point is reached, press
the § or ¶ key on the slave machine to cap-
ture the offset point.
6Stop the master, and set the slave into CHASE
mode (8.2.3, “Master/slave settings (CHASE
mode)”).
7Rewind 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 a t 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, Autoand
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:
1Select menu group A, move the cursor to
ClkMode, and press ENTER:
2Use 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
Clock Mode
Auto