9 – Operations related to timecode–Chasing to timecode
64
TASCAM DA-98HR
9.5.5
Using MIDI Time Code (MTC)
The DA-98HR can output MIDI Time Code in
almost exactly the same way as it outputs audio time-
code, with the following exceptions.
MIDI Time Code is only output when the control
protocol is set to MIDI. See 10.1, “Selecting the con-
trol source (protocol)” for details of how to do this
using menu group 3.
MIDI Time Code can be output either when the DA-
98HR is playing, or in fast forward or rewind, or
when stopped. You can turn off the output during the
“fast” modes and while stopped, to avoid overloading
a MIDI data stream.
1
Go to menu group 7, move the cursor to
MTC
Out
and press
ENTER
:
2
Use the
Ó
and
Á
cursor keys to select the
field for which you want to turn MTC on and
off, and the
§
and
¶
keys to turn MTC on or
off.
Note that if the
Output
field is turned
off
, turning the other fields
on
will have no
effect.
NOTE
Note that the DA-98HR cannot accept MIDI timecode, and
therefore cannot chase to MTC.
9.6
Chasing to timecode
The following sections describe the operation of the
DA-98HR when chasing to external timecode.
The operation of the
CHASE
switch is similar to the
way the
CHASE
switch is used when synchronizing
DTRS units (8, “DTRS synchronization”), but in this
case, the machine ID is not used.
9.6.1
Machine ID and timecode
Since a DA-98HR with machine ID set to 1 is always
a master unit as regards DTRS sync operation, there
is no need to make any setting on such a machine if it
is to be a timecode slave. As long as timecode is
received at the
TIME CODE IN
connector (the
EXT
TC
indicator is lit), a unit whose machine ID is set to
1 will automatically enter timecode chase mode
when the
CHASE
key is pressed.
However, when a DA-98HR unit has its machine ID
set to a value other than 1, there is a conflict when the
CHASE
key is pressed. You must determine whether
the chase mode refers to timecode or to the DTRS
sync, and this is done using the Time Mode menu
(9.1.3, “Selecting TC or ABS timing”). If
ABS
is
selected, when
CHASE
is pressed, the machine will
enter DTRS sync mode, but if
TC
is selected, the
machine attempts to lock to external timecode.
When the DA-98HR is in “chase-ready” mode (the
CHASE
indicator is flashing) and timecode is
received at the
TIME CODE IN
connector, the DA-
98HR starts to chase the timecode. When it is locked
to the incoming timecode, the
CHASE
indicator
lights steadily.
NOTE
S
The timecode frame rate used on the DA-98HR must
match the frame rate of incoming timecode (9.4, “Selecting
the frame rate”). If they do not match, a warning message
will be shown, and the DA-98HR will not chase to time-
code. You can check the frame rate of incoming timecode
(See “Checking external timecode” on page 62.) and of the
timecode recorded on the DA-98HR’s tape (See “Checking
tape TC” on page 58.
The timecode used internally by the DA-98HR does not
have to be an actual timecode striped tape. Instead, time-
code can be “synthesized” from the ABS subcode timings,
as described in 9.2, “Tape timecode mode”.
The exact ways in which it chases the timecode and
handles transport functions, etc. are determined by a
number of settings, as described below:
9.6.2
Setting timecode offset
You may enter a timecode offset for the audio from
the DA-98HR to match the audio (or video sequence)
from the timecode master.
As with the machine offset (8.4, “Machine offset”),
you can either set this manually, entering the num-
bers, or set it “on-the-fly” by ear. In either case, once
the offset has been entered, it can then be edited.
The offset can be set to subframe accuracy (1/100ths
of 1 frame) or to sample accuracy.
M T C
O u t p u t
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F a s t
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