Tascam Digital Multitrack Recorder DA-98 Owners Manual

Section 8 – Advanced operations  
8-2 – 1.00 – 06/97
exact location point) and 59 minutes, 59 seconds, 
in 1 second increments.
1) Go to menu group 0, move the cursor to 
Loc
Pre
, and press ENTER.
2) Use the 
LEFT and RIGHT keys to select the field 
you wish to edit (minutes or seconds) and the 
UP and DOWN keys to change the value.
You can also use the function keys to enter the 
value directly, as described in 5.2.2, “Using the 
function keys as number keys”.
When you go to a location point, the tape...

Section 8 – Advanced operations
06/97 – 1.00 – 8-3
1) Go to menu group 7, move the cursor to Loc
(Func)
, and press ENTER:
2) Move the cursor to the function key number, 
and use the 
UP and DOWN keys to select the 
number of the function key memory that you 
want to change.
3) Use the 
LEFT and RIGHT keys to select the field 
(hours, minutes, seconds or frames) and use the 
UP and DOWN keys to change the value of the 
field.
There is an “invisible” field to the right of the 
number. Moving the cursor to...

Section 8 – Advanced operations  
8-4 – 1.00 – 06/97If the tape is rewinding to the first location point 
when the 
REPEAT key is pressed, it will stop.
8.3 Track delay
The DA-98 allows you to delay tracks relative to 
the other tracks, either when recording or playing 
back. You can use this function for post-produc-
tion “slip”, compensate for delays caused by 
external processing equipment, allow for propaga-
tion delay in multi-microphone sessions or add 
special effects.
The track delay can be set...

Section 8 – Advanced operations
06/97 – 1.00 – 8-5
1) Select menu group 1, move the cursor to X-
Fade
 and press ENTER.
2) Use the 
UP and DOWN keys to adjust the 
crossfade time.
You can also use the function keys to enter the 
value directly, as described in 5.2.2, “Using the 
function keys as number keys”
8.5 Vari speed (pitch control)
The speed of recording and playback (and hence 
the pitch) of the DA-98 can be adjusted to 6% 
above or below normal speed in 0.1% steps.
8.5.1 To set a non-standard...

Section 8 – Advanced operations  
8-6 – 1.00 – 06/97
ative to normal speed): 0.25, 0.5, 1.0, 2.0, 4.0, 8.0. 
The 1.0 speed is only available when shuttling in 
the forward direction.
Shuttle operations are only possible when the 
SHUTTLE indicator is lit (press the SHUTTLE 
switch).
8.6.1 Shuttle monitoring
This is also covered in 7.1.3, “Shuttle monitor-
ing”.
The default behavior of the DA-98 is that when 
shuttling the tape, you can choose whether to 
monitor off-tape or source when shuttling, using...

Section 8 – Advanced operations
06/97 – 1.00 – 8-7 The 
REF LEVEL indicators [7] will light in the 
following way to show the level selected:
8.8 Meter modes
The DA-98 peak bargraph meters can be custom-
ized to suit your working preferences. Both the 
peak hold time and the “ballistics” of the meters 
can be adjusted.
8.8.1 Peak hold time
1) Enter menu group 2, move the cursor to 
Meter Mode and press ENTER:
2) Use the 
LEFT and RIGHT keys to select the 
Peak Hold parameter and the UP and DOWN 
keys to...

Section 8 – Advanced operations  
8-8 – 1.00 – 06/97
8.10 Digital recording
The DA-98 is able to accept (and output) digital 
signals at the 
DIGITAL I/O connector [45] in TDIF-
1 format. The IF-88AE and IF-88SD interface 
units provide conversion to and from AES/EBU 
(and SP-DIF) and SDIF-2 formats.
The DA-98 should be connected to other TDIF-1 
equipment using a PW-88D or PW-88DL connec-
tor cable.
The DA-98 should be set to be either a word clock 
master or a word clock slave when connected to 
other...

Section 8 – Advanced operations
06/97 – 1.00 – 8-9
However, each track can be patched internally to 
take its input from any one of the eight inputs or 
from any one of the other tape tracks. Note that in 
the example below, it is possible for a track to act 
as an input source to another track at the same 
time that it is recording from an external input. 
This allows great flexibility in dubbing situations.
Naturally since the DA-98 tracks are digital, there 
is no loss of quality incurred when tracks...

Section 8 – Advanced operations  
8-10 – 1.00 – 06/97
input bits, as in the case of the DA-98) to a lower 
number (for instance 16, the DA-98’s tape word 
length) to improve quantization. 
Paradoxically, this technique of adding noise 
removes quantization noise and distortion at low 
signal levels and improves the overall distortion 
figures.
1
Though quantization noise is reduced, there is a 
loss of a few dB in the signal-to-noise ratio. For 
this reason, the DA-98 does not implement dither 
as a...

Section 9 – Synchronization with other DTRS units
06/97 – 1.00 – 9-1
9 – Synchronization with other 
DTRS units
This section describes the techniques and methods 
to be followed when the DA-98 is linked to other 
DTRS units (e.g. TASCAM DA-38, DA-88 and of 
course other DA-98 units).
Up to 16 DTRS units can be linked, for a total of 
128 digital tracks.
If you are connecting DTRS units of different 
types to the DA-98, use the DA-98 as the master 
unit and the other units as slave units.
9.1...