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Section 7 – Monitoring modes
7-2 – 1.00 – 06/97
7.1.3 Shuttle monitoring
In addition to these modes, there is one further
control,
SHTL MON
[20], that affects monitoring,
but only in one special case – shuttle mode. Usu-
ally, when shuttling the tape, you will want to
monitor off-tape. However, if a track is armed,
you may want to listen to the source input signal,
rather than the off-tape recording.
The
SHTL MON
key has no effect when
AUTO
MON
is off. While shuttling, you can use tracks’
INPUT MONITOR
switches (regardless of arming
status) to change between source and off-tape
monitoring.
When the
AUTO MON
and
SHTL MON
are both on
(the indicators will light), the output from all
armed tracks will be the source input. This cannot
be changed.
If
AUTO MON
is on, but
SHTL MON
is off, all
armed tracks will monitor off-tape in shuttle
mode. This cannot be changed.
7.2 Confidence mode
When actually recording in a studio, it is usual to
monitor the input signals, rather than the tape.
This allows accurate synchronization between stu-
dio events and the actions of the control room
staff. If a “glitch” is later discovered in the record-
ing, or it is discovered that a signal has been
wrongly routed, resulting in an unwanted record-
ing being produced, it is a relatively simple matter
to re-record the take.
In a live recording situation, this luxury is not pos-
sible. One can hardly ask an orchestra giving a
concert to repeat a movement of a symphony for
re-recording purposes!
For this reason, the DA-98 includes a confidence
mode which permits off-tape monitoring on a
track-by-track basis while recording is in
progress.
Confidence mode provides monitoringoff-tape
while recording for all tracks, except those tracks
whose
INPUT MONITOR
switch is active. The
monitoring of these tracks will be the input
source, not tape.
The actual mechanics of how this is accomplished
internally are quite complex, but the result is that
off-tape signals are delayed by about 240 millisec-
onds relative to the input signal. This means that it
is not recommended that you perform punch-ins,
etc. in the confidence mode.
In the confidence mode, overdubbing will be out
of sync with previously recorded tracks, as well as
with the input source.
We suggest you use confidence mode only when
laying down long takes of basic tracks which will
not need punching for correction (e.g. laying
down tracks from a video worktape, or classical
live recordings). You may also choose to use con-
fidence mode when you are dubbing from another
audio multitrack tape to the DA-98, to ensure the
quality of the transfer.
Another use for the confidence mode is when you
are recording using dither (see 8.13, “Dither”).
You may want to check the effects of dither on the
re-quantized recording as the tracks are being laid
down.
NOTE
ALL INPUT
overrides any shuttle monitoring selec-
tions described below. Any shuttle monitoring while
ALL INPUT
is on will always be source monitoring.
NOTE
You can always (regardless of any other status except
ALL INPUT
)
use the
INPUT MONITOR
switch of
unarmed tracks to switch between source and tape
monitoring.
NOTES
You can also disable off-tape shuttle monitoring with
the Shuttle Mute function (see 8.6.2, “Shuttle muting”)
.
Shuttle monitoring is attenuated by 12 dB compared
with other monitoring modes. This helps to avoid dam-
age to tweeters, etc. when shuttling fast.