Tascam RC-898 User Manual
Section 6.1 - Reference modes
6-1
6 – Location functions
The RC-898 can store and recall up to 100 loca-
tion memory positions, allowing you to find key
points in a recording project easily.
tion memory positions, allowing you to find key
points in a recording project easily.
The contents of location memories (timecode val-
ues) are displayed on the
ues) are displayed on the
LOCATE TIME/VALUE
LED display [15], and the number of the current
location memory is displayed on the
location memory is displayed on the
MEMORY
NO
. 2-digit LED display [14].
6.1 Reference modes
Before proceeding with an explanation of the way
in which location operations are carried out, it is
necessary to examine the way in which times are
displayed on the RC-898.
in which location operations are carried out, it is
necessary to examine the way in which times are
displayed on the RC-898.
The RC-898 can use one of three time reference
modes to show the tape times of the DTRS units
connected to it, as shown on the timecode indica-
tors [12]:
modes to show the tape times of the DTRS units
connected to it, as shown on the timecode indica-
tors [12]:
ABS
,
REL
and
TC
.
ABS
refers to the absolute time, as determined
from the servo track of the DTRS tape.
TC
refers to timecode read from the timecode
track of the DTRS unit. However, since the RC-
898 does not accept timecode directly, this need
not be actual timecode, but in the case of a DA-98
or DA-88, may be pseudo-timecode, “synthe-
sized” from the ABS values (see 8.1.2, “Synthe-
sizing timecode from ABS times”).
898 does not accept timecode directly, this need
not be actual timecode, but in the case of a DA-98
or DA-88, may be pseudo-timecode, “synthe-
sized” from the ABS values (see 8.1.2, “Synthe-
sizing timecode from ABS times”).
REL
refers to the time value, relative to a user-
defined reference point (see 6.3, “Setting a relative
time reference”).
time reference”).
Cue points may be set “on-the-fly” or entered
manually, and copied from a cue list. All cue
points may be edited and “trimmed” to frame
accuracy.
manually, and copied from a cue list. All cue
points may be edited and “trimmed” to frame
accuracy.
For faster entry and editing, cue points may
optionally be displayed and edited to second accu-
racy, ignoring the “frames” field.
optionally be displayed and edited to second accu-
racy, ignoring the “frames” field.
6.2 Setting the precision
The RC-898 typically displays to frame-based
precision (although in fact, the location and syn-
chronization is to sample precision).
precision (although in fact, the location and syn-
chronization is to sample precision).
However, it is not always necessary to work to this
degree of accuracy, and you may want to save a
degree of accuracy, and you may want to save a
little time by ignoring the “frames” field when
entering and locating to location memories.
entering and locating to location memories.
Accordingly, the RC-898 provides you with a way
to do this:
to do this:
1) From the F menu group, move the cursor to
FrameDisp
and press
SELECT
:
2) Use the
UP
or
DOWN
key to change from
on
to
off
.
When frame display is set
on
, the last two digits
of the display will be used for the frames field of
location memories, and the RC-898 expects frames
to be entered as part of time values. When set to
location memories, and the RC-898 expects frames
to be entered as part of time values. When set to
off
, the frames field is ignored (i.e. always
assumed to be zero).
6.3 Setting a relative time
reference
This operation is equivalent to pressing the “reset”
button on a numerical tape counter to set the value
to “0000”. When the RC-898 is in relative mode,
the time shown on the
button on a numerical tape counter to set the value
to “0000”. When the RC-898 is in relative mode,
the time shown on the
TAPE TIME
display [13]
becomes relative to a zero point which you set.
This zero point is referenced to the first DTRS
unit in the chain.
This zero point is referenced to the first DTRS
unit in the chain.
1) From the F menu group, move the cursor to
DispTime
and press
SELECT
:
2) Use the
UP
or
DOWN
key to change
Absolute
to
Relative
.
The
REL
indicator [12] will light to show that the
RC-898 is now displaying times in relative mode.
NOTE
The location and synchronization accuracy is not affected
by this function.
by this function.
F r a m e
D i s p l a y
o n
D i s p l a y
T i m e
A b s o l u t e