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Time code/user bit
Time code
The time code is used when the time code signal
generated by the time code generator (time code
signal generator) is to be recorded on the tape, its
values are to be read by the time code reader (time
code signal reader), and the absolute position of the
tape is to be displayed in increments of hours,
minutes, seconds and frames.
The time code is written in the sub-code area (data
area) of the helical track. This enables insert editing to
be conducted independently using the time code
alone. In addition, the VTR’s playback speed can be
read from the stop mode to slow-motion playback up
to high-speed play (approx. 50a normal
speed/approx. 100a when using DVCPRO tape).
The time code values are indicated using the display
and superimpose functions.
TCR 00 : 07 : 04 : 24
ttt t
Hours Minutes Seconds Frames
User bit
“User bit” refers to the 32-bit (8-digit) data frame
among the time code signals which has been released
to users. It enables operator numbers values to be
recorded.
The alphanumeric characters which can be used for
the user bit are the figures 0 to 9 and the letters A to
F.
Setting the internal time code
1
Set the VTR to stop mode.
3
Set the run mode for the time code generator using
setup menu No. 513 (RUN MODE).
REC:
The internal time code generator is advanced
during recording.
FREE:
When the power is on, the internal time code
generator is advanced regardless of the
operation mode.
4
Set the TCG switch to REGEN mode.
REGEN:
In this mode, the continuity of the original time
code prior to editing is maintained.
OA more detailed setting can be performed
using setup menu No. 503 (TCG REGEN)
and No. 504 (REGEN MODE).
PRESET:
In this mode, recording is commenced from the
value which was set by the TC PRESET button.
ODuring automatic editing, whatever has been
selected for the menu No. 504 setting is used
for regeneration even when the TCG switch
has been set to PRESET.
5
Use the TC PRESET button to set the start number
of the time code or user’s bit.
1Press the TC PRESET button. The left-most set
of digits starts flashing.
2To change the value, turn the search dial while
holding down the search button.
3Turn the search dial to select the set of digits
that is to be set. The digits selected start
flashing.
The setting ranges are as follows:
OTime code:
[525i system]
00:00:00:00 to 23:59:59:29
[625i system]
00:00:00:00 to 23:59:59:24
OUser’s bit:
00:00:00:00 to FF FF FF FF
4Repeat steps 2 and 3 to change any other
values.
5Once the start number has been set, press the
SET button.
In the FREE RUN mode, the time code begins
to advance.
6Proceed with the recording or editing.
SD955B
2
Select “TC” using the COUNTER button.