Sony DSR-300 Service Manual page 42

Setting Time Values
6
Use the TC mode switch 2 to set the desired
running mode.
Operation Setting
Time code advances freely regardless of F-RUN
the VCR's current operation mode.
Time code value advances only while R-RUN
recording.
If you select F-RUN, the time code starts
advancing immediately.
Drop-frame mode (for DSR-300 Only)
In the NTSC standard, the time code value is based on
30 frames per second, but the exact video frame
frequency is in fact 29.97 frames per second and the
real time, or 18 frames per 10 minutes.
Drop-frame mode corrects for this by skipping two
frame counts at the beginning of every minute which is
not a multiple of ten.
Example: When the minute value is changing from
11 to 12
00: 0 5: 1 1: 2 9
00:05:12:00
00:05:12:01
These two are dropped.
00: 0 5: 1 2: 0 2
In non-drop-frame mode, however, no frame counts
are omitted, and there is a gradual deviation of the time
code from real time.
Making the time code continuous at back
space editing
Set the TC mode switch 2 to R-RUN and start back
space editing.
For operation of back space editing, see "Back Space
Editing" on page 55.
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Chapter 3 Shooting
Restarting an interrupted recording
Perform the following steps to make the time code
continuous when the recording has been interrupted or
when the cassette tape has been removed from the
camcorder between shootings.
1
Set the TC mode switch 1 to REGEN.
Time code advance is automatically set to R-RUN
even if the TC mode switch 2 has been set to F-
RUN.
2
Perform steps 1 to 6 of "Starting Back Space
Editing at Any Tape Position" on page 55.
When the camcorder is at the recording pause
state, the recorded time code is read from the tape
and synchronized to the internal time code
generator.
3
Press the VTR button on the camcorder or lens to
restart back space editing.
Setting the time code to the real time
clock and calendar
Set the TC mode switch 1 to DATE/TIME.
This synchronizes the time code generator to real time
(recorded in the user bits) and date (recorded in the
time code), using the real time clock and calendar set
in menu 101.
Once you set this switch to DATE/TIME position, it is
not possible to retrieve the previous value (user bits
and time code) in the time code generator.
For how to set the real time clock and calendar, see
"Setting the Real Time Clock and Calendar — Menu 101"
on page 93.
Synchronization With External Time Code Signals — Gen-Lock
To edit and compile a recording that is shot using
multiple camcorders, it is necessary to synchronize the
video and time code of the various camcorders (by
gen-lock).
Connection for gen-lock
Connect the reference video and time code signals to
the camcorder as shown below.
Locking the video and time code signals to an
external reference signal
GEN LOCK IN
TC IN
Locking the video and time code signals to
another camcorder's video and time code
signals
Using one camcorder as reference, to its video and
time code signals, lock the other camcorders' video
and time code signals.
VIDEO OUT
TC OUT
Locked camcorder
TC IN
GEN LOCK IN
Reference camcorder TC OUT
VIDEO OUT
a) The output signal from the MONITOR OUT connector on the DSR-300/300P may discontinue when switching the
operation between recording and playback. Use the output signal from the VIDEO OUT connector.
Note
Synchronization with external time code signals (by
gen-lock) may be disallowed in some cases at
ClipLink shooting. For details, see step 4 on page 66
in "ClipLink Shooting"
Reference video signal
Reference time code signal
If the reference camcorder is gen-locked to an external
reference signal, any other connected camcorders are
gen-locked to the same reference signal.
Composite video signal (used as reference video signal)
Time code signal (used as reference time code signal)
a)
a)
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Chapter 3 Shooting