Time Code Chase Operation - Sony PCM-3348HR Operation Manual

7-2 Time Code Chase

7-2-5 Time Code Chase Operation

Windows
In address mode, time code chase operations use three
operation windows to specify the error range for which
re-synchronization is carried out, the variation range
for vari-sync playback, and so forth.
You can set each of these windows at any point during
the operation. The memory backup function does not
operate for the settings of these windows.
Note that although you can set these windows in free
mode, the window settings have no effect in that mode.
• Lock window
If the discrepancy between the playback time code
and the external time code exceeds this window
setting, re-synchronization begins.
Setting range: 1 to 99, 100, 200, 300, 400 or 500
subframes
Default setting: 1 subframe
1
(1 subframe = /
100
•
Display window
If the discrepancy between the playback time code
and the external time code exceeds this window
setting, the PLAY button flashes while re-
synchronization is being carried out to alert the user.
Setting range: 1 to 99, 100, 200, 300, 400 or 500
subframes
Default setting: 2 subframes
If you attempt to set the display window to a value
smaller than the value set for the lock window, the
indication "ILLG" appears in the
display.
• Re-sync window
This window setting determines the range of variation
in the playback speed for vari-sync playback, during
re-synchronization.
When the window setting is narrow: Re-
synchronization varies the playback speed only
slightly in vari-sync playback. This entails a longer
time to achieve synchronization, but the variations in
pitch are less apparent. This technique is referred to
as slow re-sync. This setting is appropriate when
using an analog tape recorder as
When the window setting is wide: Re-
synchronization uses wide variations in the playback
speed for vari-sync playback. This reduces the time
required to achieve synchronization, but makes
variations in pitch apparent.
7-8
Chapter 7 Synchronized Operations
frame)
LOCATE TIME
the master unit.
This setting is
appropriate for following variable speed playback on
a digital tape recorder.
Setting range: 0.2% to 12.5% (0.1% units)
Default setting: 12.5%
Setting the lock window and display
window
Use the following procedure to set the lock window
and display window.
1
Use the numeric buttons to enter two three-digit
numbers for the display window and lock window
in that order.
These values appear in the LOCATE TIME
display.
For example, to set the display window to 8
subframes and the lock window to 4 subframes,
enter 0, 0, 8, 0, 0, 4.
2
Press the STORE, = and 4 buttons in that order.
This saves the values entered in step 1 as the
corresponding window settings. They appear in
the LOCATE TIME display.
TAPE TIME
CTL
TIME CODE
H
RELATIVE
LOCATE TIME
ABSOLUTE
TIMER
H
Display window:
008 subframes
Address mode
Checking the settings of the display window
and lock window
Press the RECALL, = and 4 buttons in that order.
You can check the settings of the display window and
lock window at any point during operation.
CUE
DF
MIN SEC
CUE
MIN SEC FRAME mSEC SF
rg (range)
Lock window:
004 subframes