Time Code Chase; Overview; Time Code Signal Connections - Sony PCM-3348HR Operation Manual

7-2 Time Code Chase

7-2-1 Overview

Time code chasing is a synchronization function
whereby as the tape runs on the PCM-3348HR, a fixed
sync offset is maintained between the playback time
code and the external time code.
There are two modes for time code chase, as follows.
• Address mode
After the initial synchronization with the external
time code is achieved, if the discrepancy between the
external time code and the playback time code
exceeds a predetermined amount, the signals
synchronized, so that the synchronization with the
external time code is maintained throughout the
operation.
• Free mode
After the initial synchronization with the external
time code is achieved, the time code chase function
terminates. Thereafter the unit returns to normal
playback.
These two modes provide different functions as shown
in the following table.
Difference between address mode and free mode
Function
Lock window, display window and
a)
re-sync window settings
Re-synchronization
a)
Slow re-sync operation
Variation of the time offset during
time code chase operation
Variation of the time offset after
time code synchronization
Chasing a time code signal not
synchronized to a video signal
Synchronization to an external
time code signal with the
SYNC CLOCK switch set to EXT
and synchronizing to the
word sync signal
a) For details see "7-2-5 Time Code Chase Operation
Windows" (page 7-8) .
b) After synchronizing to the external time code, the slave
unit is kept in synchronization by the word sync signal
supplied from the master unit.
7-4
Chapter 7 Synchronized Operations
Input the time code signal to the TIME CODE INPUT
connector on the PCM-3348HR rear panel.
are re-
Address
Free mode
mode
Yes No
Yes No
Yes No
Yes Yes
Yes No
Yes No
No Yes b)
7-2-2 Time Code Signal
Connections
Time code signal
PCM-3348HR
TIME
CODE
INPUT
REMOTE-3
TAPE
RECORDER
RM-3348HR

Time code signal connections

Device outputting
the time code
TIME
(VTR etc.)
CODE
OUTPUT