External Synchronization - Sony VENICE MPC-3610 Operating Instructions Manual

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5. Connecting External Devices

External Synchronization

When shooting with multiple units, synchronized
recording can be performed using a specific
reference signal to synchronize the timecode
among all the units.
Synchronizing the Phase of the Video
Signal (Genlock)
Genlock operation is enabled by supplying one of
the following reference signals to the GENLOCK IN
connector (page 10) of the unit.
ˎ HDSDI 1.5G digital (Interlaced or PsF) ˎ
ˎ HD Y analog ˎ
ˎ SD VBS analog ˎ
Set the genlock input signal using Technical >
Genlock > Input Source (page 57) in the full
menu.
Valid input reference signals vary depending on
the project frame rate setting.
Project frame rate Valid reference signal
23.98P 1920×1080 47.95i (23.98PsF)
24P 1920×1080 48i (24PsF)
25P 1920×1080 50i
720×576 50i
29.97P 1920×1080 59.94i
720×486 59.94i
50i 1920×1080 50i
720×576 50i
50P 1920×1080 50i
720×576 50i
59.94i 1920×1080 59.94i
720×486 59.94i
59.94P 1920×1080 59.94i
720×486 59.94i
You can check the genlock status using Technical
> Genlock > Reference Lock Type (page 57) in
the menu.
[Notes]
ˎ If the reference signal is unstable, genlock is not possible. ˎ
ˎ The subcarrier is not synchronized. ˎ
Synchronizing the Timecode with
Another Device
Set the unit that supplies the timecode to a mode
in which the timecode output keeps advancing
(Free Run mode).
1
Set TC/Media > Timecode > Mode (page 51)
in the menu to Preset F-Run (Ext-Lk).
2
Supply an HD or SD reference video signal to
the GENLOCK IN connector (page 10) and a
reference timecode synchronized with that
signal to the TC IN (page 10) connector.
The built-in timecode generator of your unit locks
to the reference timecode, and the message "Ext-
Lk" is displayed on the screen.
Once about ten seconds have elapsed after
the timecode locks, the external lock state is
maintained even if the external timecode source is
disconnected.
[Notes]
ˎ Check that the reference timecode and the reference ˎ
video signal are in a phase relationship that complies with
the SMPTE timecode standards.
ˎ When you finish the above procedure, the timecode is ˎ
immediately synchronized with the external timecode,
and the time data indication will show the value of the
external timecode. However, wait for a few seconds until
the timecode generator stabilizes before recording.
ˎ If the frequency of the reference video signal and the
ˎ
frame frequency are not the same, lock cannot be
acquired, and the unit will not operate properly. If this
occurs, the timecode will not acquire successful lock with
the external timecode.
ˎ When the connection is removed, the timecode advance ˎ
may shift one frame per hour with respect to the
reference timecode.
To release external lock
Change the TC/Media > Timecode > Mode
(page 51) setting in the menu.