External Synchronization - Sony VENICE 2 Operating Instructions Manual

121
7. 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 12) of the
unit.
• HDSDI 1.5G digital (Interlaced/PsF/
Progressive)
• HD Y analog (Interlaced/Progressive)
• SD VBS analog
Set the genlock input signal using TC/Media >
Genlock > Input Source (page 76) in the full
menu.
You can also check the genlock status using
TC/Media > Genlock > Reference Lock Type
(page 76) in the full menu, the Home
screen of the sub display (page 36), and the
genlock status indicator (page 14).
Valid input reference signals vary depending
on the project frame rate setting.
Project Valid reference signal
frame
Analog Digital
rate
23.98 1920×1080 47.95i 1920×1080
(23.98PsF) 23.98PsF
1920×1080 23.98P 1920×1080 23.98P
24 1920×1080 48i 1920×1080 24PsF
1920×1080 24P
(24PsF)
1920×1080 24P
25 1920×1080 50i 1920×1080 50i
720×576 50i 1920×1080 25PsF
1920×1080 25P 1920×1080 25P
Project Valid reference signal
frame
Analog Digital
rate
29.97 1920×1080 59.94i 1920×1080 59.94i
720×486 59.94i 1920×1080 29.97PsF
1920×1080 29.97P 1920×1080 29.97P
47.95 1920×1080 47.95i 1920×1080
(23.98PsF) 23.98PsF
50 1920×1080 50i 1920×1080 50i
720×576 50i
59.94 1920×1080 59.94i 1920×1080 59.94i
720×486 59.94i
You can check the genlock status using TC/
Media > Genlock > Reference Lock Type
(page 76) in the menu.
[Notes]
• If the reference signal is unstable, genlock is not
possible.
• The subcarrier is not synchronized.
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 76) in the menu to Preset F-Run
(Ext-Lk).
2
Supply an HD or SD reference video signal
to the GENLOCK IN connector (page 12)
and a reference timecode synchronized
with that signal to the TC IN (page 12)
connector.
The built-in timecode generator of your unit
locks to the reference timecode, and the
message "Ext-Lk" is displayed on the Home
screen of the sub display.
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]
• Check that the reference timecode and the reference
video signal are in a phase relationship that complies
with the SMPTE timecode standards.
• When you finish the above procedure, the timecode
is 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.
• If the frequency of the reference video signal and the
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.
• When the connection is removed, the timecode
advance may shift one frame per hour with respect to
the reference timecode.
To release external lock
Change the TC/Media > Timecode > Mode
(page 76) setting in the menu.