Input Of External Synchronizing Signal (Genlock) - JVC GY-HM790CHU Instructions Manual

Connecting External Devices
Input of External
Synchronizing Signal
(Genlock)
This camera recorder is equipped with a genlock input
terminal on the side.
Synchronizing signals can also be input from a KA-M790G
unit (Multicore Remote Adapter: sold separately) that is
connected to the accessory connection terminal (68 pin) at
the rear of the camera recorder.
The following describes the case of signal input using the
side [GENLOCK INPUT] terminal.
Input the external synchronizing signal from the
[GENLOCK INPUT] terminal, and synchronize the camera
recorder's video and playback images with the external
signal.
You can also adjust the H (Horizontal) phase of the camera
recorder's video signals with respect to the external
synchronizing signals on the [Genlock Adjust] screen of the
[Others] menu. (A Page 96)
Only horizontal (H) and vertical (V) genlock are supported.
The camera recorder does not come with an SC (subcarrier)
lock function.
Synchronizing Signal to Use
SD
synchronizing
signal
: BB (Black Burst) signal
Supports SMPTE170M(RS-170A)-NTSC
Supports ITU-R BT.470-6 PAL
HD
synchronizing
signal
: HDTV 3 level synchronizing signal
Supports SMPTE296M-HD720p
Supports SMPTE274M-HD1080i
Note :
● The genlock function can only be used in the Camera
mode. It is not available in the AUX mode (U model only)
and Media mode.
[GENLOCK/AUX IN] Terminal (U Model)
[GENLOCK INPUT] Terminal (E Model)
SYNC Signal
Generator
Video Equipment
126
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[GENLOCK/AUX] Switch
(U Model only)
External Synchronizing
Signal
External
Synchronizing
Signal
1
Set the camera recorder to Camera mode.
2
Set [Genlock Input] in the [Others] menu to ABNCB.
(A Page 93)
Memo :
● During input of synchronizing signals from the accessory
connection terminal (68 pin) at the rear of the camera
recorder, set to AAdapterB.
3
Set the [GENLOCK/AUX] selection switch to
AGENLOCKB. (U model only)
4
When in the standby or stop mode, input
synchronizing signals from the SYNC generator to the
[GENLOCK INPUT] terminal.
● When the camera recorder's video is locking to the external
synchronizing signal, ASYNC LOCKINGB appears on the
screen.
● After locking to the external synchronizing signal is
complete, the display disappears and recording can be
performed.
Note :
● When the frame rate is set to 30p, 60p, 60i, or 24p in the
[Frame & Bit Rate] item of the [Record Format] menu, 59.94 Hz
synchronizing signals (vertical synchronization) are input.
50 Hz/60 Hz synchronizing signals are not synchronized.
● When the frame rate is set to 25p, 50p, or 50i in the
[Frame & Bit Rate] item of the [Record Format] menu, 50 Hz
synchronizing signals (vertical synchronization) are input.
59.94 Hz/60 Hz synchronizing signals are not synchronized.
● Do not connect or disconnect the input cable for the
synchronizing signals during recording or playback.
● If the power is turned ON during input of external
synchronizing signals, vertical oscillation may occur. This is
not a malfunction.
● Signals such as VTR playback signals with jitters may not be
synchronized.
● The camera recorder does not come with an SC (subcarrier)
lock function. Color flash may occur during switching such as
when composite signals are used by a switcher.