Panasonic WJ-SX550A Operating Instructions Manual page 11

Camera, Pan/Tilt Head Control and Camera Synchronization
In addition to controlling the crosspoint switches, the Matrix Switcher can also control external devices such as Pan/Tilt Head
Units, Zoom Lenses and auxiliary circuits through the use of Control Data multiplexed with the video signals.
Also, in cases of Panasonic Matrix Switchers, a unique signal called VD2 is multiplexed with the video signals and is used to syn-
chronize Panasonic cameras to prevent picture rolling during switching between cameras.
1
Combination Camera
Signal
Control Data
Status Data
Synchronizing
Signal (VD2)
Coaxial cable
Video Signal
Control
Status Data
Sync. Signal (VD2)
Controls pan, tilt, zoom, focus, iris control shutter speed, back light setting, preset
position, auxiliary control, wiper and defroster.
Sends camera setting information
Unique VD2 signal is sent to Panasonic cameras to synchronize the cameras with the
Matrix Switcher, thereby preventing rolling during camera picture switching.
No
SYNC
(VD2 OFF)
SYNC
(VD2 ON)
Data
multiplex
Sync
signal
All channels provided
with data multiplex and
sync (VD2) generator
as standard features
Function
s s
s
-8-
Matrix Switcher
Crosspoint Switch
SW11 SW21 SW31 SW41
SW12 SW22 SW32 SW42
SW13 SW23 SW33 SW43
SW14 SW24 SW34 SW44
SW15 SW25 SW35 SW45
SW16 SW26 SW36 SW46
SW17 SW27 SW37 SW47
SW18 SW28 SW38 SW48
s