A
ND
AGC ON/OFF switch
This switch is provided for the AGC circuit.
The AGC circuit incorporated into the camera boosts the sensitivity
automatically when the scene illumination is insufficient.
switch
This camera can operate independently, using its internal
controlled sync generator, or it may be synchronized, usually
known as line-locking.
To select one or the other of these sync
modes, set the DIP switch on the rear panel to either LL or INT.
If line-locking is selected, all the cameras in the system must be
adjusted to begin the video field scan at the same time. This is
described in the following procedure.(g)
V-phase adjustment potentiometer
This potentiometer is set fully counterclockwise at the factory.
If two or more cameras are connected to a switcher and the picture
on the monitor rolls while switching from camera A to
adjusting
the vertical phase (V-phase) of the cameras will probably eliminate
the rolling.
If this adjustment is necessary, it should only be
performed by a qualified technician.
Before making any adjustment, confirm that cameras A and B
are connected to the power supply with the same polarity.
To make an adjustment, follow the steps below.
While observing the video output signals from both cameras on
an oscilloscope, turn camera A’s V-phase
control (on back of camera) until vertical
sync from both cameras are in phase.
2. If camera A’s adjustment range is
insufficient, adjust
B’s V-phase
control in the opposite direction to
camera A until they are in phase.
3. If these adjustments do not bring vertical
sync from both cameras in phase, recheck the
polarity of the power supply connections.
“V-phase” control
(variable resistor)
V-phase
