3.
If there is strong reflection on the subject when using infrared lighting, the optical
filter may shift from NIGHT mode (black-and-white mode) to DAY mode (color
mode). Use only proper infrared lighting so that the mode does not get switched.
8. GAMMA ON/OFF switch
When switched ON, GAMMA is 0.45; when OFF, GAMMA is 1.
9
,
⑩
V-Phase Adjustment Push Button
This camera is stores the initial data value of V-phase in EEPROM.
NOTE: This camera offers V-phase adjustment over a range of ±180°. If two or more
cameras are connected to a switcher and the picture on the monitor rolls while switching from
camera A to B, 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 qualified technician.
Before making any adjustment, confirm that cameras A and B are connected to a power
supply with the same polarity.
To make an adjustment, follow the steps below.
1. While observing the video output signals from both cameras on an oscilloscope,
press camera A's V-phase control push button (on back of camera) until vertical sync
from both cameras is in phase.
2. If camera A's adjustment range is insufficient, adjust camera B's V-phase control
push button 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.
Camera A's VIDEO OUT
Camera B's VIDEO OUT
Should be in phase
XX135-00-00 Rev 1103 VC565DN Cameras
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