Camera Synchronization
hen the V910 is being powered by 24 VAC, camera synchronization is line
W
u
locked. If there is more than one
nit in a system, the cameras have to be synchronized to ensure there is no disruption of video display. If the
tion, the camera board is already set in line lock mode by
camera will be used in a line lock video applica
default. The use of line-locking synchronization using a V-phase potentiometer (pot) is typically included in
video equipment requiring external video synchronization. As an example, equipment like a video switcher
unit uses the camera’s line lock to reduce “video jump” on its monitor during camera switching. The
adjustment for the line lock V-phase (VR1) is on the bottom board of the camera. The V-phase pot allows
video to power line phase adjustment up to 180
°
. If more than 180
°
of adjustment is required, swap the lines
attached to the 24 VAC terminal block connector. Be sure that the selector switch is set to position “LL”
shown in Figure 7. Note that the performance of the camera’s line lock depends on the quality of the power
source. If the camera experiences roll or jitter due to the quality of the power source, then it is best to set the
camera to internal “crystal” mode. This is done by setting the selector switch to “INT.” as shown in Figure 7.
Camera/Lens Adjustments
After all cabling is complete, the camera and lens can be adjusted.
Switch Settings
lection of: Switch 1 - ALC (OFF) or ELC
N); Switch 2 – Internal (Crystal) Synchronization (ON) or Line Lock (OFF); Switch 3 – AGC (ON or OFF);
Switch 4 – BLC (ON or OFF). ALC settin
LC setting is for internal autoiris. Refer
to Figures 6 and 7 for the location and se
in the sharpest picture possible, the iris
ont ring and the telephoto/wide adjustment is the end ring; iris is fixed. On autoiris lenses, iris
adjustment may be required if th
color. There is a potentiometer
(VR1) on the camera front boar
rning the potentiometer opens
There is a DIP switch on the front camera board that allows the se
(O
g is for external autoiris and E
tting of the switches. To obta
adjustment should be made from a “full bright” setting down to an acceptable video level. This assures that
the internal AGC of the camera is not operational. The day/night camera includes a switch to select having
the day/night feature turned ON or OFF. If day/night is turned ON, at a low light level the camera changes to
monochrome mode and the resolution and sensitivity increase. See Table 3 for camera and lens
specifications.
Lens/Autoiris Adjustment
The manual iris lens can be manually adjusted for focus and angle of view. On the lens, focus (near to
infinity) is the fr
e picture appears dark or grainy or has poor
d to adjust the autoiris. Refer to Figure 6. Tu
and closes the iris to regulate light extremes. Turning the potentiometer clockwise opens the iris wider,
allowing more light.
8
•
Installation
XX137-00-03 Rev 504 Roughneck V910 Dome Cameras
Summary of Contents for ROUGHNECK V910
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