8
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Installation
XX028-06-00 Rev 1002 Surveyor4 Fixed-Position Camera Dome
Figure 5
Power Connections
Camera Synchronization
If there is more than one unit in a system, the cameras have to be synchronized to ensure there is no roll of
video. If the camera will be used in a line lock video application (color camera only), the camera interface board
is already set in line lock mode by default. Camera synchronization is DIP switch selectable, line locked or
internal. 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 is accessed on the top of the enclosure as shown in Figure 5. 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 DIP switch is set to position “LL”
shown in Figure 6. 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 6.
