Ultrak KC5300, Руководство пользователя

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12
A. Choose an object at the farthest range that you wish to look
at with a zoom lens.
B. Make sure the iris of the lens is wide open. (Do this by
adjusting the camera at night or use a welder’s glass in front
of the lens.)
C. Adjust the focus to the stop on the far range.
D. Adjust the zoom on the lens to obtain the widest picture.
E. Loosen the back focus lock screw.
F. Adjust the back focus ring for the clearest picture.
G. Tighten the back focus lock screw.
H. Adjust the zoom on the lens to the far telephoto position.
I. Adjust the back focus ring for the clearest picture.
J. Adjust the zoom on the lens back to the widest picture.
K. Loosen the back focus screw.
L. Readjust the back focus for the clearest picture.
M. Tighten the back focus lock screw.
N. Repeat the previous steps, as many times as necessary, to
maintain a clear picture through the entire zoom range.
2.8 PHASE ADJUSTMENT
Phase adjustment is used in multi-camera systems when power
is supplied from different sources, causing the camera to be out
of phase. This situation affects auto-switching of the cameras by
causing a vertical flip or roll during the switch interval. The
vertical phase adjustment allows the camera’s line lock sync to
be adjusted from 0 to 260 degrees with reference to the zero line
crossing of the ac frequency.
A. Ensure that all cameras are powered from the same
electrical source and wired in a similar fashion.