Installation; Specifications - VISTA NCL735e Installation

INSTALLATION

Mounting
Two 1/4" 20 UNC mounting points are provided for mounting the camera, one on the top of the case and one on the bottom of the case.
Power Connection
The camera should be powered using a 12V DC power supply unit. Observe the correct polarity when connecting the power, as indicated on the
rear of the camera.
To avoid possible short circuits, the power should remain off until all required connections have been made.
Lens Level Adjustment
When setting the lens level, the AGC function (SW1) should be switched OFF. The lens level potentiometer is used to vary the DC reference voltage
controlling the lens. The potentiometer has the effect of increasing or decreasing the lens aperture and should be adjusted to obtain a 1V pk-pk
setting. When making adjustments, it is best to start with the potentiometer set fully clockwise so that the video signal is overexposed, then,
gradually decrease the level until the setting is correct.
When the lens level is set correctly, the AGC function can be switched ON.
Focusing
The camera back-focus is pre-set to a position that allows optimum performance throughout the focal range of the lens.
The lens adjustment levers are located under the camera lens cover. Remove the cover by pushing down gently and sliding it in the direction
indicated by the arrow on the cover itself. To adjust the lens, loosen and then adjust the T-W lens lever to produce the desired angle of view for
the scene. Tighten the lever once adjustment is complete.
∞
Whilst setting the angle of view, it may also be necessary to make primary focus adjustments. To do this, loosen and then adjust the -N focus lever
until the sharpest possible image for the area of interest is achieved. Tighten the lever once focus adjustment is complete.
CONFIGURATION
On the rear of the camera, there are two configuration switches:
BLC on/off
The Backlight Compensation (BLC) facility compensates for back-lit scenes by enhancing the exposure of objects within the BLC sampling area
(see figure below). These objects would previously have been in silhouette. Select ON or OFF using the BLC switch (SW2). Default is OFF.
AGC on/off
The Automatic Gain Control (AGC) facility can improve picture quality when levels of illumination are low. Select ON or OFF using the AGC switch
(SW1). For most applications, the AGC facility should be ON and is therefore the default setting.

SPECIFICATIONS

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