Installation Instructions
CDR Series
11
LENS SELECTION
Suitable lens types are C or CS mount in fixed-iris, manual-iris, auto-iris or direct-drive
versions. Sizes are shown below. Cameras are factory set for CS mount lenses. If using a
C mount lens, rotate either of the back focus screws approximately 30 turns anticlockwise
before fitting the lens.
Lens size
1/3"
1/2"
2/3"
1"
C
D
R
2
2
3
3
A
C
D
R
3
2
2
3
A
C
D
R
5
2
2
3
A
FOCUS ADJUSTMENT
Turn the back focus adjuster screw clockwise or anticlockwise to obtain focus. When the
focus is sharp, turn the adjustment screw 2 or 3 turns anticlockwise. The picture will lose
sharpness. Turn the screw clockwise until focus is once again obtained. If the point of best
focus is passed, repeat the procedure.
The last turn of the back focus adjustment screw
must always be in a clockwise direction
. Do not over turn or force the back focus
mechanism.
Fixed Lenses
Set the lens focus to infinity and view an image greater than 2 metres away. Focus the
image using the back-focus screw. Set the lens focus as required.
Manual Iris Lenses
Open the iris fully and set the lens focus to infinity. View an image greater than 2 metres
away. Focus the image using the back-focus screw. Set the lens focus and iris as required.
Auto-Iris and Direct Drive Lenses
Fully open the iris by covering the lens with a suitable neutral density (ND) filter. Set the
lens focus to infinity. View an image greater than 2 metres away. Focus the image using the
back-focus screw. Remove the ND filter and set the lens focus as required.
Zoom Lenses
Set the lens focus to infinity and fully open the iris by covering the lens with a suitable
neutral density (ND) filter. Zoom out to the widest field of vision and view a distant object.
Adjust the back focus screw until the object is in focus. Next, zoom fully in and adjust the
focus of the lens until the object is again focused. Repeat these steps until the full zoom
range may be viewed with the minimum loss of focus.
