Lens, Back-focus adjusment – Toshiba IK-643A User Manual
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3. LENS_________ _
Back-Focus Adjusment
Back-Focus Is adjusted at the factory to
accommodate most standard lenses. However, at
times, slight adjustment to the IK-643A back-
focus Is necessary.
Mount the Lens to the camea first. Then loosen
the Back-Focus Set Screw. Then rotate the Back-
Focus Adjustment Dial until a clear image is
achieved. Afterwards, tighten the Back-Focus Set
Screw.
Note
When the lens weight is more than 1 kg (2.2 lbs),
support it on the lens side rather than rely on
screw that fix the camera to the tripod.
This camera supports two types of auto-iris lens;
Video-type and DC (direct drive) types. Connect
the auto-iris connector plug to the IRIS terminal
on the side of the camera. Refer to the chart
below for correct wiring and set up.
Adjust by retating the lens
Auto iris lens
Video IRIS
Lens
Direct Drive
IRIS Lens
IRIS
1.
+12V
1. Damp-(y)
terminal
2.
NC
2. Damp+( r )
pin
3.
Video
3. Driver+(wh)
4.
GND
4. Driver-(g)
AES/AI
Al
AI-AMP
Switch
position
position