Bosch EX65, Instruction Manual

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38 en | Maintenance EX65 Explosion-protected Camera
F.01U.412.061 | 2.0 | 2011.08 Instruction Manual Bosch Security Systems, Inc.
2. Remove all connections at the back of the camera.
3. Locate the mounting bolt for the camera on the bottom of the sliding tray and remove the
bolt with a #3 Phillips screwdriver.
4. Remove the camera from the mounting tray.
5. Remove the lens from the camera.
10.4 Installation of the Camera and Lens
1. Install a new lens onto the camera.
2. Ensure that the camera and the lens are directed to the front and are parallel to the
sliding tray.
3. Reinstall the mounting bolt with a #3 Phillips screwdriver. Tighten the camera mounting
bolt to 3.3 ft-lb (4.5 N-m).
4. Complete the back focus adjustments as described in section 10.5. Attach all of the
connections at the back of the camera at the same connection points as when removed.
5. Reinstall the sliding tray back into the housing as shown in steps 9 - 12 of
Section 6 Configuration, page 20 .
10.5 Back Focus Adjustment
To optimize picture sharpness in both bright and low-level lighting, adjust the back focus. Use
the camera's unique Lens Wizard. This ensures that the object of interest always remains in
focus, even when focusing at the maximum lens iris opening (for example, at night).– When
back focusing varifocal lenses, adjust to obtain a sharp picture in both wide-angle and tele
positions for both far and near focus.– When back focusing zoom lenses, ensure that the
object of interest remains in focus throughout the entire zoom range of the lens. To adjust
back focus:
1. Open the side door panel at the side of the camera.
2. Unlock the back focus locking button.
3. Press and hold the center key for more than two (2) seconds until the Install menu
appears.
4. Select Lens Wizard and move the cursor to the Set Back Focus Now option.
5. Turn the back focus adjustment as necessary.
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