Philips VCM7177 manual Focus adjustment, Back-focus adjustment

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14Check if the cable length compensation (6) selector is set to the correct length. The length set must be the same as the length of the system cable (0-300m/900ft max.) connecting monitor and camera.

Remark: If the length of the system cable is more than 200m/600ft, a mains power adapter (optional) should be used (the max. allowed cable length is 300m/900ft). Connect the adaptor to the mains and to the external supply socket (7) at the back of the camera.

Focus adjustment

∙Adjust the focus ring of the camera lens to obtain optimal image sharpness.

Remark: If still no sharp object image is obtained, you should adjust the back-focus of the camera.

Back-focus adjustment

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Caution: Back-focus adjustment is only necessary when no sharp object image is obtained with the focus adjustment ring.

∙Set focus adjustment ring to Far or Infinity (1).

∙Aim the camera at an object at least 15 metres/45 feet away.

Remark: When bright light sources are positioned within thecamera view field; dim the light source.

∙Loosen the back-focus locking ring (2).

∙Rotate the lens, including the CS-mount ring, until the video image on the monitor is sharp.

∙Tighten the back-focus locking ring (2), while keeping the lens in place.

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