Focus Adjustment; Back-Focus Adjustment - Philips VCM7178/00T User Manual

14 Check 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

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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