User manual PHILIPS VCM7178

[. . . ] 12 Tips for maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Read these instructions, before taking your system in operation. g 3 Introduction This camera is especially designed for the Philips Observation System. It can be used in combination with a system monitor (System, Quad or Slave). [. . . ] 12 Direct the camera at the object or area you want to observe (8). 13 Tighten the knob (4) and screw (5) when the camera is in position. 8 5 7 100m 200m 4 0X1 0-50m 300m 24V + 0 6 CL 66610005_303. AI g 7 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. Connect the adaptor to the mains and to the external supply socket (7) at the back of the camera. Focus adjustment 1 · 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. R< FA > NEAR Back-focus adjustment · · · · · Caution: Back-focus adjustment is only necessary when no CL 66610005_304B. AI 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. 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. 1 2 R< FA > NEAR 3 CL 66610005_305. AI g 8 Camera sound on/off Use switch (9) to enable or disable the built-in camera microphone. Outdoor use For outdoor use a protective cover has to be used to protect the camera. Remark: When the camera is used outdoors an auto-iris lens is recommended. 9 On Off CL 66610005_306. AI Using a different lens The CS-mount of the camera allows you to use other lenses. The field of view (= covered area) of an 8mm lens is half of the field of view of the 4mm lens (see figure below). Lenses available are: 4mm/F1. 2 lens 8mm/F1. 2 lens 4mm/F1. 2 auto-iris lens 8mm/F1. 2 auto-iris lens d The cameras are supplied either with the 4mm or 8mm lens. Horizontal field of view in meters (V) V 10 8 Focal length of the lens The auto-iris lenses are recommended when the camera is used in environments with variable light conditions (eg. By means of the auto-iris the amount of light going through the lens is regulated. The auto-iris is DC-controlled through a 4-pole connector at the back of the camera (3). 4 mm 6 8 mm 4 2 0 0 2 4 6 8 Distance object to camera in meters (d) 10 CL 66610005_308A. AI g 9 The pin connections of the auto-iris connector are: pin 1 = control coil pin 2 = control coil + pin 3 = drive coil pin 4 = drive coil + 42 All lenses have the same light sensitivity. 31 CL 66610005_309. AI g 10 Changing a lens · · Perform the following steps to change a lens: Point the camera downwards. [. . . ] 48dB at 200-25000 lux, 25°C range 2500-6500K audio: common mode 500mVpp video: differential mode 175mVpp with pre-emphasis of 12dB at 5MHz. In the dual twisted pair system cable one pair carries the audio signal and the videosignal, the other the power supply and the synchronisation pulses. Built-in, can be switched off at the camera. [. . . ]