6FeaturesIntroduction High-sensitivity CCD and bright zoom lensThe CCD features an improved sensitivity and thezoom lens has a large aperture ratio of f1.6 (atWIDE end). These features provide the camerawith a high sensitivity of 2.0 lx in the color mode(50% output, AGC 20 dB). Optical + Electronic zoomingThe 25X optical zoom lens and 10X electroniczoom circuitry allows the camera to be used evenin surveillance situations in which the object is verysmall. DSP with a wide dynamic rangeEven objects that have a large difference in bright-ness can be monitored clearly. Day/Night surveillanceWhen the light is low, the camera pictures can beswitched automatically to black and white pictures.The camera is also compatible with IR illumination(wavelength 850 nm to 880 nm). High-speed pan/tilt tableThe high-speed rotating table with a horizontalpanning speed of 300˚/sec. and a vertical tiltingspeed of 180˚/sec. makes it possible to recall apreset position quickly. Frame RateUp to 30 frames per second in 640 x 480 VGAresolution. Supports MulticastWith Multicast, the same image data can be sentat one time to multiple computers on the networkwithout decreasing the frame rate. Image Recording FunctionEquipped with an image recording function byalarm input. Private masking facilityWhen the camera target area contains an areathat is required to be hidden the camera can beset accordingly in order to mask it. Conventional surveillance camera peripheralcan be usedVN-C655 has a design similar to other CCTV moni-toring cameras, allowing peripheral equipment forsuch cameras to be also used for VN-C655. To save energy, turn the system power off when-ever it is not in use. This camera has been designed for indoor use.It cannot be used outdoors, without optionaloutdoor housing. This camera has been designed to be hung froma ceiling with its base uppermost.Do not install it in an upside down position onsurface or at an angle, as this may cause mal-function or a noticeable shortening of its ser-vice life. Do not install or use the camera in the followinglocations.• In a place exposed to rain or water.• In a place containing vapor or oil soot, for ex-ample in a kitchen.• In a place outside the operating temperaturerange (0˚C to 50˚C).• Near a source of strong radio waves or mag-netism, radiation or X-rays.• In a place where corrosive gasses are gener-ated.• In a place subject to vibrations.• In a place with excessive dust. Insufficient ventilation of the camera may causea malfunction. Be careful not to block ventila-tion to the camera. This unit radiates heat fromthe panel surfaces (top panel and side panels).Do not install it in a place where a heat poolmay form, such as near a wall. Do not install the camera in a place exposed tocold air, for example near to the air outlet of anair onditioner. Otherwise, moisture may becomecondensed inside the dome cover. Do not point the lens at a strong light source, forexample the sun, doing so may cause the cam-era to malfunction.Operating Precautions