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Two security camera system technologies are used for imaging in board cameras: CCD and CMOS. CCD stands for charged coupled display and it is also used for imaging in a fixed security camera system. The CCD converts light into electricity that represents picture information. Common CCD sizes are 1/3” and ¼”. 1/3” is currently the standard but larger sizes, such as 2/3” and ½” do exist. CMOS stands for Complementary metal–oxide–semiconductor. It also converts light to electricity but CMOS offers greater integration of functions, allowing for smaller overall size, and can operate at lower power requirements. The tradeoff has been at the expense of image quality. With modern security camera system technology, however, lines have been blurred as CCD cameras have lowered their power requirements and the image quality of CMOS chips have gotten better.
Most Dome cameras are plug and play, allowing them to connect directly to a TV or VCR. They operate using an AC adapter or batteries as a power supply. Transmitter and receiver combinations are available that allow for wireless board security camera system applications. Board Cameras are basically a fixed lens mounted on a circuit board. These cameras are often used in mini cameras, dome cameras and for making hidden cameras but are also sold unpackaged, for mounting by the buyer. Lenses in these cameras are either of a full opened lens or pinhole in which the opening of the lens is very small. Pinhole lens cameras are often called "spy" cameras and are most often used in making hidden cameras. All of our hidden cameras are examples of hidden board cameras. Lenses in board cameras are pre-mounted and have a fixed iris. In most cases they have a short focal length (the distance between the surface of the lens and it's focal point) which results in a wide angle of view. Our board cameras have a lens between 3.6 and 6mm. Because board cameras have some many fixed features they are limited to what they can be used for. However, they offer a low cost solution to security needs especially hidden camera situations. Features: Built with Ray Gold Board 480 TVL Resolution 10-bit DSP Sony 1/3" Format Super HAD CCD Sensor Super Sensitive Low Lux Image Capture Ultra Clear Image Performance Noise Free Image at Low Light 8 DIP Switches for Professional Installation Setup 6 Types White Balance Setup with (DIP1.2.3*) Shut.-Fixed (Fl-Free)1/100 or 1/120 with (DIP4*) AGC High/Low Setup with (DIP5*) Back Light Compensation On/Off with (DIP6*) Electronic Auto Iris/Manual Iris with (DIP7*) Auto Exposure/8 Types Fixed with (DIP8*) Wide In-put Voltage Range (DC7.5V to DC 18V) Power Consumption(70 mA/ DC12V) Optically Corrected Top Dome Cover Technical Specification of Dome Camera Image Sensor : Sony Super HAD 1/3" Scanning system : 2:1 Interlace Scanning frequency (H) : 15734 Hz Scanning Frequency : 59094 Hz Sync. System : Internal Signal system : 525 lines Total effective pixels : 380K Lens Type : 1/3" Camera with 92 degree view angle (Diagonal) S/N Ratio : More than 48 db (ACC DFF) Gamma : 0.45 Resolution : 480 lines Video Output level : 1.0 Vp-p (75 Ohms, composite) Focus Mode : Manual Min. illumination : 0.3 Lux (F 1.2) White Balance : Adjustable With DIP Switches Shutter Fixed : Adjustable with Dip Switches AGC : Adjustable With DIP Switches BLC : Adjustable With DIP Switches Iris : User Selected IRIS Mode Manual Iris & Auto Iris Exposure (AE/ME) : User Selected DIP Switch. Supplied Voltage : DC 7.5V - 1.8V (Recommendation DC 12 + 0.5V) Current consumption : 70 mA @ 12 VDC Dimensions : 68.81mm (Base Diameter) X 53.0 mm (H) X 53.6 Weight : Approx. 95 grams
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