KDL-40 is a model number that Japan-based consumer electronics manufacturer Sony gives its 40-inch high-definition flat-panel televisions with liquid crystal display technology under its BRAVIA brand. As of April 2011, Sony sells four LCD TVs with this model number: the KDL-40BX420 (420), KDL-40BX500 (500), KDL-40BX520 (520) and KDL-40BX523 (523).
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Each Sony BRAVIA KDL-40 HDTV supports a native resolution of 1,920 by 1,080 pixels and features 5.1 surround sound. While the 420 and 500, though, use cold cathode fluorescent lamps for back light, the 520 and 523 rely on a light-emitting diode instead. Also the latter two have additional features such as Internet widgets and video playing capability, Digital Living Network Alliance feature for sharing various digital content, HTML browser and wireless local area networking.
TV System and Connectivity
Each KDL-40 TV uses the Very High Frequency, Ultra High Frequency and cable TV radio frequency signal systems. The channel coverage consists of 2 to 13, 14 to 69 and 1 to 135, respectively. Also, the TV sets adhere to the National Television System Committee colour system. Included are two composite video inputs and an audio output. In terms of analogue audio inputs, the 500 has four, the 420 has three and the 520 and 523 have two. The 500 is the only KDL-40 TV with two component video inputs; the others have one. The most important of the TV's external interfaces, however, is the high-definition multimedia interface InstaPort, which integrates multiple HDMI-compatible devices to a single TV while cutting down the time it takes to switch from one source to another.
Power and Efficiency
Each Sony BRAVIA KDL-40 has an operating voltage range of 110 to 240, as well as a 50/60-hertz line frequency. The 420 and 500 have a maximum power consumption of 180 watts, while the 520 and 523 are more energy efficient at 102W. In standby mode, the power consumption range for the 420 and 500 are 0.25W to 0.35W and 0.23W to 4W, respectively. In this area, once again, the 520 and 523 prove their greater efficiency with their 0.20W-to-0.30W range.
Physical Dimensions and Weight
Without a stand, or pedestal, the 420 measures 39 inches in width, 23 5/8 inches in height and 3 3/4 inches in depth. The 500 has the same height, but a 39 1/8-inch width and 4-inch depth. The 520 and 523 versions of the KDL-40 have a 37 1/4-inch length, 23 1/8-inch height and 1 2/3-inch depth. They also share the same 11.2kg. weight. The 420 and 500 are heavier, weighing 13.6kg. and 164kg., respectively. Each KDL-40 TV has a 300-by-300-millimeter mounting hole complying with Video Electronics Standards Association standards.
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