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== Summary == Although most electronics are available with satisfactory performance in DC models, televisions (TV) are a different matter. Miniature TVs are available in DC but larger ones are all AC. There are many different technical specifications between TVs but the goal for you and your guests is simply the experience of picture quality or what is called presence.<ref>http://www.wilcoxlab.yorku.ca/PresencePapers/Lombardetal2000.pdf</ref>  In a small sailboat or cruiser you are likely to prefer a DC model designed for recreational vehicles. In a larger powered boat, with a goal of minimising AC consumption and inverter size, a 50-inch 720-pixel (720p) LED-LCD with a 9-foot (ft) viewing distance is probably optimum. Plasma delivers a better experience but is losing the market because LED-LCD is cheaper to manufacture and can deliver higher resolutions, with less energy consumption. [http://www.displaymate.com/ Displaymate] has an excellent report discussing [http://www.displaymate.com/Display_Myths_Shattered.pdf how to evaluate TV displays].

* [https://en.wikipedia.org/wiki/Plasma_display Plasma]&mdash;Plasmas use ultraviolet (UV) light created by igniting pockets of gas to excite red, green, and blue phosphors in the screen.* [https://en.wikipedia.org/wiki/LCD_television LCD]&mdash;(Liquid Crystal Display) use color filters and LCDs to block or reveal light from an additional cold cathode fluorescent (CCF) backlight. * [https://en.wikipedia.org/wiki/LED-backlit_LCD_display LED-LCD]&mdash;(Liquid Crystal Display-Light Emitting Diode) HDTVs use LED backlighting instead of the cold cathode fluorescent backlighting used by most other LCD.* [https://en.wikipedia.org/wiki/OLED OLED]&mdash;(Organic Light-Emitting Diode) passes electricity through certain organic materials that glow in red, green, and blue to create a TV image. No other TV technology creates light directly like this. <pre>LCD with CCF are no longer manufactured and are only available used.</pre> === Over the Air === Over the air (OTA) reception requires an antenna or satellite dish and a tuner in the TV or a separate component. A separate component will give the most flexibility. Historically for analogue broadcasts each country used one of three different broadcast standards: [https://en.wikipedia.org/wiki/NTSC NTSC] in North, Central and Andean South America; [https://en.wikipedia.org/wiki/SECAM SECAM] in France, the former USSR and Central West Africa; and [https://en.wikipedia.org/wiki/PAL PAL] in Europe and most of the rest of the world. However, the world is adopting Digital television (DTV) and proliferating an even larger number of standards.<ref>https://en.wikipedia.org/wiki/Digital_television</ref> Most DTV OTA direct transmissions are low power and only useful at maximum distances of ~30 miles. The world is moving to streaming video via Internet and less and less by cable. Boats typically use [[MarineSatellite|marine satellite]] to subscribe to cable packages. The DTV OTA standard in North America is [https://en.wikipedia.org/wiki/ATSC_standards ATSC].

The optimal viewing distances at which the human eye can best process the details in a HDTV resolution of 1080 is called the [https://en.wikipedia.org/wiki/Bernard_J._Lechner#Lechner_distance Lechner distance].

This can be confusing. The higher the resolution, the closer you need to sit to see all the detail in the image (details are smaller).<ref>http://gizmodo.com/5280355/guess-what-many-of-you-wasted-money-on-your-1080p-tv-but-theres-hope</ref> there There are specific distances at which the human eye has the best chance of processing all of the detail that HDTV resolution has to offer. At greater distances a 720p TV may be a better choice (see Tables below).An ultra-high definition 4k TV will have you sitting a few feet from a huge screen, craning your neck upwards, just like in the front row of the movie theatre.<ref>http://www.cnet.com/news/why-4k-tvs-are-stupid/</ref> Different types of TV have different capabilities in resolution: * LED-LCD is easier to manufacture in higher resolutions* Plasma has limits

On your TV, contrast controls only the bright parts of the image. Set this too high, and you’ll lose wash out detail in clouds, snow, etc. Set it too low, and the image will look flat and dark.

However, LCDs are taking over the market and are made in a wider range of sizes than plasma screens. The sweet spot targeted by LCD manufacturers is 42 to 50 incheswell known for motion blur.<ref>http://www.displaymate.com/LCD_Response_Time_ShootOut. htm</ref> LCDs can show ‘ghosting’ trailing after a fast-moving image.

However, LCD has taken over the market and are made in a wider range of sizes than plasma screens. The sweet spot targeted by LCD manufacturers is 42 to 50 inches. The viewing angle of both is similar. The However, the image quality of a plasma TV is good when viewed off to the side; whereas an LCD TV will lose contrast or brightnessand colour accuracy. <ref>http://www.cnet.com/news/led-lcd-vs-oled-vs-plasma/</ref> <ref>http://www.displaymate.com/LCD_Plasma_ShootOut.htm</ref> This is an important consideration in a salon with fixed furniture. If you have a wide viewing area plasma will give a better experience. But overall, LCDs are up to four times brighter, so better for daytime viewing.