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'''CRT''' (or '''cathode ray tube''') TVs are the old kinds of TVs that older consoles were designed to output to. They typically accepted signals with a 15.7kHz scan rate under NTSC or PAL standards. They are usually preferred for gaming because of its better motion, response times, and lower input lag compared to LCD TVs. CRT TVs have scanlines which help reduce the pixelation of older games.
[[File:Slot mask vs aperture grille.jpeg|thumb|350px300px|right|Shadow (slot) mask vs aperture grille]]
They come in several forms:
**May actually force and scale to a resolution non-native to the input. HDTVs that scale EVERYTHING to 1080i aren't rare. That defeats the purpose of avoiding scaling (no input lag, native resolution, etc.), but you still get the other benefits (minus the "no input delay").
*No [https[wikipedia://en.wikipedia.org/wiki/Input_lag |input delay]]
*Very fast [https[wikipedia://en.wikipedia.org/wiki/Response_time_%28technology%29 |response times]]. Often referred to as phosphor delay.
*True black levels
*Most CRT HDTVs have either DVI or HDMI ports which can accept as low as 31kHz (480p at 60Hz) from a PC. They do not support 120Hz to force 240p resolutions while doing this.
====Recommended CRT TV Modelsmodels====Sony's PVM/BVM series and NEC's XM/XP series are considered god-tier. If you cannot find those specific models, look for presentation monitors, professional monitors, or broadcast monitors from any brand. If you search for "video monitor" on craigslist, you may have luck finding one. Sony [https[wikipedia://en.wikipedia.org/wiki/Trinitron |Trinitrons] is ] are pretty easy to find, and they're on the high-end of consumer-grade CRTs. Sharp, Toshiba, and Phillips higher-end CRTs are pretty close in quality, so don't be afraid to pick one of those up. Test Make sure to test it before you buy. Also, and also check the back and to see what ports it has. If you're in North America, coax and composite (red , white , and yellowports) are the most common, but you'll get the best picture quality running your system through component ports (red, green , and blue video ports with red and whiteports for audio) ports. If a component is not available, look for [https[wikipedia://en.wikipedia.org/wiki/S-video |S-video]] instead. It will look slightly worse than component, but since it is on a CRT, the picture will still looks look good.
If you are in a PAL region or Japan, look for a TV with RGB SCART or RGB JP-21 (same connector, but different signals). Note that just because a CRT has a SCART/JP-21 port, it doesn't mean that it supports RGB. It could just be composite through a different connector. If you are in Japan, you can also look for D-Terminal on the back, which uses YPbPr instead of RGB (similar to the component cable in other NTSC regions). Just make sure to avoid "100Hz," widescreen(note: some European widescreen CRTs still can display native 15KHz, in which case, it is a good one to pick up), "high dot pitch," or "HD CRTs," as they tend to scale or distort the image in some way like modern HDTVs, with a few exceptions. This also applies to NTSC regions (minus "100Hz"). This does not apply to video monitors, as mentioned in the paragraph above.
You could also look for a 15KHz-compatible PC monitor (see below) or an arcade monitor, although you may have to adapt the input to work with it.
====External Linkslinks====
*[http://pastebin.com/1Ri5TS3x /vr/ CRT pastebin (WIP)]
==CRT Monitorsmonitors==
'''CRT monitors''' are CRT displays that are intended to be used from a PC, typically being driven by an RGBHV signal with a 31kHz or higher scan rate through a 15-pin VGA cable.
[[File:Slot_mask_vs_Dot_mask.jpeg|thumb|350px300px|right|21" Slot mask CRT TV vs 17" Dot mask CRT monitor]]
[[File:CRT_resolutions.jpg|thumb|250px|right|Comparison of resolutions on a common CRT monitor. From left to right: 240p - 480p - 960p]]
In GNU/Linux or *BSD, you would use gtf and xrandr to use custom resolutions. [https://wiki.archlinux.org/index.php/Xrandr#Adding_undetected_resolutions See here].
====Recommended CRT Monitorsmonitors====
Please add to this list if you have a specific model CRT monitor that you recommend for using with emulation.
*'''[http://www.cnet.com/products/monitor-dell-e771p-17-16-vis-grey-crt-monitor/specs/ Dell E771p]''' - Very common CRT monitor. Able to boost color level intensity, allowing 240p with black frame insertion or 480p with inserted scanlines to have vibrant colors despite 50% brightness. Capable of up to 1400x1050 @60Hz with custom resolutions, but disallows 1440x1080 for some reason despite being able to display other 1080p resolutions at 60Hz.
====External links====*[https://docs.google.com/spreadsheets/d/1ZPcKlhNiGKJwSoVI-8z5ROf7PyQ5fagRi60Gz_UafvU/edit?usp=sharing VGA CRT Monitors Mega List (WIP)] ==LCD Monitorsmonitors==
All LCD monitors have a native resolution which all output must scale to, unlike CRTs.
====TN panels====
*Fast [https[wikipedia://en.wikipedia.org/wiki/Response_time_%28technology%29 |response times]]
*Cheap prices
**Though IPS glow will be far more visible and troublesome the farther you get from straight on
*Fairly long [https[wikipedia://en.wikipedia.org/wiki/Response_time_%28technology%29 |response times]] (will differ between panels)
**This causes motion blur, ghosting, and delay.
*Some monitors can be 'overclocked' to run at higher refresh rates. Such as the [http://www.tftcentral.co.uk/reviews/qnix_qx2710.htm Qnix QX2710], which can run at 120Hz
**But most cannot resolve every frame of such refresh rates due to [https[wikipedia://en.wikipedia.org/wiki/Response_time_%28technology%29 |response times]]
*IPS glow. A form of backlight bleed that varies with viewing angle. Affects dark areas. Generally makes IPS panels have terrible black levels.
**Some panels may have an issue called 'black crush' which darkens the panel when viewed straightforward.
*Generally mid-range [https[wikipedia://en.wikipedia.org/wiki/Response_time_%28technology%29 |response times]] (will differ between panels).
*At least one officially supported, out of the box, 120Hz panel, the [http://www.tftcentral.co.uk/reviews/eizo_fg2421.htm Eizo Foris FG2412]. No 'overclocking' necessary.
http://scanlines.hazard-city.de/
==External Linkslinks==
*[http://retrorgb.com RetroRGB] - Provides lots of info on displays<br>
*[http://junkerhq.net/xrgb/index.php/240p_test_suite 240p test suite] - Test suite for properly configuring 240p. Designed mostly for CRTs, but will work with any monitor that supports 240p. Available as a homebrew program for several consoles.
