Meta tags:

Headings (most frequently used words):

vga, design, de, ps, signaling, connector, contents, physical, electrical, alternative, connectors, adapters, extenders, cable, quality, db, 15, misnomer, see, also, notes, references, external, links, variant, 55, ddc, mini, bnc,

Text of the page (most frequently used words):
the (117), vga (81), and (61), pin (42), #connector (41), video (30), with (27), connectors (22), edit (22), from (21), are (21), sync (20), ddc (19), used (19), for (18), retrieved (16), this (15), ibm (15), standard (15), signals (15), graphics (14), was (13), display (13), bnc (13), signal (13), cable (13), mini (12), green (12), not (12), original (11), data (11), may (10), analog (10), some (10), other (10), pins (10), rgb (9), vesa (9), also (9), which (9), monitor (9), blue (9), return (9), red (9), use (8), hardware (8), cables (8), that (8), wikipedia (7), different (7), dvi (7), pinout (7), adapters (7), can (7), monitors (7), adapter (7), signaling (7), devices (7), design (7), page (6), composite (6), plug (6), when (6), same (6), because (6), quality (6), one (6), output (6), pgc (6), such (6), toggle (5), all (5), articles (5), computer (5), type (5), audio (5), system (5), archived (5), november (5), edid (5), array (5), shell (5), often (5), being (5), each (5), but (5), port (5), ground (5), compatible (5), modern (5), early (5), information (5), formerly (5), contents (4), search (4), under (4), additional (4), 2026 (4), references (4), 2021 (4), scart (4), displayport (4), hdmi (4), din (4), sub (4), subminiature (4), links (4), extenders (4), converter (4), february (4), channel (4), version (4), pdf (4), hot (4), however (4), variant (4), supported (4), serial (4), misnomer (4), crosstalk (4), typically (4), does (4), multiple (4), between (4), have (4), many (4), vertical (4), horizontal (4), physical (4), several (4), cards (4), male (4), main (4), were (4), key (4), female (4), since (4), bit (4), hide (4), move (4), sidebar (4), table (3), view (3), april (3), url (3), unsourced (3), 2025 (3), org (3), general (3), component (3), digital (3), external (3), com (3), how (3), impedance (3), august (3), 2013 (3), october (3), cite (3), extended (3), identification (3), 2012 (3), ports (3), sometimes (3), will (3), usually (3), multisync (3), see (3), has (3), size (3), well (3), had (3), called (3), long (3), there (3), coaxial (3), them (3), mhz (3), without (3), these (3), simple (3), rates (3), including (3), include (3), like (3), interfaces (3), possible (3), carry (3), those (3), been (3), professional (3), article (3), alternative (3), further (3), electrical (3), 1987 (3), ddc2 (3), i²c (3), history (3), tools (3), subsection (3), languages (2), contact (2), about (2), privacy (2), policy (2), terms (2), using (2), non (2), wikimedia (2), commons (2), september (2), categories (2), needing (2), cs1 (2), maint (2), bot (2), status (2), unknown (2), statements (2), 2023 (2), short (2), description (2), wikidata (2), usb (2), thunderbolt (2), list (2), rca (2), terminal (2), xlr (2), related (2), projects (2), wiring (2), link (2), web (2), 2018 (2), 2022 (2), july (2), what (2), march (2), 2004 (2), standards (2), enhanced (2), personal (2), interface (2), plugging (2), provided (2), 2020 (2), computers (2), here (2), rather (2), various (2), types (2), referred (2), svga (2), more (2), 1999 (2), windows (2), nec (2), notes (2), commonly (2), pcs (2), connection (2), much (2), carried (2), cause (2), ohm (2), should (2), ghosting (2), than (2), less (2), wire (2), required (2), resolution (2), higher (2), variety (2), resolutions (2), 320 (2), section (2), learn (2), help (2), sources (2), any (2), device (2), most (2), far (2), extender (2), false (2), host (2), their (2), refresh (2), polarity (2), lines (2), separate (2), active (2), displays (2), made (2), full (2), evolved (2), over (2), time (2), makers (2), controller (2), cga (2), ega (2), back (2), era (2), two (2), left (2), within (2), turn (2), disconnect (2), allow (2), instead (2), implementation (2), specification (2), per (2), frequencies (2), swapping (2), attached (2), both (2), its (2), based (2), current (2), three (2), specifications (2), ubiquitous (2), numbering (2), vsync (2), hsync (2), reserved (2), res (2), gnd (2), superseded (2), appearance (2), upload (2), file (2), changes (2), read (2), english (2), log (2), create (2), account (2), donate (2), menu (2), add, topic, mobile, cookie, statement, statistics, developers, code, conduct, legal, safety, contacts, disclaimers, text, available, apply, site, you, agree, registered, trademark, profit, organization, foundation, inc, creative, attribution, sharealike, license, rendered, parsoid, last, edited, utc, hidden, dmy, dates, january, compatibles, https, index, php, title, vga_connector, oldid, 1377547956, purpose, visual, charts, pdmi, minijack, supermhl, mhl, mdp, hdbaset, gpmi, evc, ccj, eiaj, belling, lee, adc, udi, micro, lfh, dms, openldi, dfp, db13w3, ypbpr, toslink, pdif, speakon, speaker, spring, jack, euroblock, binding, post, banana, www, nullmodem, really, resources, analysis, cadence, reflection, mismatch, intradefairs, 2024, ramsdensquare, epanorama, net, june, 2016, nexusuk, nexus, december, 2010, old, pinouts, archive, vga_cable_split, shielding_image, tyfon, tech, electronics, association, extron, understanding, ardent, tool, capitalism, japanese, subsystem, first, 1988, 100, technical, reference, hinner, martin, timings, supports, detect, disconnection, 2000, rev, shah, agam, computerworld, bowing, out, home, lingering, workplace, terminology, interchangeably, comes, labelling, little, vague, basic, following, hd15, generic, components, complete, buyers, guide, 978, 4919, 1679, isbn, reilly, media, crossing, platforms, macintosh, phrasebook, dictionary, strangers, strange, land, pogue, david, engst, adam, super, acquired, confusion, traditionally, larger, occurs, mismatches, reflected, correctly, matched, prevent, caused, equipment, incorrect, termination, passive, splitters, themselves, while, shorter, likely, introduce, significant, degradation, good, suffer, whereby, induce, unwanted, currents, adjacent, wires, even, greater, lengths, defining, contain, insulation, make, thicker, ranging, 400px, 480px, 1280, 1024px, 160, 2048, 1536px, 388, qxga, sxga, bandwidth, remove, message, please, material, challenged, removed, adding, citations, reliable, improve, electronic, increases, strength, they, schools, businesses, homes, run, off, excessively, pictures, appear, blurry, minor, runs, too, boosters, artifacts, plugs, another, specifically, getting, generate, exist, useful, remote, accessing, headless, server, desktop, environment, resistor, resistance, ohms, adapted, cases, electrically, correct, set, modify, software, rate, length, number, blank, particular, issues, interlace, support, 720, 576, restrictive, conditions, circuit, combine, synchronization, into, suffice, pal, countries, conversions, formats, outputs, complex, need, power, source, operate, inherently, still, inputs, case, necessary, lossy, converters, purchased, convert, common, adapting, don, mode, select, facto, latter, high, density, configuration, lacks, compared, problematic, autodetection, features, only, prior, user, expectation, fully, generally, ultimately, switched, relegating, relative, obscurity, play, predating, color, otherwise, significantly, pre, existed, found, industrial, right, shown, parallel, below, keyboard, mouse, shielded, interconnect, prevents, maintaining, shielding, through, circular, very, large, bulky, requirement, press, requires, access, space, around, grasping, supplementary, predates, seen, market, segments, industries, psi, l240sdi, sony, pvm, 20m4e, aja, corvid, bluefish444, epoch, supernova, single, providing, utilising, five, laptops, portable, mid, 2000s, contained, smaller, incompatible, name, apple, ibook, reassigned, replaced, spec, comply, provide, order, advertise, capabilities, introduced, scheme, redefining, bus, redefined, 12v, unit, powered, keyed, hole, four, limited, frame, 086, line, frequency, communicated, combinations, blanking, intervals, includes, affordances, ability, connect, during, operation, although, practice, done, damage, problems, citation, needed, meanings, defined, identifying, variants, utilizes, necessity, scan, logic, levels, rgsb, rgbs, ttl, rgbhv, derived, earlier, 1985, previously, completely, though, always, clone, initially, did, hercules, mda, blocked, exists, means, probably, fit, modified, row, variously, accurate, nomenclature, proprietary, rows, once, presence, continue, manufactured, newer, via, largely, displaced, longer, predate, refers, originating, went, become, projectors, sets, television, image, detail, diagram, functioning, corresponds, solder, side, clock, id3, scl, id1, sda, id0, powers, eeprom, chip, pwr, blue_rtn, green_rtn, red_rtn, id2, socket, plus, option, depends, pluggable, present, produced, designed, designer, production, free, encyclopedia, item, printable, download, print, export, switch, legacy, parser, get, shortened, permanent, actions, talk, اردو, українська, türkçe, српски, srpski, русский, português, lietuvių, 한국어, қазақша, 日本語, bahasa, indonesia, עברית, français, فارسی, eesti, español, deutsch, dansk, کوردی, català, български, беларуская, العربية, top, special, pages, recent, community, portal, contribute, random, events, navigation, jump, content,

Text of the page (random words):
connector wikipedia jump to content main menu main menu move to sidebar hide navigation main page contents current events random article about wikipedia contact us contribute help learn to edit community portal recent changes upload file special pages search search appearance donate create account log in personal tools donate create account log in contents move to sidebar hide top 1 physical design toggle physical design subsection 1 1 de 9 variant 2 electrical design toggle electrical design subsection 2 1 ps 2 signaling 2 2 ps 55 signaling 2 3 ddc 3 alternative connectors toggle alternative connectors subsection 3 1 mini vga 3 2 bnc 3 3 de 9 4 adapters 5 extenders 6 cable quality 7 db 15 misnomer 8 see also 9 notes 10 references 11 external links toggle the table of contents vga connector 25 languages العربية беларуская български català کوردی dansk deutsch español eesti فارسی français עברית bahasa indonesia 日本語 қазақша 한국어 lietuvių português русский simple english српски srpski türkçe українська اردو 中文 edit links article talk english read edit view history tools tools move to sidebar hide actions read edit view history general what links here related changes upload file permanent link page information cite this page get shortened url switch to legacy parser print export download as pdf printable version in other projects wikimedia commons wikidata item appearance move to sidebar hide from wikipedia the free encyclopedia 15 pin video connector for the graphics standard see video graphics array vga connector de 15 hd 15 a male de 15 connector type analog video connector production history designer ibm based on d subminiature designed 1987 produced 1987 present superseded de 9 ibm pgc superseded by dvi 1999 general specifications hot pluggable depends video signal rgb video signal plus option h and v sync pins 15 connector de 15 data data signal i²c data channel for ddc information pinout a female de 15 socket pin 1 red red video pin 2 green green video pin 3 blue blue video pin 4 id2 res reserved since e ddc formerly monitor id bit 2 pin 5 gnd ground hsync pin 6 red_rtn red return pin 7 green_rtn green return pin 8 blue_rtn blue return pin 9 key pwr 5 v dc powers edid eeprom chip on some monitors formerly key pin 10 gnd ground vsync ddc pin 11 id0 res reserved since e ddc formerly monitor id bit 0 pin 12 id1 sda i²c data since ddc2 formerly monitor id bit 1 pin 13 hsync horizontal sync or composite sync pin 14 vsync vertical sync pin 15 id3 scl i²c clock since ddc2 formerly monitor id bit 3 the image and table detail the 15 pin vesa ddc2 e ddc connector the diagram s pin numbering is that of a female connector functioning as the graphics adapter output in the male connector this pin numbering corresponds with the cable s wire and solder side the video graphics array vga connector is a standard connector used for computer video output originating with the 1987 ibm ps 2 and its vga graphics system the 15 pin connector went on to become ubiquitous on pcs 1 as well as many monitors projectors and hd television sets other connectors have been used to carry vga compatible analog rgb signals such as mini vga including those which predate vga such as bnc and de 9 but vga connector typically refers to this 15 pin design 2 once a ubiquitous presence some devices do continue to be manufactured with vga connectors but newer digital interfaces such as dvi hdmi and displayport sometimes via usb or thunderbolt have largely displaced vga and modern computers and other devices do not typically include it any longer 3 physical design edit further information db 15 misnomer the vga connector is a three row 15 pin d subminiature connector referred to variously as de 15 2 hd 15 or commonly db 15 hd de 15 is the accurate nomenclature under the proprietary d sub specifications an e size d sub connector with 15 pins in three rows on ibm s original vga connectors on the ps 2 pin 9 is a key and is blocked on the female connector and no pin exists on the male connector this means that a current vga cable will probably not fit on an ibm ps 2 without one or the other being modified de 9 variant edit further information de 9 the standard 15 pin vga connector was derived from the earlier de 9 connector used in the 1985 ibm professional graphics controller pgc the de 9 had previously been in use with a completely different pinout on the mda cga hercules and ega as well though ibm always used de 15 connectors for their video graphics array hardware several vga clone hardware makers initially did not instead some early vga hardware both monitors and graphics cards used the pgc standard of a de 9 connector for analog rgb vga electrical design edit all vga connectors carry analog rgbhv red green blue horizontal sync vertical sync video signals the sync signals are based on ttl logic levels 4 in non standard use these lines also allow for rgsb sync on green and rgbs composite sync in both its modern and original variants vga utilizes multiple scan rates so attached devices such as monitors are multisync by necessity the meanings of additional pins has evolved over time signaling for modern devices are defined per vesa ddc for identifying attached display devices the original vga interface includes no affordances for hot swapping citation needed the ability to connect or disconnect the output device during operation although in practice this can be done and usually does not cause damage to the hardware or other problems the vesa ddc specification does however include a standard for hot swapping 5 ps 2 signaling edit in the original ibm vga implementation refresh rates were limited to two vertical between frame 59 94 and 70 086 hz frequencies with one horizontal between line frequency different resolutions of the same frequencies used different blanking intervals which were communicated to the monitor using combinations of different polarity h and v sync signals 6 7 some pins on the connector were also different pin 9 was keyed by plugging the female connector hole and four pins carried the monitor id 7 ps 55 signaling edit the ibm ps 55 display adapter redefined pin 9 as 12v which signals the monitor to turn on when the system unit is powered on 8 ddc edit further information display data channel and edid in order to advertise display capabilities vesa has introduced a scheme to redefining vga connector pins 9 12 and 15 as a serial bus for a display data channel ddc the data provided by ddc is called extended display identification data edid 9 with the implementation of the vesa ddc specification several of the monitor id pins were reassigned for use by ddc signaling and the key pin was replaced with a 5 v dc output per the ddc spec devices that comply with the ddc host system standard provide 5 v 5 from 50 ma to 1 a 10 alternative connectors edit mini vga edit main article mini vga mini vga port on an apple ibook some laptops and other portable devices in the early to mid 2000s contained a mini vga connector that is much smaller than the de 15 there are several incompatible connectors under the name of mini vga bnc edit vga bnc connectors the use of bnc rgb video cables long predates vga and was often seen in other market segments and industries in the vga era some professional monitors such as the psi l240sdi and sony pvm 20m4e and video cards like the aja corvid 44 bnc and bluefish444 epoch supernova cg used multiple bnc connectors instead of a single standard vga connector providing a higher quality connection with less crosstalk 11 by utilising five separate 75 ohm coaxial cables within a 15 pin connector the red green and blue signals pins 1 2 3 are not shielded from each other 12 so crosstalk is possible within the 15 pin interconnect bnc prevents crosstalk by maintaining full coaxial shielding through the circular connectors but the connectors are very large and bulky the requirement to press and turn the plug shell to disconnect requires access space around each connector to allow grasping of each bnc plug shell supplementary signals such as ddc are typically not supported with bnc de 9 edit back of a pc with two video cards that output analog rgb vga signals one with a 9 pin connector on the right and the other with a 15 pin connector left of it also shown are 9 pin and 25 pin serial ports on the far left a 25 pin parallel port below them and ps 2 keyboard and mouse ports also predating vga was the de 9 connector used on the ibm professional graphics controller pgc it used 9 pin connector like the color graphics adapter cga and enhanced graphics adapter ega but was otherwise a vga compatible rgb signal significantly early nec multisync monitors had a 9 pin male port on the back with this pinout this was used in some early vga and vga compatible hardware because the standard pre existed vga it is also found in some industrial hardware from the era this 9 pin vga lacks several pins compared to full vga which was usually not problematic because the autodetection features supported by those pins only evolved over time and prior to windows 95 there was no user expectation of graphics cards and displays being fully plug and play de 9 vga connectors generally all used the same pinout and adapters to the de 15 standard have been made 13 ultimately all vga hardware makers switched to standard de 15 connectors relegating the early variant to relative obscurity de 9 is the same physical size as de 15 the latter being a high density configuration in the same e shell pgc vga de 9 connector pin signals pin pgc vga de facto 1 red r red r 2 green g green g or sync on green gs a 3 blue b blue b 4 composite sync s horizontal h or composite sync s 5 mode select vertical sync v 6 red return red return 7 green return green return 8 blue return blue return 9 sync ground sync ground adapters edit vga mini vga adapter various adapters can be purchased to convert vga to other connector types one common variety is a dvi to vga adapter which is possible because many dvi interfaces also carry vga compatible analog signals adapting from hdmi or displayport to vga without an active converter is not possible because those connectors don t output analog signals for conversions to and from digital formats like hdmi or displayport an active converter is required vga outputs to interfaces with different signaling more complex converters may be used most of them need an external power source to operate and are inherently lossy however many modern displays are still made with multiple inputs including vga in which case adapters are not necessary vga can also be adapted to scart in some cases because the signals are electrically compatible if the correct sync rates are set by the host pc many modern graphics adapters can modify their signal in software including refresh rate sync length polarity and number of blank lines particular issues include interlace support and the use of the resolution 720 576 in pal countries under these restrictive conditions a simple circuit to combine the vga separate synchronization signals into scart composite sync may suffice 14 15 vga false plugs are another type of adapter used specifically for getting a computer to generate a display that does not exist useful when remote accessing a headless server with a desktop environment these false cables are a simple resistor array with a resistance of 75 ohms between each rgb signal pin and ground extenders edit a vga extender is an electronic device that increases the signal strength from a vga port most often from a computer they are often used in schools businesses and homes when multiple monitors are being run off one vga port or if the cable between the monitor and the computer will be excessively long often pictures appear blurry or have minor artifacts if the cable runs too far without an extender vga extenders are sometimes called vga boosters 16 cable quality edit this section does not cite any sources please help improve this section by adding citations to reliable sources unsourced material may be challenged and removed april 2021 learn how and when to remove this message the same vga cable can be used with a variety of supported vga resolutions ranging from 320 400px 70 hz or 320 480px 60 hz 12 6 mhz of signal bandwidth to 1280 1024px sxga 85 hz 160 mhz and up to 2048 1536px qxga 85 hz 388 mhz there are no standards defining the quality required for each resolution but higher quality cables typically contain coaxial wiring and insulation that make them thicker 17 while shorter vga cables are less likely to introduce significant signal degradation good quality cable should not suffer from signal crosstalk whereby signals in one wire induce unwanted currents in adjacent wires even at greater lengths ghosting occurs when impedance mismatches cause signals to be reflected 18 a correctly impedance matched cable 75 ohm should prevent this however ghosting with long cables may be caused by equipment with incorrect signal termination or by passive cable splitters rather than the cables themselves db 15 misnomer edit the de 15 has the same shell size of the de 9 which was commonly used for video and on ibm pcs serial as well the de 9 had acquired the misnomer db 9 because of confusion with the db 25 which was traditionally used for serial connection which used a much larger shell and this carried on to the vga connector often being called db 15 19 see also edit component video extended display identification data edid list of video connectors super video graphics array svga notes edit e g the nec multisync 1 supported sync on green references edit engst adam pogue david 23 november 1999 crossing platforms a macintosh windows phrasebook a dictionary for strangers in a strange land o reilly media isbn 978 1 4919 1679 7 retrieved 16 february 2021 1 2 vga cables a complete buyers guide rs components retrieved 16 august 2020 the terminology here is sometimes used rather interchangeably when it comes to labelling various types of vga cable and can be a little vague however the basic or standard vga connector type will usually be referred to as some variant of the following de 15 hd15 vga plug svga plug d sub 15 or d subminiature or the more generic rgb connector shah agam 31 july 2012 vga ports bowing out of home computers lingering in the workplace computerworld retrieved 16 august 2020 vesa video signal standard version 1 rev 1 pdf 29 march 2000 vesa ddc ci standard version 1 1 2004 p 31 ddc ci supports hot plugging provided the display can detect a disconnection of the video cable hinner martin vga timings archived from the original on 27 october 2012 retrieved 7 november 2012 1 2 video subsystem type 1 ibm personal system 2 hardware interface technical reference pdf first ed ibm may 1988 pp 13 99 13 100 archived from the original pdf on 14 may 2018 retrieved 16 february 2021 japanese display adapters ardent tool of capitalism retrieved 5 february 2023 understanding edid extended display identifica...