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From August 2016 until July 2019, the latest iteration of the widescreen testcard could be seen briefly each morning at 7:00 am on BBC Two and BBC Two HD. At the centre bottom of the test card is an animated grey bar with graduations corresponding to 1/12 of a second. The animation is accompanied by
731:
tone is played alongside, which plays test tones at different frequencies from each of the different surround sound speakers, with markers (such as L, R, C, LFE, Ls, Rs) appearing inside some of the grey boxes of the testcard. BBC HD closed in March 2013; therefore Test Card X is no longer regularly
899:
1992 was the last year that Test Card F was seen daily with music; 1995 was the last year it was seen with music, although it was seen until 1999 with just tone output, and Ceefax was broadcast either with tone or music. However, since the closure of Ceefax, the shutdown of analogue television
900:
transmissions, and the imposition of budgetary constraints, a new revision of the testcard can be seen daily on BBC Two and BBC Two HD at the end of the "This is BBC Two" transmission. Each morning, as the segment concludes, the testcard is broadcast for approximately one minute.
699:
on the top and right of the image are the full 100 per cent saturation version, unlike Test Cards F and J which use the 95 per cent type. Extra mirrored arrow-heads on the central axis at the sides mark the positions of the middle 4:3 and 14:9 sections of the image.
478:, were already shown. A green wrap was made to cover his body and this can be seen in Test Card J and Test Card W, along with more of his body shown in the photograph â revealing the fact that he is actually holding a piece of
921:" inscribed on it when a user visited a page that did not exist; however, some time between July 2017 and May 2020, this was replaced with an image of two "clangers" (animated puppets) from the BBC television show
895:
In May 1983, trade test transmissions of the test card ended when Ceefax pages began to be shown during all daytime intervals. This meant that Test Card F was only seen for a few minutes early in the morning.
1096:
parodies the Test Card F where Carole and
Bubbles are replaced by worms looking like them. Also, the grid on the blackboard is replaced by a drawing of a grenade, an emblematic weapon of the game franchise.
931:" Internal Error page featured a cross-eyed Bubbles appearing in front of a blackboard with a background of fire; however, this has since been replaced with the same error message seen on the 404 page.
114:
In the digital age, Test Card F and its variants are very infrequently broadcast, as downtime hours in schedules have largely been discontinued. Several variations of TCF have been screened, among them
910:
For the fortieth anniversary of Test Card F, there was some renewed interest in
Bubbles in the media; in a 2007 interview, Hersee mentioned that she took Bubbles into school with her to prove to her
71:
and colour test signals used to assess the quality of the transmitted picture. It was first broadcast on 2 July 1967 (the day after the first colour pictures appeared to the public on television) on
270:
circuits were not adjusted properly. The closely spaced lines in various parts of the screen allowed focus to be checked from centre to edge; mistuning would also blur the lines. All parts of the
446:
Along with his Test Card F co-star Carole Hersee, Bubbles has appeared for an estimated total of 70,000 hours on television, equivalent to nearly eight whole years. Carole still owns
Bubbles.
2745:
829:
a 'pip' that occurs when the animated bar reaches the centre mark (indicated by a 0), which together can be used to determine whether the digital audio and video signals are synchronised.
903:
Since the late 1990s, Bubbles has only very rarely appeared on television, as Test Card F has been discontinued, and Test Cards J and W are very seldom shown, due to the advent of
298:
584:(NZBC) briefly used a modified version of TCF until its dissolution in 1975, replacing its common monochrome test card design dating back to the non-networked-AKTV2/CHTV3/WNTV1/
1803:
259:
tests are found on the left and right respectively of the central picture. On the updated version known as Test Card J (including widescreen and HD versions), the X on the
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would not be distinct if contrast and brightness (both internal preset settings and user adjustments) were not set correctly. The black bar on a white background revealed
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pages. It continued to be used for a few minutes each day before the start of programmes, or when the Ceefax generator was not working. It was further phased out from
1498:
1112:. Carole and Bubbles are replaced by Elizabeth and a toy lion with red fur, a blue ribbon and a moustache, with "BRB" written on the blackboard in place of the grid.
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1979:
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is an updated 16:9 (1.78:1) widescreen version of Test Card F. It first appeared in
November 1999 alongside Test Card J, with which it bears some similarities.
728:
379:
A sound of some kind is usually transmitted in the background. It is either music, usually a composition commissioned by the station itself or "royalty-free"
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2212:
Fan group site includes history of the BBC and ITA Test Cards, the music, and details about the Trade Test Colour Films shown from the late fifties to 1973.
294:
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segment "The Flawed Couple" featured a parody of Test Card F with Pinky in place of Carole Hersee and the Brain wearing clown makeup in place of
Bubbles.
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In recent years, the Test Card is only shown during engineering tests on the BBC and is accompanied by a steady tone of various pitches accompanied by a
52:. It was the first to be transmitted in colour in the UK and the first to feature a person, and has become an iconic British image regularly subject to
566:, albeit with the original centre image replaced with another slide featuring a puppet resembling Bubbles the Clown and four girls, one of each of the
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570:. This particular test card was introduced in 1974 upon the introduction of colour television in Singapore, replacing a modified 625-line version of
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in
November 1997 when the station began to air 24 hours a day, followed by BBC2 in January 1999 when its overnight downtime was replaced entirely by
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in the United
Kingdom and in countries elsewhere in the world for more than four decades. Like other test cards, it was usually shown while no
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The test card seems to have been given the name "Test Card X" but not by us, it is in fact a modified high definition version of test card W
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1455:
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is an updated version of Test Card F, and first appeared in
November 1999. It includes the following changes relative to its predecessor:
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in 2010â2012, the test card made an appearance during the annual RBS (rebroadcast standby) Test
Transmissions and, until 2013, during the
1078:
426:. Test Card music had ceased to be frequently heard with the test card by the end of the 1980s, although it continued to be played over
1005:
Variations and parodies of Test Card F are common in
British broadcasting, Internet sites, and games. Some prominent examples include:
727:. It could be viewed every two hours as part of the BBC HD preview slot. When viewed, it was enhanced with 5.1 surround sound tests. A
1902:
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However, the shade of green material chosen was too subtle for the engineers' liking and so Bubbles' body colour in Test Card F was
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195:
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in Sweden was also later inspired by Test Card F to develop its own colour test card, based on its earlier monochrome test cards,
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A newly added green square at the top of the screen is used to facilitate easier observation of chrominance to luminance delay.
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era. It was first introduced at the beginning of colour television broadcasts in 1973. One of the two successors of NZBC (
343:(LCDs) that are not scanned at high speed. The test card was a vital tool in its day, but has become far less important.
103:. After then it was only seen during engineering work, and was last seen in this role in 2011. The card was also seen on
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wore a runway look inspired by Test Card F for the season four runway "Keeping it 100!", which was held in honor of the
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596:) also occasionally used TCF and another TCF-inspired test card called T1 up until approximately 1980. Upon renaming to
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1987:
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predecessor to Test Card W without an identifying letter first appeared in March 1998 as part of digital tests on the
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Parodies have been used in promotional material or videos for many songs (often with band members' faces), including
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between 1953 and 1983, and the first French colour test card featuring a centre image of colourful roses was used on
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124:
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In the centre image, a child was depicted so that wrong skin colour would be obvious and not subject to changing
85:(1924â2001), the father of the girl in the central image. It was frequently broadcast during daytime downtime on
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Virtually all the designs and patterns on the card have some significance. Along the top (see above) are 95%
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The Girl, The Doll, The Music - essay included as the notes for "Test Card Classics, Chandos CD FBCD 2000"
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and signal reflections. The castellations along the top and bottom also revealed possible setup problems.
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Test Card F was also used in approximately 30 countries outside the UK. Notable overseas users included:
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Off-air screen capture of BBC Test Card F, as seen on BBC1 between 17 February 1991 and 4 October 1997.
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Elizabeth Rose Bloodflame uses a parody of Test Card F as her "BRB" (be right back) slide during her
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included a parody of Test Card F where a hand came out and completed the game of noughts and crosses.
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It is less tightly cropped, resulting in more edge detail from the original photograph being visible.
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2102:"RuPaul's Drag Race UK series 4 episode 1 runway recap: All the BBC icons and 'Ru Are You?' looks"
1953:
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episode "Tween Scenes," with Ten replacing Carole Hersee and Three replacing Bubbles the Clown.
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2494:
2456:
2443:
1855:
1808:
427:
396:
365:). The card was converted to electronic form in 1984 when electronic storage became possible.
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made up of two transparencies in perfect registrationâone containing the colour information (
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The name of the broadcasting channel usually appeared in the space underneath the letter Fâa
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The central image is based on the same source photograph, but with some minor adjustments:
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satellite, and was notably broadcast to the public on 6 November 1998 as part of a joke on
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1983:
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is much less susceptible to most of these problems. Some of them are also associated with
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The negative black squares in the left hand step pattern should flash on and off at 1
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The blocks of colour on the sides would cause the picture to tear horizontally if the
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in the United Kingdom, Test Card W can be viewed at any time on most Freeview boxes.
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board is at the exact centre of the screen, as some believe was originally intended.
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1903:"BBC website down: Incredibly creepy clown in error message is freaking people out"
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broadcast. Test Card X did however make an appearance on the lunchtime edition of
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It has been rescanned from the original transparency for improved colour accuracy.
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error called chrominance/luminance delay inequality would make the clown's yellow
1300:
251:. There are triangles on each of the four sides of the card to check for correct
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fashions. The juxtaposed garish colours of the clown were such that a common
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based on Test Card F, who teases and torments the lead character, Sam Tyler.
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The image has been re-aligned within Test Card J such that the cross on the
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turn white. Use of centre images in test cards were however not a new idea;
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33:
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1804:"Personal Column: Test-card special - Profiles, People - The Independent"
1100:
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918:
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Radio Television Singapore (RTS)/Singapore Broadcasting Corporation (SBC)
400:
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The BBC website previously featured Bubbles next to a blackboard with "
867: in this section. Unsourced material may be challenged and removed.
438:
282:
236:
180: in this section. Unsourced material may be challenged and removed.
94:
72:
21:
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724:
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224:
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Carole Hersee interview marking the 40th anniversary of test card F
442:
Original transparency of the central image created for Test Card F.
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National Film and Sound Archive of Australia (20 February 2015).
1456:"Non-UK Television Test Cards, Tuning Signals, Clocks and Idents"
1415:"Non-UK Television Test Cards, Tuning Signals, Clocks and Idents"
1198:"Non-UK Television Test Cards, Tuning Signals, Clocks and Idents"
1162:"Non-UK Television Test Cards, Tuning Signals, Clocks and Idents"
1432:
597:
475:
455:
383:, or a steady tone. Composers whose music has been used include
244:
228:
2229:
1929:"BBC Three - This is BBC Three, HD Slide / Test Card BBC Three"
1842:. BBC. 18 June 2016. Archived from the original on 3 April 2016
489:(this can be seen from the edges of his image) to make it more
1790:"The test card puts in an unscheduled appearance on Sportsday"
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719:
variant of Test Card W (sometimes referred to unofficially as
547:
541:
529:
471:
313:
240:
149:
37:
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on 18 January 2023, in place of a slide intended to show the
466:
was also needed within the scene as the other two television
263:
board is an indicator for aligning the centre of the screen.
89:
until 29 April 1983, when it was replaced with broadcasts of
1180:"RĂ©trospective : la mire Ă la tĂ©lĂ©vision (1953 â 2002)"
67:
with a clown doll, Bubbles the Clown, surrounded by various
1150:
from the original on 12 December 2021 – via YouTube.
758:
Off-air screen capture of the 2016â2019 BBC Two iteration.
662:. This is to aid in the detection of frozen digital links.
430:
until the termination of that service on 22 October 2012.
2069:"Hallelujah Money (feat. Benjamin Clementine) - Gorillaz"
350:
F denoting an original optical version of the test card.
2144:ăDEBUTăEllo Ello Ello~! đ #hololiveEnglish #holoJustice
1223:. United Kingdom: BBC Research & Development. 1984.
973:
600:
it subsequently replaced TCF and its variants with the
127:
variant, which is sometimes erroneously referred to as
938:
in 2022, Test Card F aired for periods of 20 minutes.
2198:
Interview about the Mighty Boosh's Test Card F parody
107:
in the 1970s, occasionally used in conjunction with
2617:
2579:
2551:
2513:
2480:
2442:
2312:
2289:
1275:"Ceefax service closes down after 38 years on BBC"
1566:"NAS 50 Moments|National Archives Singapore"
578:which had likely previously been used internally.
2746:Telecommunications-related introductions in 1967
320:from 1967 until sometime around the mid-1970s.
2181:Down-loadable test card wallpaper from the BBC
326:with a girl holding a doll in the centre image
2241:
914:that she really was the girl in the picture.
8:
1450:
1448:
1446:
16:Test card used by BBC television for decades
2609:The quick brown fox jumps over the lazy dog
796:. Unsourced material may be challenged and
361:) and the other the monochrome background (
2248:
2234:
2226:
1765:"A Christmas Present from the HD Channel!"
1736:"A Christmas Present from the HD Channel!"
1383:
1381:
1379:
1377:
2736:1967 establishments in the United Kingdom
1350:
1348:
883:Learn how and when to remove this message
816:Learn how and when to remove this message
196:Learn how and when to remove this message
1051:The test card has also been used in the
927:. Similarly, in 2015 the BBC website's "
510:Bahrain Radio and Television Corporation
2037:"Madness - Waiting For The Ghost Train"
1134:
255:of the picture. Standard greyscale and
1853:
1584:"TV-DX SBC 8 Singapore E08 04.10.1991"
1548:"Television Graphics Around the World"
711:BBC HD channel variant ("Test Card X")
142:preview loop, which used Test Card W.
2083:from the original on 12 December 2021
2049:from the original on 12 December 2021
462:, but the BBC engineers decided that
7:
865:adding citations to reliable sources
794:adding citations to reliable sources
582:New Zealand Broadcasting Corporation
482:, which was not previously visible.
178:adding citations to reliable sources
59:The central image on the card shows
2121:Worms W.M.D - Bob's Tank Warehouse!
1501:. hub.tv-ark.org.uk. Archived from
614:Unlettered BBC Widescreen test card
604:which was used well into the 1990s.
454:Bubbles's original body colour was
2221:Carole Hersee Biography on Youtube
976:by removing the content or adding
14:
2216:A history of the BBC's test cards
1142:Mad Radio DXer (9 January 2008).
1978:Griffiths, Nick (1 April 2007).
1526:"Colour TV in Australia, Part 2"
950:
841:
766:
574:, but was later replaced by the
568:four official races of Singapore
518:in Denmark (Replaced along with
154:
2710:1951 USAF resolution test chart
1326:Deacon, Michael (25 May 2007).
1092:The trailers of the video game
852:needs additional citations for
538:in Sweden, briefly in the 1970s
532:in Norway, briefly in the 1970s
165:needs additional citations for
1901:Gadd, Sophie (14 March 2015).
1812:. 27 June 2009. Archived from
1715:. Digital Spy. 13 January 2008
1713:"Hidden testcard on topup box"
1417:. 4 March 2016. Archived from
1200:. 4 March 2016. Archived from
1164:. 4 March 2016. Archived from
723:) was used on the now-defunct
353:Originally, Test Card F was a
78:The card was developed by BBC
1:
2741:Television shows about clowns
1328:"Talking about the Test Card"
1034:(Waiting For) The Ghost Train
609:Variants and updated versions
493:and also to give it a higher
2680:"The North Wind and the Sun"
2155:– via www.youtube.com.
2131:– via www.youtube.com.
1836:"Error 404 : Not Found"
1237:A History of Test Card Music
312:test card which was used on
305:as the central motif of its
2462:Trabb PardoâKnuth algorithm
1433:"Dansk Radio - TV historie"
2772:
2660:functions for optimization
2419:Snell & Wilcox SW2/SW4
372:
2339:EIA 1956 resolution chart
2261:
2177:(BBC News, 19 April 2001)
1980:"Did you spot the clues?"
1860:: CS1 maint: unfit URL (
1394:MHP The Test Card Gallery
1217:BBC Engineering at IBC-84
972:Please help Knowledge to
934:Prior to the relaunch of
907:and 24-hour programming.
2472:Just another Perl hacker
2334:Indian-head test pattern
2271:Reference implementation
2015:Radiohead Public Library
1954:"Life on Mars questions"
590:South Pacific Television
36:that was created by the
2452:"Hello, World!" program
2291:Artificial intelligence
629:Have I Got News For You
560:in Newcastle, Australia
341:liquid crystal displays
333:large-scale integration
331:Modern circuitry using
215:in descending order of
2690:SMPTE universal leader
2397:Philips circle pattern
1876:"Error 404: Not Found"
1144:"BBC 1 RBS Tests 2008"
1123:List of BBC test cards
759:
748:BBC Two variant (2016)
602:Philips circle pattern
576:Philips circle pattern
524:Philips circle pattern
443:
119:(digitally enhanced),
26:
1670:"TVNZ1 Testcard 1992"
1627:"Out and About no 11"
1361:The Test Card Gallery
1254:Tony, Currie (1998).
1079:RuPaul's Drag Race UK
757:
441:
339:; modern screens use
146:Technical information
123:(widescreen) and its
24:
2695:EURion constellation
2515:3D computer graphics
2210:The Test Card Circle
2045:. 24 November 2008.
974:improve this section
861:improve this article
790:improve this section
632:to censor then-host
554:in Sydney, Australia
424:female talking clock
174:improve this article
2281:Standard test image
2256:Standard test items
2079:, 19 January 2017,
1990:on 21 November 2008
1301:"Test card special"
1062:Dave Allen At Large
986:independent sources
673:noughts and crosses
544:in Perth, Australia
369:Audio accompaniment
301:in France used the
261:noughts-and-crosses
65:noughts and crosses
2756:British inventions
2444:Computer languages
2108:. 18 October 2022.
2009:Radiohead (2020).
1882:. BBC. 29 May 2020
1792:. 18 January 2023.
1234:Roberts, Neville.
1089:100th anniversary.
942:In popular culture
905:digital television
760:
444:
355:photographic slide
257:frequency response
136:digital switchover
134:Up until the UK's
27:
2718:
2717:
2670:Harvard sentences
2495:Canterbury corpus
2175:Test card special
1809:Independent.co.uk
1769:BBC Internet blog
1740:BBC Internet blog
1552:www.meldrum.co.uk
1388:Meldrum, Darren.
1281:. 23 October 2012
1186:. 5 January 2012.
1071:Animaniacs reboot
1003:
1002:
893:
892:
885:
826:
825:
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636:about discussing
497:value on screen.
434:Bubbles the Clown
428:Pages from Ceefax
397:Frank Chacksfield
337:cathode ray tubes
206:
205:
198:
100:Pages from Ceefax
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2553:Machine learning
2482:Data compression
2324:SMPTE color bars
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1986:. Archived from
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1631:www.oocities.org
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1458:. Archived from
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1422:
1421:on 4 March 2016.
1411:
1405:
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1402:
1400:
1390:"BBC Test Cards"
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1083:Cheddar Gorgeous
1046:Hallelujah Money
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738:BBC News channel
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2655:EICAR test file
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1357:"Test Card 'F'"
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1307:. 19 April 2001
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2528:Stanford bunny
2525:
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2505:enwik8, enwik9
2502:
2500:Silesia corpus
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2147:. 22 June 2024
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1026:'s 2000 album
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1009:The TV series
1001:
1000:
965:references to
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2650:"Bad Apple!!"
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959:This section
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850:This section
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775:This section
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634:Angus Deayton
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417:Alan Hawkshaw
414:
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409:Brian Bennett
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83:George Hersee
81:
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61:Carole Hersee
57:
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43:
39:
35:
31:
23:
19:
2599:Hamburgevons
2366:
2313:Television (
2299:Chinese room
2276:Sanity check
2149:. Retrieved
2143:
2137:
2125:. Retrieved
2120:
2114:
2105:
2096:
2085:, retrieved
2072:
2063:
2051:. Retrieved
2040:
2031:
2019:. Retrieved
2014:
2004:
1992:. Retrieved
1988:the original
1973:
1961:. Retrieved
1957:
1948:
1936:. Retrieved
1932:
1923:
1911:. Retrieved
1909:. The Mirror
1907:mirror.co.uk
1906:
1896:
1884:. Retrieved
1879:
1870:
1844:. Retrieved
1839:
1830:
1818:. Retrieved
1814:the original
1807:
1798:
1784:
1772:. Retrieved
1768:
1758:
1750:
1743:. Retrieved
1739:
1729:
1717:. Retrieved
1707:
1698:
1689:
1677:. Retrieved
1673:
1664:
1652:. Retrieved
1648:
1639:
1630:
1621:
1609:. Retrieved
1605:
1596:
1587:
1578:
1569:
1560:
1551:
1542:
1530:. Retrieved
1519:
1507:. Retrieved
1503:the original
1499:"TCF Sweden"
1493:
1481:. Retrieved
1477:
1468:
1460:the original
1436:
1427:
1419:the original
1409:
1397:. Retrieved
1393:
1364:. Retrieved
1360:
1335:. Retrieved
1331:
1321:
1309:. Retrieved
1304:
1295:
1283:. Retrieved
1278:
1269:
1256:
1249:
1236:
1229:
1216:
1210:
1202:the original
1192:
1183:
1174:
1166:the original
1156:
1137:
1099:
1069:
1060:
1054:Numberblocks
1052:
1027:
1012:Life on Mars
1010:
1004:
991:
961:may contain
960:
933:
922:
916:
909:
902:
898:
894:
879:
873:October 2020
870:
859:Please help
854:verification
851:
833:Recent years
827:
812:
806:October 2020
803:
788:Please help
776:
751:
733:
720:
714:
702:
694:
689:
688:
648:
647:
627:
617:
504:
484:
453:
445:
421:
405:John Cameron
378:
352:
345:
330:
303:Marly Horses
287:transmission
280:
265:
253:overscanning
207:
192:
186:October 2020
183:
172:Please help
167:verification
164:
133:
128:
120:
116:
113:
98:
77:
58:
40:and used on
29:
28:
18:
2751:Tic-tac-toe
2604:Lorem ipsum
2585:filler text
2538:Utah teapot
2523:Cornell box
2304:Turing test
1774:14 December
1745:21 December
1695:"- YouTube"
1602:"Testcards"
1474:"Testcards"
1110:livestreams
1094:Worms W.M.D
1081:contestant
1015:features a
721:Test Card X
697:colour-bars
690:Test Card W
685:Test Card W
649:Test Card J
644:Test Card J
572:Test Card C
385:Roger Roger
381:stock music
359:chrominance
213:colour-bars
129:Test Card X
121:Test Card W
117:Test Card J
109:Test Card G
48:were being
30:Test Card F
2725:Categories
2581:Typography
2187:Interviews
2087:19 January
1820:13 January
1679:13 January
1654:13 January
1649:ing-sat.hu
1611:13 January
1483:13 January
1285:13 January
1263:. Chandos.
1129:References
1040:, and the
963:irrelevant
912:headmaster
640:'s life.
620:widescreen
512:in Bahrain
373:See also:
348:sans-serif
307:monochrome
210:saturation
69:greyscales
46:programmes
42:television
2700:Shakedown
2315:test card
2169:BBC links
2106:BBC Three
1958:BBC Drama
1880:bbc.co.uk
1840:bbc.co.uk
1184:VivelaPub
1024:Radiohead
994:July 2020
978:citations
936:BBC Three
777:does not
744:website.
742:BBC Sport
734:Sportsday
717:1080 line
495:luminance
491:saturated
487:retouched
363:luminance
272:greyscale
217:luminance
50:broadcast
34:test card
2625:3DBenchy
2561:ImageNet
2081:archived
2047:Archived
1938:29 March
1856:cite web
1532:10 March
1509:10 March
1305:BBC News
1279:BBC News
1148:Archived
1117:See also
1104:English
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