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Eurocard is a European standard format for PCB cards, which can be plugged together into a standardized subrack. The subrack consists of a series of slotted card guides on the top and bottom, into which the cards are slid so they stand on end, like books on a shelf. At the "back" of each card is one or more connectors, which plug into mating connectors on a backplane which closes the rear of the subrack.
Sizing and dimensions [link]
Vertical and horizontal directions. Height is specified by the rack unit 'U', with 1 U being 1.75 inches (44.45 mm), the same unit used with 19-inch racks. Width is specified by the horizontal pitch unit 'HP', with 1 HP being 0.20 inches (5.08 mm). A 3U subrack is 5.25 inches (133.35 mm) high and accepts a 3U Eurocard which is 100 millimetres (3.937 in) high. Another popular size is the 6U high subrack which is 10.5 inches (266.70 mm) high and accepts 6U (Double) Eurocards which are 233.35 millimetres (9.187 in) high. Note that front panel sizes are slightly less than the subrack sizes: for example a 3U front panel may only be 130 millimetres (5.118 in) high whereas the 3U subrack itself is 133.35 millimetres (5.250 in) high.
The Eurocard height starts at 100 millimetres (3.937 in) and increments by 5.25 inches (133.350 mm) increments. This arrangement allows two 3U high (100 millimetres (3.937 in)) Eurocards to be supported properly next to a 6U high (233.35 millimetres (9.187 in)) Eurocard. The 33.35 millimetres (1.313 in) space is required for the card guide structure that would be between the two 3U high cards.
Eurocards come in modular depths that start at 100 millimetres (3.937 in) and then increase in 60 millimetres (2.362 in) increments. The 160 millimetres (6.299 in) depth is the most common today, however standard hardware is available to accommodate depths of 100 millimetres (3.937 in), 160 millimetres (6.299 in), 220 millimetres (8.661 in), 280 millimetres (11.024 in), 340 millimetres (13.386 in), and 400 millimetres (15.748 in).
Standards & architecture [link]
The Eurocard mechanical architecture was defined originally under IEC-60297-3. Today, the most widely recognized standards for this mechanical structure are IEEE 1101.1, IEEE 1101.10 (also known commonly as "dot ten") and IEEE 1101.11. IEEE 1101.10 covers the additional mechanical and EMI features required for VITA 1.1-1997(R2002) which is the VME64 Extensions standard as well as PICMG 2.0 (R3.0) which is the CompactPCI specification.
The IEEE 1101.11 standard covers rear plug-in units that are also called rear transition modules or RTMs.
The Eurocard is a mechanical system and does not define the specific connector to be used or the signals that are assigned to connector contacts.
The connector systems that are commonly used with Eurocard architectures include the original DIN 41612 connector that is also standardized as IEC 60603.2. This is the connector that is used for the VMEbus standard which was IEEE 1014. The connector known as the 5-row DIN which is used for the VME64 Extensions standard is IEC 61076-4-113. The VME64 Extension architecture defined by VITA 1.1-1997 (R2002).
Another popular computer architecture that utilizes the 6U-160 Eurocard is CompactPCI and CompactPCI Express. These are defined by PICMG 2.0R3 and PICMG Exp0 R1 respectively. Other computer architectures that utilize the Eurocard system are VXI, PXI, and PXI Express.
A computer architecture that used the 6U-220 Eurocard format was Multibus-II which was IEEE 1296.
Because the Eurocard system provided for so many modular card sizes and because connector manufacturers have continued to create new connectors which are compatible with this system, it is a popular mechanical standard which is also used for innumerable "one-off" applications.
Conduction-cooled Eurocards are used in military and aerospace applications. They are defined by the IEEE 1101.2-1992(2001) standard.
The Eurocard standard is also the basis of the "Eurorack" format for modular electronic music synthesizers, popularized by Doepfer and other manufacturers.
https://wn.com/Eurocard_(printed_circuit_board)
PCB
PCB may refer to:
Science and technology
Computing
Organisations
Places
Other uses
PCB (software)
PCB is a free and open-source software suite for electronic design automation (EDA) - for printed circuit boards (PCB) layout. It uses GTK+ for its GUI widgets.
History
PCB was first written by Thomas Nau for an Atari ST in 1990 and ported to UNIX and X11 in 1994. Initially PCB was not intended to be a professional layout system but as a tool for individuals to do small-scale development of hardware. The second release 1.2 introduced user menus. This made PCB easier to use and increased its popularity. Harry Eaton took over PCB development beginning with Release 1.5, although he contributed some code from Release 1.4.3
Features
MACS1149-JD
MACS1149-JD (also known as PCB2012 3020) is a one the farthest known galaxies from Earth and is at redshift of about z=9.6 or 13.2 billion light-years away. It is 1 percent of the Milky Way's mass.
See also
References
Links
Eurocard
Eurocard may be:
Eurocard (payment card)
Eurocard was a credit card, introduced in 1964 by a Swedish banker in the Wallenberg family as an alternative to American Express. In 1968 it signed a deal with Mastercard so that their cards were accepted by each others networks and this eventually led to a joint venture known as Maestro International in 1992 and merger in 2002. Its operations were relocated to Belgium in the late 1960s and the card became the dominant brand in North and Central Europe between 1970 and 2002. It was eventually replaced by the Mastercard brand in most locations, but its logo is still used in some countries.
History
In 1965, Eurocard International N.V. was established, based in Brussels, as a not-for-profit membership association of European banks. Its operational entity was established as European Payment System Services (EPSS). In 1968, Eurocard International and MasterCard International entered into a strategic alliance, in which both issuer's cards would be accepted on either network. This allowed MasterCard to get an instant European acceptance network, and Eurocard to get accepted worldwide. Eurocard International got the sole license to issue MasterCard cards in Europe.
