VME Board Sizes; Mechanical Dimension for VME cards
Three basic VMEbus card [Dimensions] sizes are shown above, which include
9U, 6U, and 3U. Two 6U card sizes are depicted.
The VME64 spec added the P0 connector between P1 and P2 on the 6U size
card (not shown).
IEEE 1101.1 Base Document for Mechanics ~ Defines 3U/6U/9U (high) x
100/160/220/280/340/400mm (Long) cards
IEEE 1101.10 Mechanics for VME Boards and Subracks
IEEE 1101.11 Mechanics for Rear Transition Modules
Three card heights are allowed with VME; 3U, 6U, or 9U; a single slot
card is 6T wide. Length is either 160mm or 340mm (Norm)
Height is given in 'U' [1U = 43.60mm], Length is given in 'mm', Width is
given in 'T' or HP [1HP = 5.08mm [HP: Horizontal Pitch];
Card sizes listed below are one slot or 6T wide
A size CCA dimensions = 3U x 160mm. A 3U Printed Wiring Board
[PWB] is 100mm high.
B size CCA dimensions = 6U x 160mm. A 6U Printed Wiring Board
[PWB] is 233mm high.
C size CCA dimensions = 6U x 340mm, ...
{H x L x W {@ width=6T}
D size CCA dimensions = 9U x 340mm. A 9U
Printed Wiring Board [PWB] is 360mm high.
A, B, C, and D are VXI terms. VME normally only references 3U or 6U
[dimensions] by a length.
The board thickness for VME cards is 0.063 +/- 0.008 inchs [1.6mm +/-
0.2mm] Thicker or thinner CCAs may not fit in the card guides
correctly.
How ever an 0.90 board may work if you mill down the top and bottom
[2.5mm] of the card to 0.63 so it fits in the card guides.
A, B, C, and D are VXI terms. VME normally only references 3U or 6U by a
length, but the 9U was added a few years ago.
The VMEbus PWB Dimensions [size] or form factor is also called the
Euro-card form factor.
Back to the main VMEbus page for additional details including connector types, bus pin outs, and electronic equipment manufacturers and component manufacturers. OEM VME Card Vendors, and products listing is found on the VME Board manufacturers page. {This Web Site}
Abstract: Available VME board sizes. What are the VMEbus board formats. Show the different VME Card form factors
Compare the different VMEbus board dimensions. Comparison of VME card lengths and card heights. What is the depth of a VME board.
Engineering Key Words: PWB,CCA, Circuit Card, Printed Wiring Board, Form Factor, Dimensions, Mechanical, Mechanics, Height, High, Long, VXI, VXI-Bus, VME {Versa Module Europa} Extension for Instrumentation, VME, VMEbus, VME64, Versa Module Europa, IEEE 1014-1987, Euro-Card size, Embedded Computer bus, Usable Component Space, Front panel hole locations, How tall is a VME card, How long is a VME card.
|
|||||||
| Home | |||||||
|
|
|||||||
|
|
|
|
|
|
|
|
| Distributors | Components | Equipment | Software | Standards | Buses | Design | Reference |