VXI Bus

Versa Module Europa
IEEE 1014-1987

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VXI Bus 'C' Board Size

This is a diagram of a VXI bus 'C' size card. The maximum size of the C board is shown below.
The connector locations and component keep-out areas are indicated, face-plate screw locations are also indicated.
A card has a normal thickness of 90 mil for either VXI or VME boards.
However thicker cards may be used if the card edges are milled down top to continue to use a normal card guide.
Additional data is provided after the graphic, Component height and other detailed data on VXI may be found on the VXI bus or VME bus page.

The 340mm long C-size card would be used in combination with a 340mm long D-size card.
The 6U size, 160mm long cards are not normally found in the same chassis, because they would not reach the front panel.

VXIbus Mechanical Dimensions

VXI Bus C size Card Mechanical Dimensions

Mechanical drawing; VXI C Size Dimensions Printed Wiring Board

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 [6U high, but short]

Three card heights are allowed with VXI; 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 normally one slot wide or 6T wide
A size PWB Dimensions = 3U x 160mm,
B size PWB Dimensions = 6U x 160mm,
C size PWB Dimensions = 6U x 340mm, [this page]
D size PWB Dimensions = 9U x 340mm ... H x L x W {@ width=6T}
A, B, C, and D are VXI terms. VME normally only references 3U or 6U by a length.

The graphic compares the dimensions of both the C-size and D-size board dimensions.

6U Card Dimensions

Refer to the main VXI bus page for a description of the VXIbus and VXI component links.
Refer to the main VME bus page for a description of the VMEbus and VME component links.

VME was the original standard, VXI is a modification to VME.

Site Navigation: Engineering Home > Interface Buses > Backplane Interface Standards > VXI Board Standard > C Size VXI Board Form Factor.


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