BCT-ETX-C3-XXX
S
INGLE
B
OARD
C
OMPUTER
I
NSTALLATION
INSTALLATION
M
OUNTING
The BCT-ETX-C3-XXX board has 4 mounting holes of 2.5mm diameter. Care should be taken on the
underside of the board to not cause any mechanical damage to the components adjacent to the mounting holes.
All connections to the BCT-ETX-C3-XXX CPU are made through connectors X1-X4 inclusive. These Hirose
plug connectors (Part Number
FX8-100P-SV
) mate with corresponding Hirose socket connectors (Part
Number
FX8-100S-SV
). When installing or removing the BCT-ETX-C3-XXX module into the target base
board, ensure all power has been removed. This includes the 5volt supply, the 5V stand-by supply and the
external Lithium cell or RTC back-up battery.
Figure 2. BCT-ETX-C3-XXX PCB - Top View Showing Mounting Hole Positions.
All Dimensions in millimetres
Please note that the spacing/alignment for the ETX module connectors and the baseboard connectors differs by
0.6mm.
Where the spacing of X1 and X2 from X3 and X4 is 109.2mm on the module (111.6-2.4), it is 109.8mm (111.9-
2.1) on the baseboard. This is due to a different offset between pegs and connector aperture in the two mating
connectors.
Included in our reference design pack is a DXF file of our Evaluation Backplane for this reason.
Also note that bookmarks 1 and 2 in our diagram indicate 1.1 and 0.7 mm holes for the pegs – adjacent to pins 1
and 99 on the connectors.