User Guide • PC3-ALLEGRO • CompactPCI
®
PlusIO CPU Board • Intel® i7-3xxx Processor
Pin Headers & Debug
Front Panel Handle Microswitch Header P-FPH
The jumper P-FPH is used for attachment of an external SPDT switch. By default, P-FPH is connected
across a short cable harness to a microswitch, which is integrated into the PC3-ALLEGRO front panel
handle (ejector lever). The switch performs a power button event (e.g. system shutdown) by short-
circuiting the pins 1 and 3 of P-FPH when activated (hold unlock button of front panel handle
depressed momentarily).
P-FPH
1
black
Microswitch Pole (Common), Wired to PLD
2
red
Microswitch Throw - F/P Handle Locked Position, NC
3
yellow
Microswitch Throw - F/P Handle Unlocked Position, Wired to GND
# 276.02.003.11
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