User Guide

PAMS
Technical Documentation
UI Module UE4S
Page 4–10
Original 03/98
Keyboard Matrix
ROW/COL 0 1 2 3 4
0 NC NC NC Down NC
1 NC Clear Navikey NC Up
2 NC 1 4 7 *
3 NC 2 5 8 0
4 PWR switch 3 6 9 #
NC = Not Connected
12 3
4
56
7
8
9
#
0
*
Navi
Down
Up
Clear
Power Key
Micro switch is used as a power key on UI module. Circuitry includes mi-
cro switch and two diodes which is needed for MAD interface. Power key
is connected to CCONT. Power switch is active in LOW state. The power
key circuit can be seen from the Display Circuit diagram on page 8.The
power key is connected to ROW4.