Document Number:
MAN – DAPS440-SW
Rev:
D
Revision Date:
09/14/2010
Page 7 of 15
+28VDC
+28VDC
TOP RIGHT INDICATOR
TOP LEFT INDICATOR
BOTTOM LEFT INDICATOR
BOTTOM RIGHT INDICATOR
GROUND
NORMALLY OPEN
NO CONNECTION
4-POSITION LED SWITCH
SWITCH
SWITCH
TOP RIGHT
TOP RIGHT
BOTTOM RIGHT
BOTTOM RIGHT
TOP LEFT
TOP LEFT
BOTTOM LEFT
BOTTOM LEFT
Switch Wiring Suggestion:
The diagram below shows a suggested wiring of the switch. From the DB-25 connector,
use the Normally Open pin and a DC ground (switch common) to establish the switch
connection.
To control the indicators, supply 28V DC power to the common Anode of the indicators (or
the power side). Connect each Cathode (or ground side)
f
or each indicator to the DB pins
as indicated in this manual.
If there is a ground difference between the unit and the aircraft, this might cause the
switches not to operate properly. The DB-25 connector includes 28V DC and ground to
supply to the switches if such problem arises.
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