BENDIX/KING
KAP 140
Page 3--5
Revision 2, Dec/2002
CS:15574F02
ITEM DESCRIPTION
Roll Servo Valid Open/Ground discrete input driven by the roll servo
valid discrete output. A ‘YES’ implies the input is
grounded and therefore the roll servo is valid.
Otherwise, ‘NO’ indicates input is open and roll servo
is invalid.
Roll Steering Valid >11V/Open discrete input driven by the roll steering
valid discrete ouput. A ’YES’ implies that the input is
greater than 11 volts and therefore the roll steering
is valid. Otherwise ’NO’ indicates input is invalid.
Analog Valid Internal discrete which reflects the status of internal
± 15V power supply references within the unit. A
‘YES’ implies these references are within monitor
tolerances. A ‘NO’ implies supply references are
outside acceptable tolerances.
Rate Gyro Valid 9V/open discrete input driven by rate gyro valid
output. A ‘YES’ implies the input is >9V and
therefore the rate gyro is valid. Otherwise, ‘NO’
implies the input is open and the rate gyro is invalid.
GPS Select Open/Ground discrete input connected to output of
a GPS receiver. A ‘YES’ implies the input is
grounded and therefore GPS is the selected NAV
sensor to the autopilot. Otherwise, ‘NO’ implies the
input is open and GPS is not selected.
Middle Marker Comparator input connected to the middle marker
annunciator located in the audio panel. A ‘YES’
implies input is above 2.3V threshold and therefore
middle marker is active. Otherwise, ‘NO’ implies the
input is below 1.8V threshold and the middle marker
is not active.
NOTE
An open input to the Middle Marker may also appear to be active in
--2501, --5101, and --5201 flavor FCCs.
Pitch Servo Valid Open/Ground discrete input connected to the pitch
servo valid discrete output. A ‘YES’ implies the input
is grounded and therefore the pitch servo is valid.
Otherwise, ‘NO’ implies input is open and the pitch
servo is invalid.
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