BENDIX/KING
KAP 140
Page 3--20
Revision 2, Dec/2002
CS:15574F02
ITEM DESCRIPTION
Dim Bus Aircraft lighting power bus input to the FCC to adjust
brightness of pushbutton and panel nomenclature.
Input range is 0 to 34.5 VDC. Resolution of display
value is 34 mV per bit. Validity based on internal
Analog Valid.
A/C Mon Aircraft +28V/+14VDC power bus input to the FCC.
Input range is 0V to +34.5 VDC. Resolution of
display value is 34mV per bit. Validity based on
internal Analog Valid.
Baro set Adjustment potentiometer located in the KEA 130A
altimeter used to supply a baro correction signal to
the FCC. The potentiometer has a resistance of 2500
ohms and is energized by a 4.0V reference supplied
by the FCC. Input range is 0 to 5V. Resolution of
display value is 4.9mV per bit. Validity based on
internal Analog Valid.
Trim Voltage Motor voltage supplied from Trim servo and
monitored by FCC. Input range is ± 33.4V.
Resolution of display value is 65 mV per bit. Validity
based on internal Analog Valid.
Baro Supply Voltage Reference voltage supplied by FCC to power a baro
correction adjustment pot located in the KEA 130A
altimeter. Reference voltage is 4.0V ± 0.2V.
Resolution of display value is 4.9mV per bit. Validity
based on internal Analog Valid.
+15V Supply Internal reference voltage used to power analog
signal conditioning circuits within the FCC.
Reference voltage is 15V ± 1.5V. Input range is 0 to
17.5V. Resolution of display value is 17.0 mV per bit.
Validity discrete is always ‘1’.
--15V Supply Internal reference voltage used to power analog
signal conditioning circuits within the FCC.
Reference voltage is --15V ± 1.5V. Input range is
--25.5V to +5V. Resolution of display value is 30 mV
per bit. Validity discrete is always ‘1’.
NAV Valid Low--level analog validity signal supplied from the
VOR/ILS receiver. Amplitude is based on strength of
radio signal. The NAV deviation signal is considered
valid when this output is above 180mV. Input range
is ± 402 mV. Resolution of display value is 0.78mV
per bit. Validity based on internal Analog Valid.