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Honeywell
MK VI MK VIII EGPWS Installation Design Guide
Proprietary notice on title page applies
CAGE CODE: 97896 SCALE: NONE SIZE: A DWG NO: 060-4314-150 REV:
SHEET 165
4.2.3 DC Analog Inputs
Unless otherwise specified, Input Signal accuracy is 1% linearity +0.1% full scale offset.
4.2.3.1 Radio Altitude
Quantity 1
Input Impedance, each leg > 83 KΩ
Maximum Reverse Fault Current
< 200 µA
Signal Range 0 to 2500 feet
Input Voltage Range (V
RA
)
37.7V ≥ V
RA
≥ -2.5V
Conversion Range (V
C
)
29.7V ≥ V
C
≥ -0.4V
Input Filter
0.1 Second Low Pass, ± 10%
Broken Wire Detect Input will be biased to less than -50 feet
Pin Assignment (Signal Mnemonic):
Signal (+)
Return (-)
J1-64
J1-45
(RALT_H)
(RALT_L)
4.2.3.2 Low Level Glideslope
Quantity 1
Input Impedance, each leg > 2.5 MΩ
Reverse Fault Current
< 6.2 µA
Signal Range
±12 Dots
Input Voltage Range
±0.9 VDC
Input Filter
0.1 Second Low Pass, ± 10%
Input Type Differential
Common Mode Voltage Range (V
CM
)
11V ≥ V
CM
≥ -2V
Broken Wire Detect Input will be biased less than -15 dots
Pin Assignment (Signal Mnemonic):
+Up, Below Beam, Fly Up
+Down, Above Beam, Fly Down
J1-65
J1-46
(GSDEV_H)
(GSDEV_L)
4.2.3.3 Localizer Deviation or Low Level Glideslope Validity
This input can be configured as either a low level glideslope valid, or as a localizer deviation input. Installations that only
have the low level validity signal for glideslope can not activate the analog localizer input. See section 5.3.9 for more
information.
Quantity 1
Input Impedance, each leg > 2.5 M
Ω
Reverse Fault Current
< 6.2 µA
Input Filter
0.1 Second Low Pass, ± 10%
Input Type Differential
Common Mode Voltage Range (V
CM
)
11V ≥ V
CM
≥ -2V
When used as a validity input:
Pin Assignment (Signal Mnemonic):
+ Flag
– Flag
J1-30
J1-10
(GS_VAL_H)
(GS_VAL_L)
Active Voltage Range (Logic True) +160 to +840 mVDC
Inactive Voltage Range (Logic False) 0 to 50 mVDC
Broken Wire Detect Input will be biased less than –1 VDC
When used as a localizer input:
Pin Assignment (Signal Mnemonic):
CRS DEV + Fly Right
CRS DEV + Fly Left
J1-30
J1-10
(LCDEV_H)
(LCDEV_L)
Signal Range
±12 Dots
Input Voltage Range
±0.9 VDC
Broken Wire Detect Input will be biased less than -15 dots