Honeywell MK VI - Manual (Page 165)

Honeywell
MK VI MK VIII EGPWS Installation Design Guide
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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 K Ω
Maximum Reverse Fault Current < 200 µ A
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 M Ω
Reverse Fault Current < 6.2 µ A
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 µ A
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