Honeywell
MK VI MK VIII EGPWS Installation Design Guide
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CAGE CODE: 97896 SCALE: NONE SIZE: A DWG NO: 060-4314-150 REV: SHEET 308
7.1.2 Internal Data Outputs
Internal data outputs are only used for test purposes. Tables 7.1.2.1 through 7.1.2.6 are available for both MKVI and
MKVIII EGPWS. Tables 7.1.2.7 through 7.1.2.15 are are only output when the Honeywell Windshear Algorithm is
enabled (available only on the MKVIII EGPWS) and are only used for test purposes.
7.1.2.1 Geometric Altitude VFOM (135)
LABEL (Octal) 135 Units: Feet Max. Range: 32,768 Ft Approx. LSB: 0.125 Foot
Data Bits: 11 to 28 = 18 + = N/A Sign Bit: 29 Pad Bits: N/A
Transmit Interval (msec): 1000 ± 10% Data Type: 2’s Compliment Binary SDI Bits: 9, 10
7.1.2.2 Terrain Clearance (164)
LABEL (Octal) 164 Units: Feet Max. Range: ± 8,192 Feet Approx. LSB: 1.0 Foot
Data Bits: 16 to 28 = 13 + = Above Ground Level (AGL) Sign Bit: 29 Pad Bits: 11 to 15
Transmit Interval (mSec): 100 ± 10% Data Type: 2’s Compliment Binary SDI Bits: 9, 10
7.1.2.3 Geometric Altitude (261)
LABEL (Octal) 261 Units: Feet Max. Range: ± 131,072 Ft Approx. LSB: 0.125 Foot
Data Bits: 9 to 28 = 20 + = Above Sea Level (ASL) Sign Bit: 29 Pad Bits: N/A
Transmit Interval (msec): 1000 ± 10% Data Type: 2’s Compliment Binary SDI Bits: N/A
7.1.2.4 Computed Terrain Clearance (067)
LABEL (Octal) 067 Units: Feet Max. Range: ±131,072 Ft Approx. LSB: 1.0 Foot
Data Bits: 12 to 28 = 17 + = Above Ground Level (AGL) Sign Bit: 29 Pad Bits: N/A
Transmit Interval (msec): 1000 ± 10% Data Type: 2’s Compliment Binary SDI Bits: N/A
Bit Definitions
11 Set to 1 when Computed Terrain Clearance low accuracy is indicated
12 -28 Computed Terrain Clearance
7.1.2.5 Latitude – Selected EGPWS (310)
LABEL (Octal) 310 Units: Degrees Max. Range: ± 180 Degrees LSB: 0.00017166137695
Data Bits: 9 to 28 = 20 + = North Sign Bit: 29 Pad Bits: N/A
Transmit Interval (mSec): 1000 ± 10% Data Type: 2’s Compliment Binary SDI Bits: used for data
7.1.2.6 Longitude – Selected EGPWS (311)
LABEL (Octal) 311 Units: Degrees Max. Range: ± 180 Degrees LSB: 0.00017166137695
Data Bits: 9 to 28 = 20 + = East Sign Bit: 29 Pad Bits: N/A
Transmit Interval (mSec): 1000 ± 10% Data Type: 2’s Compliment Binary SDI Bits: used for data
7.1.2.7 Body Angle of Attack—Right (223) – MKVIII EGPWS w/ Windshear only
LABEL (Octal) 223 Units: Degrees/180 Max. Range: ± 180 Degrees Approx. LSB: 0.00549 Degree
Data Bits: 14 to 28 = 15 + = Nose Up Sign Bit: 29 Pad Bits: 11 to 13
Transmit Interval (mSec): 100 ± 20% Data Type: 2’s Compliment Binary SDI Bits: 9, 10