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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 281
BIT 23 (1) = TENS of the MONTH (0 or 1)
BITS 24 to 27 (4) = UNITS of the DAY (0 to 9)
BITS 28 to 29 (2) = TENS of the DAY (0 to 3)
6.2.19 Control Word (154) - MFD
CONTROL WORD – MFD
Source: MFD
LABEL (Octal) 154 Units: N/A Max. Range: N/A Approx. LSB: N/A
Data Bits: Discrete word, see below + = N/A Sign Bit: N/A Pad Bits: 9, 10
Transmit Interval (mSec): 50 ms Data Type: Discrete SDI Bits: N/A
DAU WORD BIT ASSIGNMENTS
Bit No. DEFINITION
11 – 13 Not Used by EGPWC
14 Terrain Display Overlay Active
15 – 29 Not Used by EGPWC
6.2.20 Control Word 2 (271/273)
CONTROL WORD 2 – WXR
DISPLAY WD 1 – NAV DISPLAY BUS
Source: WXR Control Panel/Nav Display
LABEL (Octal) 271
For FDS-255 display the label is 273.
Units: N/A Max. Range: N/A Approx. LSB: N/A
Data Bits: Discrete word, see below + = N/A Sign Bit: N/A Pad Bits: 9, 10
Transmit Interval (mSec): 100 to 120 ms Data Type: Discrete SDI Bits: N/A
CONTROL WORD 2 BIT ASSIGNMENTS
Bit No. DEFINITION
11 Special Function, Not Used by EGPWC
12 Anticlutter, Not Used by EGPWC
13 Windshear, Not Used by EGPWC
14 – 23 Spares
24 – 29 Display Range as specified in the table below
BITS 24 to 29 = Display Range (5 to 320NM, format as follows)
Bit 29 Bit 28 Bit 27 Bit 26 Bit 25 Bit 24 RANGE
00000 0 320 NM
00000 1 5 NM
00001 0 10 NM
00010 0 20 NM
00100 0 40 NM
01000 0 80 NM
10000 0 160 NM
Note: The range bits are additive; e.g., if bits 24 and 26 = 1 then the range would be 25 NM.
6.2.20.1 Control Word 2 (271/273) Type 2
CONTROL WORD 2 – WXR (Type 2)
DISPLAY WD 1 – NAV DISPLAY BUS
Source: IOC Bus
LABEL (Octal) 271
For FDS-255 display the label is 273.
Units: N/A Max. Range: N/A Approx. LSB: N/A
Data Bits: Discrete word, see below + = N/A Sign Bit: N/A Pad Bits: 9, 10
Transmit Interval (mSec): 100 ms Data Type: Discrete SDI Bits: N/A