Weather Radar On/Off; Localizer Validity Discretes (Mk V And Mk Vii Only); Attitude Validity Discretes; Airspeed Validity Discrete - Honeywell MK V Line Maintenance Manual

3.8.24 WEATHER RADAR ON/OFF

Type: WXR On/Off switch input
Signal Status: Radar turned on or off
WXR #1 On Discrete
WXR #2 On Discrete

3.8.25 LOCALIZER VALIDITY DISCRETES (MK V AND MK VII ONLY)

Two Localizer validity discretes may be used by EGPWS, one for each possible ARINC 547 Localizer Receiver
input.
Type: Validity from ARINC 547 Localizer receiver.
Signal Status: Valid or Invalid
Localizer Validity Discrete #1
Localizer Validity Discrete #2

3.8.26 ATTITUDE VALIDITY DISCRETES

Two Attitude validity discretes may be used by EGPWS, one for each possible Attitude sensor.
Type: Validity from Attitude sensor.
Signal Status: Valid or Invalid
Attitude Validity Discrete #1
Attitude Validity Discrete #2

3.8.27 AIRSPEED VALIDITY DISCRETE

Airspeed validity discrete may be used by EGPWS for the Airspeed sensor.
Type: Validity from Airspeed sensor.
Signal Status: Valid or Invalid
Airspeed Validity Discrete
CAGE CODE: 97896
EGPWS LINE MAINTENANCE MANUAL
Invalid =>
Invalid =>
Invalid =>
Invalid =>
Invalid =>
SCALE: NONE SIZE: A
Level 6 Audio readout
On => "Weather On"
Off => "Weather Off"
On => "Weather 2 On"
Off => "Weather 2 Off"
Level 6 Audio readout
Valid => "Localizer 1 Valid"
"Localizer 1 Invalid"
Valid => "Localizer 2 Valid"
"Localizer 2 Invalid"
Level 6 Audio readout
Valid => "Attitude 1 Valid"
"Attitude 1 Invalid"
Valid => "Attitude 2 Valid"
"Attitude 2 Invalid"
Level 6 Audio readout
Valid => "Airspeed Valid"
"Airspeed Invalid"
DWG NO.: 060-4199-180 REV: G SHEET 45 of 68