C.A.R.D. 060 Troubleshooting Guide download pdf (Page 45)

EGPWS LINE MAINTENANCE MANUAL

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3.8.24 WEATHER RADAR ON/OFF

Type: WXR On/Off switch input

Signal Status: Radar turned on or off

Level 6 Audio readout

WXR #1 On Discrete

On =>

Off =>

“Weather On”

“Weather Off”

WXR #2 On Discrete

On =>

Off =>

“Weather 2 On”

“Weather 2 Off”

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

Level 6 Audio readout

Localizer Validity Discrete #1

Valid =>

Invalid =>

“Localizer 1 Valid”

“Localizer 1 Invalid”

Localizer Validity Discrete #2

Valid =>

Invalid =>

“Localizer 2 Valid”

“Localizer 2 Invalid”

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

Level 6 Audio readout

Attitude Validity Discrete #1

Valid =>

Invalid =>

“Attitude 1 Valid”

“Attitude 1 Invalid”

Attitude Validity Discrete #2

Valid =>

Invalid =>

“Attitude 2 Valid”

“Attitude 2 Invalid”

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

Level 6 Audio readout

Airspeed Validity Discrete

Valid =>

Invalid =>

“Airspeed Valid”

“Airspeed Invalid”

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C.A.R.D. 060 Troubleshooting Guide Page 45

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