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Test From the Front Panel

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Test From the Front Panel

Test From the Front Panel - раздел Компьютеры, AIR TRAFFIC CONTROL SYSTEM Push And Release The Test Switch. All Front Panel Light Emitting Diode (Led) ...

Push and release the test switch. All front panel light emitting diode (LED) status indicators turn red for two seconds. After two seconds, the LRU STATUS turns green and the other LEDs remain red. Then all the LEDs go off for two seconds. At this time, the applicable LEDs come on to show the condition of the ATC transponder system. After 30 seconds, all LEDs go off. These are the LED status indicators and their related conditions:

· LRU STATUS (GREEN) - no LRU failures

· LRU STATUS (RED) - LRU failure

· ANTENNA TOP FAIL - top antenna fails

· ANTENNA BOT FAIL - bottom antenna fails

· ALTITUDE FAIL - altitude input from the ADIRU fails

· CONTROL FAIL - control panel input fails.

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Эта тема принадлежит разделу:

AIR TRAFFIC CONTROL SYSTEM

AIR TRAFFIC CONTROL SYSTEM General The ATC transponder also replies to mode S interrogations... ATC SYSTEM COMPONENT LOCATION... Flight Compartment...

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General
The air traffic control (ATC) ground stations interrogate the airborne ATC system. The ATC transponder replies to the interrogations in the form of coded information that the ground station uses.

Abbreviations and Acronymns
· abs - absolute · abv - above · ADIRS - air data inertial reference system · ADIRU - air data inertial reference unit · AD - air data · ADR - air data

General Description
These are the components of the ATC system: · Top antenna · Bottom antenna · ATC coaxial switch (2) · ATC/TCAS control panel · ATC transponder (2).

General
The ATC coax switches get power through the ATC ANT SWITCH circuit breaker. When you select ATC transponder 1 on the ATC/TCAS control panel, the ATC coax switches do not energize and the antennas c

Air Data
The air data inertial reference units (ADIRU) send air data to the ATC transponders. ATC transponder 1 gets air data at AD input 1 from the left ADIRU air data reference (ADR) bus 4. The l

Program Pins
Each ATC transponder has these program pins: · Airplane mode S address · Source destination identifier (SDI) · Maximum true airspeed. There are 24 airplane addre

General
The ATC transponders, TCAS, and the DME interrogators operate in the same frequency band. There is a suppression interface between these units. This prevents damage to the receiver circuits during

Front Panel Indications
The test switch starts a self-test. The light emitting diode (LED) status indicators on the front panel show for these conditions: · LRU STATUS (green), if there are no LRU failur

General
The ATC coax switches connect the active ATC transponder to the top and bottom ATC antennas. These are the electrical connector inputs: · ATC antenna switch circuit breaker

Transmit
The central processor unit (CPU) controls the transponder to reply to a mode A, mode C, or mode S interrogation. The mode format circuits use the identity code, airplane altitude and the unique 24-