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Altitude Source Switch.

Use the two-position switch to set the source of altitude data for the ATC transponder.

When you set the switch to the number 1 position, ADIRU 1 supplies the altitude data. When you set the switch to the number 2 position, ADIRU 2 supplies the altitude

data.

 

The XPNDR FAIL light comes on for these conditions:

- Transponder failure

- Antenna failure

- Control data failure.

- Altitude input failure.

 

When you set the switch to the number 1The ATC/TCAS control panel controls the TCAS computer

 

 

 

The ATC/TCAS control panel controls the TCAS computer.

 

 

TEST SWITCH

You can use the test button in the center of the switch to do a test of the ATC and TCAS systems.

 

Electronic Equipment Compartment

The TCAS computer is in the electronic equipment

compartment.

 

Flight Compartment

These are the components in the flight compartment that

interface with TCAS:

Left electronic flight instrument system (EFIS) control panel

Left outboard display unit

Left inboard display unit

Right EFIS control panel

Right outboard display unit

Right inboard display unit

ATC/TCAS control panel.

 

 

 

TCAS - ANTENNA LOCATION

General

The top TCAS directional antenna is at station 385 on top of the fuselage. The bottom TCAS directional antenna is at station 305 on the bottom of the fuselage.

 

TCAS - POWER, ANTENNAS, ANALOG, DISCRETE INTERFACES AND PROGRAM PINS

General

The TCAS computer has analog and discrete interfaces with these components:

Top and bottom TCAS directional antennas

Landing gear lever switch

Proximity Switch Electronics Unit (PSEU)

Ground proximity warning computer (GPWC)

ILF 404, 405, 410, 414-417, 422-429, 451, 501-509, 510-517, 519,

520-527, 536, 541, 542, 551

Weather radar

DME/ATC/TCAS suppression coax tees

Display electronic unit (DEU) 1 and 2

Remote electronics unit (REU).

Program pins control the configuration of the TCAS computer.

Power

The TCAS computer gets 115v ac from AC transfer bus-1 through the TCAS circuit breaker on the P18 circuit breaker panel.

Antennas

There are two TCAS directional antennas. The TCAS directional antennas receive traffic airplane reply signals. They also transmit the TCAS interrogation signals.


Date: 2016-03-03; view: 1023


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