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AHAG
Validity : GTX 327 34-53 00 (B.) Page 2 NOV 01
A - E36 transponder antenna
B - A56 transponder
4. OPERATION (Figure 2)
A56 transponder energization is obtained by means of "RADIO MASTER" switch.
When the pushbutton is set to "ON", the transponder is energized and replies to mode "A" identification interrogations. The identification code, entered into the transponder by means of the code selection pushbuttons (pushbuttons from "0" to "7"), is transmitted to the ground station.
When "VFR" pushbutton is pressed, the identification code shown on the central section of the display is replaced by the programmed VFR code.
When A56 transponder is operating in mode "C" ("ALT" pushbutton), the altitude data provided by M76 encoding altimeter are transmitted to the ground station. A56 transponder, with "FUNC" pushbutton used to select the display of flight level data, shows a flight level "FL" in hundreds of feet on the right section of its display. The displayed altitude is not the true altitude but the pressure altitude not corrected by the local pressure (reference pressure 29.92 in.Hg, that is 1013.25 hPa).
For example : if the display reads FL 075, the transmitted altitude is 7500 ft.
A56 transponder indicates the selected mode ("ALT", "ON" or "STBY") on the left section of its display.
AHAG
Validity : GTX 327
Page 4
34-53-00
(BU) NOV 01
A56
TRANSPONDEUR
TRANSPONDER
INTERROGATEUR
DME
DME
INTERROGATOR
ALTIMETRE CODEUR
OU
CODEUR ALTITUDE
ENCODING ALTIMETER
OR
ALTITUDE ENCODER
2A
u) PANNEAU
FUSIBLES
FUSES PANEL
E36
ANTENNE
TRANSPONDEUR
XPDR ANTENNA
"XPDR"
•
D5 F2
0
"RM.SWITCH"
0
•
D4 Fl
RELAIS GENERAL RADIO
RADIO MASTER RELAY
°Mt ON
INTERRUPTEUR
GENERAL RADIO
RADIO MASTER SWITCH
A56 transponder — Schematic
Figure 2
AHAG
Validity : GTX 327 34 53 00 Page 5 NOV 01
PAGE INTENTIONALLY LEFT BLANK
AHAG
Validity : GTX 327 34-53 00 (BU) Page 6 NOV 01
TRANSPONDER
DESCRIPTION AND OPERATION
1. GENERAL (Figures 1 and 1A)
The transponder allows the operational air traffic service to identify the aircraft. The optional system consists of :
- an A56 transponder,
- an E36 antenna.
The transponder can receive altitude information from the optional encoding altimeter or altitude encoder -refer to 34-11-00.
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本文链接地址：TB20 MAINTENANCE MANUAL 34 导航 TB20飞机维护手册 2(25)
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