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3. OPERATION
NOTE : For equipment operation and maintenance, refer to the supplier's Maintenance Manual.
ACAD
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Variante de localisation Alternate location
®
VHF capability — Identification and location of components
Figure 2
VHF capability — Identification and location of components
Figure 3
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VHF CAPABILITY
DESCRIPTION AND OPERATION
1. GENERAL (Figure 1)
The optional VHF capability system allows operating the radiocommunication means (VHF) as well as the
radionavigation messages (VOR, DME, ADF and MKR).
The VHF capability system also ensures the interphone function and allows receiving warning information. The system consists of :
— an A50 audio control box,
— an A136 interphone,
— a cabin loudspeaker,
— connecting jacks,
— push—to—talk switches on R.H. and L.H. control wheels,
— a hand—held microphone.
The A50 audio control box includes also a marker beacon receiver — refer to 34-31-00.
The system receives audio signals from :
— COM 1 installation (if installed) — refer to 23-12-00,
— COM 2 installation (if installed) — refer to 23-13-00,
— the Marker system (if installed) — refer to 34-31-00,
— the NAV 1 installation (if installed) — refer to 34-51-00,
— the NAV 2 installation (if installed) — refer to 34-52-00,
— the automatic direction finder system (if installed) — refer to 34-54-00,
— the DME installation (if installed) — refer to 34-55-00. The system receives unmuted audio signals or warning tones from :
— the global positioning system (GPS) (if installed) — refer to 34-57-00,
— the altitude / vertical speed selector (if installed) — refer to 22-12-00,
— the aural warning unit (landing gear—stall) only for aircraft equipped with retractable landing gear — refer
to 31-50-00.
The A50 audio control box is electrically supplied by "BUS 1" and "BUS 3" bars. The A136 interphone is electrically supplied by "BUS 2" bar.
ADAA
Validity : KMA 24 — 02 with interphone 23-11-00 (BM) Page 1
DEC 99
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本文链接地址：TB20 MAINTENANCE MANUAL 23 COMMUNICATIONS TB20飞机维护手册 通讯(13)
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