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VHF Navigation System Components
Figure 17.10.37
NAVIGATION SYSTEMS Description Vol. 2 17.10.35
Oct 05/06
VHF Navigation Radio Audio
The NAV 1 and NAV 2 controls on the audio control panel are used to turn ON or OFF, and adjust the audio volume of, the navigation radios. The VOICE/BOTH switch filters the tone from the NAV ground station beacons when the VOICE position is selected.
Marker beacon audio may also be monitored through the MKR 1 and MK 2 switches. The outer marker provides a 400 Hz tone, the middle marker provides a 1300 Hz tone, and the inner marker provides a 3000 Hz tone.
VHF Navigation Radio Audio Control Figure 17.10.38
VHF Navigation Radio Tuning
Tuning of the VHF Nav radios may be carried out using the control display units (CDUs) associated with the flight management system (FMS). Alternatively, the cursor control panels (CCPs) may be used to control a tuning menu presented on the MFDs.
The VHF Nav radios may also be automatically tuned by the FMS. The radios include circuitry that automatically identifies navigation ground stations. This makes it possible for the FMS to query its navigation database, and automatically tune the navigation radios.
All tuning input is provided directly to the associated navigation radio, as well as to the integrated avionics processing system (IAPS). The IAPS echoes the display of radio tuning information on all MFDs and CDUs, regardless of the tuning method used.
NAVIGATION SYSTEMS Description Vol. 2 17.10.36
Oct 05/06
CDU Tuning
Tuning and control of the VHF Nav radios may be carried out from the CDU TUNE page. The page is accessed by selection of the TUN function key on the CDU. The TUNE page provides primary control of all installed radios, including the VHF navigation radios.
VHF navigation radio titles, NAV1 and NAV2, are shown on page 1 of the TUNE page. Active frequencies appear in green on the data line directly below the corresponding radio title. There is no recall frequency line key on the CDU for the VHF Nav radios.
A new frequency may be entered by direct tuning, selecting a numbered preset frequency, or by permitting the FMS to carry out automatic tuning.
Direct tuning from the CDU is carried out by first keying in the desired frequency on the scratchpad, followed by pushing the radio’s line key. This moves the scratchpad frequency to the active frequency line.
NAVIGATION SYSTEMS Description Vol. 2 17.10.37
Oct 05/06
CDU TUNE Page
Figure 17.10.39
NAVIGATION SYSTEMS Description Vol. 2 17.10.38
Oct 05/06
NAV CONTROL Page
The VHF Nav radio’s CONTROL page (NAV 1, 2 CONTROL) is accessed from the TUNE page by pressing the key adjacent to the radio title.
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公务机翻译 www.aviation.cn
本文链接地址：庞巴迪挑战者605公务机机组操作手册 CL605-CHAPTER 17 -导航系统 NAVIGATION SYSTEMS(19)
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