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DME Audio
The DME 1 and DME 2 controls on the audio control panel are used to turn ON or OFF, and adjust the volume of, the DME transceiver audio. The DME morse code identifier is supplied to the audio integrating system. When listening to the NAV idents simultaneously, the DME is recognizable by its higher pitch.
DME Audio Control
Figure 17.10.50
NAVIGATION SYSTEMS Description Vol. 2 17.10.50
Oct 05/06
DME Tuning and Control
DME operating frequencies are paired and tuned with the VHF Nav frequencies. Each DME can continuously scan up to three channels. One channel is manually tuned, and provides data to the flight displays, while the remaining two channels may be automatically tuned by the FMS, and are used for multisensor navigation.
DME Hold
A DME hold function allows the crew to maintain a DME tuned to one frequency, while tuning the VHF Nav to a new frequency. This function is enabled via the CDU TUNE page, by pressing the line key adjacent to the DME legend. The HOLD text enlarges when selected, and the frquency being ’held’ is shown next to it.
The Hold function may also be selected by pressing the DME-H button on the cursor control panel (CCP). When pressed, the focus indicator on the MFD moves to the NAV recall frequency, allowing the VHF Nav to be tuned to a new frequency.
Independent DME Tuning
Independent tuning of the DME may also be carried out via the FMS CDU. This feature allows for a separate DME frequency to be tuned without having to select HOLD. This is done by entering a DME frequency onto the CDU scratchpad, followed by selecting the desired DME line key. Independent tuning in this manner cannot be carried out from the MFD tuning window.
DME Display
DME information is displayed on the PFDs and MFDs. The information is listed on the active navigation source data block on the PFDs. The DME distance includes the abbreviation “NM” (nautical miles) when DME tuning is coupled with the VHF Nav frequency. The abbreviation “NM” is removed and replaced with “H” when DME hold is selected. DME information is also presented in the same color as the navigation source. DME and related indications, such as time-to-go, are also provided at the top of the MFD. The color of the DME data presented on the MFD also corresponds with the navigation source.
NAVIGATION SYSTEMS Description Vol. 2 17.10.51
Oct 05/06
DME Indications
Figure 17.10.51
AUTOMATIC DIRECTION FINDING SYSTEM Description The aircraft is equipped with two automatic direction finding (ADF) systems. The ADF supplies aircraft bearing to station, and audio outputs to the navigation and audio systems.
Components and Operation
The ADF receivers are an integral and functional part of the VHF navigation receivers. A dual ADF antenna is located on the bottom of the fuselage, forward of the wing root.
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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(24)
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