Wulfsberg Electronics Division CVC-151 用户手册
FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
Page 18
Publication No. 150-047012
Dec 2005
Rev. D
General Description CVN-252
The Chelton CVN-252 VHF Navigation Control Display is designed to control VHF navigation receiving systems
that combine VOR/LOC, glideslope, and marker beacon reception. The CVN-252 is a direct replacement for the
Chelton CD-412B Control Display Unit.
that combine VOR/LOC, glideslope, and marker beacon reception. The CVN-252 is a direct replacement for the
Chelton CD-412B Control Display Unit.
The CVN-252 Control Display can digitally display BEARING TO or RADIAL FROM any selected VOR station.
When an ILS frequency is selected by the Series III or FliteLine Navigation radio, the letters LOC appear below
the frequency on the display when RAD or BRG are selected.
When an ILS frequency is selected by the Series III or FliteLine Navigation radio, the letters LOC appear below
the frequency on the display when RAD or BRG are selected.
The CVC-252 Control Display incorporates microprocessor technology to achieve performance, reliability,
accuracy, and features not possible in previous systems. These include advanced filtering techniques, full-time
self-diagnostics, non-volatile frequency memory.
accuracy, and features not possible in previous systems. These include advanced filtering techniques, full-time
self-diagnostics, non-volatile frequency memory.
Special filtering circuits virtually eliminate noise, including rotor modulation noise in helicopter installations.
Self-testing begins when the system is turned on, and continues until turnoff. Faults detected result in a FAIL
annunciation.
Self-testing begins when the system is turned on, and continues until turnoff. Faults detected result in a FAIL
annunciation.
Non-volatile memory means that the last frequency selected is in system memory if the system is turned off, if
power is interrupted, or even if the system is removed from the aircraft.
power is interrupted, or even if the system is removed from the aircraft.
The CVN-252 Navigation Control Display Unit is designed to interface with Chelton FliteLine Navigation Radios
(CVN-251), Chelton Series III Navigation Radios (VN-411B in the VNS 41 System), and Collins Navigation
Radios with the ARINC 410 (2x5) Interfaces.
(CVN-251), Chelton Series III Navigation Radios (VN-411B in the VNS 41 System), and Collins Navigation
Radios with the ARINC 410 (2x5) Interfaces.
Limitations
NOTE: Installations of the CVN-252, and CCN-955 with the Series III or ARINC-410 digital interfaces which
include the optional DME Hold functionality are subject to certain limitations. In these installations, the aircraft
shall provide indication of the DME Hold status on equipment other than the FliteLine Control Display and within
the pilot's primary field of view.
include the optional DME Hold functionality are subject to certain limitations. In these installations, the aircraft
shall provide indication of the DME Hold status on equipment other than the FliteLine Control Display and within
the pilot's primary field of view.
Failure to meet these limitation guidelines violates the installation guidance set forth in this manual and may
lead to an unsafe aircraft operating condition.
lead to an unsafe aircraft operating condition.