Wulfsberg Electronics Division CDM-451 用户手册

 

This section describes the displays and controls of the FliteDME Distance Measuring System. 

The FliteDME System requires the use of a frequency tuning unit, such as the VNS 41A VHF Navigation 
System, or other ARINC 429 tuning control unit.  However, if the CDM-451 being used is a  
400-041181-0012/0112 part number, then King Serial tuning information can be supplied via the KDI-572, 
part number 066-1069-15. 

An aircraft audio system, including headphones and/or speaker amplifier and speaker, is required to 
process DME ident audio outputs. 

All controls and displays used to operate the FliteDME Distance Measuring System are located on the 
SD-442B Selector-Display or the KDI-572 Master Indicator.  Refer to Figure 1 and Figure 2 for the 
following discussions: 

(1)  NAV PUSHBUTTON selects the NAV 1, NAV 2, or RNAV frequency tuning source.  A1, 2, 

or RNV is displayed in the lower left corner of the display window, to annunciate the tuning 
source. 

(2)  HLD PUSHBUTTON holds the last frequency selected by the NAV< freeing the NAV 

receiver to change frequency.  The frequency to which the DME is tuned is displayed in the 
right portion of the display window, with HLD and FRQ annunciated.  If the SD-442B is 
strapped as an RNAV repeater, RNV flashes for RNAV related functions when the HLD 
button is pressed. 

Publication No. 150-041762 

Page 3 

Rev. B 

Operator’s Manual 

July 2006