Wulfsberg Electronics Division CDM-451 User Manual
CDM-451 DISTANCE MEASURING SYSTEM
OPERATOR’S MANUAL
(3) TTS PUSHBUTTON displays the time-to-station in hours and minutes, from 0 to 8 hours, in
the right portion of the display window, when pressed. TTS annunciates below time. The
ground speed display returns when the TTS pushbutton is released.
ground speed display returns when the TTS pushbutton is released.
(4) DISTANCE DISPLAY shows distance to station in nautical miles. From 0 to 99.9 nautical
miles, the distance is displayed in one tenth mile increments. From 100 to 300 nautical
miles, the distance is displayed in one nautical mile increments.
miles, the distance is displayed in one nautical mile increments.
(5) GROUND SPEED DISPLAY shows ground speed from 25 to 800 knots in 1 knot
increments.
(6) The audio circuits will scan NAV 1 and NAV 2 stations for DME audio identification. When
an audio signal is detected the audio ident signal will appear on the aircraft’s audio system,
on the selected NAV/DME combination (DME 1 or 2).
on the selected NAV/DME combination (DME 1 or 2).
(7) The system can accommodate an optional RNAV/VOR mode switch for the display of RNAV
distance to waypoint, and ground speed, or time-to-station when in the RNAV mode.
B. KDI-572 Master Indicator
Figure 2. KDI-572 (P/N 066-1069-15) Control and Display Functions
(1) The FUNCTION SWITCH on the front of the KDI-572 has three positions OFF, ON, and
HLD. In the OFF position, the master indicator and the remote mounted DME are turned off.
In the ON position, the DME is channeled from the NAV 1 control head. In the HLD position,
the DME is channeled to the last selected NAV 1 frequency. To prevent the display of false
information, the KDI-572 will display dashes and the CDM-451 will stay in “search”,
whenever power is turned on, or momentarily interrupted in frequency HLD mode. Normal
operation is re-established by switching to the ON position.
In the ON position, the DME is channeled from the NAV 1 control head. In the HLD position,
the DME is channeled to the last selected NAV 1 frequency. To prevent the display of false
information, the KDI-572 will display dashes and the CDM-451 will stay in “search”,
whenever power is turned on, or momentarily interrupted in frequency HLD mode. Normal
operation is re-established by switching to the ON position.
(2) The KDI-572 displays DME range, speed, and time-to-station, as shown in Figure 2. In HLD
mode, an “H” is displayed to indicate the unit is in hold. “RNV” will be displayed when the
displayed distance, speed, and time-to-station are derived from an Area Navigation System.
displayed distance, speed, and time-to-station are derived from an Area Navigation System.
(3) When the CDM-451 is locked to a ground station, range is displayed to the nearest 0.1
nautical mile, from 0 to 99.9 nautical miles, and to the nearest 1 nautical mile, from 100 to
389 nautical miles.
389 nautical miles.
Page 4
Publication No. 150-041762
Operator’s Manual
Rev. B
July 2006