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Volume 2
17−10−71
FLIGHT MANAGEMENT SYSTEM (FMS) (CONT'D)
FMS Schematic
GF1710_143
FMS 1 FMS 2
VHF
COM 2
FMS 1 FMS 2
GNSSU
1
AFCS
EFIS
DAU
IRS
ADC
FWC
FMS 3
(IF INSTALLED)
FMS 3
VHF
COM 1
HF
COM 1 LSS GPWS HF
COM 2
VOR
DME
ADF Tune
COM Tune
VHF
COM 3
GNSSU
2
(IF INSTALLED)
(IF INSTALLED) (IF INSTALLED)
RSB
ASCB
NAVIGATION
Flight Crew Operating Manual Rev 2A, Apr 11, 2005
CSP 700−5000−6
Volume 2
17−10−72
NAVIGATION DISPLAY UNIT (IF INSTALLED)
The Navigation Display Unit (NDU), also referred to as Lasertrack IV (LTRK), located on the pilot’s
side panel, is a combined navigation computer and display unit, that is used to initialize up to three
inertial reference units (IRU) and to display navigation data based on a ninewaypoint
flight plan and
IRS inputs.
GF1710_144
ON KEY
FROM/TO/WPT
DATA DISPLAY
SPECIAL FUNCTION
KEYBOARD
NDU FAULT
ANNUNCIATOR
SYSTEM SELECT
KEYBOARD
DATA SELECT
DISPLAY
KEYBOARD
DATA ENTRY
KEYBOARD
The following describes the controls of the NDU:
ON Key
The ON Key is used to power on and power off the NDU.
NAVIGATION
Rev 2A, Apr 11, 2005 Flight Crew Operating Manual
CSP 700−5000−6
Volume 2
17−10−73
NAVIGATION DISPLAY UNIT (IF INSTALLED) (CONT'D)
Data Entry Keyboard
The data entry keyboard is used to enter, display, modify, or transmit initialization, leg change and
flight plan data. The data entry keyboard consists of the following:
GF1710_146
The enter key is used to accept entered data that is being displayed on the data display. A
cue light illuminates to indicate that operator action is required.
The clear key is used to remove entered data and clear the display. A cue light illuminates
to indicate that operator action is required.
The back key is used to select the number and position of the previous waypoint for display
when the WPT cue light is illuminated.
Special Function Keyboard
The special function keyboard consists of the following:
The magnetic/true north key is used to indicate north reference. When the M cue light is
illuminated, the NDU displays data referenced to magnetic north.
When the T cue light is illuminated, the NDU displays data referenced to true north.
The bright/dim key is used to control the lighting of the NDU display. When first pressed
and held, the display intensity increases until the brightest level is reached. When pressed and
held a second time, the display intensity decreases until the dimmest level is reached.
The test key is used to start a test of all NDU annunciators, cue lights and display.
System Select Keys
The system select keys are used to select data for display from IRU1, IRU2, or
IRU3. The NDU displays data from one IRU at a time. The selected IRUs cue light is illuminated.
NAVIGATION
Flight Crew Operating Manual Rev 2A, Apr 11, 2005
CSP 700−5000−6
Volume 2
17−10−74
NAVIGATION DISPLAY UNIT (IF INSTALLED) (CONT'D)
Data Select Keyboard
The data select keyboard is used to select data for display. Each key contains a cue light that
indicates what type of data has been selected. When the WPT, LEG CHG, POS, or HDG STS key
is pressed, the operator can enter new data or modify the data that the NDU is displaying. The
data select keyboard consists of the following:
GF1710_156
The waypoint key is used to build and display a flight plan consisting of one to nine
waypoints. When this key is repeatedly pressed, the NDU displays the successive flight plan
waypoints by number and position.
The leg change key is used to define or modify the current flight plan leg by displaying the
FROM and TO waypoint numbers. The current leg must be defined before navigation data can be
defined and displayed.
The crosstrack/desired track key is used to select and display the crosstrack error in
nautical miles from the current leg and the desired track of that leg.
The distance/time key is used to select and display the distance and time to the TO
waypoint based upon present position and current ground speed.
The track/ground speed key is used to select and display the current track and ground
speed.
The position key is used to initialize and display the present position of the airplane.
The wind direction/wind speed key is used to select and display the current wind direction
and wind speed.
　
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