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steering) has been selected
The HSD tacan format is selected by PB16 (HSD) if
the previously selected HSD format was tacan, or PBl 1
(X/Y) on HSD waypoint, or PB14 (boxed CDI) on HSD
tacan CDI. Figure 2-l 17 shows HSD tacan when tacan
steering has not been selected and also illustrates the
selected course line that appears after tacan steering
selection. Tbis format allows for the selection of tacan
CD1 (Figure 2-l 18) via PB14 (CDI).
Chapter 20 descrii the use of the HSD formats.
2-217 ORIGINAL
NAVAIR 01.Fl4AAD-l
I SYMBOL FUNCTION
Indicates the magnetic heading for Recon steering.
0
Recon Steering Symbol Provides elevation and azimuth steering information when in
reconnaissance mode. When steering symbol is coincident with flight path
marker, the aircraft is flying the bank command to the dynamic steering
point.
0 Target Designator, Displays target position. Positioned by on-board sensors or data link.
Hexagon When displayed on VDI formats, the degrees per inch scaling of the
symbol corresponds to the scaling of the rungs of the pitch ladder of the
format being overlaid (TLN. A/G, or A/A).
@ Command Ground Displays the path of the command ground track. When displayed on VDI
Track Line formats the degree scaling of rotation corresponds to the scaling of the
rungs of the pitch ladder for the format being overlaid (TLN, A/G, A/A).
Figure 2-113. MFD VDI Recon Overlay Format
ORIGINAL 2-218
NAVAIR 0%Fl4AAP1
RADAR TARGET OVERLAY
IRSTS TARGET OVERLAY
(AT&F50D-354-O
Figure 2-l 14. MFD VDI Radar and IRSTS Overlay Formats (Sheet 1 of 2)
2-219 ORIGINAL
NAVAIR OI-WWAD-1
SYMBOL
ladar Target Overlay
FUNCTION
Note
In the A/A radar track while scan (TWS) mode and no
weapon selected the basic VDI symbology and
format will generally be the same as A/A radar single
target track except that up to 4 target priority
diamonds may be displayed to show direction and
relative altitude of the 4 closest radar targets. FIST
TWS targets may be displayed simultaneously with
radar TWS targets. When this situation occurs, the
target data will pertain to the closest radar TWS
targets.
a
Radar target data Range, altitude, and closing velocity of the closest radar TWS target will be
presented.
Up to 4 target priority diamonds may be displayed to show direction and
relative altitude of the 4 closest radar targets. The numerics above the
diamonds indicate the target range to the nearest nautical mile.
RSTS Target Overlay Note
In the A/A IRST track while scan (TWS) mode and no
weapon selected the basic VDI symbology and
format will generally be the same as A/A radar track
while scan except that up to 4 target priority triangles
may be displayed to show direction and relative
altitude of the 4 closest IRST targets. IRST TWS
targets may be displayed simultaneously with radar
TWS targets. When this situation occurs, the target
data will pertain to the closest radar TWS targets.
a Target data Range, altitude, and closing velocity of the closest IRST TWS target will be
presented.
@ ::flgr target priority Up to 4 TWS target priority triangles may be displayed to show direction
and relative altitude of the 4 closest IRST targets.
Figure2 -114.M FD MI Radara ndI RSTSO verlayF ormats(S hee2t of 2)
2-220
NAVAIR Ol-Fl4AAD1
W._._A.. YPOIN-T . ____, N._-.O_ N-STE-.-E-- ERING._ ..__
SYMBOL FUNCTION
0
Compass rose The compass rose is a circular magnetic scale that consists of major
divisions at IO degree intervals, minor divisions at 5 degree intervals,
numerics at 30 degree increments and cardinal points at 90 degree
increments.
@ Wind
0
True airspeed
@
Ground speed
0
Lubber line
Displays wind direction in degrees and wind speed in knots.
Displays true air speed in knots.
Displays ground speed in knots.
The lubber line indication (diamond) is fixed at the top of the compass rose
and indicates aircraft magnetic heading.
@
Ground track line The ground track line rotates inside the compass rose to represent the
ground track.
0
ADF pointer The ADF symbol shows the direction of the nearest automatic direction
finder station.
Figure 2-l 15. MFD HSD Format (Sheet 1 of 3)
2-221 ORIGINAL
NAVAIR 0%FI4AAD-1
SYMBOL FUNCTION
@
Heading select pointer Displays selected or commanded heading. The symbol rotates outside the
compass rose when manually controlled by the heading potentiometer
knob located in the pilot’s crew station.
@
Tacan data Displays the range, bearing, and time-to-go to the tacan station selected
　
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