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(1) Set MODE switch to MGRS position (LAT/
LONG or GPS LDG position may also be used).
(2) Set DISPLAY switch to GS/TK/NAV M.
(3) The display indicates the current GPS and
navigation mode on the top line:
(a) Selected Fly to waypoint.
(b) EPE (GPS Estimated Position Error in
Meters. An asterisk (*) in the character position of the
EPE display indicates an EPE of greater than 999 or data
unavailable.
(c) GPS mode of operation:
M for mixed C\A and P/Y code GPS reception
Y for only Y code GPS reception.
(d) DGNS mode of operation:
C for combined Doppler and GPS
D for Doppler only
G for GPS only
R for remembered velocities
* for no navigation.
(e) Target destination where the present
position will be stored next time TGT/STR is depressed.
NOTE
In MGRS mode, ground speed is displayed in
km/hr; in LAT/LONG mode, ground speed is
displayed in knots.
Only mode C, G, and D may be selected as
the primary navigation mode. Modes R and *
are automatic fall back modes used when
both the Doppler and GPS are unavailable.
(4) Selection of GPS mode of operation:
As an example, consider selection of Y-only mode. Depress
KYBD key. Observe that the GPS mode blinks. To
enter Y (for Y mode) depress key LTR LEFT followed by
key 9. A Y will be displayed. Depress ENT key. The entire
display will blank out for less than one second and the
center display will now indicate: Y.
(5) Selection of DGNS mode of operation.
As an example, consider selection of GPS-only mode of
operation. Depress KYBD key twice. Observe that the
DGNS mode blinks. To enter G (for GPS mode) depress
key LTR LEFT followed by key 3. A G will be displayed.
Depress ENT key. The entire display will blank out less
than one second and the DGNS Mode will now indicate:
G (or * if GPS is not available).
(6) Ground Speed and Ground Track Angle are
displayed on lines 3 and 4.
f. Procedure for Entering/Displaying Present position
or One of the 100 Possible Destinations in MGRS.
The DGNS has the capability to display 100 destinations
(numbered 00 through 99).
100 destinations
-00 to 69 Standard Waypoints
-70 to 89 Data Load-only Waypoints, Observable
but not changeable via
CDU keyboard. Used for National
Airspace Data Such as VORs,
NDB’s and intersections.
-90 to 99 Target Store Waypoints (Usable
as Standard Waypoints)
TM 1-1520-240-10
3-3-25
As an example, consider display of destination number
25.
(1) Enter datum as described in paragraph j below.
(2) Set MODE switch to MGRS.
(3) Set DISPLAY switch to WP/TGT.
(4) Notice the current destination number displayed.
To display destination number 25 depress the
INC or DEC keys, or depress keys 2 then 5. this is a direct
key entry action.
(5) Observe that the current destination MGRS
zone, area, and easting/northing coordinates are now
displayed. The destination number 25 and location
name/ICAO identifier also appears in the display.
(6) Entry for destination coordinates and location
name/ICAO identifier: As an example, consider entry
of zone 18T, area WN, easting 5000, northing 6000, and
ICAO identifier BANDO.
(7) To enter keyboard mode depress the KYBD
key. Observe “kybd” displayed in the bottom right corner
of the display. (Destination number blinks.) Depress
KYBD again. (Zone field blinks.) To enter 18T depress
keys 1, 8, LTR MID, 7.
(8) Depress KYBD. (Area and northing/easting
blinks.) To enter WN5000 6000 depress keys LTR MID,
8, LTR MID, 5, KYBD, 5, 0, 0, 0, 6, 0, 0, 0.
(9) Depress KYBD. (Location name/ICAO identifier
blinks.) To enter BANDO depress keys LTR MID, 1,
LTR LEFT, 1, LTR MID, 5, LTR LEFT, 2, LTR RIGHT, 5.
(10) To store the displayed information into the
selected destination display position depress the ENT
key.
NOTE
To access P, depress the LTR LEFT key followed
by the 6 key. Another way to access P
is to display waypoint 99 then depress the INC
key or display waypoint 00 then depress the
DEC key.
Way points cannot be recalled by location
name/ICAO identifier.
g. Procedure for Entering/Displaying Present Position
or one of the 100 Possible Destinations in LAT/
LONG.
The DGNS set has the capability to display 100 destinations
(number 00 through 99).
100 destinations
-00 to 69 Standard Waypoints
-70 to 89 Data Load-only Waypoints, observable
but not changeable via
CDU keyboard. Used for National
Airspace Data Such as VORs,
NDB’s and intersections.
　
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