TM 1-1520-238-10
3-52
Change 3
The waypoints are organized on pages as shown in table
3-15.
Table 3-15.
Waypoints
Page
Waypoints
1
Home 1, 2
2
3, 4, 5
3
6, 7, 8
4
9, 10, 11
5
12, 13, 14
6
15, 16, 17
7
18 and 19
The Up/Down arrow keys can be used to scroll through
the FPLN dictionary pages. An * is shown immediately af-
ter the storage location currently being used for FLY TO
computations and it cannot be changed until some other
location is chosen to FLY TO. The page has the following
data organization:
Line 1. Displays the coordinate location data.
Line 2. Displays the magnetic variation and spheroid as-
sociated with the coordinate data above it.
Line 3. Displays the next coordinate location data.
Line 4. Displays the magnetic variation and spheroid as-
sociated with the coordinate data above it.
Line 5. Displays the next coordinate location data.
Line 6. Displays the magnetic variation and spheroid as-
sociated with the coordinate data above it.
Line 7 Blank.
Line 8. Scratchpad for data input.
3.15.3 Data Entry Procedures.
The CDU display pres-
ent position can be manually updated, waypoint locations
stored, FLY TO destination selected and other data en-
tries made via the CDU keyboard. Keyboard entries ap-
pear on the scratchpad. The CDU checks the validity of all
data entered before it transfers the data to the appropriate
location on the display.
a. General Data Entry and Data Correction. General
data entry and data correction procedures follow the ex-
ample of PPOS, var, sph, and MODE UTM on the NAV
top level page.
DATA ENTRY EXAMPLE
1. Use the keyboard keys, (fig 311), enter the fol-
lowing into the scratchpad:
12SVN32620377E12C5
NOTE
The last character (5) is deliberately erro-
neous.
Observe that each character appears on
the scratchpad, left justified, as it is en-
tered.
2. PPOS Press. Observe that the scratchpad dis-
play alternates between the data entered and
the prompt ERROR.
3. CLR FAB Press. Error prompt is cleared and
the data in the scratchpad has the cursor posi-
tioned under the error as shown below:
12SVN32620377E12C5_
NOTE
The cursor is positioned under the first error
detected. If more than one error is detected,
the cursor moves left to right to the next er-
ror. Continue editing until all data is cor-
rected.
4. Enter 6. Observe that 5 changes to 6.
5. PPOS Press. Observe that the scratchpad is
now blank and lines 1 and 2 of the CDU display
appear as follows:
PPOS
12S
VN
3262
0377
var
E012.0
sph CL6
3.15.4 Power Up Procedures.
The steps in this pro-
cedure list actions required (and expected CDU display
results) to ready the DNS for flight. Refer to Data Entry
(para 3.15.3 ) for detailed techniques and parameters of
such actions as:
UTM or L/L Coordinate Entries
Hover Bias Calibration
General Data Entry and Error Correction
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