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Associated Data displayed in the scratchpad are for review purposes only, and cannot be
edited or transferred.
VAB 5 If NAVSTAT 1 is displayed on line 6 of the NAV page, VAB 5 is disabled.
Depression of VAB 5 with other than NAVSTAT 1 status while overflying a waypoint
will freeze the PPOS display on line 1 and changes the FLY TO legend on line 7 to UPD
TO. Reselection of VAB 5, or selection of any other page, will abort the update.
VAB 6
VAB 7
VAB 8
Presents the ADMIN sub page when depressed.
Not Active.
Not Active.
b. Administration (ADMIN) Page. The ADMIN Line 1. - Displays the example legend ð 12 /24/94 denotpage
(fig 3-25.2), is selected by depressing VAB 6 on the ing the current Month, Day, and Year., separated by
NAV Top Level Page. VAB functions are explained in slashes (/) in the left-hand character field. Update of
Table 3-22.2. The ADMIN page contains the following: this field is automatic through GPS data, and when updated,
the ð is blanked. If the system has no date available
(GPS or Manual), this field is displayed as dashed
(--I--/--). The current time example legend 15:42:18 ð
is displayed in the right-hand character field representing
Hours, Minutes, and Seconds, separated by a
colon(:), in that order. If GPS time is not valid,( ð is displayed),
manual update to the system is permitted.
Line 2. - Displays the centered page title ADMIN.
Line 3. - The left-hand character field displays an outlined
arrow and the legend ð A XXXXXFT reflecting
the current aircraft altitude. This altitude value is always
displayed in Feet only, and is referenced to MSL.
Positive altitude above MSL is displayed with a blank
preceding the altitude readout; negative altitude (below
MSL) is displayed using a minus (-) sign preceding
the altitude readout (A-XXXXXFT). The right-hand
character field displays the legend HGXX.XX ï denot-
Figure 3-25.2. ADMIN Page - Top Level ing the current Barometric pressure setting.
3-64.6 Change 4
TM 1-1520-238-10
Line 4. -The left-hand character field displays the legend
TKAE L XXX.. TKAE represents the current
Track Angle Error; L or R denotes Left or Right; and
the XXX signifies the angle error in degrees. The righthand
character field displays the legend XTKELXX.X.
XTKE represents the current Cross Track Error; L or R
denotes Left or Right; and XXX.X signifies the distance
in Kilometers or Nautical Miles, dependent upon units
selected by the the CPG, and displayed in line 7
(DSPL:KM or DSPL:NM).
Line 5. - Displays the legend MODE:LAND or
MODEWATER in the left-hand character field. The
right-hand character field displays the legend
HBCM ð if the DNS system status is GO; otherwise
this field is blanked.
Line 6. -Blank.
Line 7. - The left-hand character field displays the legend
MODE:UTM or MODE:L/L signifying coordinate
data entry methodology. The right-hand character field
displays the legend DSPL:KM or DSPL:NM signifying
metric system or nautical system, respectively, in use.
Line 8. - This is the scratchpad line for manual data
entry.
Table 3-22.2. ADMIN SUB-PAGE VARIABLE ACTION BUTTONS
Control/Display
VAB 1
Function
Used for manual entry of MONTH DAY YEAR update data (MMDDYY) when the
outlined arrow is ( ð ) displayed in character position 1 on line 1, and character string is
present in the scratchpad. Valid entries are: 01-12 for MM; 01-31 for DD; and 00-99 for
YY.
VAB 2 Used for manual entry ofAltitude update data. Positive altitude is assumed and does not
require a “+” sign; Negative altitude (below MSL) requires a minus (-) sign preceding the
altitude value. Altitude ranges are -900 feet MSL to 20000 MSL. Altitude is always
displayed in feet.
VAB 3 Used for selecting MODE:LAND or MODE:Water navigation operations. System
defaults to MODE:LAND at power up. Depressing VAB 3 toggles between two choices.
VAB 4 Selects the data presentation format to be used for PPOS, CPOS, WAYPOINT, and
TARGET coordinate data entry. System defaults to MODE:UTM at power up.
Depressing VAB 4 toggles between MODE:UTM AND MODE:L/L. Pages affected by
pressing VAB 4 are NAV, OFFSET, WAYPOINT and TARGET.
VAB 6 Used for manual entry of HOUR MINUTE SECOND update data (HHMMSS) when
the outlined arrow is ( ï ) displayed in character position 22 on line 1, and character
string is present in the scratchpad. Valid entries are: 00-23 for HH; 00-59 for MM; and
00-59 for SS.
VAB 6 Used for manual entry of HG (barometric pressure). Valid entries are: 27.92 to 31.92.
Data is entered in scratchpad as XXXX; the decimal point entry is not required. This
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