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value can be 0 through 5.
Right-hand character field displays the legend P CODE
X, indicating the number of P CODE (Precise Positioning
Service PPS) satellites the GPS receiver is using in its
navigation solution. Displayed value can be 0 through 5.
3-64.20 Change 3
19
TM 1-1520-238-10
Line 5. - Right-hand character field displays the legend C
CODE X, indicating the number of C CODE (Standard
Positioning Service - SPS) satellites the GPS receiver is
using in its navigation solution. Displayed value can be 0
through 5.
Line 6. - Displays the System Annunciator Data.
Line 7. - Left-hand character field displays status
prompts indicating operational status of the GPS Precise
Positioning Service - PPS feature. Displayed prompts
and their meaning are:
KIU VER Keys in Unit Verified
KIU UNVER Keys in Unit Unverified
KIU INCOR Keys in Unit Incorrect
KEY PARITY ERR Key Parity Error
INSUFF KEYS Insufficient Keys
The right-hand character field displays the legend
DATAO.
Line 8: Blanked.
Program Menu (PGM MENU) Page. The PGM MENU
top level page is accessed by depressing the PGM FAB
on the CDU. The PGM MENU page allows access to the
maintenance-related functions of Boresight EGI (BST
EGI), FCC CONFIG, AWS Harmonization (AWS HARM),
FCC Memory READ (READ) and the Auxiliary
Alphanumeric Display (AND).The PGM MENU top level
page is shown in figure 3-26.18 and discussed below.
VAB functions are explained in Table 3-22.12.
Figure 3-26.18. PGM MENU Page
Line 1. - Left-hand character field displays the legend
OBST EGI. The right-hand character field displays the
legend AWS HARMO.
Line 2. - Displays the centered page title PGM MENU.
Line 3. - Blanked.
Line 4. - Blanked.
Line 5. This line displays the centered legend FCC
CONFIGS. The downward pointing arrows direct the
operator’s attention to the FCC software version data
displayed on line 6.
Line 6. Displays the centered FCC software version.
Line 7. Left-hand character field displays the legend
OREAD. The right-hand character field displays the
legend AND>.
Line 8: Blanked.
Table 3-22.12. PGM MENU PAGE VAB OPERATIONS
Control/Display Function
VAB 1 Presents the BST EGI page.
VABs 2-3 Inactive.
VAB 4 Presents the READ page.
VAB 5 Presents the AWS HARM page.
VABs 6-7 Inactive.
VAB 8 Presents the AND page.
Change 3 3-64.21
20
TM 1-1520-238-10
a. Boresight EGI (BST EGI) Page. The BST EGI page
is accessed by depressing VAB 1 on the PGM MENU top
level page. The BST EGI top level page is shown in
figure 3-26.19 and discussed below. VAB functions are
explained in Table 3-22.13.
Figure 3-26.19. BST EGI Page
Line 1. - Blanked.
Line 2. - Displays the centered page title BST EGI, fol
lowed by -MR-(milliradians).
Line 3. - Left-hand character field displays the legend
OAZ+XX..X
Line 4. - Blanked.
Line 5. - Left-hand character field displays the legend
OEL+XLX. Right-hand character field displays the
legend ROLL+XX.XCO.
Line 6. - Blanked.
Line 7. - Left-hand character field displays the legend
OEGI RESET. The right-hand character field displays the
legend PGMO.
Line 8: Scratchpad.
Table 3-22.13. BST EGI PAGE VAB OPERATIONS
Control/Display Function
VAB 1 Inactive.
VAB 2 With the value for Azimuth boresight correction angle (Units in milliradians) in the scratchpad
(E.g. -12.1), depressing VAB 2 enters the scratchpad value into the system. The Azimuth
boresight correction angle entry range shall be +/99.9 mr. Azimuth boresight correction angle
entry must be three digits (additional characters are ignored). It is not necessary to enter the
decimal point; it will be automatically placed. A positive value is assumed if a +/sign is not
entered.
VAB 3 With the value for Elevation boresight correction angle (Units in milliradians) in the scratchpad
(E.g. -12.1), depressing VAB 3 enters the scratchpad value into the system. The Elevation
boresight correction angle entry range shall be +/99.9 mr. Elevation boresight correction angle
entry must be three digits (additional characters are ignored). It is not necessary to enter the
decimal point; it will be automatically placed. A positive value is assumed if a +/sign is not
entered.
VAB 4 Initiates an INS Reset action.
VABs 5-6 Inactive.
3-64.22 Change 3
21
TM 1-1520-238-10
Table 3-22.13. BST EGI PAGE VAB OPERATIONS - continued
Control/Display Function
VAB 7 With the value for Roll boresight correction angle (Units in milliradians) in the scratchpad (E.g. -
　
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