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selection or deselection of alignment mode, continuous
data source, and whether ENABLE (PB8
on NAV AID CORRECTIONS) was previously
selected. PB7 (GEO/REL) is used to select which
JTIDS navigation data is used for track corrections
and continuous position updates.
13. SAHRS ALIGN formats - These formats
WI-IRS ALIGN (NORM, h4AG, and SHDG) and
SAHRS ALIGN (CV), permit selection of data to
be used in SAHRS alignment. They are selected
via PB2 (NAV) on the HSD, OWN A/C, CV
DATA, or IFA formats. The format presentedd epends
on alignment mode selection and SAHRS
test status. Also, the display automatically transitions
to a SAHRS ALIGN format from a NAV
AID format when align mode changes from none
or IFA to an alignment mode.
ORIGINAL 2-196
NAVAIR Of-F14AAD-1
Figure Z- 107. Typical MFD Alphanumeric Format
Note
Refer to Chapter 20, for more infommtion on
navigation related formats.
14. MISSILE SUBSYSTEM formats - Two formats
display the status of the missiles; refer to
NAVAIROl-F14AAD-1A.
15. OBC formats - There are 10 OBC formats.
They are used to initiate BIT of the avionics equipment
and to display test results. OBC basic presents
an overall view of subsystem test results and
allows for selection of the other OBC formats. It
is selected via PB8 on the MENU1 format. It may
also be selected Tom the other OBC formats by
pressing the pushbutton for the boxed legend (the
format being displayed). The legends on OBC basic
show which groups of subsystems may be selected.
The OBC subsystem formats display
failures to the WRA level. A WRA legend is
brightly displayed when awaiting test, is flashing
during test, and is displayed at normal brightness
after test. An alignment quality indicator appears
on all OBC formats to inform the crew of the progress
of the alignment while tests are being performed.
16. MAINTENANCE - Displays a list of current
WRA failures. It is selected via PB9 (FAULT)
on the OBC formats. It is also selected via PB3
(FHF) on the FAILURE HISTORY FILE and PB4
(CSS) on the COOPERATIVE SOFTWARE
SUPPORT format. These legends appear boxed
before selection.
17. FAILURE HISTORY FILE - The FHF format
lists the WRA failures, the type of failure, if this
information is available to the MCS, and the time
of up to 10 failure occurrences since the file was
cleared. This format is available via PB3 @-IF) on
the MAINTENANCE and CSS formats.
18. COOPERATIVE SOFTWARE SUPPORT -
The CSS format is a diagnostic tool that can be
used by maintenance personnel to troubleshoot
system and WRA anomalies. It is selected via PB4
(CSS) on the MAINTENANCE andFIG formats.
2-197 ORIGINAL
NAVAIR 0%F14AAD-1
Not6
Chapter 38 includes a complete description
of the OBC, MAINTENANCE, FHF, and
CSS formats with a discussion of their use
and interpretation.
19. IRSTS SUMMARY - This format, which is
used in conjunction with other IRSTS formats,
provides information on the hooked IRSTS target.
It can be selected via PB13 (SMY) on the IRSTS
NORMAL and IRSTS CSCAN formats.
20. JTIDS DATA formats - There are four alphanumeric
JTlDS data formats. They are the OWN
A/C DATA, F-14D PPLI, Non-F-14D PPLI, and
TARGET formats. The OWN A/C format displays
own-ship PPLI data and JTIDS status. The PPLI
formats display the data received for the hooked
PPLI. The TARGET format displays data associated
with a hooked target (radar, IRST, or ITIDS).
The PPLI and TARGET formats are available for
a hooked symbol on either the TSD or TID.
2.33.9.4 VDI Formats. The VDI presentation on
the MFD provides essentially the same information as
that displayed on the HUD. However, in order to more
easily distinguish between ground, horizon, and sky,
shadings imulation is used. The format is generatedb y
internal raster scanning with the sky being presented
lighter than the ground.
VDI formats consist of TLN basic, TLN AWL, TLN
data link, TLN destination, TLN manual, TLN tacan,
A/A basic, A/A Phoenix search, A/A Phoenix track,
A/A Sparrow search, A/A Sparrow track, A/A Sidewinder
search, A/A Sidewinder track, A/A gun, A/G,
and TWS and recon overlays.
2.33.9.4.1 VDI TLN Formats. With TLN selected
ont he PDCP (TLN MODE button depressed)s, electing
VDI via PBS on the MENU1 or RECON DATA formats
presents one of a number of TLN formats on the MFD
6om which the selection was made. The format displayed
will depend on whether a steering mode has been
previously selected. Initially TLN basic, the MFD 1
　
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