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are shown in a viewing window that appears on all
formats except repeats.T his window is displayed in the
upper left of the MFD and is referred to as the CAW
window or CAW box. A similar window on the upper
right of the MFD displays data-link legends. The message
window allows up to four CAWs to be displayed
at one time. Ifmore than four CAWs are to be displayed,
they scroll up from the bottom of the window at a rate
of one per second. Warning, caution, advisory legends
are independent of format and may be directed to a
specific crewmember. Figure 2-90 lists specific CAWs
and the crewmember to whom they are directed.
When warning, caution, or advisories are displayed,
pressing the pushbutton above the CAW window (PB6)
will remove the window and replace it with a boxed
CAW legend. Pressing the CAW pushbutton when the
legend is boxed returns the window and indications to
the display and removes the box from the legend.
Note
If a repeat format is on MFDl, the CAW
window is shifted to MFD2 in its current
state, open or closed (acknowledged). New
CAWs continue to be displayed on MFD2
until the repeat format is removed from
MFDI. If a repeat format is displayed on
both MFDI and MFD2 or on MFD3, receipt
of CAW data removes the repeat format
from MFDl and/or MFD3 and displays a
new format with the CAW in the appropriate
window. Receipt of a data-link advisory removes
the repeat format from MFDl (if appropriate)
and MFD3 and displays the menu
format with data-link advisories. (DD and
TID displays are repeats on MFDl; HUD,
DD, and TID displays are repeats on MFD2
and MFD3).
2.33.8.2 Test Patterns. The test patterns (Figure
2-91) appear on the HUD and MFD when the display
system is turned on with the MCs off during ground tests
and are generatedb y the DP.
Note
The large cross that appears on the HUD
when the HUD PWR switch is set to TEST
is generatedb y the HUD, independenot f the
DP, and is used to check HUD operation.
The HUD and MFD test patterns also momentarily
appear during IBIT and following a system reset. Both
test patterns are written in stroke and are used to check
stroke accuracy.
The MFD/KROMA test pattern (a future-growth
color display) includes an MFD TEST legend, used to
select the MFD RASTER test pattern.
The MFD RASTER test pattern allows for testing of
individual pushbuttons. When a button is pressed, a
solid-line box appears around the PRESS legend; pressing
the button again removes the box. The diamond and
blinking breakaway symbol are used to check RASTER
accuracy. Numerics 0 through 7 check RASTER shades
of grey. Selecting EXIT returns the display to
MFDKROMA test pattern.
2.33.8.3 HUD Formats. HUD format category
(TLN, A/A, A/G) is normally selected by use of MODE
buttons on the PDCP. However, air-to-air formats are
selected automatically ifthe pilot selects a weapon using
the weapon select switch on the stick grip; selects RDR
PLM/pAL, IR PLM/PAL (all with gear up) with the
sensor mode switch; IiAs the ACM guard; or if VSL
HWSL LO is selected with the sensor mode switch or
DD. Air-to-ground formats are automatically selected
when an air-to-ground weapon is selected on the SMS
format since the air-to-ground master mode is automatically
entered in this case. The HUD default format is
the TLN basic format (Figure 2-92). This format is displayed
on power-up and if DPI experiencesa cold start
(power outage of over 1 second).
The amount of information displayed on HUD formats
is pilot selectable by means of the FORMAT and
DECLUTTER switches on the PDCP. Symbols are also
added or deleted by the mission computer depending on
aircraft status, steering mode, and weapon selection.
When the FORMAT switch is set to BOTH, airspeed
and altitude information are displayed as boxed digital
readouts with analog dials. In the ANLG position, the
boxes are removed from the digital readouts. In the
DGTL position, only the boxed digital readout is presented
and the analog dials are removed.
The position of the HUDNDI ALT switch on the
PDCP selects the type of altitude data that is to be displayed,
either radar or barometric. If radar is selected
and a valid radar altitude exists (altitude ~5,000 feet and
AOB ~45”) radar altitude is displayed in the center of
the altitude dial. If the aircraft’s altitude exceeds 5,000
feet or the radar altitude becomes invalid, the system
automatically substitutes barometric altitude and a “B”
will flash to the right of the analog dial to indicate radar
　
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