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Waming/caution/advisoty indications are displayed
on the MFD in the upper left readout, and data-link
JTIDS advisories are displayed in the upper right readout,
The readouts have the capability to present up to
four indications at a time with each indication consisting
ofup to eight charactersin length. When more than four
indications are designated for display within a readout,
the indications will cyclically scroll up from the bottom
at a rate of one indication per second. The warning/
caution/advisory indications are capable of being acknowledged
and removed from the display whereas the
data-IinkLITIDS advisories are not acknowledgeable.
When a warning/caution is displayed, the MASTER
CAUTION light flashes and the READ MFD caution
lights come on.
Systemsm essagesa re generatedb y the mission computer
to alert the crew of system conditions. Two categories
of system messages are displayed: computer
messages (those that can appear on any MFD format),
and OBC messages (those that can only appear on the
OBC and maintenance current-failure display formats),
The OBC and maintenance current-failure display
formats are capable of supporting both categories of
system messages simultaneously. The messages are
2-189 ORIGINAL
NAVAIR Ql-FlUAD-1
SYMBOL
0
Airspeed scale
0
AOA scale
@ Altitude scale
FUNCTION
Presents indicated airspeed in knots on a vertical tape.
Presents angle-of-attack in units on a vertical tape.
Presents altitude in thousands of feet on a vertical tape. The display
flashes when altitude is below 10,000 feet MSL.
@ Engine stall indicator Displays either R STALL on right side of MFD or L STALL on left side of
MFD to indicate a stalled engine.
0
Spin arrow Displays an arrow pointing either left or right indicating direction of spin.
@
Yaw rate scale Moving carat indicates yaw rate in degrees per second against a stationaty
scale.
Figure 2-104. MFD Spin Indicator Display
ORIGINAL 2490
SYMBOL FUNCTION
The warning/caution/advisory readout is referred to as the CAW box. The
CAW box is selected on and off via PB6. When the CAW box is not
displayed, the CAW select legend is displayed and boxed (CAW). The
CAW box displays warning messages steady and bright, cautions at
normal intensity flashing at a 3 Hz rate, and advisories at normal intensity
and steady. If the caution is displayable in the pilot cockpit, pressing the
MASTER CAUTION light causes the caution message to become steady.
0
Computer message The first row of ASCII characters is used to display the computer
messages for all display formats. See figure 2-61.24 for a listing of these
messages.
0
Data IinwJTlDS advisory Provides display of data link/JTlDS advisories. The data link JTIDS advisory
readout indications are not acknowledgeable. Indications that will be presented on
the HUD and MFD and their logic are described in NAVAIR
Ol-F14AAD-1A.
Figure 2-105. MFD WamingKaution/AdvisoIy and Message Overlays (Sheet 1 of 2)
2-191 ORIGINAL
NAVAIR 0%F14AAD-I
S_.Y..M.--B- OL I FUNCTION
@ OBC messages The second row of ASCII characters is used to display the OBC messages
on the OBC and maintenance current failure formats. See figure 2-81.24
for a listing of these messages.
0 Acknowledge (ACK) The ACK pushbutton legend appears whenever a system message is
pushbutton displayed. When the ACK pushbutton is pressed the message will be
removed from the MFD. System messages must be acknowledged before
new messages can be displayed.
Figure Z-105. MFD Warning/Caution/Advisory and Message Overlays (Sheet 2 of 2)
displayed on the upper center portion of the MFD and
consist of two rows of 19 ASCII characters, each row
displaying a categoryo f systemm essagesS. ystem messages
(Figure 2-106) appear as required on the
MFDs.They may be computer or OBC messagesW. hen
a system message is displayed an ACK (acknowledge)
legend appears above PB20. System messages remain
displayed until tbe ACK button is pressed. Should a
subsequenmt essageb e sent while one is already being
displayed, the first must be acknowledged before the
next will be displayed.
2.33.9.3 Alphanumeric (Data) Formats. Many
MFD formats have no symbols, but rather display navigation,
alignment, weapon, avionics, and diagnostic data.
Takeoff and landing checklii may alsnb e selectedU. se
of such formats is explained in the chapter where it pertains.
Data formats m identified by titles displayed just
below the upper pushbutton legends. When a format is
selected, its pushbutton legend is boxed. The following
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F-14D 飞行手册 Flight Manual 1(155)
