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being tested would be.
In addition to testing the operation of the various
modes, the test target can also be used to check many
radar controls (such as display controls) and verify computer
functions such as hooking. For example, the RIO
can hook the test target (which fmt appears as an unknown
target) on the TID, designate it hostile (noting
symbol change); initiate single-target track (noting operation
of ANT and RDR indicator lamps); enter data
pertaining to the target; a&even test the track hold
function after deselecting the test target.
All targets have nominal initial values inserted for
range, range-rate, and target power level. I-IPRF targets
have initial range set to 20 miles and range-rate set to
800 knots (closing). LPRF targets have initial range set
to 18 miles, with the DD range scale set to 20 or greater,
or 4.5 miles, with the DD range scale set to 5 or 10.
ORIGINAL 38-48
NAVAIR Of-Fl4AAD-I
Figure 38-32. Continuous Monitor Display
Target power level selection can be entered manually
a&r enabling test-target BIT. A power level is selected
by depressing the pushtile adjacent to TGT LVL and
entering the following keyboard commandsz
Low values of X are correlated with weak target rcturns
and allow for testing the radar% sensitivity. High
values of X are correlated with strong target returns.
38.5.2.1.8 CM Display Format. CM fault detection
is an integral part of the tactical radar display. A
two-character acronym is displayed in the lower left
quadrant of the TID whenever a fault is detected (see
Figure 38-32). This acronym is continually displayed
while the failure condition exists. If multiple failures
occur, khre. ecmnyms will cycle at a 2-second rate.
The RIO can obtain more detailed failure information
byaccessingtheBITmenuontheDD(depressinghfFK
pushtile) and depressing the pushtile adjacent to
MAINT DISP. The RIO can also initiate BIT at any time
to confii that the hardware status is unchanged.
Alistcon&ingthehvo-leneracmnymsthatmayappear
as a result of radar CM 5ilutes is shown in Figure 38-33.
Aircraft anomalies will appear on the TID (lower left
quadrant directly below the radar CM acronyms) whenevera
fault is detected(seeF igure 36-33).A ll acmnyms
(exceptf or MM) appearf or 2 secondsw hencorresponding
equipment is failed. The acronym MM overrides any
previously displayeda cronym for 4 seconds.T he conespondii
acronym is masked when an equipment is
masked through the MFDs.
A list containing the OBCCM acronyms that may
appear as a result of aircraft CM fbilums is shown in
Figure 38-34.
38.5211 TCS Test Format ‘l-be TCS test is an RIOinitiated
test of the TCS and associated switches. It is
initiated by depressingt he DD MFK pushtile to obtain
the radar modes menu, selecting the pushtile adjacent to
BIT to obtaint he BIT submenu,a nd then depressingth e
pushtile adjacent to TCS. TCS testing is interruptible
by a program restart (DD PGM RST pushtile), another
BIT selection, or a radar mode selection.
The TCS test tunction consists of 15 major subtests,
that occur in the following order: TCS on-board checkout,
TCS cursor, manual acquisition, TCS slaved to radar,
TCS return to search, TCS slaved to radar pointing
accuracy test, TCS slaved to computer pointing accuracy
test, automatic search, TCS scan pattern test, independent
mode, radar slaved to TCS, radar slaved to TCS
pointing accuracy test, hand control forward right, hand
control half-action, and TCS slewing test.
ORIGINAL
NAVAIR QI-Fl4AAD-I
CRONYM
BB
BF
CA
CB
cc
CS
CW
cx
DD
DP
DR
ER
FA
HI
HS
MM
ORIGINAL
EQUIPMENT
Computer bus backup enabled (DP
409)
TID buffer overload (DP 283)
Calibration failure (DPs 418-421
426)
Computer bus status word error
(DPs 32, 34, 38, 38)
No sparrow CW channels available
(DP 373)
RDP CPU checksum error (DPs O-3)
CW power failed to turn off or below
acceptable levels (DPs 354, 380)
Data check WMX CPUl, capacitor
voltage error, or data check WMX
CPU2 (DPs 4,10,13)
DD CM function fault (DPs 273,274,
276-280.282,284)
Display power fault (DD, TID, SCU)
(DPs 394,395,396)
DD RAM checksum error (DP 275)
Equipment ready failure (DPs
410-415)
No frequency agility channels
available (DP 374)
Antenna hydraulics on interlock open
(DP 288)
RSP.clock error (DP 51)
Missed missile (AIM-54) message
\CRONYM 1 EQUIPMENT
　
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