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cycle may be lost if MMS is powered off when invalid store message displays.
LASER FAIL MMS BIT has detected a failure in the laser rangefinder. An MMS diagnostics
should be performed before further use of the laser.
LSR ENERGY LOW Laser output energy is sensed to be low.
LSR HOT Laser has been shut down. May be overridden, if necessary, but damage to laser
may occur.
LSR HOT WRN High temperature in laser and system may shut down. Continued laser firing and/
or placing laser in temperature override may damage laser.
LSR INHBT Laser is inhibited from firing. MMS LOS is in line with tail rotor area.
MMS FAIL MMS BIT has detected line replaceable units (LRU) failure in one or more BIT
tests. To determine if there has been an MMS failure, an MMS diagnostics should
be performed.
NAV UPD FAIL NAV UPDATE perceived error is so large that EGI will not accept update without
confirmation.
PWR ON FAIL MMS has failed a portion of the power on diagnostics. An additional message will
be alternately displayed identifying the failed LRU.
REBORESIGHT Displays whenever power is applied to MMS. Displays when one of the sensors
(TVS, TIS) has experienced a temperature change which is great enough to
require an AUTO BRST.
STORE COMPLETE Displays whenever MMS has completed its STOW process. The MMS may now be
powered down.
TAMS FAIL Transmission attitude measurement system (TAMS) failure; except MMS pointing
errors. Perform TAMS system BIT from BIT page to determine failed components.
4-12
TM 1-1520-248-10
TABLE 4-1. MMS ADVISORIES (Cont)
ADVISORY MEANING
TGT LOC FAIL Range data from one laser pulse to another is not consistent and will not be
accepted.
TIS FAIL MMS BIT has detected a failure in the TIS LRU. An MMS diagnostics should be
performed to determine if the TIS has failed.
TIS FREEZE* Operator has selected frame freeze. Deselect, as desired, by using frame freeze
switch on CPG cyclic.
TIS HOT TIS detectors are not cooled down to operating temperature. TIS takes 10  15
minutes to cool down.
TRACKER FAIL MMS BIT has detected a video tracker subsystem (VTS) failure in MSP or a
sensor processor subsystem (SPS) failure in IMSP. MMS diagnostics should be
performed.
TURRET FAIL MMS BIT has detected a turret or upper shroud failure. AN MMS diagnostics
should be performed to determine if the mast turret assembly has failed.
TV FAIL MMS BIT has detected a failure in the TVS. An MMS diagnostics should be
performed to determine if TVS has failed.
VPS FAIL** MMS BIT has detected a failure in the video processor subsystem (VPS). MMS
diagnostics should be performed.
WEDGE CONST ZERO Default values are being used for MMS data constants. Maintenance assistance is
needed to load accurate data.
RNG MODE** LASER mode is RNG and DESIG switch is activated for TARGET LOCATE or
OFFSET NAV UPDATE mode.
NOTE
MMS failure status words will sometimes display without a true component failure.
Some of these failures can be activated by improper preflight or STOW procedures
of the MMS. Follow correct preflight and stow procedures for the MMS to minimize
false failures.
*MSP/MMS configuration only.
**IMSP/MMS configuration only.
4-13
TM 1-1520-248-10
CONTROL/INDICATOR FUNCTION
MMS FXD FWD switch Selects and deselects override of all CPG directional commands to MMS.
Slews MMS LOS to fixed forward position (typically 0° azimuth, 0°
elevation) and selects TIS, white hot and wide field of view.
Figure 4-5. Pilot Cyclic Grip Controls
4-14
TM 1-1520-248-10
ON
OFF
WPN ATHS MMS
ASE INIT
ALE
ON
LMC
ON
TIS INTEG
INCR
FILTER
ALL
ALFGL
OFF OFF OFF
ON
406075-598
H0847
CONTROL/INDICATOR FUNCTION
ALFGL Allows operator to see more detail in scenes with high variation in
temperature.
WPN/ASE UP:
1st Toggle  WEAPONS PAGE.
2nd Toggle  CPG left VSD Sparse page.
3rd Toggle  CPG right VSD Sparse page.
DOWN:
Aircraft Survivability Equipment page.
If any other page is displayed on CPG’s MFD and the WPN/ASE switch is
activated, the CPG’s WEAPONS PAGE will be displayed.
Figure 4-6. (CDS2) CPG Auxiliary Panel (Typical) (Sheet 1 of 2)
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TM 1-1520-248-10
(Cont)
CONTROL/INDICATOR FUNCTION
ATHS/INIT Up position displays Airborne Target Handover Top page on MFD.
Down position displays INITIAL PAGE on MFD.
MMS FILTER ALL Not used.
NOTE
The higher the TIS increment the more the scene will blur with motion.
TIS INTEG Initiates integration function which permits several frames produced by the
　
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