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FOC Adjust focus of selected sensor video image.
3. VIDEO AUTO/MAN switches:
SYM INTEN MMS AUTO/MAN
AUTO Reserves polarity of MMS symbology (i.e., white to black or black to
white).
MAN Allows intensity of MMS symbology on MFD to be adjusted
manually.
GAIN AUTO/MAN (TIS only)
AUTO Enables automatic TIS GAIN to operate about a set point selected
on the manual gain switch.
MAN Enables manual TIS GAIN switch to increase (+) or decrease (-) TIS
video contrast.
LEVEL AUTO/MAN (TIS only)
AUTO Initiates a midrange level setting.
MAN Enables manual level switch to increase (+) or decrease (-) video
data brilliance.
FOC AUTO/MAN
AUTO Momentary switch to provide automatic focus adjustment of the
selected image on MFD in narrow field of view only.
MAN Allows manual focus adjustment of selected sensor image on MFD
by FOC switch.
LEVEL AUTO/MAN (TVS only)
AUTO Enables automatic level adjustment for the TVS.
MAN Enables manual level switch to increase or decrease video
brilliance.
Figure 4-1. MMS Control Panel (Sheet 2 of 3)
4-4
TM 1-1520-248-10
(Cont)
CONTROL/INDICATOR FUNCTION
4. Mode selector switch:
OFF Removes electrical power from MMS.
STOW Drives MMS turret to point aft from any position. Stores data
constants and diagnostic data in nonvolatile memory.
PREFLT Displays tests on MFD allowing automatic MMS readiness test and
setup.
OPR
PREPT The MMS LOS is slaved to a target previously selected and stores
in memory. Waypoint numbers are displayed next to PPT key.
FWD The MMS LOS is slaved to a fixed forward position, normally 0°
azimuth, 0° elevation. The LOS can be slewed by the LOS CONT
switch for forward trim, but slew rate is slower than normal.
SRCH The MMS LOS is slaved to scan over present scan limits.
Figure 4-1. MMS Control Panel (Sheet 3 of 3)
4-5
TM 1-1520-248-10
PULL
MAN
PULL
BKUP
BRT
C
ONT
HSD MMS COMM
300 330 N 030 060
VSD
W
05
35
A1652
STBY
N 32° 58.07´
W 14° 16.11´
PREFLT 2X
PWR ON FAIL
0.0
406075-1488-1
J1145
CONTROL/INDICATOR FUNCTION
1. Lubber Line Represents aircraft compass heading.
2. MMS bearing indicator Displays compass bearing of MMS LOS.
3. Azimuth caret and numerals Direction and degree of MMS lateral LOS offset from fuselage
reference.
4. Elevation caret and numerals Direction and degree of MMS vertical LOS offset from fuselage
reference.
5. Prepoint reticle Appears over a preselected target.
6. Target acquisition gate Shows area being used by TVS or TIS to attempt to track a target.
7. HELLFIRE TOF HELLFIRE time of flight. Displayed if HELLFIRE is installed.
8. MMS sensor/turret status block Reports status of MMS turret.
Figure 4-2. Composite CDS and MSP/MMS Multifunction Display Symbology (Sheet 1 of 2)
4-6
TM 1-1520-248-10
(Cont)
CONTROL/INDICATOR FUNCTION
9. Magnification indicator Indicates degree of magnification in TIS only.
10. MMS operational mode status Indicates present function of MMS selected by MMS mode select
block switch or TRK switches.
11. Present position block Continuously updated report of helicopter current position.
12. NFOV limit TIS Indicates the edge of field of view when placed in NFOV mode.
13. NFOV limit TVS Indicates the edge of field of view when placed in NFOV mode.
14. Laser hit point reticle Selects and permits LOS to be directed to an offset and represents
laser hit point when joined with LOS reticle.
15. Trackable target (lock on) gate Appears around designated target and indicates MMS and LOS lock
on.
16. Laser status block Upper portion displays selected laser code. Lower position displays
laser system status (STBY/ARM).
17. LOS reticle Represents LOS of MMS optics and laser hit point.
Figure 4-2. Composite CDS and MSP/MMS Multifunction Display Symbology (Sheet 2 of 2)
4-7
TM 1-1520-248-10
PULL
MAN
PULL
BKUP
BRT
C
ONT
HSD MMS COMM
300 330 N 030 060 E
VSD
W
05
35
A1652
STBY
N 32° 58.07´
W 14° 16.11´
PREFLT
PWR ON FAIL
LOS reticle in Manual Track LOS reticle in Area Track
*LOS reticle in all modes except Area Track and Manual Track.
406075-1488-3
J1431
2X
Figure 4-3. Composite CDS and IMSP/MMS Multifunction Display Symbology (Sheet 1 of 2)
4-8
TM 1-1520-248-10
CONTROL/INDICATOR FUNCTION
1. Lubber Line Represents aircraft compass heading.
2. MMS bearing indicator Displays compass bearing of MMS LOS.
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TECHNICAL MANUAL OPERATOR’S MANUAL FOR ARMY OH-58D HELICOPT(92)
