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TM 1-1520-248-10
PULL
MAN
PULL
BKUP
BRT
C
ONT
VSD HSD MMS COMM
NAV ALIGN
ENGINE MONITOR
SCAS CHECK
HIT CHECK
NOTEBOOK
MAST TRQ TEST
FDL MENU
PAGE 2 2
3
4
MISSION
00:00:28
5
1
INITIAL PAGE 1
R FADEC MONITOR
RADALT TEST
HOG
ON OFF
(CDS4)
(CPG MFD ONLY)
(CDS4)
406075-1612
J2995
TAIL NO 94-00158
CONTROL/INDICATOR FUNCTION
1. Clock timer key Calls up CLOCK TIMER page. Selected source (ZULU, MISSION, LOCAL,
or TIMER1) is displayed above time data.
2. PAGE 2 key Calls up INITIAL PAGE 2.
3. HSD key Calls up Horizontal Situation Display (HSD) page.
4. NOTEBOOK key Calls up NOTEBOOK page if data transfer module/map data unit (DTM/
MDU) is installed.
5. NAV ALIGN key Calls up navigation system alignment (NAV ALIGN) page.
Figure 3-25. INITIAL PAGE 1
3-48
TM 1-1520-248-10
PULL
MAN
PULL
BKUP
BRT
C
ONT
VSD HSD MMS COMM
NAV ALIGN
406075-609
J0320
DATUM 25
ELEV 673 M
AUTO / MANUAL
FAST
UTM LAT/LONG
8
7
6
5
2
1
3
4
MAG HDG 135
POS 14S-AB-2121-3791
SHIP ALGN
CONTROL/INDICATOR FUNCTION
1. AUTO/MANUAL key Activates a manually initiated, 4-minute alignment. “AUTO” is boxed during
normal system start-up.
2. FAST key Activates fast align mode using stored heading from last mission or defaults
to standard 4-minute alignment.
3. SHIP ALGN key Activates shipboard alignment based on ships magnetic heading.
4. UTM LAT/LONG key Toggles between UTM and LAT/LONG with the active mode boxed. When
changing between UTM and LAT/LONG, inaccurate navigation data may be
displayed. To correct problem, verify the correct DATUM entry was made on
NAV ALIGN page. If problem still exists, from HSD page cycle NEXT WPT/
LAST WPT.
5. ELEV key Activates keyboard to accept entry of elevation of present position in meters.
Elevation in feet may be entered by entering an F after the elevation.
Figure 3-26. (CDS2) NAV ALIGN Page-UTM (Sheet 1 of 2)
3-49
TM 1-1520-248-10
(Cont)
CONTROL/INDICATOR FUNCTION
6. DATUM key Activates keyboard to accept entry of local map datum code, or datum last
entered will be displayed. These datums are located in the legend area at
the bottom of tactical maps. Refer to Table 3-3 for world datum locations.
7. MAG HDG key Activates keyboard to accept entry of ships magnetic heading in degrees.
8. POS key Activates keyboard to accept entry of present position coordinates. A WPT/
TGT ID may be entered in lieu of position data. The WPT/TGT position data
will automatically be used. NAV ALIGN data from the DTS will also be used
during mission loading.
Figure 3-26. (CDS2) NAV ALIGN Page-UTM (Sheet 2 of 2)
3-50
TM 1-1520-248-10
PULL
MAN
PULL
BKUP
BRT
C
ONT
VSD HSD MMS COMM
NAV ALIGN
ELEV 673 M
AUTO / MANUAL
FAST
UTM LAT/LONG
2
1
MAG HDG 135 3
POS 14S-AB-2121-3791
4
6 5
7
8
9
NAV
MODE
GPS/INS
DATUM 25
SPHEROID CL6
GC ALIGN
SHIP ALGN
406075-1525-2
J2995
GPS SAT DATA
SATS 4 CLR
IFA GO /NOGO
SA /AS
KEY VERIFIED 3
(CDS4) 10
CONTROL/INDICATOR FUNCTION
1. AUTO/MANUAL key Activates a manually initiated, 4-minute alignment. “AUTO” is boxed during
normal system start-up.
2. FAST key Activates fast align mode using stored heading from last mission or defaults
to standard 4-minute alignment.
3. NAV MODE key Calls up NAV MODE SELECT page to allow for the change of the EGI mode
of operation. Displays currently selected mode (GPS/INS, GPS, INS, TAC
HSI, or TAC MAP).
4. SHIP ALGN key Activates shipboard alignment based on ships magnetic heading.
5. UTM LAT/LONG key Toggles between UTM and LAT/LONG with the active mode boxed. When
changing between UTM and LAT/LONG, inaccurate navigation data may be
displayed. To correct problem, verify the correct DATUM entry was made on
NAV ALIGN page. If problem still exists, from HSD page cycle NEXT WPT/
LAST WPT.
Figure 3-27. NAV ALIGN Page-UTM (Sheet 1 of 3)
3-51
TM 1-1520-248-10
(Cont)
CONTROL/INDICATOR FUNCTION
6. DATUM/SPHEROID key Activates keyboard to accept entry of local map datum code, or datum last
entered will be displayed. These datums are located in the legend area at
the bottom of tactical maps. Refer to Table 3-2 for world datum locations.
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TECHNICAL MANUAL OPERATOR’S MANUAL FOR ARMY OH-58D HELICOPT(66)
