ARMY TM 5-6675-308-12
MARINE CORPS TM 08837A-12/1A
(4) Press ENT. System will turn off.
be performed periodically during the survey mission,
but must always be performed prior to initialization
(5) Set PS BATTERY and VEHICLE circuit breakers
and prior to recalling adjusted survey data.
CB1 and CB2 to OFF.
System Initialization. At power on, the CDU in-
c. Accidental Turnoff. In the event the ON/OFF key
dicates GPS C-E. The operator may choose either clear CLR
was accidentally pressed and system turnoff is not
or enter ENT path at this time. The preferred path would be
desired, perform the following:
enter, whether or not GPS data will be used. This will allow
the operator to ensure that the GPS vehicle lever arms have
(1) ON/OFF pressed. Display indicates SAVE C-E.
been entered. If the lever arms have not been entered, the
(2) Press CLR. Display indicates "OFF" C-E.
ATTN status indicator will flash after entry of spheroid, cue-
ing the operator to enter those values. The critical entry of
(3) Press ON/OFF. Display indicates OFF "C-E".
GPS occurs only at the update request.
(4) Press CLR. Display reverts to previous state.
a. Operator selects CLR. The CDU cues the operator for
d. Security Turnoff. If for security reasons the operator
spheroid by flashing "SPH", bypassing all further
does not want to save mission data, perform the
GPS related entries during initialization.
following shutdown sequence:
b. Operator selects ENT. The program requests addi-
tional GPS related data for entry.
(1) Press ON/OFF. Display indicates SAVE C-E.
(1) FOM 1-9 (figure of merit). If the operator has no
(2) Press CLR. Display indicates "OFF" C-E.
receiver, any number 1 through 9 may be entered. If
(3) Press ON/OFF. Display indicates OFF "C-E".
the operator has a receiver, it is recommended that a
receiver mark be made, thus freezing position and
(4) Press ENT. System will turn off. All mark data will
elevation data, and recording the FOM. The fol-
be zeroed.
lowing table defines two unique receiver displays
(5) Set PS BATTERY and VEHICLE circuit breakers
of FOM and the corresponding estimated accura-
CB1 and CB2 to OFF.
cies. Refer to specific GPS receiver operators
manual for proper receiver operation and deter-
Intensity Setting/Lamp Test.
mination of data.
a. Dim. Press and hold LAMP to dim CDU lights. All
FOM
lamps light and the intensity slowly decreases. At full
dark, no further change will occur. Release LAMP
PADS
Receiver Estimated
RCVR RCVR
No. 2
Entry
No. 1
3 Dimensional Accuracy
when desired intensity is reached. The display returns
to normal at the new intensity.
A
1
1
2
B
2
b. Brighten. To brighten the display: press LAMP;
release for 2 to 6 seconds; press and hold LAMP. All
N/A*
3
lamps light and the intensity slowly increases. At full
100 meters
4
N/A*
C
brilliance, ALARM DS3 sounds. Release LAMP
200 meters
D
N/A*
5
when sired intensity is reached. The display returns
500 meters
N/A*
6
to normal at the new intensity.
1000 meters
7
N/A*
Lamp Test. Set display to full brilliance and hold
c.
<5000 meters
N/A*
8
LAMP key. Observe that all status indicators, all
>5000 meters
N/A*
9
data-display segments and all punctuation marks
light; ALARM DS3 sounds, and computer, power
*Not applicable (N/A). Possible error too large. During ini-
supply, and CDU fault indicators DS1 and DS2 turn
tialization, any entry will be accepted. During update, only 1
white. Release LAMP key and note that display
and 2 will be accepted, with a reject of 3 and up.
returns to normal, ALARM DS3 turns off, and fault
indicators DS1 and DS2 turn black. Lamp tests may
(2) After FOM number has been selected, press ENT.
Change 3
3-36.3
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