ARMY TM 5 6675-308-12
MARINE CORPS TM 08837A12/1A
ID, 4, 6, ENT, MON, 5, 0, ENT. The CDU
operator has 30 seconds to stop the vehicle and press STOP.
If he does not, the GO indicator extinguishes, STOP
display will display 5.0 as the Z-VEL interval
indicator continues to flash, ALARM DS3 sounds steadily,
and will remain this value throughout this and
and data display reads STOP. Press TIME to disable
subsequent missions until reset in the same
ALARM DS3 for 30 seconds. The sequence of operations
manner. To change Z-VEL back to 10 minutes
is:
press MON, ID, 4, 6, ENT, MON 1, 0, 0, ENT.
This can be performed at any time during the
STATUS
mission.
OPERATION
INDICATOR
e. The ATTN indicator lights if system errors are too
large during a zero-velocity correction. This can be caused
(1) Stop vehicle and set
"STOP" "GO", or
by: pressing STOP while vehicle is moving; not stopping
brake.
"STOP"
when requested; or a PADS malfunction. Make sure the
(2) Press STOP.
Stop
vehicle is stopped; press and hold STOP to override the
ATTN indicator. Release STOP when ATTN indicator
(3) After a few seconds.
Z-VEL
extinguishes and STOP indicator lights. Troubleshoot in
(4) C o r r e c t i o n c o m p l e t e d .
"GO"
accordance with table 42 for repeated failure indications
(5) Vehicle moves.
not induced by the operator.
c. If the vehicle moves before a zero-velocity
NOTE
correction is completed, the time automatically reverts back
to the prior zero-velocity countdown time.
An update may be cancelled any time before
d. In order to obtain the PADS specified accuracies
completion by pressing UPDT a second time. A
for battalion survey, the operator must perform 10-minute
completed update cannot be eliminated.
zero-velocity corrections. For division artillery survey, the
P o s i t i o n and elevation updates may be
operator must perform 5minute zero velocity corrections.
performed independently.
a. Inserting accurate position and/or elevation data
into PADS is called updating. All updates are performed
over known survey control points. PADS must he updated
Do not set the ZVEL interval to exceed 10
after initialization before it can provide accurate survey
minutes as PADS accuracies will degrade.
data. The first update after initialization is called the initial
update. The survey mission starts after the initial update. It
NOTE
is essential to update PADS at the end of a survey mission.
The ZVEL interval may be changed by the
At the end of an update, PADS automatically adjusts all data
operator, i.e. if a 5minute interval is required
recorded since the previous update. The adjusted data
for the fourth order survey, the operator should
replaces the unadjusted data stored in the systems computer.
perform the following sequence: Press MON,
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