PS Magazine - TB 43-PS-565

PS, The Preventative Maintenance Monthly

ISSUE 565

DECEMBER 1999
PS Magazine - TB 43-PS-565 - Page 26 of 34
Global Positioning System . . .
When the PLGR doesn’t shut down,
a software filter doesn’t reset, and prior
data is used to calculate your position.
To kill the glitch, get your PLGR
reprogrammed. You can do that your-
self if you still have the hardware, the
reprogramming cable and the AC
power adapter, provided in the PLGR
field reprogramming kit issued in 1997,
and if you have Internet access.
?
you
go that
a-way
!
no, that
a-way
!
here’s a glitch in the software of
the AN/PSN-11 precision lightweight
global positioning system receiver
(PLGR) that could lead you way off
course.
That glitch lets the PLGR display a
large position error with no indication
in the
figure
of merit
(FOM)
that the
position
is wrong.
The
glitch
mostly rears its ugly head when a
PLGR, using external power, has been
in continuous mode for more than two
hours.
The problem is a recycling one. A
PLGR on battery power usually re-
cycles—shuts down—and goes into
STANDBY mode. This breaks up long
periods of use. This shutdown doesn’t
happen when using external power.
Check FOM readout
PLGR AC power adapter
PLGR reprogramming cable
If you’re in the National Guard or
Army Reserve and don’t have a LAR
or MWO coordinator nearby, contact
CECOM at DSN 992-6136 or (732)
532-6136 or DSN 992-6133 or (732)
532-6133.
Some PLGRs already have the new
software. Check yours. If the screen
reads 613-9854-003 or 613-9544-008
when you power up, your PLGR is
good to go.
If your PLGR hasn’t been modified
and you run it on external power for
hours at a time, manually reset the
PLGR every two hours until you get
the MWO applied.
the needed software from CECOM and
will help you apply MWO 11-5825-
291-30-3.
They may also tell you that your unit
is scheduled for a visit from a field
reprogramming assistance team. These
teams are making the rounds to areas
with a lot of PLGRs to help with the
reprogramming effort.
You can check the reprogramming
schedule for these teams on the Internet
at:
http://army-gps.robins.af.mil/rpg
Go to Internet site:
Click on
Order or Download Battle-
field Software.
Then click on
AN/PSN-1
1. Down-
load the
PLGR Reprogramming Soft-
ware.
If you didn’t get the reprogramming
kit, or no longer have it, contact your
installation MWO coordinator or LAR.
They’ll get the reprogramming kit and
PS 565
45
DEC 99
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