AgGPS 252 Receiver User Guide 51
Troubleshooting Flowcharts
Figure 6.5 Using AgRemote to troubleshoot RTK

START HERE

Check that there are
no other base stations
operating in the area,
interfering with your
base station signal.
Check the AgRemote Home
screen for GPS reception. Is
the receiver tracking at least 4
satellites?
See the GPS Reception
Troubleshooting Guide.
When GPS satellite
reception is resolved, return
to this guide.
Move the roving receiver to a
place where there is a clear
line of sight between it and
the base station. Are RTK
corrections being received
now? Does the AgRemote
screen display r or R?
No
Check the power supply to
the base station and the base
radio. Is the base transmit
light on?
Provide power to the
base station and radio.
Check that the receiver is
initialized. Does the
AgRemote Home screen
display R for a fixed
solution?
Are 5 or more satellites
being tracked? Yes
Move the receiver away from
any obstructions so that it
can track at least 5 satellites.
Receiver is operating
normally.
Receiver should initialize
soon (wthin 30 seconds for
baselines under 5 km). After
30 seconds does the Home
screen display R for a fixed
solution?
Something may be interfering
with the GPS signal. See the
GPS Reception Trouble-
Shooting Guide. Is the
problem still unresolved?
Continue
No
Yes
Check that the receiver is
receiving RTK corrections.
The age on Home screen
should be 1 if receiving
radio. Does the AgRemote
Home screen display r or R
for an RTK solution?
No
No
No
Yes
No
No
Yes
Check the Rover receiver
light to ensure RTK
corrections are present. Is the
LED flashing yellow?
No
No CMR corrections are being
received. In the Config screens
use RTK link to make sure that
the rover radio parameters are
the same as the base radio
parameters. Are CMR
corrections being recieved now?
Yes
No
Yes
Check the AgRemote screen
for RTK status and contact
your local Trimble Reseller.
Yes
Receiver is operating
normally.
Yes
Is the RTK option installed in
the receiver?
Yes
No Obtain and install the RTK
option
Yes
Yes

Ag252_100B_UserGuide_ENG.book Page 51 Thursday, July 28, 2005 4:06 PM