Ag Leader PF3000Pro Harvest & Application Operators Manual - Manual (Page 260)

Troubleshooting PF3000 Pro
All Modes Ag Leader Technology
July 2003 6-18
Problem Cause Solution
Differential correction
fades in and out
•
A strong
thunderstorm or
disturbance is near or
located between
antenna and
differential source.
•
You are in a fringe
area for reception.
•
Interference from
your vehicle or
machinery.
•
The thunderstorm must pass or decrease in
intensity.
•
Determine if there are thunderstorms in the
vicinity or call Ag Leader Technology to see
whether the beacon near you is operational.
•
Move the antenna to a position where it is not as
strongly affected by the interference.
The GPS will not stay
locked on a beacon and
switches erratically back
and forth from one
beacon to another.
•
Either one or more
of the beacons has an
unhealthy or
unmonitored status or
there is a large
amount of
interference in the
signal from a certain
beacon.
•
Press the Menu key until SETUP is displayed.
Press SETUP key. GPS is displayed. Press GPS
key. Scroll down to Beacon Mode, the user has
two options (See Beacon Selection in General
Information section):
•
Select Auto power
•
Select Manual mode. Manual mode is the best
choice in this case if the user has a beacon that
they know is providing a good signal.
•
Press the EXIT key. The display returns to the
startup screen and within about one minute or less
the unit will lock on to the selected frequency.
When the GPS is used on
a vehicle, such as a truck
or car, the SNR for the
beacon being used is
very low or the unit
cannot lock on a
differential correction.
•
Electrical noise
generated by the
vehicles electrical
system.
•
Move the antenna to a location that is not
affected.
•
Use a line filter on main power to unit.
Antenna voltage
indicates 5 volts or more.
•
Loose connection.
•
Antenna is
malfunctioning.
•
Check bulkhead connection.
•
Check antenna connections.