Topcon HiPer Plus, Operator'S Manual, Page: 146 / 184

Troubleshooting
Topcon HiPer+ Operator’s Manual
5-6
The corresponding
receiver options may
be disabled or expired. • See “Checking an OAF” on
page 4-14 for details on how to
check current options.
• Enable the corresponding receiver
options.
• Contact your dealer to purchase
current receiver options.
There are not enough
common satellites. In
order to obtain a fixed
solution, the Base and
Rover should track at
least five common
satellites. • Ensure that both the Rover and Base
receivers use the same, and updated,
almanac. See “Collecting Almanacs”
on page 2-49.
• Check the elevation masks of the
Rover and Base receivers; they
should be the same. See page 2-25
for information on setting the
elevation mask.
Poor satellite geometry
(PDOP/GDOP values
are too high). Conduct your survey when PDOP
values are low.
The elevation mask is
above 15 degrees. • Lower the elevation mask.
• See page 2-25 for information on
setting the elevation mask.
The receiver and the
antenna have a poor
connection. • Ensure the cable is undamaged.
• Check the cable connector
attachment to the receiver. Remove
and reattach the cable connector to
ensure a secure connection.
The Base and Rover
modems are set to
different radio
channels. • Set the Base and Rover receivers to
the same radio channel.
• See “Radio Configuration” on
page 2-30.