Topcon GR-5 - Page 164

Troubleshooting
GR-5 Operator’s Manual
6-6
• If the receiver should function as a Base, ensure it has the
proper configuration. See Chapter 3 for details.
• If the receiver should function as a Rover, ensure it has the
proper configuration. See Chapter 3 for details.
D The corresponding receiver options may be disabled or expired.
• See “Managing Receiver Options” on page 5-11 for details
on how to check current options.
• Order a new OAF with the required options activated to
enable or extend validity of the corresponding receiver
options. Contact a dealer or visit the TPS website for
details
• Refer to the PC-CDU Reference Manual for a detailed
description of options.
D 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
and Ephemerides” on page 2-27.
• Check the elevation masks of the Rover and Base receivers;
they should be the same. See page 3-19 for information on
setting the elevation mask.
D A discrepancy exists between the differential standards used at
the Base and Rover receivers.
Ensure the Base and Rover receivers use the same corrections
input/output format:
1. Connect the receiver and a computer and start PC-CDU.
See “Connecting the Receiver and a Computer” on
page 2-21.
2. Click ConfigurationReceiver and the Ports tab. Use
the same input/output format for both receivers.
D Poor satellite geometry (PDOP/GDOP values are too high).
Conduct a survey when PDOP values are low.