User's Manual

Troubleshooting
HiPer Ga/Gb Operator’s Manual
6-6
1. Connect your receiver and a computer using a free port
(see “Connecting the Receiver and a Computer,” on
page 2-14) and start PC-CDU.
2. Click ConfigurationReceiverPorts.
3. Change the Input for the port used for connection to
“Command.”
The receiver does not lock on to satellites for a long period of
time
 The receiver stores an old almanac.
Update the almanac. See “Collecting Almanacs and
Ephemerides,” on page 2-21 for details.
 The corresponding receiver options may be disabled or expired
(L1/L2, GPS/GLONASS must be on to track satellites).
• See “Managing Receiver Options,” on page 5-10 for details
on how to check current options.
• Order a new OAF with the desired options activated to
enable or extend validity of the corresponding receiver
options. Contact your dealer or visit the TPS website at
www.topconpositioning.com for details
• Refer to the PC-CDU Reference Manual for a detailed
description of options.
The receiver tracks too few satellites
 The elevation mask value is too high (above 15 degrees).
Lower the elevation mask. See “MINTER Configuration,” on
page 3-17 for information on setting the elevation mask.
 The survey is conducted near obstructions (tree canopy, tall
buildings, and so forth).
• Make sure the Multipath Reduction boxes are enabled.
1. Connect your receiver and a computer, and start
PC-CDU. See “Connecting the Receiver and a
Computer,” on page 2-14.