Javad TRIUMPH-1, Operator'S Manual

Page: 140 / 162

Troubleshooting
Receiver Problems
140
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The receiver is not configured as a Base or Rover.
• 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.

The corresponding receiver options may be disabled or expired.
• See “Managing Receiver Options” on page 84 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 JAVAD GNSS website
for details.
• Refer to the TriVU Software Manual for a detailed description of 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 and Ephemerides” on page 41.
• Check the elevation masks of the Rover and Base receivers; they should be the same. See
“MinPad Configuration” on page 66 for information on setting the elevation mask.

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 your receiver and a computer and start TriVU. See “Connecting the Receiver and
a Computer” on page 37.
2. Click and the Ports tab. Use the same input/output format for both receivers.

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.

.The battery is low.
• Attach an external power source to the receiver.
• See “Powering the Receiver” on page 36 for details.

The transmitting and/or receiving antenna may be improperly connected.
• Check that the radio modem’s antenna is securely and properly connected to the antenna
connector.
• Check that the radio modem’s antenna is undamaged. If damaged, contact your JAVAD
GNSS dealer to replace the antenna.

The specified baud rate is incompatible with the baud rates the receiver supports.