User's Manual
Table Of Contents
- USER GUIDE
- Legal Notices
- Safety Information
- Contents
- Introduction
- Features and Functions
- Batteries and Power
- Setup Guidelines
- Setting up the Receiver
- Configuring the Receiver Settings
- Using the SCS900 Site Controller software to configure the base station, the rover, and the radios
- Configuring the receiver to log data for postprocessing
- Configuring the receiver in real time
- Configuring the receiver using application files
- Creating and editing the configuration files that control the receiver
- AutoBase Feature
- Default Settings
- Specifications
- NMEA-0183 Output
- GSOF Messages
- Adding Internal Radio Frequencies
- Upgrading the Receiver Firmware
- Data Logging and Postprocessed Measurement Operations
- Troubleshooting
- Glossary
F Troubleshooting
114 SPSx80 Smart GPS Antenna User Guide
LED conditions
The SPS770 GPS receiver and SPSx80 Smart GPS antenna have a simple display panel
with LEDs to indicate the current status of the receiver. If you need more detailed
information about what the receiver is doing, use a Trimble controller or laptop
computer running the SCS900, GPS Configurator, or Configuration Toolbox software.
The following section describes how the LED lights are used on the receiver to indicate
current status. An LED that is flashing quickly indicates a condition that may require
attention, and an unlit LED indicates that no operation is occurring. This section
describes some LED conditions, possible causes, and how to solve them.
Receiver issues
This section describes some possible receiver issues, possible causes, and how to solve
them.
Condition Possible cause Solution
The SV Tracking LED is
lit solidly and the
Logging/Memory LED is
flashing slowly.
The receiver is in Monitor
mode, ready for new
firmware to be loaded or
new options to be added.
Turn on or turn off the receiver.
Load the latest version of the
firmware, which you can download
from the Trimble website
(
www.trimble.com/sps770.shtml or
www.trimble.com/sps780.shtml /
Support / Downloads).
The SV Tracking LED is
not flashing.
The receiver is tracking fewer
than four satellites. (SPS770
and SPS780 Smart GPS
antenna only)
Wait until the SV Tracking LED is
flashing slowly.
The radio antenna cable and
GPS antenna cable are mixed
up. (SPS770 only)
Make sure that the GPS antenna
cable (with the yellow over-mould) is
connected between the yellow TNC
connector marked GPS and the GPS
antenna.
Issue Possible cause Solution
The receiver does not
turn on.
External power is too low. Check the charge on the external
battery, and check the fuse if
applicable. If necessary, replace the
battery.
Internal power is too low. • Check the charge on the internal
batteries and replace if
necessary.
• Ensure battery contacts are
clean.
External power is not properly
connected.
• Check that the Lemo connection
is seated properly.
• Check for broken or bent pins in
the connector.