User's Manual

Table Of Contents
G Troubleshooting
124 SPSx80 and SPSx81 Smart GPS Antennas User Guide
LED conditions
The Smart GPS antenna has 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/sps780.shtml /
Support / Downloads).
The SV Tracking LED is
not flashing.
The receiver is tracking fewer
than four satellites.
Wait until the SV Tracking LED is
flashing slowly.
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.