User Manual

3 General Operation
50 5700/5800 GPS Receiver User Guide
5700 Operation
3.3 LED Behavior
The five LEDs on the top panel of the receiver indicate various
operating conditions. Generally, a lit or slowly flashing LED indicates
normal operation, an LED that is flashing quickly indicates a
condition that may require attention, and an unlit LED indicates that
no operation is occurring. The following table defines each possible
LED state.
3.3.1 Logging/Memory LED
The yellow Logging/Memory LED below the  button indicates the
status of data logging and memory usage.
The term … means that the LED …
Flash is lit briefly every 3 seconds
Slow flash alternates slowly between being lit and unlit
Fast flash alternates rapidly between being lit and unlit
On is lit
Off is unlit
Behavior Meaning
On Data is being logged.
Slow flash Enough FastStatic data has been logged. Alternatively, if
the red SV Tracking LED is on solid at the same time, the
receiver is in Monitor mode, and is checking for new
firmware to install.
Fast flash Data is being logged but memory is low.
Flash The receiver is in Sleep mode, and will wake up five
minutes before the scheduled start time of a timed
application file.
Off Data is not being logged, or the CompactFlash card is
full.