Trimble R6/R7 GPS and Trimble R8 GNSS Receivers User Guide 29
General Operation 4
Trimble R7 GPS Receiver Operation
4.3 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.
43.1 Logging/memory LED
The yellow Logging/memory LED below the d button indicates the status of data
logging and memory usage.
43.2 SV tracking LED
The red SV tracking LED below the SV icon indicates the status of satellite
tracking.
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.
Behavior Meaning
Slow flash Tracking four or more satellites.
Fast flash Tracking three or fewer satellites.
Off Not tracking any satellites.
On The receiver is in Monitor mode, and is checking for new firmware to
install.
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