LED Status Indicators
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Appendix A LED Status Indicators
The LED pins can be used to monitor the receiver status. They can be used to drive
external LEDs (max drive current 10mA). It is assumed that the LED lights when the
electrical level of the corresponding pin is high.
The general-purpose LED (GPLED pin) is configured with the setLEDMode command.
The following modes are supported. The default mode is “PVTLED”.
LED lights when a PVT solution is available.
Differential correction indicator. In rover PVT mode, this LED reports
the number of satellites for which differential corrections have been
provided in the last received differential correction message (RTCM
or CMR).
Number of satellites with corrections
No differential correction message received
blinks fast and
continuously (10 times per
second)
blinks twice, then pauses
blinks 3 times, then pauses
blinks 4 times, then pauses
blinks 5 times, then pauses
The LED is solid ’ON’ when the receiver is outputting differential
corrections as a static base station.
Number of satellites in tracking
blinks fast and
continuously (10 times per
second)
blinks twice, then pauses
blinks 3 times, then pauses
blinks 4 times, then pauses
blinks 5 times, then pauses