_________________________________________________________ Appendix A LED Status Indicators
AsteRx3 Product Family Hardware Manual v2.5.0
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Appendix A
LED Status Indicators
LEDs (Light Emitting Diodes) report the status of key processes inside the receiver. On OEM boards,
these LEDs are not present but output pins are reserved to drive external LEDs (max drive current
8mA).
It is assumed that the LED lights when the electrical level of the corresponding pin is high.
LED Name
LED Behaviour
POWERLED
LED lights when the receiver is switched on.
LOGLED
LED lights when data is being written to the internal SD memory card. If the
logging rate is larger than 1 Hz, LED lights continuously.
PVTLED
LED lights when a PVT solution is available.
GPLED
General-purpose LED. The function of this LED is configured with the
setLEDMode
command. By default, this LED has the DIFFCORLED
function (see below).
DIFFCORLED
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).
LED behaviour
Number of satellites with corrections
LED is off
No differential correction message received
blinks fast and
continuously (10 times per
second)
0
blinks once, then pauses
1, 2
blinks twice, then pauses
3, 4
blinks 3 times, then
pauses
5, 6
blinks 4 times, then
pauses
7, 8
blinks 5 times, then
pauses
9 or more
The LED is solid ’ON’ when the receiver is outputting differential corrections
as a static base station.
TRACKLED
LED behaviour
Number of satellites in tracking
blinks fast and
continuously (10 times per
second)
0
blinks once, then pauses
1, 2
blinks twice, then pauses
3, 4
blinks 3 times, then
pauses
5, 6
blinks 4 times, then
pauses
7, 8
blinks 5 times, then
pauses
9 or more