Trimble GCS900 - GNSS receiver status indicators

7 Troubleshooting intheField
7.6.2 GNSS receiver status indicators
The MS9xx GNSS receivers have three LEDs next to the harness connector. The
behavior of these LEDs indicate the status of the receiver, as shown in the
following figure.
1
Power
2
Data link
3
Satellite
Figure 7.2 MS9xx status LEDs
The meaning of the receiver status LED activity is shown below:
LED Off Slow flash Flash Fast flash On solid
Power No power Beta test period
expired
1
Power on
Data
link
No CMR™ data
received or too
few satellites
CMR data
type0 being
processed
10Hz CMR data
being
processed
Satellite No satellites
being tracked
Tracking four
satellites or
more
Tracking three
satellites or
less
Monitor mode
2
1
In addition to the power LED, the data link and satellite LEDs will also flash, and at the same rate as the
power LED.
2
In addition to the satellite LED, the power LED will also be on solid, and the data link LED will flash.
When GNSS is working correctly in a single-GNSS system, you will see the
following activity:
l The power LED will be on solid.
l The data link LED will flash at 1Hz.
l The satellite LED will flash slowly.
180 GCS900 GradeControl System for Excavators Operator's Manual