7 Troubleshooting intheField
7.6.4 SNM940 cellular radio status indicators
The SNM940 has two LED indicators on the front face as shown in the image
below. The green LED (1) shows power and GNSS status. The amber LED (2)
shows the wireless communications status.
The LEDs indicate the device status as described in the following table:
SNM940 status Green LED Amber LED
Powered and Initializing On solid Off
GNSS providing a position Blink N/A
No GNSS signal or poor position quality Fast blink N/A
Cellular data connection N/A On solid
WLAN (Wireless Local Area Network)
data connection
N/A Blink
WLAN and cellular connection N/A Slow blink
Poor or no wireless connection N/A Fast blink
Low power standby Off Off
Blink rates:
l Slow blink – 3 seconds on / 3 seconds off
l Blink – 1 second on / 1 second off
l Fast blink – 200 milliseconds on / 200 milliseconds off
182 GCS900 GradeControl System for Excavators Operator's Manual
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