] 3.4.7 Status LEDs
The TTU-2820™ is equipped with two Status LEDs, one for GPS and one for COMM
(wireless network status). The LEDs use the following blink patterns to indicate service:
LED #1 (Comm LED - Orange) Definitions
Condition
LED 1
Modem Off
Off
Comm On - Searching
Slow Blinking
Network Available
Fast Blinking
Registered but no Inbound Acknowledgement
Alternates from Solid to Fast Blink every
1s
Registered and Received Inbound
Acknowledgement
Solid
LED #2 (GPS LED - Green) Definitions
Condition
LED 2
GPS Off
Off
GPS On Slow Blinking
GPS Time Sync Fast Blinking
GPS Fix
Solid
TTU-2820™ LED Positions
