The signal lights on the Cab Hub are identical to the signal lights on any other Remote Hub.
The bottom light is the power light, so it should be on any time the Cab Hub is connected to power.
The next light up (Ethernet traffic - green) will be off if nothing is attached to the LAN port, or blinking if something is attached. The next four lights (red, yellow, green, green from bottom to top) indicate the signal strength, and at least the red light should be on.
- If no lights are showing, make sure the light on the power supply is on. If it's not, the power supply is probably dead. Check the light on the power supply - it should shine brightly and constantly, not be dim or pulsing.
- If the power light is on but the red signal light is not, or if the signal lights are flashing "back and forth" (top two lights, then bottom two lights, then back), the Hub is not connecting to the network. Either the Hub has not been properly initialized (by attaching it to an Internet-connected router until the top light comes on and stays on) or the Hub is completely out of range of the nearest Hub (improve the line-of-sight to the next Hub)
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