Control Unit LEDs
Each LED on the rear of the Control Unit (CU) indicates a particular condition or status for the device. See the table
below for details about each meaning.
Control Unit's LEDs
Port/LED
Description
CrewNet
LEDs
Left
Green
– CrewNet connection is good.
Off
– No CrewNet connection detected.
Right On (
Green
)
– 1000 Mbps link is detected.
Blinking (
Green
)
– Activity is detected.
Off
– No CrewNet connection detected.
LAN LEDs Left
Blinking (
Green
)
– LAN link is connected.
Green
– No LAN connection detected.
Right Off
– LAN activity is detected.
Amber
– No LAN activity detected.
Sync LEDs Left
Green
– Sync connection is good.
Red
– Sync connection has a problem (e.g., when a CrewNet connection is made to the sync
port of a secondary or tertiary CU).
Off
– No Sync connection detected.
Right On (
Green
)
– 1000 Mbps link is detected.
Off
– No Sync connection detected.
Operation - 45
Summary of Contents for Crewcom CCU-22
Page 1: ...Control Unit OPERATING MANUAL...
Page 2: ...ii...
