Ethernet Leds - Sierra Wireless AirLink ES440 Hardware User's Manual

AirLink ES440 Hardware User Guide
Table 2-2: LED Operation
Color
Off
Solid Green
Flashing Green
(1.0 sec. on / 0.5 sec. off)
Flashing:
Yellow (0.5 sec.) /
Green (0.5 sec. ) /
Off (0.5 sec.)
Flashing Yellow
(0.8 sec. on / 0.8 sec. off)
Solid Yellow
Flashing Red
(0.7 s on / 2.3 s. off)
Solid Red
22
Network LED
—
Network Ready
Network Ready—Roaming
Network Ready—Roaming
(No LTE service)
No Service
Connecting to the network
Authentication/Negotiation
failed
Link Down
No cellular network is
present or the ES440 is in
radio passthru mode

Ethernet LEDs

There are four LEDs on the front panel, labeled:
• Network
• Signal
• Activity
• Power
The Ethernet port has two LEDs that indicate speed and activity. When looking
into the connector:
• Activity— The right LED is solid yellow when a link is detected (the cable is
plugged in) and blinks when there is activity.
• Connection Speed—The left LED is green to indicate a 100 Mbps connection
and orange to indicate a 10 Mbps connection. It is off when no cable is
connected.
Signal LED Activity LED
— Normal operation
Good signal
≥
(RSSI -85 dBm)
— Radio is
transmitting or
receiving
—
—
Marginal signal
(-100 dBm < RSSI
< -85 dBm)
No signal
≤
(RSSI -110 dBm)
Poor signal
(-110 dBm < RSSI
<
-100 dBm)
Power LED
No power or
≥
input voltage
≤
36VDC or
9VDC
— ES440 is
connected to
nominal power
and is operating
normally
—
— —
— —
— ES440 entering
low power mode
or system low
level boot
— —
— ES440 not
operational
(failure or in low
power mode)
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