Installing the NAE/NIE Technical Bulletin
9
LEDs
The NAE has 11 LEDs to indicate the unit’s power and
communication status. Figure 7 shows the LEDs and Table 4 describes
their meaning.
PO
W
E
R
ET
HERNET
1
0/L
INK
10
0/
LI
N
K
N2
A
N2
B
PE
ER CO
M
RUN
24
V
A
C
BA
TT
F
A
UL
T
GENL
F
A
UL
T
NAEled
N2
-B
N2
-A
PO
W
E
R
+
-
RE
F
S
N2
+
-
RE
F
S
N2
+
NC
-
PO
W
E
R
E
T
HE
RNE
T
10
/L
IN
K
10
0
/L
IN
K
N2
A
N2
B
PE
ER
C
O
M
RUN
24
V
A
C
B
A
TT
F
A
UL
T
GE
N
L
F
A
UL
T
SE
R
IA
L B
SE
R
IA
L
A
US
B
A
US
B
B
ETHERNET
MODEM
SYS
T
E
M
RE
-B
O
O
T
NAE
R
ET SY
Figure 7: Front of NAE
Table 4: NAE LEDs
LED
Normal
Descriptions/Other Conditions
POWER
(GREEN)
On Steady
On Steady = Unit is getting power from either the battery or 24 VAC power. Also
see the 24 VAC LED.
Off Steady = Unit is shut down.
ETHERNET
(GREEN)
Flicker
Flicker = Data is transferring on the Ethernet connection. Ethernet traffic is
general traffic (may not be for the NAE).
Off Steady = No Ethernet traffic, probably indicates a dead Ethernet network or
bad Ethernet connection.
10/LINK
(GREEN)
On Steady
On Steady = Ethernet connection is established at 10 Mb/sec.
100/LINK
(GREEN)
On Steady
On Steady = Ethernet connection is established at 100 Mb/sec.
N2 A
(GREEN)
(NAE Only)
Flicker
Flicker = N2 A port is transmitting or receiving data. Flickers are generally in
synch with data transmission but should not be used to indicate specific
transmission times.
Off Steady = No traffic.
N2 B
(GREEN)
(NAE Only)
Flicker
Flicker = N2 B port is transmitting or receiving data. Flickers are generally in
synch with data transmission but should not be used to indicate specific
transmission times.
Off Steady = No traffic.
PEER COMM
(GREEN)
Varies (see
next
column)
Flicker = Data traffic between NAE devices. For an NAE that is not a Site
Director, this LED indicates regular heartbeat communications with the Site
Director. For a Site Director NAE, flashes are more frequent and indicate
heartbeat communications from all other NAE devices on the site.
Run (GREEN)
On Steady
On Steady = NAE software is running.
On 1 second, Off 1 second = NAE software is in startup mode.
On 0.5 seconds, Off 0.5 seconds = NAE software is shutting down.
Off Steady = Operating system is shutting down or software is not running.
24 VAC
(GREEN)
On Steady
On Steady = 24 VAC power present
Off Steady = Loss of 24 VAC power. In the Off Steady condition, the NAE can be
running on battery power. Also see the POWER LED.
BATT FAULT
(RED)
Off Steady
On Steady = Battery fault. Replace the battery.
GENL FAULT
(RED)
Off Steady
On Steady = General Fault. Fault conditions include excessive Central
Processing Unit (CPU), flash or memory use, or excessive CPU or Printed Wire
Board (PWB) temperature. In normal operation, the GENL FAULT LED stays on
steady for the first half of the startup sequence.
