NX-591E
6
VIII. UNDERSTANDING THE LIGHTS
The module has 14 green LEDs along the back of the board. These LEDs provide valuable
information about the status of the module as shown in the following table.
Table VIII-1
LED
DESCRIPTION
DS3 – DS6 LEDs flashing = Network failure
DS3 – DS6 LEDs off = Normal idle condition
(DS3 & DS4) (DS5 & DS6) Flashing alternately = Shutdown
DS1
Indicates proper circuitry operation
DS3
ON steady = Reading MINs from cellemetry radio
DS4
ON steady = Looking for cellular service
DS5
ON steady = Sending a network verification message packet to tower
Flashing = Waiting for acknowledgement
DS6
ON = Sending data message to tower
Flashing = Waiting for acknowledgement
XMIT
Message packet being transmitted to tower
POOR
FAIR
GOOD
BEST
The LEDs will either be Off, On, Flashing slow, or Flashing Fast depending on
the dB of the signal. Refer to Table VIII-2 for details.
SVC
Cellular service available
SVC2
Two or more control channels available
RXD
Data being received from cellemetry radio
TXD
Data being sent to cellemetry radio
Table VIII-2
dB POOR
FAIR
GOOD
BEST
-114
-107
0 0 0 0
-106
-104
S 0 0 0
-103
-101
F 0 0 0
-100 -98
1 0 0 0
-97 -95
1 S 0 0
-94 -92
1
F 0 0
-91 -89
1
1
0 0
-88 -86
1
1
S 0
-85 -83
1
1
F 0
-82 -80
1
1
1
0
-79 -77
1
1
1
S
-76 -74
1
1
1
F
LED Key
0 = OFF
S = SLOW
F = FAST
1 = ON
-73 higher
1
1
1
1
