Eurotech ZyWAN, User Manual

Page: 15 / 130

PART 1: GETTING STARTED
15 110150-1001F
LED Indicators
The ZyWAN has three LED lights which indicate the following:
POSITION INDICATES DISPLAY EXPLANATION
Top Power and GPS Off = ZyWAN is not powered.
On = On during startup of ZyWAN.
Slow blink = ZyWAN is running, but there is no GPS lock.
(Slow blink is approximately one blink every 2 seconds.)
Fast blink = ZyWAN running, and GPS position lock
obtained.
Middle Cellular Connection Status Off = Cellular interface not started (ppp0 not present).
On = Cellular interface started, and network communication
ability probable.
(This does not necessarily guarantee that communication can
occur. For instance, when the interface is established but the
device goes out of range of cellular coverage, the light may
still indicate a solid On condition.)
Slow blink = Received data activity detected on cellular
network.
Bottom WiFi Connection Status Off = WiFi interface not started (wlan0 not present).
On = WiFi interface started, and network communication
ability probable.
(This does not necessarily guarantee that communication can
occur. For instance, when the interface is established but the
device goes out of range of WiFi coverage, the light may still
indicate a solid On condition.)
Slow blink = Received data activity detected on WiFi
network.