User's Guide

Rev 1 Jun.11 7
LED operation
The AirCard 313U USB Modem has two LEDs that show the current status of the
modem.
Connection management software
Your AirCard 313U USB Modem comes with Sierra Wireless AirCard Watcher for
Windows
®
and Mac
®
, or other connection management software, depending on
your service provider. Use this software to manage the modem and monitor your
connections.
For information on Watcher features and using Watcher, refer to the online Help.
From the main Watcher window, select
Help > Help Topics or click the button
(Windows) or Help > Sierra Wireless Watcher Help (Mac).
Note: Watcher is compatible with earlier Sierra Wireless modems.
LED State Indicates
Power Off Indicates one of the following states:
• The modem is not inserted in the computer.
• The computer is off or in “suspend and resume” mode.
• The modem radio has been turned off using Watcher
®
or another
connection client.
Solid Blue The power is on, the modem is working normally, and the firmware is not
being upgraded.
Blinking Blue The firmware is being upgraded.
Do not remove the modem from the computer.
Blinking Amber The modem is searching for service (initializing).
Solid Amber Error—either the modem is having a problem initializing (searching for
service) or is offline because of a failure.
Contact your service provider.
Data Off The modem is unable to detect 2G or 3G service.
Blinking Amber The modem has detected a 2G network (EDGE, GPRS, GSM) and is ready
to connect.
Solid Amber The modem is connected to a 2G network and is able to send and receive
data.
Blinking Blue The modem has detected a 3G network (UMTS, HSPA, HSPA+) and is ready
to connect.
Solid Blue The modem is connected to a 3G network and can send and receive data.
Blinking Green
a
The modem has detected an LTE network and is ready to connect.
Solid Green The modem is connected to an LTE network and can send and receive data.
a. LTE LED functionality is preliminary