Sierra Wireless AirCard 755, Руководство по установке, Страница: 51 / 64

Rev D Dec.03 49
8: Technical Specifications
• LED operation
• Radio frequency and
electrical
specifications
• Environmental
specifications
• Sending GSM
commands to the
network
This chapter describes the operation of the LED and provides
technical data for the755 wireless network card.
LED operation
The AirCard has a single LED
1
located on the antenna end of
the card beneath the SIM slot. The color (red, green or amber)
and state (off, on solid, or blinking) of the LED indicate the
connection status as follows:
1. LED—
light emitting diode
Table 8-1: LED operation
LED state How to interpret
Solid
amber
a
a. The LED is red/green. The amber color occurs when both red and
green are lit.
The AirCard is powering up, or a firmware
download is in progress.
Blinking
amber
The AirCard is scanning for service.
Blinking
green
The AirCard is in service and registered on the
network.
Solid green A voice call is in progress.
Blinking red There is a hardware problem.
Off The AirCard is powered down.