User`s guide

80 Section 4A: Technical Specifications
LED Operation
The AirCard 580 has a single red/green LED on the antenna end of the card. The
LED operates as follows:
LED Behavior Indicates
Red, blinking slowly The Sprint PCS Connection Card is powering up, or
no service is available. See “Not In Service” on
page 75.
Green, blinking
slowly
The Sprint PCS Connection Card has acquired a
channel on the CDMA network and is in idle mode
(no active data session is in progress).
Green, blinking
rapidly
An active data session is in progress.
Solid red An error has occurred. Eject the Sprint PCS
Connection Card (page 21) and reinsert it.