Host / Module Interfaces; Led Output - Sierra Wireless MC5725V Hardware Integration Manual

4: Host / Module Interfaces

Rev 1.8.2 Oct.08
In the event of a discrepancy in values between this guide and the Product Specification Document (PSD), the PSD takes precedence.

LED output

The module drives the LED output according to the PCI‐
Express Mini Card specification (summarized in Table 4‐1,
below).
Table 4-1: LED states
State Indicates
Off Module is not
powered.
On Module is powered
and connected, but
not transmitting or
receiving.
Slow blink Module is powered
and searching for a
connection.
Faster blink Module is
transmitting or
receiving.
Proprietary and Confidential
Characteristics
Light is off.
Light is on.
LED is flashing at a
steady, slow rate.
250 ms ± 25% ON
•
period
• 0.2 Hz ± 25% blink
rate
LED is flashing at a
steady, faster rate.
• Approximately 3 Hz
blink rate
Note: MC572x modules
support customer-defined
LED controls.
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