Thermal Considerations; Sed (Smart Error Detection); Firmware Upgrade - Sierra Wireless AirPrime SL808 Series Product Technical Specification & Customer Design Manuallines

Product Technical Specification & Customer Design Guidelines
30 Proprietary and Confidential - Specifications subject to change
• Simplified logistics—The embedded SIM does not need to be tracked, stored,
or activated (as would a physical SIM card).

3.7 Thermal considerations

When transmitting, the AirPrime SL808X Embedded Module can generate
significant amounts of heat (due to the internal Power Amplifier) that must be
dissipated in the host device for safety and performance reasons.
The amount of thermal dissipation required depends on the following factors:
• Supply voltage—Maximum power dissipation for these modules can be up to
2.0 W at voltage supply limits.
• Usage—Typical power dissipation values depend on the location within the
host, amount of data transferred, etc.
You can enhance heat dissipation by:
• Maximizing airflow over/around the module
• Locating the module away from other hot components
You can use !PCTEMP or !GSTATUS to return the module's current temperature.
See [2] AirCard/AirPrime UMTS Devices Supported AT Command Reference for
details.

3.8 SED (Smart Error Detection)

The AirPrime SL808X Embedded Module modules use a form of SED to track
premature modem resets. In such cases, the module automatically forces a
pause in boot-and-hold mode at power-on to accept an expected firmware
download to resolve the problem.
1. Module tracks consecutive resets within 30 seconds of power-on.
2. After a third consecutive reset, the module waits in boot-and-hold mode for a
firmware download to resolve the power-cycle problem.

3.9 Firmware upgrade

Firmware upgrades are downloaded to the modem over the USB or UART
interfaces. Contact your Sierra Wireless account representative for assistance.
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