The Antenna Switch function enables switching between two antennas and can be implemented on customer application.This application note describes how to design a GSM antenna switch, from component selection to PCB implementation. This switching function can be used with an antenna detection system.

This application note provides all necessary information to perform Firmware Over-The-Air (FOTA) on Sierra Wireless AirPrime HL Series modules. This application note applies to all products in the AirPrime HL6, HL7, and HL8 Series.

This application note describes the successive firmware versions needed to upgrade an HL6528-G or HL6528-G2.8V module from one version to another.

This technical note describes the GNSS issue that could be observed in very rare cases on HL8548-G and HL8549-G modules, and describes a workaround to overcome this issue.

This application note describes the method for measuring current consumption of a WP8548/75xx module in ULPM in a mangOH Green platform.

This technical note describes the GNSS issue that has been observed to occur on very rare cases on HL6528-G and HL6528-G2.8V modules, and describes a workaround to overcome this issue.

This application note describes Firmware modifications implemented to make the HL6528x embedded module resistant to power outages during a FOTA upgrade, and explains how users can make their devices more robust against power outages.

WP module performances using Wi-Fi Reference Design with Legato & mangOH

This application note provides a schematic diagram example of a PCM codec for the AirPrime HL6 and HL8 series of embedded modules.

This application note describes the Dual SIM Dual Standby feature of the HL6528x embedded module.

This application note describes the steps needed to get debug logs (using Mobile Analyser and 3G Firmware Trace Tool) for the HL854xx on Windows and on other OS, either through USB or UART.

The purpose of this document is to give a general overview of the audio system in 2G M2M HL6528x and HiLoV2 modules. It describes the internal audio system blocs.

This application note describes the setup and procedure to make voice calls using the I 2 S interface of the AirPrime SL9090 with the AirPrime SL Series Development Kit.

GPS receivers of Sierra Wireless AirPrime modules can be connected to a passive antenna (which should be physically located very close to the unit) or a remote active antenna containing an LNA, which will both improve SNR and compensate for any cable/insertion losses. This application note describes the use of the integrated GPS active antenna powering function when available, and how to design an external powering circuit where required.

This application note presents the recovery mechanism of the Open AT Application Framework. The goal of the mechanism is to avoid infinite and uncontrolled reset loops in the firmware.

This application note provides a schematic diagram example of an I 2 S codec for the AirPrime AR755x and WP710x embedded modules.

This application note explains how to use the new jamming detection algorithm in the AirPrime HL6528x embedded module via the +KJAM AT command.

This application note describes how to perform voice over IP using PCM (for 3G modules) and AMR (for 2G modules).

This application note describes how to interface an external battery charging solution with an AirPrime wireless module. It is useful if you have the following requirements: Measured current consumption Different modules' operating modes Different scenarios. This application note will be useful for those customers who want to obtimize the size and the capacity of the battery to be used.

This Application Note describes a method to wake up an embedded module by motion detection through the use of a 3 axis accelerometer. Generally, when an AirPrime embedded module is not needed in working mode, the best way to save energy is to enter into ALARM mode. It can then be woken up by programming an RTC interrupt. However, in specific applications, it can be useful to wake up the AirPrime module when a movement is detected. This application note shows a method to implement this mechanism.