1. Úvod
This manual provides essential instructions for the installation, operation, and maintenance of your Sierra Wireless AirPrime EM7355 Wireless Cellular Modem. The EM7355 is a high-performance M.2 form factor module designed for seamless integration into various devices, offering robust 4G and 3G network connectivity.
Key features include global coverage, host-based network switching, and automatic fallback to 3G and 2G networks, making it suitable for mobile computing, networking, and industrial IoT applications.
2. Konec produktuview
The Sierra Wireless AirPrime EM7355 is a compact PCI Express M.2 module. Its design is optimized for low power consumption and easy integration into small and thin devices. It supports multiple network bands for global connectivity.

Figure 2.1: Sierra Wireless AirPrime EM7355 Wireless Cellular Modem. This image displays the compact M.2 module, highlighting its small form factor suitable for embedded applications.
Klíčové vlastnosti:
- Global coverage with support for 4G, 3G, and 2G networks.
- PCI Express M.2 form factor for easy integration.
- Host-based network switching capabilities.
- Automatic fallback to 3G and 2G for continuous connectivity.
- Optimalizováno pro nízkou spotřebu energie.
3. Nastavení
3.1. Instalace hardwaru
- Příprava zařízení: Ensure your host device (e.g., laptop, industrial PC) is powered off and disconnected from its power source. Refer to your host device's manual for instructions on accessing its internal components.
- Vyhledejte slot M.2: Identify an available M.2 slot on your device's motherboard. The EM7355 requires a B-key or B+M-key M.2 slot.
- Insert the modem: Gently align the EM7355 module with the M.2 slot's keying and insert it at a 30-degree angle. Push it firmly until it seats properly.
- Secure the modem: Once seated, push the module down towards the motherboard and secure it with the screw provided by your host device manufacturer.
- Instalace SIM karty: If your host device has an accessible SIM card slot, insert a compatible Nano-SIM card into the designated slot. Ensure it clicks into place.
- Připojení antén: Attach the appropriate cellular antennas to the modem's antenna connectors. Refer to your host device's documentation for antenna routing.
3.2. Instalace ovladače
After hardware installation, power on your host device. The operating system (Linux, PC) may automatically detect and install generic drivers. For optimal performance and full functionality, it is recommended to download and install the latest drivers and firmware from the official Sierra Wireless support webmísto.
- Navštivte Sierra Wireless Support webmísto.
- Navigate to the drivers and firmware section for the AirPrime EM7355.
- Download and run the installer package compatible with your operating system.
- Dokončete instalaci podle pokynů na obrazovce.
4. Obsluha modemu
4.1. Establishing a Cellular Connection
Once drivers are installed, your operating system should recognize the EM7355 as a cellular modem. The process for connecting to a cellular network typically involves:
- Nastavení sítě pro přístup: Open your operating system's network or cellular settings.
- Select Cellular Connection: Locate the cellular modem entry.
- Konfigurace APN: You may need to enter the Access Point Name (APN) provided by your mobile network operator. This is often automatically detected but can be manually configured if necessary.
- Připojit: Initiate the connection. The modem will attempt to connect to the strongest available network (4G, 3G, or 2G).
4.2. Network Switching and Fallback
The EM7355 supports host-based network switching, allowing your device to manage network preferences. It also features automatic fallback, meaning if a 4G signal is lost, it will seamlessly switch to an available 3G or 2G network to maintain connectivity, and vice-versa when a stronger signal becomes available.
5. Údržba
5.1. Obecná péče
- Keep the modem and host device in a clean, dry environment.
- Nevystavujte zařízení extrémním teplotám nebo vlhkosti.
- Ensure proper ventilation for the host device to prevent overheating.
5.2. Aktualizace softwaru a firmwaru
Pravidelně kontrolujte podporu Sierra Wireless. website for updated drivers and firmware. Keeping your modem's software up-to-date ensures optimal performance, security, and compatibility with new network standards.
- Download updates only from the official Sierra Wireless webmísto.
- Follow the provided instructions carefully during the update process.
- Jakmile proces aktualizace začne, nepřerušujte jej.
6. Řešení problémů
| Problém | Možná příčina | Řešení |
|---|---|---|
| Modem not detected by OS | Incorrect installation, missing drivers, M.2 slot issue. |
|
| Cannot connect to cellular network | No SIM card, invalid SIM, incorrect APN, no network coverage, antenna issue. |
|
| Pomalá rychlost připojení | Weak signal, network congestion, modem operating on 3G/2G. |
|
7. Specifikace
| Funkce | Detail |
|---|---|
| Značka | Sierra Wireless |
| Série | 314GLTEFU |
| Číslo modelu | EM7355 |
| Hardwarová platforma | Linux; PC |
| Hmotnost položky | 5.8 unce |
| Rozměry produktu (DxŠxV) | 9 x 5.5 x 1.5 palce |
| Technologie připojení | Bezdrátové (mobilní) |
| Kompatibilní zařízení | Personal Computer, Laptop, Smartphone, Tablet (via host device) |
| Počet portů | 1 (M.2 interface) |
| První dostupný termín | 30. června 2015 |
8. Informace o záruce
Warranty terms and conditions for the Sierra Wireless AirPrime EM7355 are typically provided by the point of purchase or the manufacturer. Please refer to the documentation included with your product or visit the official Sierra Wireless webpodrobné záruční informace.
For specific warranty inquiries, it is recommended to contact Sierra Wireless customer support directly or the vendor from whom the product was purchased.
9. Podpora
For technical assistance, additional documentation, or software downloads, please visit the official Sierra Wireless support resources:
- Sierra Wireless Support Webmísto: www.sierrawireless.com/support/
- Produktová dokumentace: Look for the AirPrime EM7355 series for specific guides and FAQs.
When contacting support, please have your product model number (EM7355) and any relevant host device information ready.