Industrial Modem Selection Guide: Precise Matching, Empowering Efficient IoT Communication

In the field of IIoT, Industrial Modem is a bridge connecting devices and networks, and its selection is crucial to ensure the stability and efficiency of data transmission. The following is a detailed guide to selecting industrial modems, designed to help users accurately match the most suitable modems for their application needs, thereby enabling efficient IoT communication.

1.Understand The Basic Functions and Characteristics of Industrial Modem

Industrial Modem is a device that converts digital signals into analog signals suitable for transmission over telephone lines, and demodulates the received analog signals back into digital signals. Its core functions include modulation, demodulation, compression, error correction, flow control, and fax. Industrial Modem usually adopts industrial-grade chip design, with anti-static, anti-interference, anti-humidity and other characteristics, and can operate stably in harsh industrial environments.

2. Clarify The Requirements for Model Selection

Before selecting a model, users need to clarify the following requirements:

Communication protocol: Determine the required communication protocol, such as V.90, V.34, V.32bis, etc., and whether it supports PPP, AT instruction set, etc.

Transmission rate: Select appropriate upload and download rates based on the data transmission requirements of the application scenario.

Interface type: Determine the required interface type, such as RS232, RS485, etc., and whether it supports TTL level.

Working environment: Considering the industrial environment in which the Modem will be deployed, such as temperature, humidity, electromagnetic interference, etc., choose a Modem with the appropriate level of protection.

Remote management: whether remote configuration, upgrade and maintenance are required.

3. Evaluate Key Technical Indicators

Stability and reliability: Select high-quality industrial-grade chips and Modems with watchdog design and automatic reset functions to ensure stable operation in harsh environments.

Lightning protection and electrical protection: Select a Modem with closed-loop dual lightning protection, high current, and high voltage protection functions to ensure safe use in extreme weather conditions such as lightning.

Data transmission efficiency: Evaluate the compression and error correction capabilities of the Modem, as well as whether it supports dynamic data transmission and rate adjustment functions, to improve data transmission efficiency and accuracy.

Compatibility:Ensure that the selected Modem is compatible with existing operating systems, data transmission software, and communication devices.

4. Recommendations for Model Selection and Case Studies

USR Cellular MODEM: G771 is a LTE Cat.1 communication modem, which supports LTE and GSM, and covers the mainstream frequency bands of European operators. It has perfect software function, supports TCP/UDP transparent transmission.

DR154: The USR-DR15X series device is the latest lipstick-sized

4G LTE modem introduced by PUSR. This product integrates a 4G module, providing a stable and reliable network connection for IoT applications.

G786: 4G cellular modem USR-G786-G was launched in 2020 featuring with rugged design, high speed, lowlatency, compact size, high reliability and global bands.

Industrial-grade RS232 Interface Modem:
Using Conexant's original ROCKWELL main control chip, it supports PNP function and is easy to install, suitable for unmanned environments such as power, oil, and telecommunications.

It has compression, error correction, flow control and G3 fax functions, and can be set through AT commands, with stable and reliable performance.

The selection of industrial Modem needs to consider factors such as communication protocol, transmission rate, interface type, working environment, and remote management requirements. By evaluating key technical indicators such as stability, reliability, data transmission efficiency, and compatibility, users can accurately match the most suitable Modem for their application needs. In addition, understanding the characteristics and application cases of different brands and models of Modem helps users make more informed selection decisions, thereby enabling efficient IoT communication.