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ETSI EN 300 328 Wireless Testing of Wideband Transmission Systems

As a leader in RF regulatory compliance testing, Keystone Compliance recognizes the requirements needed for wireless radio manufacturers. Meeting the ETSI, FCC, and other wireless testing specifications can be challenging. Not only do we understand the challenges, but we help guide companies through the process. 

From concept through compliance, Keystone meets all of our customers’ needs under one roof. Keystone Compliance takes pride in providing the peace of mind that all of your wireless testing needs will be met. Keystone has a reputation for helping customers achieve their wireless product certifications. 

Request a quote to receive expert wireless testing services tailored to your specific needs. Contact us to discuss your product and how we can assist you in achieving wireless testing certifications.

Significance of ETSI EN RF Radio Equipment Testing

The spurious emissions limits have been modified from 470 MHz – 862 MHz and 862 MHz – 1 GHz to 470 MHz – 694 MHz and 694 MHz to 1 GHz. Though the changes look small on paper, these are considered major changes to the testing method.

Receiver blocking changes have been made to improve the testing procedure. This includes the changes such as differences in wanted signal mean power, blocking signal frequencies, and blocking signal power. 

Summary of ETSI EN 300 328 Wireless Intentional Radiator Testing

This ETSI EN wireless regulatory document applies to Wide Band Data Transmission (WBDT) equipment and Data transmission equipment operating in the 2.4 GHz band. The RF compliance document also describes spectrum access requirements to facilitate spectrum sharing with other equipment.

It must be noted that equipment using Ultra Wide Band (UWB) technology is not covered in this standard. However, this EMC regulatory compliance test contains requirements to demonstrate that radio equipment both effectively uses and supports the efficient use of radio spectrum. This is to avoid harmful interference.

Scope of RF Testing on Wireless Devices

Technical requirements of this EMC wireless device standard apply under the environmental profile for the operation of equipment. This environmental profile must be declared by the manufacturer

There are two categories of Wide Band Data Transmission equipment.

  • Equipment using Frequency Hopping Spread Spectrum modulation
  • Equipment using other types of wideband modulation

Both adaptive and non-adaptive equipment is covered in this document.

Adaptive equipment – This equipment can be defined as any equipment operating in adaptive mode. This is a mode in which equipment can adapt its medium access to its radio environment. Adaptive equipment uses an automatic mechanism that allows the equipment to adapt automatically. This equipment adapts to its radio environment by identifying frequencies that are being used by other equipment.

Adaptive equipment may have more than one adaptive mode implemented. It is also allowed to operate in a non-adaptive mode.

Non-adaptive equipment – does not use an automatic mechanism. This equipment is subjected to certain restrictions concerning the medium to ensure sharing with other equipment.

It is up to the manufacturer to say whether the equipment is adaptive or non-adaptive. In case of the equipment being adaptive, it is also the manufacturer’s responsibility to declare if there is more than one adaptive mode implemented. Manufacturers must also declare whether the equipment can operate in a non-adaptive mode.

Keystone Compliance Offers Expert EMC Compliance Services

In addition to ETSI EN 300 328, Keystone has a full scope of expertise including multiple transmitters, licensed exempt radios, and simultaneous transmitters. We can accommodate fixed, mobile and portable devices of all sizes. Keystone has a full lab of test equipment which permits us to provide short lead times on scheduling.

Complete our request a quote form to get a jump start on the conversation. Have a question about wireless telecom and product development testing? Contact us or call (724) 657-9940 and we will determine the best course of action.