Far Validation

FAR Validation

A Fully Anechoic Room (FAR) is an anechoic chamber that has a substantial covering of anechoic material on the floor to effectively remove the ground reflection associated with a semi-anechoic chamber. Without a ground reflection, it no longer becomes necessary to sweep the receive antenna height, which can simplify testing procedures and result in shorter radiated emission test times.

The validation procedure for a FAR is equivalent to the Normalized Site Attenuation (NSA) measurement used to validate semi-anechoic chambers for emission measurements. The FAR validation is described in the standard CISPR 16-1-4 and is also referred to as an NSA measurement.

New FAR chamber validations

For new FAR chamber installations, using the services of an independent measurement provider will give you the confidence that your new chamber is validated accurately and impartially by a competent 3rd party.

We can accurately measure the NSA performance of new FAR chambers as well as FAR chamber relocations, upgrades and modified chambers worldwide.

FAR validation measurements in a Fully Anechoic Chamber (200 - 1000 MHz)

Regular recalibration of FAR chambers

For regular recalibration some laboratories may choose to perform the FAR validation in-house, however this can be a more time consuming and less accurate option than using an independent company specializing in these measurements. It also requires the use of special antennas with specific antenna calibrations.

We use custom software and measurement procedures to ensure that the FAR validation measurements are completed quickly, resulting in minimum chamber downtime for you and less disruption to your laboratory testing schedule. Typically we measure the NSA of a FAR chamber in less than a day.
Our engineers have many years of experience in the measurement of NSA in FAR chambers worldwide. By using our measurement services your laboratory personnel are available to do more productive work without needing to fully understand unfamiliar measurements that they would only be performing infrequently anyway.
NSA measurements for FAR chambers require special antennas with specific calibrations. We supply all of the required equipment so that you do not need to own and maintain specific antennas for these measurements.