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Basic Parameters of the Normalized Site Attenuation (NSA) Method for Open Area Test Sites (OATS) and Semi Anechoic Chambers (SAC) in CISPR 16‑1‑4

This article discusses the requirements for the qualification of an Open Area Test Site or Semi Anechoic Chamber for measuring radiated disturbances from 30 MHz to 1 GHz.

Lessons Learned from the Design and Construction of an Open Area Test Site (OATS) and Sound Measurement Building

1310 F2 coverHow do you construct a building without metallic components of any kind? When you are engineers charged with overseeing the design and construction of an Open Area Test Site (OATS) for your company, you find out very quickly how to build a structurally sound facility while still keeping the area free of reflective materials.

ROACH 2014: Deadline Extended for Abstract Submission

The popular Reverberation Chamber, Open Area Test Site and Anechoic Chamber (ROACH) Users Group...

2014 Reverberation Chamber, Anechoic Chamber and OATS Users Meeting Announced

The popular Reverberation Chamber, Open Area Test Site and Anechoic Chamber (ROACH) Users Group...

Site Attenuation Measurements Using External Source Control

A method of determining the performance of an open area test site (OATS) or an anechoic chamber is to perform a site attenuation measurement. The process used is to step a signal source at the transmitting antenna and use a receiver or spectrum analyzer at the receiving antenna. The two are stepped together to give a set of data that shows the performance of the test site or chamber. ANSI C63.4 outlines the process for performing normalized site attenuation (NSA) measurements. In these measurements, the spectrum analyzer controls the signal source.

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