The UFX BER IBS/IDR Precision C/N Generator. The UFX is a fully automated instrument that sets and maintains a highly accurate ratio between a user-supplied carrier and internally generated noise, over a wide range of signal power levels and frequencies. The UFX-EbNo gives system, design, and test engineers in the cellular/PCS, satellite and military communication industries a means of obtaining higher yield through automated testing, plus increased confidence from repeatable, accurate test results.