The HP / Agilent E5071B ENA RF Network Analyzer dramatically improves measurement accuracy and responds to current and future test needs. Because it performs up to 125 dB 2 wide dynamic range at 10 Hz IFBW, the sweep speed can be faster at the required dynamic range. The trace noise is lowered to 0.001 dB rms at 3 kHz IFBW. It delivers accurate pass band ripple measurement of a filter. The ENAs excellent measurement performance improves test quality and repeatability as well as test throughput, which affect production yield and the overall cost of test.