R3477 is Advantest’s high-performance Spectrum Analyzer that has been developed to meet these requirements. R3477 Signal Analyzer achieves an average display noise level of –158 dBm and third-order intermodulation distortion (TOI) of +26 dBm. The wide dynamic range that they can measure is unprecedented. Their noise correction function enables measurement of a wide dynamic range of –86 dBc (representative value), especially useful in measurement of the adjacent channel leakage ratio (ACLR) of 3GPP (W-CDMA). In addition to RF measurement, the R3477 has a broadband modulation analysis function (25 MHz bandwidth) as standard. By adding signal analysis options, each of which is dedicated to a different communication system, the R3477 provides expanded functionality and can be used as a transmitter tester.