Advantest Spectrum Analyzers

When selecting an Advantest analyzer, input impedance and maximum frequency are primary differentiators. For cable and broadcast testing requiring 75-ohm impedance, the R3132N provides a 9 kHz to 3 GHz range using an N-type female connector and a Direct Digital Synthesizer local oscillator. In contrast, the standard R3132 covers the same 9 kHz to 3 GHz range with a 50-ohm input configuration. For higher frequency requirements, the R3267 extends coverage up to 8.0 GHz, while the R3273 offers microwave frequency measurements up to 26.5 GHz.

For digital mobile communications testing, certain models integrate hardware and software options to decode standards-based signals. The R3465 operates from 9 kHz to 8 GHz and features a dedicated Digital Transmission Tester Mode alongside standard spectrum analyzer functions. For more advanced testing, the high-performance R3273 supports digital demodulation options for multiple wireless protocols, including W-CDMA (3GPP), GSM, GPRS, EDGE, cdma2000, and Bluetooth. It also provides typical W-CDMA ACP measurement performance of 70 dB at a 5 MHz offset.

Physical dimensions and power configurations vary significantly across the range. High-performance benchtop models such as the R3267 and R3273 weigh 22 kg and are housed in larger enclosures measuring 424 mm wide by 177 mm high. These units require standard AC power. For field maintenance and on-site applications, the compact U3751 weighs 5.6 kg and operates on AC, DC, or a battery pack. Despite its small size, the U3751 covers 9 kHz to 8 GHz and features LAN and USB interfaces.