Advantest Spectrum Analyzers

For standard RF communications, installation, and component testing, instruments operating in the 3 GHz band provide a balanced feature set. The Advantest R3131 and Advantest R3131A represent compact personal spectrum analyzers, distinguished primarily by their displays. The R3131 features a 5.7-inch monochrome LCD, while the R3131A offers a 5.7-inch color TFT LCD.

For applications demanding higher precision, the Advantest R3132 utilizes a direct digital synthesizer (DDS) local oscillator to achieve <=1% frequency span accuracy and 1.5 dB overall level accuracy. If your measurement network relies on a 75-ohm impedance standard rather than the typical 50-ohm configuration, the Advantest R3132N serves as a dedicated 75-ohm variant, providing a native N-type female input connector.

Engineers working on mobile communications standards or high-frequency microwave systems require broader dynamic ranges and higher frequency ceilings. The Advantest R3273 and Advantest R3271 extend frequency coverage up to 26.5 GHz. The R3273 is specifically optimized for digital modulation analysis, featuring an 8.4-inch color TFT display, a typical dynamic range of -145 dBc/Hz in the 2 GHz band, and a typical W-CDMA ACP measurement performance of 70 dB at a 5 MHz offset.

For applications capped at 8 GHz, the Advantest R3267 provides a fast trace update rate of up to 20 times per second and features a 1 dB gain compression point of 0 dBm (typical +3 dBm). Demanding digital mobile communication testing is also supported by the Advantest R3465 modulation spectrum analyzer, which features a standard spectrum analyzer mode alongside a dedicated digital transmission tester mode.

When characterizing filters, amplifiers, or electromagnetic interference (EMI), specialized hardware configurations are available. The Advantest R3361A, Advantest R3361B, and Advantest R3361C cover a frequency range up to 2.6 GHz and feature integrated tracking generators as a standard option. While the R3361A and R3361C are configured for 50-ohm RF systems, the R3361B is built for 75-ohm input and output tracking applications.

For EMI-adapted diagnostics, the Advantest R3265A and Advantest R3365 cover frequencies up to 8 GHz. The R3265A includes standard 6 dB EMI bandwidths of 200 Hz, 9 kHz, 120 kHz, and 1 MHz, alongside a built-in BASIC controller for automating diagnostic routines.

For field maintenance and on-site testing, the U-series emphasizes low weight, compact dimensions, and flexible power requirements. The Advantest U3751 and Advantest U3772 weigh only 5.6 kg and can be powered via AC lines, DC sources, or an optional battery pack. The U3751 covers up to 8 GHz, making it suitable for general RF field testing. For millimeter-wave and high-frequency microwave diagnostic requirements, the U3772 extends coverage up to 43 GHz and incorporates a 2.4 mm female RF input connector along with support for external USB flash storage.