Advantest Analyzers

For standard RF analysis up to 2.6 GHz, the Advantest R3261A and Advantest R3261C serve as stable, high-resolution benchtop options. Both models provide 1 Hz tuning resolution and a built-in frequency counter, though they differ in display technology and physical input tolerances. The Advantest R3261A uses a green monochrome CRT and has a maximum DC input voltage of 0 VDC. In contrast, the Advantest R3261C features a 5.5-inch CRT display and is rated to tolerate up to 25 V of DC input, making it more robust in environments with DC bias present. When microwave frequencies are required, the Advantest R3365A extends the benchtop frequency limit to 8 GHz and integrates EMI-adapted measurement functions alongside a standard built-in BASIC controller.

For multi-port RF device characterization, the Advantest R3767CG operates as a dedicated vector network analyzer spanning 300 kHz to 8 GHz. Unlike standard spectrum analyzers, it is built for direct S-parameter measurement, covering S11 through S44 with an integrated 4-port test set. The instrument displays up to 4 channels and 8 traces simultaneously on its color display, achieving high-speed measurements at 0.15 ms per point. This makes it suitable for real-time filter tuning, multiport component analysis, and high-throughput production testing.

Field operations require compact form factors and flexible power schemes. While benchtop models like the 15 kg Advantest R3261A and the 22 kg Advantest R3365A require standard AC mains power, the Advantest U3661 is optimized for remote testing. Weighing 8.5 kg, this portable microwave spectrum analyzer covers a wide frequency span from 9 kHz up to 26.5 GHz. It operates on 100 to 120 VAC / 220 to 240 VAC, an external +10 to +16 VDC supply, or an optional battery pack, ensuring operational continuity in environments without standard AC outlets.