Advantest

The catalog covers these instrument classes and representative models:

• RF and microwave spectrum analyzers: Advantest R3132, R3132N, R3267, R3273, U3661, U3751, R3465. These span low-Hz to multi-GHz ranges and include both bench and portable form factors.
• Vector network analyzer: Advantest R3767CG for multiport S-parameter work up to 8 GHz.
• Modulation / modulation-spectrum analyzer: Advantest R3465 (integrates spectrum and digital transmission test modes).
• Optical spectrum analyzers (OSAs): Advantest Q8381A, Q8383, Q8384, Q8344A with differing wavelength coverage, resolution, and measurement modes.
• Telecom error detector: Advantest D3286 for SDH/SONET/ATM bit rates up to 12.5 Gb/s.

Match the instrument to the measurement domain first: frequency/wavelength coverage and measurement functions. Use the model frequency or wavelength ranges when you need guaranteed coverage (for example, R3273 and U3661 list 26.5 GHz upper frequency, R3132/R3132N list 9 kHz to 3 GHz; Q8381A and Q8383 span 350 to 1750 nm).

Other decision points:

• Dynamic range and level accuracy: optical models provide level accuracy and dynamic range specs (for example, Q8383 lists ±0.4 dB power accuracy and 55 dB dynamic range; Q8384 includes sensitivity and dynamic-range figures in its specs).
• Input impedance and connector type: R3132N is specified as 75 Ω with an N-type (75 Ω) connector; many RF models list 50 Ω and specific RF connectors (check individual entries).
• Interfaces and automation: several instruments include GPIB; some portable units (U3751) add LAN and USB.
• Application features: OSAs may support WDM analysis, EDFA/noise-figure measurements, or coherence-length measurement (Q8384 and Q8344A call out these capabilities).

If test location or production-line use is a factor, compare weight, warm-up time, and power options. Examples in this catalog:

• U3751 is described as a compact 8 GHz portable analyzer with weight 5.6 kg and a 5-minute warm-up time; it supports LAN and USB interfaces.
• U3661 is a highly portable microwave spectrum analyzer (9 kHz to 26.5 GHz) with a listed weight of 8.5 kg and a 30-minute warm-up time; it also accepts external DC power or a battery pack.

Bench instruments tend to have broader feature sets, larger displays, heavier chassis and higher maximum power consumption; check the individual product entries for dimensions, weight and power requirements when rack- or bench-mounting is planned.

OSAs in the catalog target different tasks: some emphasize wide wavelength coverage and power accuracy (Q8381A, Q8383), others include high wavelength resolution and noise/EDFA analysis (Q8384). The Q8344A uses a Michelson interferometer and supports direct coherence-length measurement, a distinct measurement approach from diffraction-type monochromators.

For telecom physical-layer verification, the D3286 error detector supports 150 Mb/s to 12.5 Gb/s, PRBS patterns, automatic voltage/timing adjustment and error-location functions useful for jitter and burst-error analysis. Where specific measurement modes (WDM, EDFAs, digital transmission analysis) are required, consult the model entry for the listed capabilities.