Advantest R3765A Network Analyzer

The Advantest R3765A is a benchtop vector network analyzer engineered for precision characterization of RF and microwave components. It delivers complex transmission and reflection measurements across a 40 MHz to 3.8 GHz operating range with 100 dB dynamic range and dual receiver channels. The synthesized frequency source provides 1 Hz resolution and 0.002% accuracy, while output power spans from 0.158 mW to 50.1 mW with 0.01 dB resolution.

High-speed signal processing enables test-point measurements in 0.15 ms intervals.

Technical Specifications

• Frequency range (source and receiver): 40 MHz to 3.8 GHz


• Frequency resolution: 1 Hz


• Frequency accuracy: 0.002%


• Output power range: 0.158 mW to 50.1 mW


• Power resolution: 0.01 dB


• Power accuracy: ±0.5 dB


• Output impedance: 50 Ω


• Dynamic range: 100 dB


• Displayed average noise floor: –100 dBm to –90 dBc


• Maximum input level: 0 dBm


• Sweep speed: 0.15 ms per test point


• Receiver channels: 2

Key Features

• Vector network analysis with S-parameter measurement capability on select models


• Simultaneous display of up to four diagrams and eight traces; supports dual-device measurement


• Programmable sweep function: user-definable resolution bandwidth, power level, and measurement timing per point


• Electronic attenuator for high-speed characterization


• Parametric measurements: magnitude, phase, group delay, and impedance


• SCPI-compatible command language with built-in BASIC controller

Typical Applications R&D prototyping, manufacturing test, quality control, and component validation in RF and microwave environments.

Compatibility & Integration

• RS-232 serial interface (printer, barcode reader)


• IEC/IEEE GPIB for instrument control


• User-definable parallel interface for feeder systems


• Data storage via 3.5" floppy disk drive (720 KB, 1.2 MB, 1.4 MB MS-DOS formats)