Advantest R3765C Network Analyzer

The Advantest R3765C is a vector network analyzer designed for RF component characterization across demanding R&D and quality assurance environments. It measures complex transmission and reflection characteristics of two-port devices, delivering S-parameter data with magnitude, phase, and group-delay analysis. The instrument combines a synthesized integral signal source with a built-in S-parameter test set, achieving 0.15 ms sweep speed per test point under 2-port full calibration and supporting 100 dB dynamic range.

Technical Specifications

Frequency coverage spans 40 MHz to 3.8 GHz on both source and receiver. The synthesized signal source provides 1 Hz frequency resolution and 0.002% accuracy. Output power ranges from 0.0000316227766016838 W to 10 mW with 0.01 dB resolution and 0.5 dB accuracy. Output impedance is fixed at 50 Ω. Measurement sensitivity reaches −100 dBm displayed average noise floor, with maximum input handling at 12 dBm. The single-channel receiver architecture supports four-channel configurations and multi-port capability through additional input channels. Electronic attenuator enables high-speed characterization of performance across the dynamic range.

Key Features

• Programmable sweep with user-defined resolution bandwidth, power level, and measurement time per point


• TFT color LCD displaying up to four diagrams and eight traces simultaneously


• Software fixture function for normalized impedance conversion beyond 50 Ω


• Matching network simulation capability


• Balancing measurement function for symmetric circuits


• Limit lines for automated test result evaluation


• Ratioed measurements including phase analysis via multi-receiver configuration

Typical Applications RF component testing, transmission line characterization, filter and amplifier evaluation, and impedance matching analysis in laboratory and production environments.

Compatibility & Integration RS232 connectivity enables peripheral device integration. Built-in BASIC controller supports programmable menu-guided operation and automated test routines. SCPI-compatible command language and IEC/IEEE bus (GPIB) interface provide external instrument control and data transfer.