The 3657 Series Vector Network Analyzer is widely used in wireless communications, CATV (cable television), education, and automotive electronics for performance measurement of RF components such as filters, amplifiers, antennas, cables, and CATV splitters. The instrument runs on the Windows operating system and features error calibration, time domain analysis, fixture simulation, automatic fixture removal, and advanced time domain analysis functions. It supports multiple display formats including logarithmic amplitude, linear amplitude, impedance, standing wave ratio (SWR), phase, group delay, Smith chart, and polar coordinates. The analyzer offers multi-channel and multi-window display capabilities, and is equipped with USB, LAN, HDMI, and DisplayPort (DP) interfaces. It enables fast and accurate measurement of S-parameter magnitude, phase, and group delay characteristics of devices under test (DUTs), along with efficient and robust error correction capabilities.

• Up to 140dB dynamic range, enabling precise measurements of high-rejection-ratio components;
• Test speed of 4μs/point, significantly improving production line testing efficiency;
• Enhanced stability to meet stringent high-precision testing requirements;
• Rich functionality — in addition to the standard time-domain analysis function, optional features include automatic fixture removal and advanced time-domain analysis;
• Compact and lightweight design — allows more test instruments to be installed within the same space;
• Available in rack-mount (2U) and desktop (5U) configurations;
• Optional four-port configuration — full 16 S-parameters of a four-port network can be measured with a single connection, and differential parameter measurements are also supported;
• Powerful data analysis capabilities, such as ripple testing, bandwidth testing, and limit testing, which facilitate pass/fail judgment and improve testing efficiency;
• Equipped with LAN interface for remote control and system integration, and includes six USB ports;
• SCPI command synchronous logging with one-click script generation;
• 12.1-inch multi-parameter display on one screen with multi-touch operation.

Wide Dynamic Range With a dynamic range of up to 140dB (IFBW=10Hz), it enables precise measurement of high-rejection-ratio devices.

Ultra-fast Sweep Speed With a test speed of 4μs/point, it offers a significant improvement over the previous generation. This enhances measurement response speed and improves testing efficiency in applications such as high-speed cable testing, chip production line testing, and filter tuning.

Signal Integrity Quick Analysis The analyzer features virtual eye diagram generation and analysis based on network parameters. According to different high-speed digital communication standards, predefined eye diagram templates can be used for efficient Pass/Fail testing. Users can apply disturbances such as jitter and noise to the simulated eye diagram, and incorporate correction algorithms such as pre-emphasis and equalization to simulate eye diagrams at various positions along a high-speed link under real-world conditions.

Both rack-mount (2U) and desktop (5U) are available The rack-mount version is ideal for automated testing, system integration, and unmanned factory applications. The desktop model is better suited for traditional usage scenarios and user habits.

Four-Port Model Available With a single connection, it enables measurement of all 16 S-parameters of a four-port network, and supports balanced parameter measurements.