The Siglent SEM5014A is a high-performance 4-port Electronic Calibration (ECal) Module designed for fast, accurate calibration of vector network analyzers across a frequency range of 9 kHz to 9 GHz. Engineered for efficiency, it reduces operator error and mechanical wear by automating the calibration process through a single connection. The SEM5014A connects via USB 2.0 for both control and power, and is compatible with Siglent SNA5000A, SNA6000A, SVA1000X, and SHA800A series VNAs. Compact and easy to use, it includes LED indicators that show operational status and readiness. Its SMA female connectors ensure high signal integrity and wide compatibility in demanding RF test environments.