Built-in calibration signal generator - When an analyzer is not used, it can operate as a dual-output signal generator: MF/HF/VHF sine output from 0.1 MHz to 350 MHz and UHF square-wave output from 240 MHz to 960 MHz. It is designed for automatic self-test and calibration at low input levels. Dual input frequency ranges - This analyzer provides two inputs: a high-quality MF/HF/VHF input for 0.1 MHz to 350 MHz, and a UHF input for 240 MHz to 960 MHz with a lower-quality specification. PC control and compatibility - The analyzer can be connected to a PC via USB and supports the Serial-over-USB (CDC) protocol, enabling a wide range of commands. After connection, the driver is automatically downloaded. ESD protection - Version 3.1 includes a new ESD protection feature with installed diodes, delivering more sensitive response, effective anti-static performance, improved quality, and longer life. Use scenarios - Standalone RF testing: use the built-in signal generator for quick calibration and self-test when an external analyzer is unavailable. - PC-controlled testing: integrate with a computer to run automated calibration and measurement sequences via USB CDC. - Sensitive measurements: rely on the ESD protection to reduce static-related issues during UHF testing.