Includes further discussion of CVSS v3.0, a scoring rubric, and a glossary. Includes metric descriptions, formulas, and vector string. Resources & Linksīelow are useful references to additional CVSS v3.0 documents. Power supply DC 5V, 1.5A (USB or 3.Common Vulnerability Scoring System v3.0: Specification DocumentĪlso available in PDF format (316KiB). Phase noise -103 dBc/Hz (1 GHz, 10 kHz offset) Spectrum analyser specifications Frequency range 100 kHz - 6 GHz Signal generator specifications Frequency range 100 kHz - 6 GHz Measurement parameters S11, S21, S12, S22 Specifications VNA specifications Frequency range 100 kHz - 6 GHzįrequency accuracy 95 dB ( 50 dB (<6 GHz) However, it should not be seen as an alternative for a high-end VNA like the SNA5002A from the Siglent SNA5000A series. With this VNA the use of higher accuracy calibrators allows for higher precision of measurements.Īll in all, this is a powerful VNA for a limited budget. The output power may decrease when frequency is lower than 1 MHz or higher than 3 GHz. Above 3GHz the performance decreases with increasing frequency causing the port isolation to only be 50 dB at 6 GHz.įurthermore, below 1 MHz, the performance decreases with decreasing frequency and the effective dynamic range decreases to 70 dB at 100 kHz.

These remarks are as follows:ĭue to some structural limitations the S12 isolation is 10 dB worse than that of the S21 parameter. Although the LibreVNA hardware isĭesigned to be a VNA, the general hardware architecture is so similar to that of a spectrum analyser that simple two-channel spectrum measurements can also be performed.ĭue to this being an open source VNA, there are some limitations in the design. Thanks to two measurement ports this vector network analyser can be used to measure the complete set of reflection and transmission coefficients (S11/S12/S21/S22). It is able to do 10000 point dual-port measurements within one second and has an effective dynamic range of 100 dB. The PCB has 3 ADC's and a FPGA for all the signal signal processing. The VNA is an RF frontend with some processing power but everything else is handled in the PC application. The LibreVNA is an open source USB based vector network analyser with 2 ports.

Vector network