Considering secure environments, the internal memories of the VectorStar MS464xB Series VNA uses DRAM (Dynamic Random Access Memory) in its CPU board and Flash Memory in its DSP (Digital Signal Processing) board. The internal storage drive is an easily removable SATA Solid State Drive (SSD).
DRAM
Information stored in DRAM and used by the VectorStar CPU is temporary; this data is lost when the VectorStar is powered off.
Flash Memory
Flash Memory is used to save instrument factory calibrations and settings. No user application information is stored in Flash Memory and the memory space is not user-accessible. Since this memory space is not used by the user, nor by the instrument to store user application settings, it does not require cleansing after it has entered a secure location.
Solid State Drive (SSD)
The Solid State Drive (SSD) persistently stores instrument-dependent configuration data and measurements including instrument saved setups, custom presets, last used setups, and similar information.
Enhancing Information Security
For secure applications and locations, the removable solid-state drive (SSD) can be easily and quickly removed from the instrument chassis and left in the secure location. The VectorStar chassis can then be transferred to another location.
The Option 4 Additional Solid State Drive contains the same operating system and software applications as the SSD shipped with the VectorStar instrument. It allows the instrument chassis be functional again as a VNA in another location, either in a non-secure environment or in a second secure environment. Multiple Option 4 SSDs can therefore be used to support multiple locations.