14 Keysight N991xA/N992xA/N993xA Security Features and Volatility Documentation
Instrument Memory and Volatility Information
RAM,
volatile
memory,
128 MB
Yes Yes No Vector Network
Analyzer and
Spectrum Analyzer
Firmware
operating
memory
SOM board External power and
main battery both
removed
Flash
memory, 32
Kb and
volatile
memory 1
Kb
No No Yes System monitor
micro-controller.
Factory
default setting
System board Not writable by the
user
Flash
memory,
128 bytes
No No Yes PCA identification and
revision information.
Factory
default setting
System board and RF
board
Each PCA has an ID
EPROM that stores
PCA identification and
revision information
Not writable by the
user
Flash
memory, 16
Kb, and
volatile
memory, 2
Kb
No No Yes Front panel interface
board
micro-controller.
Factory
default setting
Front panel interface
board.
Not writable by the
user
Flash
memory,
1Kb
No No Yes Vector Network
Analyzer and
Spectrum Analyzer
Factory
default setting
Main battery Not writable by the
user
Table 5-1 Summary of instrument memory - base instrument
Memory
Type and
Size
Is Memory user
accessible as a mass
storage device?
Writable During
Normal Operation?
Data Retained When
Powered Off?
Purpose/Contents Data Input
Method
Location in
Instrument and
Remarks
Sanitization
Procedure