Security Features & Document of Volatility 14
Instrument Memory & Volatility
ESG Memory
ESG Memory
The following tables describe each memory type used in the base instrument,
optional baseband generator, optional hard disk and option flash drive.
Table 4-3 Base Instrument (All models and options)
Memory
Component,
Type and Size
Writable During Normal
Operation?
Data Retained When
Powered Off?
Purpose/Contents Data Input
Method
Location in
Instrument and
Remarks
Sanitization
Procedure
1. Main Memory
(SDRAM)
64 MByte
Yes No Firmware operating
memory
Operating
system (not
user)
CPU board.
Not battery
backed.
Turn off
instrument power.
2. Main Memory
(Flash)
20 MByte
Yes Yes Factory calibration/
configuration data
User file system, which
includes instrument
status backup, flatness
calibration, IQ calibration,
instrument states,
waveforms (including
header and marker data),
modulation definitions,
and sweep lists
Firmware
upgrades and
user-saved
data
CPU board
(same chip as
firmware
memory, but
managed
separately)
User data is not
stored in this
memory if hard
disk (Option
005) or flash
drive (Option
008/009) is
installed.
Because this
32 MB memory
chip contains 20
MB of user data
(described here)
and 12 MB of
firmware memory,
a selective chip
erase is
performed.
User data areas
are selectively and
completely
sanitized by the
procedure “Erase
and Sanitize All
(Option 006 Only)”
on page 22.
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