Security Features & Document of Volatility 16
Instrument Memory & Volatility
ESG Memory
7. Boards
Memory
(Flash)
512 Bytes
No
Yes
Factory calibration and
information files, code
images, and self-test
limits
Factory or
service only
All RF boards,
baseband
generator, and
motherboard
None required (no
user data)
8. Micro-
processor Cache
(SRAM)
3 KByte
Yes
No
CPU data and instruction
cache
Memory is
managed by
CPU, not user
CPU board, not
battery backed.
Turn off
instrument power.
Table 4-4
Vector Models with Baseband Generator (E4438C with Options 601 or 602)
Memory
Component,
Type and Size
Wr
itab
le D
uring
Normal
Op
eration?
Data
Re
taine
d Whe
n
Power
ed Off
?
Purpose/Contents
Data Input
Method
Location in
Instrument and
Remarks
Sanitization
Procedure
1. Waveform
Memory
(SDRAM)
40 MByte
320 MByte
Yes
No
Waveforms (including
header and marker data)
and PRAM
Normal user
operation
Not battery
backed.
User data is
completely
sanitized by the
procedure
2. BBG Firmware
Memory
(Flash)
32 MByte
No
Yes
Firmware image for
baseband generator
Firmware
upgrade
None required (no
user data)
Table 4-3
Base Instrument (All models and options)
Memory
Component,
Type and Size
Wr
itab
le Dur
ing
No
rm
al
Operat
ion?
Data
Reta
ine
d When
Po
we
re
d Of
f?
Purpose/Contents
Data Input
Method
Location in
Instrument and
Remarks
Sanitization
Procedure
