Technical data

27
Instrument Memory & Volatility
ESG and PSG Memory
Table 5-7 Hard Disk (E4438C/E8267C/E8267D with Option 005)
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. Media
Storage
(Built-in Hard
Disk)
6GByte or
10 GByte
(4 GByte
usable in both
cases)
Yes Yes User files, including
flatness calibrations,
IQ calibration,
instrument states,
waveforms (including
header and marker
data), modulation
definitions, and
sweep lists
User-saved
data
The hard disk
is an option
for vector
instruments
(E4438C
Option 005,
E8267D
Option 005,
and E8267C
Option 005)
and is
therefore not
installed in
some
instruments.
If it is
installed,
these files are
stored on the
hard disk
instead of in
flash memory.
The magnetic
residue
requires several
rewrite cycles
or drive removal
and
destruction.
User data is
completely
sanitized by the
procedure
“Erase and
Sanitize All” on
page 32.
2. Buffer
Memory
(DRAM)
512 KByte
No No Buffer (cache)
memory
Normal
operation,
via hard disk
Turn off
instrument
power.