Technical data

19
Instrument Memory & Volatility
MXG (Series A) Memory
MXG (Series A) Memory
The following tables describe each memory type used in the base instrument and optional baseband
generator.
Table 5-3 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
(DRAM)
32 MByte
Yes No Firmware operating
memory
no user data
Operating
system
CPU board,
not battery
backed.
Turn off
instrument
power.
2. Main
Memory
(Flash)
8MByte
Yes Yes Factory calibration/
configuration data
User file system
a
,
which includes
flatness calibration,
instrument states,
and sweep lists
Firmware
upgrades
and
user-saved
data
a
CPU board
(same chip as
firmware
memory, but
managed
separately)
Because this
memory chip
contains 8 MB
of user data
(described
here) and 8 MB
of firmware
memory, a
full-chip erase
is not desirable.
User data areas
are selectively
and completely
sanitized by the
procedure
“Erase and
Sanitize All” on
page 32.