Agilent N5181A/82A MXG Signal Generators User’s Guide 137
Working in a Secure Environment
Removing Data from Memory (Option 006 Only)
Erase and Overwrite All
This performs the same actions as Erase All, plus it clears and overwrites the various memory types
in accordance with Department of Defense (DoD) standards, as follows:
CPU Flash Overwrites all addressable locations with random characters and then erases the
flash blocks. This accomplishes the same purpose as a chip erase. System files are
restored after erase.
To Start: Press File > More > Security > EraseandOverwriteAll > Confirm Erase
Erase and Sanitize All
This performs the same actions as Erase and Overwrite All and then adds more overwriting actions.
After executing this function, you must manually perform the additional steps described below for the
sanitization to comply with Department of Defense (DoD) standards.
To Start: Press File > More > Security > Erase andSanitize All > Confirm Sanitize
Secure Mode
CAUTION Once you activate secure mode (by pressing Confirm), you cannot deactivate or decrease
the security level; the erasure actions for that security level execute at the next power
cycle. Once you activate secure mode, you can only increase the security level until you
cycle power. For example, you can change Erase to Overwrite, but not the reverse.
After the power cycle, the security level selection remains the same, but secure mode is
not activated.
Secure mode automatically applies the selected Security Level action the next time the instrument’s
power cycles.
To Set the Level: Press File > More > Security > Security Level and choose from the following:
— None = factory preset, no user information is lost
— Erase = Erase All
— Overwrite = Erase and Overwrite All
— Sanitize = Erase and Sanitize All
To Activate: Press File > More > Security > Enter Secure Mode > Confirm
The softkey changes to Secure Mode Activated.
CPU Flash Overwrites all addressable locations with random characters and then erases the
flash blocks. This accomplishes the same purpose as a chip erase. System files
are restored after erase.
BBG Persistent
Memory (Flash)
(Vector instruments only) Overwrites all addressable locations with random
characters and then erases the flash blocks. This accomplishes the same purpose
as a chip erase. System files are restored after erase.
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