80 Chapter 3
Basic Operation
Using Security Functions
Erase and Sanitize All
CAUTION Do not use this function with signal generator firmware revisions C.04.84, C.04.86, or
C.04.95. If you have one of these revisions installed, please upgrade immediately to revision
C.04.96 or later.
This function performs the same actions as Erase and Overwrite All and then adds more overwriting actions.
After executing this function, you must manually perform some additional steps for the sanitization to
comply with Department of Defense (DoD) standards. These actions and steps are described below.
To carry out this function, press
Utility > Memory Catalog > More (1 of 2) > Security > Erase and Sanitize All >
Confirm Sanitize.
Removing Persistent State Information Not Removed During Erase
Persistent State
The persistent state settings contain instrument setup information that can be toggled within predefined
limits such as display intensity, contrast and the GPIB address. In vector models, the user IQ Cal is also
saved in this area.
The following key presses or SCPI commands can be used to clear the IQ cal file and to set the operating
states that are not affected by a signal generator power-on, preset, or *RST command to their factory default:
Instrument Setup
• On the front panel, press: Utility > Power On/Preset > Restore System Defaults > Confirm Restore Sys Defaults
• Or send the command: :SYSTem:PRESet:PERSistent
LAN Setup
The LAN setup (hostname, IP address, subnet mask, and default gateway) information is not defaulted with a signal
generator power-on or *RST command. This information can only be changed or cleared by entering new data.
SRAM All addressable locations are overwritten with random characters.
DRAM All addressable locations are overwritten with a single character. You must then power off the
instrument to purge the memory contents.
Hard Disk All addressable locations are overwritten with a single character and then a random character. (This is
insufficient for top secret data, according to DoD standards. For top secret data, the hard drive must be
removed and destroyed.)
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