10 
Summary of Memory Declassification Procedures 
This section explains how to clear, sanitize, and remove memory from your instrument, for all 
classes of memory that are writeable during normal operation and for which the clearing and 
sanitization procedure is more than trivial such as rebooting your instrument. 
Before beginning clearing or sanitization, be sure to write down and save the instrument’s 
Model, Serial number, Option, and software License Key information. Read this entire 
document before using any sanitization procedure. Failure to do so may necessitate 
returning the instrument to an Authorized Keysight Service Center for firmware downloads 
and recalibration. 
Table 2: NAND Flash Part B (Keysight Flash) 
User preferences and instrument states 
Size  42 MB 
On the remote interface send: SYSTem:SECurity:IMMediate 
 
This procedure clears all instrument memory except for the instrument’s firmware, MAC 
address and serial number and calibration data, and then reboots the instrument to the 
new memory state.  This routine writes all zeros to memory and then performs a full chip 
erase as per manufacturer’s data sheet. This procedure is not recommended for use in 
routine applications because of the possibility of unintended loss of data. 
If product is not operational contact Keysight www.keysight.com\find\contactus