To reset the instrument to its factory default state, press   and then 
select the Set to Defaults softkey. Press YES to confirm the operation. 
 
The Set to Defaults functionality will program the instrument’s default 
setting. This is related to the electrical signals that are generated at the 
instruments output connectors. 
 
The Set to Defaults does not affect system settings like GPIB address, LAN 
configuration, and Display brightness. In short everything that has nothing to 
do with the BNC connectors. 
 
There is another mechanism that will reset everything. This is called 
SECURE ALL and can be found under Utility/System/Security. 
 
SECURE ALL does a full format of every NON-VOLATILE storage in the 
instrument:  
  Set the instrument’s default setting (just like ‘Set to Defaults’) 
  It erases all settings and waveforms that are stored on the 
instruments internal memory 
  It resets all system settings like LAN, GPIB address.  
 
SECURE ALL brings the instrument back to the ‘delivery state’, and takes 
some time (several minutes) in doing this. 
 
For a complete listing of the instrument’s power-on ans reset conditions, 
see “Factory Default Settings”.