Other topics about Setting Control Functions
The software options can be purchased separately to enhance the E5072A measurement functionality. When you purchase the software option upgrade kit, Keysight provides the software entitlement certificate.
Press System > Service Menu > Enable Options, then select option which you want to activate.
Enter the relevant 12-character long license key sent by Keysight in the Key Code entry dialog box, then click Enter.
Check the installed option according to Checking_Serial Number and Option.
The license keys are kept in a text file (.lic) located at RECOVERY(E):\LICENSE\gen.lic. When you change the removal hard disk, copy the file as back up. Even if you have lost the file, you can activate the option again if you have the license number. You can re-create the license number at http://www.keysight.com/find/softwarelicense with your software entitlement certificate.