Service Guide E8364-90038 8-17
PNA Series Microwave Network Analyzers  General Purpose Maintenance Procedures
E8362C, E8363C, E8364C Option Enable Utility
Repairing and Recovering Option Data
License, option, and model number data are stored in an EEPROM on the frequency reference board and 
written into the gen.lic file on the hard disk drive. If the data stored in either of these items is lost, it can be 
recovered from the other item.
NOTE If the data on both the hard disk drive and the frequency reference board is lost, it can not be 
recovered. Contact Agilent for assistance. Refer to “Contacting Agilent” on page 2-12.
Recovery of Data After Repair
• If the frequency reference board is replaced, use the 
Repair selection to recover data that has been lost 
as a result of the repair:
1. Select 
Repair from the Option Enable menu bar (see Figure 8-5 on page 8-15).
2. Click the 
Freq Ref board has been replaced check box.
3. Click 
Begin Repair. The data is written from the gen.lic file into the EEPROM.
• If the hard disk drive is replaced, a new gen.lic file is automatically created when the 
Network Analyzer 
application starts, by retrieving the data from the EEPROM.
Recovery of Data if Option or Model Numbers are Incorrect
If the analyzer option or model numbers are not listed correctly on the analyzer display, in either the Option 
Enable Dialog Box or the About Network Analyzer display, you should regenerate the options license file, 
gen.lic:
1. Exit the 
Network Analyzer application.
2. Remove (or rename) the existing gen.lic file:
a. Open 
Windows Explorer and navigate to C:\Program Files\Agilent\Network Analyzer.
b. Delete (or rename) gen.lic.
3. Exit the 
Windows Explorer application.
4. Open the 
Network Analyzer application. The application will generate a new gen.lic file when it starts.
5. Check the option listing:
a. On the 
System menu, point to Service, and then click Option Enable, or
b. On the 
Help menu, click About Network Analyzer.
NOTE If the options are still not listed correctly, contact Agilent for assistance. Refer to 
“Contacting Agilent” on page 2-12.