Other topics about Maintenance
The user is requested to back up the stored programs and data into external media by using the instrument's storing function before requesting the Company's Service Center to repair the instrument or replace storages.
Please take note that the Company will not be held liable to any extent for potential erasure or change of stored programs or data due to the repair or replacement of storages performed by the Company. When a storage itself fails, the programs and data stored in it cannot be recovered.
If it is necessary to send the unit to the Service Center of Keysight Technologies for repair or regular calibration, please follow the instructions below.
When requesting repair or regular calibration of the unit by our Service Center, send only the E4990A main unit without any installed option you may have ordered. Unless specifically instructed, it is not necessary to send accessories and calibration kits.
Use the original package and shock absorbers, or equivalent anti-static packing materials, when sending the unit.
For the location of the nearest Keysight Technologies Service Center, contact the Customer Contact.
The recommended calibration period for this instrument is one year. The user is recommended to request the Company's Service Center to perform regular calibration every year.