Keysight Technologies 3458A Guide D'utilisation page 41

Installation and Maintenance 1
Figure 1-5 Current terminal/fuse assembly
Repair service
You may have the multimeter repaired at an Keysight Technologies service center
whether it is under warranty or not. Contact the nearest Keysight Sales Office for
shipping instructions prior to returning the instrument.
Serial number
Keysight instruments are identified by a two part, ten-character serial number of
the form 0000A00000. The first four digits are the same for all identical products.
They change only when a change is made to the product. The letter indicates the
country of origin. An A indicates the product was made in the United States of
America. The last five digits are unique to each instrument. The multimeter's serial
number is located to the right of the multimeter's rear terminals.
Shipping instructions
If you need to ship the multimeter, be certain that the multimeter is in a protective
package (use the original shipping containers and cushioning materials) to
prevent transit damage. Such damage is not covered by warranty. Attach a tag to
the shipment identifying the owner and indicating the service or repair needed.
Include the model number and serial number of the multimeter. We suggest that
you insure the shipment.
Keysight 3458A User's Guide 41