Contacting Keysight Technologies
6
Keysight N1911A/1912A Service Guide
117
Instrument Serial Numbers
Keysight Technologies makes frequent improvements to its products to enhance
their performance, usability and reliability. Keysight Technologies service
personnel have access to complete records of design changes for each
instrument. The information is based on the serial number and option designation
of each power meter.
Whenever you contact Keysight Technologies about your power meter have a
complete serial number available. This ensures you obtain the most complete and
accurate service information. The serial number can be obtained by:
– Querying the power meter over a remote interface (via the
*IDN?
Command).
– From the front panel (via the Service menu).
– From the serial number label.
The serial number label is attached to the rear of each Keysight Technologies
instrument. This label has two instrument identification entries. The first provides
the instruments serial number and the second provides the identification number
for each option built into the instrument.
The serial number is divided into two parts: the prefix (two letters and the first four
numbers), and the suffix (the last four numbers).
The prefix letters indicate the country of manufacture. This code is based on the
ISO international country code standard, and is used to designate the specific
country of manufacture for the individual product. The same product number
could be manufactured in two different countries. In this case the individual
product serial numbers would reflect different country of manufacture codes. The
prefix also consists of four numbers. This is a code identifying the date of the last
mojor design change.
The suffix indicates an alpha numeric code which is used to ensure unique
identification of each product throughout Keysight Technologies.
