Instruments Covered By This Manual - Keysight Technologies E4981A Service Manual

General Information

Instruments Covered by This Manual

Instruments Covered by This Manual
The ten-character serial number is stamped on the serial number plate (Figure 1-1) on the
rear panel.
Figure 1-1 Serial Number Label
E4981A
MY12345678
An instrument manufactured after the printing date of this manual may have serial number
prefix that is not listed on the title page. This unlisted serial number prefix indicates the
instrument is different from those described in this manual. The manual for this new
instrument may be accompanied by a yellow Manual Changes supplement or have a
different manual part number. This sheet contains "change information" that explains how
to adapt the manual to the newer instrument.
In addition to change information, the supplement may contain information for correcting
errors (Errata) in the manual. To keep this manual as current and accurate as possible,
Keysight Technologies recommends that you periodically request the latest Manual
Changes supplement. The supplement for this manual is identified by this manual's
printing data and is available from Keysight Technologies. If the serial prefix or number of
an instrument is lower than that on the title page of this manual, see Appendix A, Manual
Changes. For information concerning, a serial number prefix that is not listed on the title
page or in the Manual Changes supplement, contact the nearest Keysight Technologies
office.
Chapter 1 15