Documentation Updating; Safety Considerations - HP 11848A Service Manual

Model 11848A
General Information
DOCUMENTATION UPDATING
An instrument manufactured after the printing of these manuals may have a serial-number prefix that
is not listed on the manual title page. Having a serial-number prefix that is greater than that shown on
the title page indicates that the instrument is slightly different from those documented in the manual.
In this case, your manual may be provided with updating information to make it as current as possible.
This updating information contains all major change information that applies to instruments beyond
the serial-prefix range defined on the title page. Minor changes may not be included but will be covered
in subsequent updates you can receive by joining the Documentation Update Service.
A Description of the Manual Update Packet
A Manual Update packet consists of replacement and addition pages which should be incorporated in
your manual to bring it up to date. (An addition page results when new information won't fit on a
replacement page.)
Signing Up for the Documentation Update Service
Hewlett-Packard offers a Documentation Update Service that will provide you with further updates
and changes as they become available. If you have not received update information that matches the
serial number of your instrument, you can receive this information through the Update Service.
If you operate or service instruments with different serial prefixes, we strongly recommend that you
join this service immediately to ensure that your manual is kept current.
For more information, refer to the Documentation Update Service reply card included in this manual
or contact:
Hewlett-Packard Company
Technical Writing Department
24001 E. Mission-TAF C-34
Spokane, WA 99220
(509) 922-4001
Also, if you join the update service, you can indicate whether you choose to be contacted in the
future about the quality of the documentation you receive. We are constantly trying to provide the
best documentation possible and periodically survey our customers as to their expectations and the
usability of the manuals we provide.
SAFETY CONSIDERATIONS
The Interface is a Safety Class I instrument (that is, provided with a protective earth terminal). Before
operation, look over the Phase Noise Interface and its related documentation to get familiar with
safety markings and instructions. Refer to the Safety Considerations page found at the beginning of
this manual for a summary of the safety information. Safety information that applies to the specific
task at hand (for example, installation) is found in this manual.