Printing History - Agilent Technologies 668xA Service Manual

Symbol
Direct current
Alternating current
Both direct and alternating current
Three-phase alternating current
Earth (ground) terminal
Protective earth (ground) terminal
(Intended for connection to external
protective conductor.)
Frame or chassis terminal
Terminal for Neutral conductor on
permanently installed equipment
Terminal is at earth potential
(Used for measurement and control
circuits designed to be operated with
one terminal at earth potential.)

Printing History

The edition and current revision of this manual are indicated below. Reprints of this manual containing minor corrections
and updates may have the same printing date. Revised editions are identified by a new printing date. A revised edition
incorporates all new or corrected material since the previous printing date. Changes to the manual occurring between
revisions are covered by change sheets shipped with the manual. Note that not all changes made to the power supply affect
the content of the manual. Refer to Appendix A for a history of manual updates.
Edition 1 April 1994
Edition 2 September, 2000
Updated March, 2002
© Copyright 1993, 2000 Agilent Technologies, Inc.
This document contains proprietary information protected by copyright. All rights are reserved. No part of this document
may be photocopied, reproduced, or translated into another language without the prior consent of Agilent Technologies,
Inc. The information contained in this document is subject to change without notice.
4
Safety Symbol Definitions
Description Symbol
Terminal for Line conductor on permanently
installed equipment
Caution, risk of electric shock
Caution, hot surface
Caution (refer to accompanying documents)
In position of a bi-stable push control
Out position of a bi-stable push control
On (supply)
Off (supply)
Standby (supply)
Units with this symbol are not completely
disconnected from ac mains when this switch is
off. To completely disconnect the unit from ac
mains, either disconnect the power cord or have
a qualified electrician install an external switch.
Description