Iec Symbols - HP 4935A Operating And Service Manual

Model &%A
The follownq IS rl 1151 of key I EC symbols used by Hewlett-Packard. All symbols
are normally applwd adlacent to the device requur~ng the symbol. They shall not
be placed on removable parts likely to be detached or lost.
Manual symbol: If necessary. to preserve the
the mstruct~on
may be dangerous when connecting
those dewces shall be marked wth the flash shown when the
Earth Termunals.
earth termmal
be modlfled. for example, by bang placed irwde a circle (IEC
AC current (IEC 117-l. symbol No. 3).
DC current fIEC 117-l. symbol No. 2).
AC or DC current (I EC 1 17-l. symbol No. 8).
Frame or chaws connection.
pletely or partly omitted if there
hatching is omated, the line representing the frame or chassis
shall be thrcker (I EC 117.1, symbol No. 87).
A Ampere (IEC 1174, symbol No. 356).
V Volt lltC 1174. symbol No. 357).
VA
w Watt (I EC 1174, symbol No. 3601.
W h
manual, then shall the apparatus be marked
to or dlsconnectlng
Standards, it may
The hatchmg may be com-

IEC SYMBOLS

In addltlon the following describes the use of Warmngs.
in HP Automatic Test System Manuals.
Warnings, cautions and notes. (All) Warmngs and caut!ons shall precede the text
to which each apples but notes may precede or follow applicable text depending
from
on the material to be highllghted.
procedural steps nor shall they be numbered. When a warmng, caution, or note
of two or more paragraphs, the
shall not be repeated above each paragraph. If it is ever necessary to precede a
paragraph by both a warmng and a note, or a caution and a note, etc. they shall
appear m the sequence as noted, namely. warnings.
An operating
loss of life.
An operating procedure, practw, etc. which, if not
strictly observed, could result tn damage to, or
destruction of, eqwpment.
NOTE: An operating procedure, condmon,
factors, in the environment or use of the equipment
Hertz (IEC 1174. symbol No. 365).
Contactor, normally closed. In order to avold confusion with
t h e s y m b o l f o r a capacitor. t h e deance b e t w e e n t h e
horizontal (as drawn here) lines should be at least equal to
the length of those lines (IEC 117-3, symbol No. 215.21.
Cautions and Notes used
WARNING, CAUTION, NOTE,
procedure, practtce. etc. which. If not
followed, could result III personal injury or
IEC Symbols
notes. Such inserts
etc. whwzh
cannot be eliminated,
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