Safety Considerations - HP 11793A Operating And Service Manual

Model
Safety Considerations
SAFETY CONSIDERATIONS
GENERAL
This product and related documentation must be
reviewed before operation for familiarization with
safety markings and instructions.
This product is a Safety Class
I
instrument (pro-
vided with
a
protective earth terminal).
BEFORE APPLYING POWER
Verify that the product is set to match the available
line voltage and the correct fuse is installed.
SAFETY EARTH GROUND
An uninterruptible safety earth ground must be
provided from the main power source
to
the prod-
uct input wiring terminals, power cord, or supplied
power cord set.
SAFETY SYMBOLS
Instruction manual symbol: the product
A
will be marked with this symbol when it is
necessary for the user to refer to the instruction
manual (refer to Table of Contents).
Indicates hazardous voltages.
1 ,
Indicates earth (ground) terminal.
f
-
The WARNING sign denotes
a
hazard. I t calls attention to a
procedure, practice, or the like, which, if not cor-
rectly performed
or
adhered to, could result in per-
sonal injury.
Do
not proceed beyond
a
WARNING
sign until the indicated conditions are fully under-
stood and met.
The CAUTION sign denotes a
hazard. It calls attention to an
operating procedure, practice, or the like, which, if
not correctly performed or adhered to, could result
in damage to or destruction of
part
or a l l of the
product.
Do
not proceed beyond a CAUTION sign
until the indicated conditions are fully understood
and met.
I
WARNING
1
Interrupting the protective (grounding) conductor
(inside
or outside the instrument) or disconnecting
the protective earth terminal will cause a potential
shock
hazard that could result
in
personal injury.
(Grounding one conductor of a two conductor outlet
is
not sufficient protection).
Whenever
it is
likely that the protection has been
impaired, the instrument must be made inopera-
tive and be secured against any unintended
operation.
If this instrument
is
to be energized via an auto-
transformer (for voltage reduction), make sure the
common terminal
is
connected to the earth termi-
nal of the power source.
Servicing instructions
are f o r use
by
service-trained personnel only. To avoid dangerous
electric shock, do not perform any servicing unless
qualified to do
so.
Adjustments described
in the
manual are per-
formed with power supplied to the instrument
while protective covers are removed. Energy avail-
able at many points may,
if
contacted, result
in
per-
sonal injury.
Capacitors inside the instrument may still be
charged even
if
the instrument has been discon-
nected from its source of supply.
For
continued protection against fire hazard, re-
place the line fuse(s) only with 250V fuse(s) of the
same current rating and type (for example, normal
blow, time delay, etc.).
Do
not use repaired fuses
or short-circuited fuseholders.
..
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