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HP 8901B Service Manual

HP 8901B
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Model
8901B
Service
SAFETY CONSIDERATIONS
GENERAL
This product and related documentation must be re-
viewed for familiarization with safety markings and
instructions before operation.
This product is a Safety Class
I
instrument (provided
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 pro-
vided from the main power source to the product input
wiring terminals, power cord,
or
supplied power cord
set.
SAFETY SYMBOLS
Instruction manual symbol: the product will
A
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.
Indicates earth (ground) terminal.
The WARNING sign denotes a
hazard. It calls attention to a
procedure, practice,
or
the like, which,
if
not correctly
performed
or
adhered to, could result in personal in-
jury.
Do
not proceed beyond a WARNING sign until
the indicated conditions are fully understood and met.
The CAUTION sign denotes a haz-
ard.
It
calls attention to an
operating procedure, practice,
or
the like, which,
if
not
correctly performed
or
adhered to, could result in dam-
age
to
or
destruction of part
or
all of the product.
Do
not proceed beyond a CAUTION sign until the indi-
cated conditions are fully understood and met.
I
WARNING
Any interruption of the protective (ground-
ing) conductor (inside
or
outside the instru-
ment)
or
disconnecting the protective earth
terminal will cause a potential shock hazard
that
could result
in
personal injury. (Ground-
ing 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
inoperative and be secured against any unin-
tended operation.
If this instrument
is
to be energized via an
autotransformer (for voltage reduction) make
sure the common terminal is connected to the
earth terminal of the power source.
Servicing instructions are for 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
available at many points may,
if
contacted, re-
sult
in
personal injury.
Capacitors inside the instrument may still be
charged even if the instrument has been dis-
connected from its source of supply.
For
continued protection against fire hazard,
replace the line fuse(s) only with
250V
fuse(s)
of the same current rating and type (for exam-
ple, normal blow, time delay, etc.).
Do
not use
repaired fuses
or
short circuited
fuseholders.

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HP 8901B Specifications

General IconGeneral
BrandHP
Model8901B
CategoryMeasuring Instruments
LanguageEnglish

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