ELECTRICAL SAFETY CONSIDERATIONS
GENERAL
CAUTION
n
The
CAUTION
sign denotes a hazard. Itcalls
attentionto an operating procedure, practice,
This productand relateddocumentation mustbereviewedfor or the like,which, if notcorrectlyperformedor
familiarization with safety markings and instructions before adhered to, could result in damage to or
operation. destructionof part oral1of the product.Do not
proceed beyond a
CAUTION
sign until the
This product is a Safety Class I instrument
i
provided with a indicated conditionsare fully understood and
protective earth terminal
1.
met.
BEFORE APPLYING POWER
Verify that the product is set to match the available line
-1
voltage and the correct fuse is installed. Refer to
installation
Any interruption of the protect~ve
I
grounding) conductor
Section. linside or outside the instrument1 or disconnecting the
protective earth terminal will cause a potential shock hazard
SAFETY EARTH GROUND
that could result in personal injury.
grounding
one
conductor of a two conductor outlet is not sufficient
An uninterruptiblesafetyearth groundmust be providedfrom protection.
the mains power sourcetothe productinputwiringterminals,
power cord, or supplied power cord set. Whenever it
IS
likely that the protection has been impaired,
the instrument must be made inoperative and be secured
SAFETY SYMBOLS
agalnst any unintended operation.
If this instrument
IS
to be energized via an autotransformer
A
Instruction manual symbol: the product will for voltage reduction1 make sure the common terminal is
be marked with this symbol when it is neces- connected to the neutral
earthed
polel of the power source.
sary for the user to refer to the instruction
manual. 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.
$
Indicates hazardous voltages. Adjustments described in the manual are performed with
power supplied to the instrument while protective covers are
removed. Energy available at many points may,if contacted,
1
Indicates earth igroundi terminal. result in personal injury.
-
-
Capacitors inside the instrument may still becharged even if
the instrument has been disconnected from its source of
p&-1
The
WARNING
sign denotes a hazard. Itcalls supply.
attention to a procedure, practice, or the like,
which,
if
not
correctly
performed
or
adhered
For continued protection against fire hazard, replacethe line
to, could result in personal injury. Do not fuseis only with 250V fuseis)of the samecurrent rating and
proceed
beyond
a
sign
until the type (forexample, normal blow,time delay, etc.1. Do not use
indicated
conditions
are
fully
understood
and
repalred fuses or short circuited fuseholders.
met. From 1.2kilovolts to 12kilovolts dc is present ontheanode of
the laser tube in the 5517A, 55178, and 5518A. Exercise
extreme caution when working inside the instrument. The
highvoltage could cause seriouspersonal injuryifcontacted.
Any adjustments performed should be by service trained
personnel only.
LASER HEAD SAFETY CONSIDERATIONS
CAUTION
D
LASER RADIATION IS EMITTED FROM THE APERATURE OF THE 5518A, 5517A, AND 55178 LASER HEADS AS
ILLUSTRATED ON THE FOLLOWING PAGE. DO NOT STARE INTO BEAM. THIS PRODUCT IS A CLASS II LASER
PRODUCT CONFORMING TO FEDERAL BUREAU OF RADIOLOGICAL HEALTH REGULATIONS 21 CRF 1040.10 AND
1040.11 AND TO INTERNATIONAL LASER SAFETY REGULATIONS. THE MAXIMUM RADIANT POWER OUTPUT IS 1
MILLIWATT, THE PULSE SPECIFICATION IS CONTINUOUS WAVE, THE LASER MEDIUM IS HELIUM-NEON, AND THE
WAVEFLENGTH IS 632.991 NANOMETRES.
LASER RADIATION IS ACCESSIBLE WHEN THE 5518A AND 5517A COVER (OR 55178 COVERS) ARE REMOVED AND
THE TEST-NORM SWITCH IS IN THE TEST POSITION.
USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED
HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.
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