ELECTRICAL SAFETY CONSIDERATIONS
GENERAL
The product and related documentation must be reviewed for
familiarization with safety markings and instructions before
The CAUTION sign denotes a
operation. hazard. It calls attention to an
This product is a Safety Class I instrument (provided with a operating procedure, practice, or the
like, which, if not correctly performed
protective earth terminal).
or adhered to, could result in
damage to or destruction of part or
BEFORE APPLYING POWER
the entire product. Do not continue
Verify that the product is set to match the available line voltage beyond a CAUTION sign until the
and the correct fuse is installed. Refer to Section 2, Installation.
indicated conditions are fully
understood and met.
SAFETY EARTH GROUND
An uninterruptible safety earth ground must be provided from
the main power source to the product input wiring terminals, Any interruption of the protective (grounding) conductor (inside
power cord, or supplied power cord set.
or outside the instrument) or disconnecting the protective earth
terminal will cause a potential shock hazard that could result in
SAFETY SYMBOLS personal Injury. (Grounding one conductor of a two conductor
outlet is not sufficient protection).
Instruction manual symbol: the product Whenever it is likely that the protection has been impaired, the
will be marked with this symbol when it instrument must be made inoperative and be secured against
is necessary for the user to refer to the any unintended operation.
instruction manual.
If this instrument is to be energized via an autotransformer (for
voltage reduction) you must make sure the common terminal is
Indicates hazardous voltages. connected to the neutral (earthed pole) 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.
Indicates earth (ground) terminal.
Adjustments described in the manual are performed with power
supplied to the instrument while protective covers are removed.
The WARNING sign denotes a hazard. It
Energy available at many points may, if contacted, result in
calls attention to a procedure, practice, personal injury.
or the like, which, if not correctly
Capacitors inside the instrument may still be charged even if the
performed or adhered to, could result in instrument has been disconnected from its source of supply.
personal injury. Do not proceed beyond
a WARNING sign until the indicated For continued protection against the fire hazard, replace the line
conditions are fully understood and met.
fuse(s) only with 125V fuse(s) of the same current rating and
type (for example, normal blow, time delay, etc.). Do not use
repaired fuses or short circuited fuse holders.
From 1.2 kilovolts to 12 kilovolts dc is present on the anode of
the laser tube in the 5501B. Exercise extreme caution when
working inside the instrument. The high voltage could cause
serious personal injury if contacted. Any adjustments performed
should be by service trained personnel only.
LASER HEAD SAFETY CONSIDERATIONS
LASER RADIATION IS EMITTED FROM THE APERTURE ON THE 5501B LASER HEAD AS
ILLUSTRATED ON THE FOLLOWING PAGE. DO NOT STARE INTO BEAM. THIS PRODUCT IS A
CLASS II LASER PRODUCT CONFORMING TO U.S. NATIONAL CENTER FOR DEVICES AND
RADIOLOGICAL HEALTH REGULATIONS 21 CFR 1040.10 AND 1040.11. THE MAXIMUM RADIANT
POWER OUTPUT IS 1 MILLIWATT, THE PULSE SPECIFICATION IS CONTINUOUS WAVE, THE
LASER MEDIUM IS HELIUM-NEON, AND THE WAVELENGTH IS 632.991 NANOMETRES.
LASER RADIATION IS ACCESSIBLE WHEN THE 5501B COVERS ARE REMOVED AND THE TEST-
NORM SWITCH, A1S2, 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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ACEC
