HP 16550A User Reference page 262

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Packard Company 1992-1994
All Rights Reserved.
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subject to
change without notice.
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limited to, the implied
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fitness for a particular
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Safety
This apparatus has been
designed and tested in
accordance with IEC
Publication 348, Safety
Requirements for Measuring
Apparatus, and has been
supplied in a safe condition.
This is a Safety Class I
instrument (provided with
terminal for protective
earthing). Before applying
power, verify that the correct
safety precautions are taken
(see the following warnings).
In addition, note the external
markings on the instrument
that are described under
"Safety Symbols. 11
Warning
• Before turning on the
instrument, you must
connect the protective earth
terminal of the instrument to
the protective conductor of
the (mains) power cord. The
mains plug shall only be
inserted in a socket outlet
provided with a protective
earth contact. You must not
negate the protective action
by using an extension cord
(power cable) without a
protective conductor
(grounding). Grounding one
conductor of a
two-conductor outlet is not
sufficient protection.
• Only fuses with the
required rated current,
voltage, and specified type
(normal blow, time delay,
etc.) should be used. Do not
use repaired fuses or
short-circuited fuseholders.
To do so could cause a shock
of fire hazard.
1900 Garden of the Gods Road
Colorado Springs, CO 80901
• Service instructions are
for trained service personnel.
To avoid dangerous electric
shock, do not perform any
service unless qualified to do
so. Do not attempt internal
service or adjustment unless
another person, capable of
rendering first aid and
resuscitation, is present.
• If
you energize this
instrument by an auto
transformer (for voltage
reduction), make sure the
common terminal is
connected to the earth
terminal of the power source.
• Whenever it is likely that
the ground protection is
impaired, you must make the
instrument inoperative and
secure it against any
unintended operation.
• Do not operate the
instrument in the presence of
flammable gasses or fumes.
Operation of any electrical
instrument in such an
environment constitutes a
definite safety hazard.
• Do not install substitute
parts or perform any
unauthorized modification to
the instrument.
• Capacitors inside the
instrument may retain a
charge even if the instrument
is disconnected from its
source of supply.
• Use caution when
exposing or handling the
CRT. Handling or replacing
the CRT shall be done only
by qualified maintenance
personnel.
Safety Symbols
A
Instruction manual symbol:
the product is marked with
this symbol when it is
necessary for you to refer to
the instruction manual in
order to protect against
damage to the product.
Hazardous voltage symbol.
Earth terminal symbol: Used
to indicate a circuit common
connected to grounded
chassis.
WARNING
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
injury.
Do not proceed
beyond a Warning sign until
the indicated conditions are
fully understood and met.
CAUTION
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 all of the product. Do
not proceed beyond a
Caution symbol until the
indicated conditions are fully
understood or met.