– Service personnel are trained to work
on live circuits, perform safe installa-
tions, and repair products. Only properly
trained service personnel may perform
installation and service procedures.
WARNING
Operator is responsible to maintain safe
operating conditions. To ensure safe
operating conditions, modules should not
be operated beyond the full temperature
range specified in the Environmental and
physical specification. Exceeding safe
operating conditions can result in shorter
lifespans, improper module performance
and user safety issues. When the mod-
ules are in use and operation within the
specified full temperature range is not
maintained, module surface temperatures
may exceed safe handling conditions which
can cause discomfort or burns if touched.
In the event of a module exceeding the
full temperature range, always allow the
module to cool before touching or remov-
ing modules from chassis.
Keysight products are designed for use
with electrical signals that are rated Mea-
surement Category I and Measurement
Category II, as described in the Interna-
tional Electrotechnical Commission (IEC)
Standard IEC 60664. Most measurement,
control, and data I/O signals are Measure-
ment Category I and must not be directly
connected to mains voltage or to voltage
sources with high transient over-voltages.
Measurement Category II connections
require protection for high transient over-
voltages often associated with local AC
mains connections. Assume all measure-
ment, control, and data I/O connections
are for connection to Category I sources
unless otherwise marked or described in
the user documentation.
Exercise extreme caution when a shock
hazard is present. Lethal voltage may be
present on cable connector jacks or test
fixtures. The American National Standards
Institute (ANSI) states that a shock hazard
exists when voltage levels greater than
30V RMS, 42.4V peak, or 60VDC are pres-
ent. A good safety practice is to expect
that hazardous voltage is present in any
unknown circuit before measuring.
Operators of this product must be pro-
tected from electric shock at all times.
The responsible body must ensure that
operators are prevented access and/or
insulated from every connection point. In
some cases, connections must be exposed
to potential human contact. Product
operators in these circumstances must be
trained to protect themselves from the risk
of electric shock. If the circuit is capable of
operating at or above 1000V, no conduc-
tive part of the circuit may be exposed.
Do not connect switching cards directly to
unlimited power circuits. They are in-
tended to be used with impedance-limited
sources. NEVER connect switching cards
directly to AC mains. When connecting
sources to switching cards, install protec-
tive devices to limit fault current and volt-
age to the card.
Before operating an instrument, ensure
that the line cord is connected to a proper-
ly-grounded power receptacle. Inspect the
connecting cables, test leads, and jumpers
for possible wear, cracks, or breaks before
each use.
When installing equipment where access
to the main power cord is restricted, such
as rack mounting, a separate main input
power disconnect device must be provided
in close proximity to the equipment and
within easy reach of the operator.
For maximum safety, do not touch the
product, test cables, or any other instru-
ments while power is applied to the circuit
under test. ALWAYS remove power from
the entire test system and discharge any
capacitors before: connecting or discon-
necting cables or jumpers, installing or
removing switching cards, or making inter-
nal changes, such as installing or removing
jumpers.
Do not touch any object that could provide
a current path to the common side of the
circuit under test or power line (earth)
ground. Always make measurements with
dry hands while standing on a dry, insu-
lated surface capable of withstanding the
voltage being measured.
The instrument and accessories must be
used in accordance with its specifications
and operating instructions, or the safety of
the equipment may be impaired.
Do not exceed the maximum signal levels of
the instruments and accessories, as defined
in the specifications and operating informa-
tion, and as shown on the instrument or test
fixture panels, or switching card.
When fuses are used in a product, replace
with the same type and rating for contin-
ued protection against fire hazard.
Chassis connections must only be used as
shield connections for measuring circuits,
NOT as safety earth ground connections.
If you are using a test fixture, keep the lid
closed while power is applied to the device
under test. Safe operation requires the use
of a lid interlock.
A CAUTION notice denotes a hazard. It
calls attention to an operating procedure,
practice, or the like that, if not correctly
performed or adhered to, could result in
damage to the product or loss of important
data. Do not proceed beyond a CAUTION
notice until the indicated conditions are fully
understood and met.
A WARNING notice denotes a hazard. It
calls attention to an operating procedure,
practice, or the like that, if not correctly
performed or adhered to, could result in
personal injury or death. Do not proceed be-
yond a WARNING notice until the indicated
conditions are fully understood and met.
Instrumentation and accessories shall not
be connected to humans.
Before performing any maintenance, dis-
connect the line cord and all test cables.
To maintain protection from electric shock
and fire, replacement components in mains
circuits – including the power transformer,
test leads, and input jacks – must be pur-
chased from Keysight. Standard fuses with
applicable national safety approvals may
be used if the rating and type are the same.
Other components that are not safety-relat-
ed may be purchased from other suppliers
as long as they are equivalent to the original
component (note that selected parts should
be purchased only through Keysight to
maintain accuracy and functionality of the
product). If you are unsure about the ap-
plicability of a replacement component, call
an Keysight office for information.
CAUTION
WARNING
