described in the user documentation.
The procedures explicitly state if the
operator may perform them. Other-
wise, they should be performed only
by service personnel.
nService personnel are trained to
work on live circuits, perform safe
installations, and repair products.
Only properly trained service per-
sonnel may perform installation and
service procedures.
ARNING
Operator is responsible to maintain safe oper-
ating conditions. To ensure safe operating con-
ditions, 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 per-
formance and user safety issues. When the
modules are in use and operation within the
specified full temperature range is not main-
tained, 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 tem-
perature range, always allow the module to
cool before touching or removing modules
from chassis.
Keysight products are designed for use with
electrical signals that are rated Measurement
Category I and Measurement Category II, as
described in the International Electrotechnical
Commission (IEC) Standard IEC 60664. Most
measurement, control, and data I/O signals are
Measurement Category I and must not be dir-
ectly 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 con-
nections. Assume all measurement, 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 present. A good safety practice is to
expect that hazardous voltage is present in any
unknown circuit before measuring.
Operators of this product must be protected
from electric shock at all times. The respons-
ible body must ensure that operators are pre-
vented 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 cap-
able of operating at or above 1000V, no con-
ductive part of the circuit may be exposed.
Do not connect switching cards directly to
unlimited power circuits. They are intended to
be used with impedance-limited sources.
NEVER connect switching cards directly to AC
mains. When connecting sources to switching
cards, install protective devices to limit fault
current and voltage to the card.
Before operating an instrument, ensure that
the line cord is connected to a properly-groun-
ded 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 dis-
connect device must be provided in close prox-
imity to the equipment and within easy reach
of the operator.
For maximum safety, do not touch the
product, test cables, or any other instruments
while power is applied to the circuit under
test. ALWAYS remove power from the entire
test system and discharge any capacitors
before: connecting or disconnecting cables or
jumpers, installing or removing switching
cards, or making internal 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, insulated surface cap-
able of withstanding the voltage being meas-
ured.
The instrument and accessories must be used
in accordance with its specifications and oper-
ating instructions, or the safety of the equip-
ment may be impaired.
Do not exceed the maximum signal levels of
the instruments and accessories, as defined in
the specifications and operating information,
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 continued pro-
tection 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.
ACAUTION 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 pro-
ceed beyond a CAUTION notice until the indic-
ated conditions are fully understood and met.
A WARNING notice denotes a hazard. It calls
