Keysight M9380A, Startup Manual

Page: 3 / 40

Maintenance procedures are described
in the user documentation. The pro-
cedures explicitly state if the operator
may perform them. Otherwise, they
should be performed only by service
personnel.
n
Service personnel are trained to work
on live circuits, perform safe install-
ations, and repair products. Only prop-
erly trained service personnel may
perform installation and service pro-
cedures.
. ARNING
Operator is responsible to maintain safe
operating conditions. To ensure safe oper-
ating conditions, modules should not be
operated beyond the full temperature
range specified in the Environmental and
physical specification. Exceeding safe oper-
ating conditions can result in shorter
lifespans, improper module performance
and user safety issues. When the modules
are in use and operation within the spe-
cified 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
temperature range, always allow the mod-
ule to cool before touching or removing
modules from the chassis.
Keysight products are designed for use
with electrical signals that are rated Meas-
urement Category I and Measurement Cat-
egory II, as described in the International
Electrotechnical Commission (IEC) Stand-
ard IEC 60664. Most measurement, con-
trol, and data I/O signals are Measurement
Category I and must not be directly con-
nected 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 meas-
urement, control, and data I/O con-
nections 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
proximity 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.
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