Agilent 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) Standard
IEC 60664. Most measurement, control, and
data I/O signals are Measurement 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 asso-
ciated with local AC mains connections.
Assume all measurement, control, and data
I/O connections are for connection to Cat-
egory I sources unless otherwise marked or
described in the user documentation.
Exercise extreme caution when a shock haz-
ard 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 respon-
sible body must ensure that operators are
prevented access and/or insulated from
every connection point. In some cases, con-
nections 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 conductive part of the cir-
cuit 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-
grounded power receptacle. Inspect the con-
necting 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 prod-
uct, 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 cir-
cuit under test or power line (earth) ground.
Always make measurements with dry hands
while standing on a dry, insulated 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 infor-
mation, 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
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 pro-
cedure, practice, or the like that, if not
correctly performed or adhered to, could
result in personal injury or death. Do not
proceed beyond a WARNING notice until
the indicated conditions are fully under-
stood 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 Agilent. Standard fuses with
applicable national safety approvals may be
used if the rating and type are the same.
Other components that are not safety-
related may be purchased from other sup-
pliers as long as they are equivalent to the
original component (note that selected parts
should be purchased only through Agilent to
maintain accuracy and functionality of the
product). If you are unsure about the appli-
cability of a replacement component, call an
Agilent office for information.
No operator serviceable parts inside.
Refer servicing to qualified personnel. To
prevent electrical shock do not remove
covers. For continued protection against
fire hazard, replace fuse with same type
and rating.
