Safety Precautions
______________________________________
The following safety precautions should be observed before using
this product and any associated instrumentation. Although some
instruments and accessories would normally be used with non-
hazardous voltages, there are situations where hazardous
conditions may be present.
This product is intended for use by qualified personnel who
recognize shock hazards and are familiar with the safety
precautions required to avoid possible injury. Read and follow all
installation, operation, and maintenance information carefully
before using the product. Refer to the manual for complete
product specifications.
If the product is used in a manner not specified, the protection
provided by the product may be impaired.
The types of product users are:
Responsible body
is the individual or group responsible for the
use and maintenance of equipment, for ensuring that the
equipment is operated within its specifications and operating
limits, and for ensuring that operators are adequately trained.
Operators
use the product for its intended function. They must
be trained in electrical safety procedures and proper use of the
instrument. They must be protected from electric shock and
contact with hazardous live circuits.
Maintenance personnel
perform routine procedures on the
product to keep it operating properly, for example, setting the line
voltage or replacing consumable materials. Maintenance
procedures are described in the manual. The procedures explicitly
state if the operator may perform them. Otherwise, they should be
performed only by service personnel.
Service personnel
are trained to work on live circuits, and
perform safe installations and repairs of products. Only properly
trained service personnel may perform installation and service
procedures.
Keithley 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 directly
connected to mains voltage or to voltage sources with high
transient overvoltages. Measurement Category II connections
require protection for high transient over-voltages often
associated with local AC mains connections. Assume all
measurement, control, and data I/O connections are for
connection to Category I sources unless otherwise marked or
described in the Manual.
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 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 1000 volts,
no conductive
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, make sure the line cord is
connected to a properly 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 (for instance, 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 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 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
