Safety precautions
Observe the following safety precautions before using this product and any associated in-
strumentation. Although some instruments and accessories would normally be used with
nonhazardous voltages, there are situations where hazardous conditions may be present.
This product is intended for use by qualifi ed 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 user documentation for complete product specifi cations.
If the product is used in a manner not specifi ed, the protection provided by the product
warranty may be impaired.
The types of product users are:
Responsible body is the individual or group responsible for use and maintenance of
equipment, for ensuring that the equipment is operated within its specifi cations 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 operat-
ing properly, for example, setting the line voltage or replacing consumable materials.
Maintenance procedures are described in the user documentation. 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, perform safe installations, and
repair products. Only properly trained service personnel may perform installation and
service procedures.
Keithley Instruments products are designed for use with electrical signals that are
measurement, control, and data I/O connections, with low transient overvoltages and
must not be directly connected to mains voltage or to voltage sources with high transient
overvoltages. Measurement Category II (as referenced in IEC 60664) connections
require protection for high transient overvoltages often associated with local AC mains
connections. Certain Keithley measuring instruments may be connected to mains. These
instruments will be marked as category II or higher.
Unless explicitly allowed in the specifi cations, operating manual, and instrument labels, do
not connect any instrument to mains.
Exercise extreme caution when a shock hazard is present. Lethal voltage may be present
on cable connector jacks or test fi xtures. The American National Standards Institute
(ANSI) states that a shock hazard exists when voltage levels greater than 30 V
RMS
,
42.4 V
PEAK
, or 60 V DC 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 V,
no conductive part of the circuit may be exposed.
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