Safety Precautions
This product is intended for use by qualified personnel who recognize shock hazards and are familiar with the safety precau-
tions required to avoid possible injury. Read the operating information carefully before using the product.
General Definitions
The types of product users are:
Responsible body
is the individual or group responsible for the use and maintenance of equipment, and for ensuring that oper-
ators 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, 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.
This symbol on an instrument indicates that the user should refer to the operating instructions located in the manual.
This symbol on an instrument shows that it can source or measure 1000 volts or more, including the combined effect of
normal and common mode voltages. Use standard safety precautions to avoid personal contact with these voltages.
The
WARNING
heading in a manual explains dangers that might result in personal injury or death. Always read the associ-
ated information very carefully before performing the indicated procedure.
The
CAUTION
heading in explains hazards that could damage the instrument. Such damage may invalidate the warranty.
Operation
Exercise extreme caution when a shock hazard is present. Lethal voltage may be present on cable connector jacks or test Þx-
tures. 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.
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.
Do not exceed the maximum signal levels of the instruments and accessories, as deÞned in the speciÞcations and operating
information, and as shown on the instrument or test Þxture panels, or switching card.
Chassis connections must only be used as shield connections for measuring circuits, NOT as safety earth ground connections.
If using a test Þxture, keep the lid closed while power is applied to the device under test. Safe operation requires the use of a lid
interlock.
Instrumentation and accessories shall not be connected to humans.
Maintenance and Service
Inspect the connecting cables, test leads, and jumpers for possible wear, cracks, or breaks before each use.Before performing
any maintenance, disconnect the line cord and all test cables.
Cleaning
Keep the connections free of contaminants (such as dirt, oil, etc.) in order to maintain maximum insulation resistance. If the
connections become contaminated, clean them thoroughly with methanol and allow them to dry completely before use.
!