Keysight U1241AN, User'S And Service Manual

Page: 5 / 85

Keysight U1241AN User’s and Service Guide 5
WARNING
– Inspect the test probes for damaged insulation or exposed metal, and
check for continuity. Do not use the test probe if it is damaged.
– To avoid arc explosion, make sure that the probe tip and probe tip
accessories are rated for the measurement environment. CAT II and CAT III
accessories must not be used in a CAT IV environment.
– Do not use repaired fuses or short-circuited fuse-holders. For continued
protection against fire, replace the line fuses only with fuses of the same
voltage and current rating and recommended type.
– Do not service or perform adjustments alone. Under certain condition,
hazardous voltages may exist, even with the equipment switched off. To
avoid dangerous electric shock, service personnel must not attempt
internal service or adjustment unless another person, capable of
rendering resuscitation or first aid, is present.
–
Do not substitute parts or modify equipment to avoid the danger of
introducing additional hazards. Return the product to Keysight Sales Office
for service and repair to ensure the safety features are maintained.
– Do not operate damaged equipment as the safety protection features
built into this product may have been impaired, either through physical
damage, excessive moisture, or any other reason. Remove power and do
not use the product until safe operation can be verified by service-trained
personnel. If necessary, return the product to Keysight Technologies
Sales and Service Office for service and repair to ensure the safety
features are maintained.
CAUTION
– Power off circuit power and discharge all high-voltage capacitors in the
circuit before you perform resistance and capacitance measurements or
continuity and diode tests.
– Use the correct terminals, function, and range for your measurements.
– Never measure voltage when current measurement is selected.
– Ensure proper insertion of battery in the multimeter, and follow the
correct polarity.