Keysight U1242C Service Manual

Also see for U1241C: Quick start guide User guide Quick start guide

Contents

Keysight U1242C Service Manual Manual pdf 4 page image

4 Keysight U1241C/U1242C Service GuideSafety ConsiderationsRead the information below before using this instrument.The following general safety precautions must be observed during all phases ofoperation, service, and repair of this instrument. Failure to comply with theseprecautions or with specific warnings elsewhere in this manual violates safetystandards for design, manufacture, and intended use of the instrument. KeysightTechnologies assumes no liability for the customer’s failure to comply with theserequirements.WARNING – Do not exceed any of the measurement limits defined in the specificationsto avoid instrument damage and the risk of electric shock.– Do not use the multimeter if it is damaged. Before you use themultimeter, inspect the case. Look for cracks or missing plastic. Payparticular attention to the insulation surrounding the connectors.– Inspect the test leads for damaged insulation or exposed metal. Checkthe test leads for continuity. Replace damaged test leads before you usethe multimeter.– Do not operate the multimeter around explosive gas, vapor, or wetenvironments.– Do not apply more than the rated voltage (as marked on the multimeter)between terminals, or between terminal and earth ground.– Never use the multimeter in wet conditions or when there is water on thesurface. If the multimeter is wet, ensure that the multimeter is dried onlyby trained personnel.– Before use, verify the multimeter’s operation by measuring a knownvoltage.– When measuring current, turn off the circuit power before connecting themultimeter in the circuit. Remember to place the multimeter in serieswith the circuit.– When servicing the multimeter, use only the specified replacement parts.– Use caution when working above 60 V DC, 30 V AC rms, or 42.4 V peak.Such voltages pose a shock hazard.