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Calibration Manual
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• Do not use the Meter if it operates abnormally. Protection
may be impaired. When in doubt, have the Meter
serviced.
• Do not operate the Meter around explosive gas, vapor, or
dust.
• Use only 1.5 V AA batteries, properly installed in the
Meter case, to power the Meter.
• When servicing the Meter, use only specified
replacement parts.
• When using probes, keep fingers behind the finger
guards on the probes.
• Do not use the Low Pass Filter option to verify the
presence of hazardous voltages. Voltages greater than
what is indicated may be present. First, make a voltage
measurement without the filter to detect the possible
presence of hazardous voltage. Then select the filter
function.
• Only use test leads that have the same voltage, category,
and amperage ratings as the meter and that have been
approved by a safety agency.
• Use proper protective equipment, as required by local or
national authorities when working in hazardous areas.
• Comply with local and national safety requirements
when working in hazardous locations.
WCaution
To avoid possible damage to the Meter or to the equipment
under test, follow these guidelines:
• Disconnect circuit power and discharge all high-voltage
capacitors before testing resistance, continuity, diodes,
or capacitance.
• Use the proper terminals, function, and range for all
measurements.
• Do not remove batteries while the Meter is turned on or a
signal is applied to the Meter’s input jacks.
• Before measuring current, check the Meter's fuses. (See
"Testing the Fuses" in the Users Manual on the
accompanying CD.)
• Do not use the LoZ mode to measure voltages in circuits
that could be damaged by this mode’s low impedance
(≈3 kΩ). (Model 289 only)
Hazardous Voltage
To alert you to the presence of a potentially hazardous voltage, when the Meter detects a
voltage ≥30 V or a voltage overload (OL), the
Ysymbol is displayed.
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