Textron GREENLEE DM-860 Manuel D'instructions page 11

AC Bandwith
AC bandwidth of a digital multimeter (DMM) is the range of frequencies over which AC
measurements can be made within the specified accuracy. It is the frequency response of the
AC functions—not of the frequency measurement functions. A DMM cannot accurately
measure the AC value with frequency spectrums beyond the AC bandwidth of the DMM.
Therefore, wide AC bandwidth plays an important role in high performance DMMs. Complex
waveforms, noise, and distorted waveforms contain frequency components that are much
higher than the fundamental; for example, high frequency noise on a 50/60 Hz power line.
Operation
1. Set the selector according to the Settings Table and connect the test leads to the meter.
2. See Typical Measurements for illustrations of typical uses.
3. Test the unit on a known functioning circuit or component.
• If the unit does not function as expected on a known functioning circuit, replace the
battery and/or fuses.
• If the unit still does not function as expected, send the unit to Greenlee for repair. See
the address shown under Warranty.
4. Take the reading from the circuit or component to be tested.
Electric shock hazard:
Contact with live circuits can result in severe injury or death.
DM-860
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