Amprobe AM-270 Industrial-Multimeter - Manual (Page 11)

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Note: Input sensitivity varies automatically with function range selected before
activating the Hz function. mV function has the highest (300mV) and the
1000V range has the lowest (300V). It is recommended to first measure the
signal voltage (or current) level then activate the Hz function in that voltage
(or current) range to automatically set the most appropriate trigger level. You
can also press the RANGE button momentarily to select another trigger level
manually. If the Hz reading becomes unstable, select lower sensitivity to avoid
electrical noise. If the reading shows zero, select higher sensitivity.
Capacitance, Diode Test Function
Default at . Press SELECT button momentarily to select Diode test
function.
� CAUTION
Discharge capacitors before making any measurement. Large value
capacitors should be discharged through an appropriate resistance load.