Line Frequency (Models 233 & 235 only)
Press the Hz push-button momentarily to toggle Hz function. It is only available to
Voltage and Current related ranges.
Input sensitivity varies automatically with the function range selected while activating
the Hz function. 6V function range has the highest and the 1000V range has the
lowest. When activated under DCV, ACV or VFD-ACV voltage function, the trigger
voltage range will be displayed right before starting the Hz readings. Press
momentarily the RANGE button can manually select another trigger voltage range (not
available to current ranges). It is recommended to first measure the signal voltage (or
current) level and activate Hz function in that range to get the most appropriate trigger
level. If the Hz reading becomes unstable, select lower sensitivity to avoid electrical
noise. If the reading shows zero, select higher sensitivity.
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