How are the various quantities measured?
100,000 cts digital multimeters 41
How are the various quantities measured? (continued)
The multimeter has a low-pass AC filter that blocks voltages or currents at
undesirable frequencies.
The MLI filter is activated as follows:
Setup Measurement Filter YES: a symbol then appears on the screen.
Icon: filter programmed
The multimeter continues the measurements
in the chosen mode, AC, AC+DC, or VlowZ,
but the signal goes through a filter that
blocks undesirable voltages >300Hz.
The low-pass filter improves measurement
performance on the composite sinusoidal
signals often generated by inverters and
variable-speed motors.
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