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U1273A Handheld Digital Multimeter
Performing Measurements and Tests
LPF measurements:
• Passing the measured signal through a LPF help blocks
unwanted voltages such as electronic noise.
• Use the LPF function to improve measurement on compos-
ite sine waves that are typically generated by inverters and
variable frequency motor drives.
Z
LOW
• Use the Z
ghost or induced voltages from your measurement.
• Z
LOW
by dissipating the coupling voltage. Use Z
possibility of false readings in areas where the presence of
ghost voltages are suspected.
8
measurements:
(low input impedance) function to remove
LOW
can remove ghost voltages from your measurements
Press
while performing ac
voltage measurements to pass the
measured signal through a low pass
filter.
Rotate the rotary switch's position to
Z
LOW
to enable low impedance mea-
surements.
U1273A Quick Start Guide
to reduce the
LOW
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