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2
Making Measurements
Using Z
for Voltage Measurements (U1272A only)
LOW
Do not use the Z
CAUTION
damaged by this function's low impedance (2 kΩ (nominal)).
Use the Z
voltages from your measurements.
Ghost voltages are voltages present on a circuit that should not be energized.
Ghost voltages can be caused by capacitive coupling between energized wiring
and adjacent unused wiring.
Z
LOW
coupling voltage. Use Z
where the presence of ghost voltages are suspected.
The Z
to obtain a more accurate measurement.
1 To make a Z
2 Probe the test points and read the display. The AC voltage measurement is
68
function to measure voltages in circuits that could be
LOW
(low input impedance) function to remove ghost or induced
LOW
can remove ghost voltages from your measurements by dissipating the
function in your multimeter presents a low impedance across the leads
LOW
measurement, rotate the multimeter's rotary switch to
LOW
shown in the primary display and the DC voltage measurement is shown in the
secondary display. Press
the primary and secondary displays.
to reduce the possibility of false readings in areas
LOW
to exchange the AC and DC voltage indication on
Dual
E xit
Keysight U1271A/U1272A User's Guide
Z
.
LOW
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