Keysight Technologies U1231A Guia Del Usuario página 56

2 Making Measurements
Using VZ
LOW
Set up your multimeter to make a VZ
measurement as shown in
Do not use the VZ
CAUTION
damaged by this function's low impedance (3 kΩ (nominal)).
Use the VZ
NOTE
measurements
Ghost voltages are voltages present on a circuit that should not be energized.
They are usually caused by capacitive coupling between energized wiring and
adjacent unused wiring. The VZ
your measurements by dissipating the coupling voltage. Use the VZ
to reduce the possibility of false readings in areas where the presence of ghost
voltages are suspected.
Figure 2-5
During VZ
NOTE
The analog bar graph represents the AC+DC voltage value combined.
56
for Voltage Measurements
LOW
function to remove ghost or ind uced voltages from your
LOW
VZ
LOW
measurements, the multimeter's range is locked to 600 V.
LOW
(low input impedance) voltage
LOW
Figure 2-6. Probe the test points and read the display.
function to measure voltages in circuits that could be
function can remove ghost voltages from
LOW
voltage display
Keysight U1231A, U1232A, and U1233A User's Guide
function
LOW