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4.9. Low Z Voltage Measurement
• Low Z is used to check for “ghost” voltage.
• Ghost voltages are present when non-powered wires are in close
proximity to wires powered wires.
• Capacitive coupling between wires make it appear that non-powered
wires are connected to a real source of voltage.
• The Low Z setting places a load on the circuit, which greatly reduces
the voltage reading when connected to ghost voltage.
1. Set the rotary switch to the
V Lo Z
Position.
2. Momentarily press the
MODE
Button to select AC or DC voltage, the AC
“
~
” or DC “ ” symbol will appear on the LCD display.
3. Insert the black test lead banana into the
COM
Input Jack; Insert the
red test lead banana into the
Positive
Input Jack.
4. If measuring DC voltage, touch the red test lead to the positive side of
the circuit and the black test lead to the negative side of the circuit.
5. Touch the test leads to the circuit under test.
6. Read the voltage on the LCD display.
WARNING:
Observe all safety precautions when working on live live
voltages. Do not connect to circuits that exceed 600V AC/DC when the
meter is set to Low Z.
