40 U1253B User’s and Service Guide
2 Making Measurements
Measuring Resistance, Conductance, and Testing Continuity
Set up the multimeter to measure resistance as shown in
Figure 2- 8. Then probe the test points (by shunting the
resistor) and read the display.
Smart Ω
Using the offset compensation method, Smart Ω removes
unexpected DC voltages within instrument, at the input, or
the circuit being measured, which will add error to
resistance measurement. Besides, it also displays the bias
voltage or leakage current (calculated based on bias voltage
and corrected resistance value) on the secondary display.
With offset compensation method, the multimeter takes the
difference between two resistance measurements when two
different test currents are applied to determine any offset
voltage in the input circuitry. The resultant displayed
measurement corrects this offset, giving a more accurate
resistance measurement.
Disconnect circuit power and discharge all high-voltage capacitors
before measuring resistance or conductance, or testing circuit
continuity, to avoid damaging the multimeter or the device under test.
Press to scroll through audible continuity test ( or ,
depending on Setup configuration), conductance measurement ( ),
and resistance measurement ( , , or ) as shown in
Figure 2-9 on page 43.
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