Keysight U1271A Guia Del Usuario página 71

Measuring Resistance
To avoid possible damage to your multimeter or to the equipment under
CAUTION
test, disconnect the circuit power and discharge all high-voltage capacitors
before measuring resistance.
Resistance (opposition to the current flow) is measured by sending a small current
out through the test leads to the circuit under test. Because this current flows
through all possible paths between the leads, the resistance reading represents
the total resistance of all paths between the leads. Resistance is measured in
ohms (Ω).
1 To measure resistance, set the multimeter's rotary switch to
2 Probe the test points and read the display.
Figure 2-13
Keep the following in mind when measuring resistance.
– The test leads can add 0.1 Ω to 0.2 Ω of error to resistance measurements. To
– Because the multimeter's test current flows through all possible paths
Keysight U1271A/U1272A User's Guide
up your multimeter as shown in
Resistance display
test the leads, touch the probe tips together and read the resistance of the
leads. To remove lead resistance from the measurement, hold the test lead tips
together and press
subtracted from all future display readings.
between the probe tips, the measured value of a resistor in a circuit is often
different from the resistor's rated value.
Figure 2-14.
. Now the resistance at the probe tips will be
Making Measurements
/
Smart
2
and set
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