User Manual

True-rms Digital Multimeter

How to Make Measurements

Resistance Measurements

WCaution

To prevent damage to the Product or to the

equipment under test, disconnect the power

and discharge all high-voltage capacitors

before you measure resistance.

The Product sends a small current through the circuit to

measure resistance. Because this current flows through

all possible paths between the probes, the resistance

measurement shows the total resistance of all paths

between the probes.

The resistance ranges of the Product are 600.0 Ω,

6.000 kΩ, 60.00 kΩ, 600.0 kΩ, 6.000 MΩ, and 50.00 MΩ.

Connect the Product to the circuit as shown in Figure 5 to

measure resistance.

Some guidelines for resistance measurements are:

• The measured value of a resistor in a circuit can be

different from the resistor's rated value.

• The test leads can add 0.1 Ω to 0.2 Ω of error to

resistance measurements. To test the leads, touch

the probe tips together and read the resistance of the

leads. If necessary, you can use the relative (REL)

mode to automatically subtract this value.

• The resistance function can output a voltage that

causes a forward-bias silicon diode or transistor

junction to conduct. If this occurs, push C to

apply a lower current in the next higher range. If the

value is higher, use the higher value. Refer to the

Input Characteristics table in the specifications

section for typical short-circuit currents.