Measurement Tutorial 7
Keysight 34420A User’s Guide 283
The noise caused by injected current can be significantly reduced by setting the
integration time of the meter (NPLC) to 1 or greater. See page 277.
Resistance Measurements
Specific resistance measurement techniques are discussed in the following
sections. You should also consider the techniques and errors discussed earlier in
this chapter.
The 4-wire ohms method provides the most accurate way to measure small
resistances. Test lead resistances and contact resistances are automatically
reduced using this method. The connections for resistance measurements are
shown below. See also “Resistance Measurement Configuration” on page 81.
Removing 2-wire Ohm Test Lead Resistance
To eliminate offset errors associated with the test lead resistance in 2-wire ohms
measurements, follow the steps below.
1 Short the ends of the test leads together. The meter displays the test lead
resistance.
2 Press from the front panel. The meter displays “0” ohms with the leads
shorted together.
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