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Ground Resistance Tester Model 6471
5.3 Resistance Measurement mΩ (4-Wire)
This measurement is used to improve the resolution (10x better than the 2-Wire
measurement) for weak resistance values.
To perform a 4-Wire measurement:
Press Hz/OPTIONS
(AUTO will blink)
Press Hz/OPTIONS once again
(H and E will blink)
Press ►
(H, S, ES and E will all blink)
Conrm choice by pressing
Hz/OPTIONS again
WARNING: Before performing the resistance test, verify that the sample
under test is not energized.
1. Set the switch to
.
2. Connect the resistance to all 4 terminals.
R
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