Application Tutorial 3
Keysight U3402A User’s and Service Guide 73
Measure Resistance Using 4-Wire Mode
1 Connect the red and black test leads to the resistor and probe the test points 
as shown in Figure 3-6.
Figure 3-6 Terminal connection when measuring resistance using 4-wire 
mode
2 Press   to select the 4-wire Ω measurement for primary display. The 4W 
is displayed.
3 Press . Use 
 and   to select autoranging or manual ranging for 
primary display.
Do not apply voltage exceeding 250 V PEAK between Sense Hi and Sense Lo 
terminals, and 500 V PEAK between V.Ω.Hz and Lo input terminals.