Operator`s manual

Table Of Contents
173 Signametrics
6.4 Resistance Test, 4-wire
The following procedure may be used to verify the accuracy of the 4-wire function.
1. If you have not done so, install the SMU2060/64 DMM and place the covers back on to the computer. Ensure
that the computer has been on for at least one-half hour, with the covers on, before conducting this test.
2. Connect the DMM V, + & - terminals to the calibrator HI & LO Output. Connect the DMM’s I, 4W + & -
terminals to the HI & LO Sense terminals.
3. Select the 4W function on the DMM, Autorange. Set the calibrator to 0 . Be certain that the calibrator is set
to external sense ("EX SNS" on the Fluke 5700A or “4-Wire Comp” on the 5520A). Allow the DMM to settle for
a few seconds, and perform the Relative function.
4. Apply the following Resistance values to the V, + & - terminals. Check to see that the displayed reading on
the DMM is within the indicated range.
Table 9-4 Resistance Test, 4-wire
Step Range Input Minimum Reading Maximum Reading
1
24.000000 00.000000 00.000000 00.001000
2
24.000000 10.000000 09.98200 10.001800
3
240.00000 000.00000 000.00000 000.00500
4
240.00000 100.00000 099.98800 100.01200
5
2.4000000 k 0.0000000 k 0.0000000 k 000.00003 k
6
2.4000000 k 1.0000000 k 0.9999070 k 1.0000930 k
7
24.000000 k 00.000000 k 00.000000 k 00.000350 k
8
24.000000 k 10.000000 k 09.999050 k 10.000950 k
9
240.00000 k 000.00000 k 000.00000 k 000.00500 k
10
240.00000 k 100.00000 k 099.98800 k 100.01200 k
11
2.4000000 M 0.0000000 M 0.0000000 M 0.0000700 M
12
2.4000000 M 1.0000000 M 0.9995300 M 1.0004700 M
13
24.0000 M 00.0000 M 00.0000 M 00.0006 M
14
24.0000 M 10.0000 M 00.0998 M 10.0206 M
Note 1: Some ranges apply to 2064 only. Please refer to chapter 2.0 (Specification).
Note 2: The use of 4-wire Ohms for resistance values above 300 k is not recommended.