4-Wire Resistance Accuracy Test (Fai Module) - Fluke 2680A User Manual

2680A/2686A
Users Manual

4-Wire Resistance Accuracy Test (FAI Module)

1. Connect the Resistance Source to Channels 1 and 11 Remove the
Universal Input module from the instrument and connect a cable from the
Decade Resistance Source to the Universal Input module terminals for channel
1 (Sense) and channel 11 (Source) as shown in Figure 4-4. Reinstall the
Universal Input module. You may also use the 5700A resistance calibration
output instead of the Decade Resistance Source. Tables are provided for both
connections. Refer to Figure 4-5 for the 5700A 4-wire connections.
2. Configure Channel 1 for Resistance In Fluke DAQ, configure channel 1 for
Ohms 4W, 300 range.
3. Open Spy Open the Spy window under the Configuration dialog.
4. Verify Accuracy Configure the Decade Resistance Source for the output
values below and verify the Spy window measurement is between the
minimum and maximum values. Change the channel 1 range as required (see
Step 2).
Resistance Range
300 Ω
300 Ω
3 kΩ
3 kΩ
30 κΩ
300 κΩ
3 MΩ
The resistance accuracy in this table makes allowance for up to 0.01% decade resistance
tolerance.
4-28
Decade Resistor
Short Circuit (Zero)
290 Ω
Short Circuit (Zero)
2.9 kΩ
29 kΩ
290 kΩ
2.9 MΩ
Minimum Reading
0 Ω
289.81 Ω
0 Ω
2.8981 kΩ
28.981 kΩ
288.37 kΩ
2.8600 MΩ
Maximum Reading
0.1 Ω
290.19 Ω
1.0 Ω
2.9019 kΩ
29.019 kΩ
291.63 kΩ
2.9400 MΩ