Uut Prt 4-Wire Test - Fluke 9190A Operator's Manual

9190A
Operators Manual
5. Take resistance measurements from the reference probe input at a 2-second interval.
6. Connect the 25 Ω resistor.
7. Let readout stabilize for 70 seconds.
8. Take resistance measurements from the reference probe input at a 2-second interval.
9. Connect the 100 Ω resistor.
10. Let readout stabilize for 70 seconds.
11. Take resistance measurements from the reference probe input at a 2-second interval.
12. Connect the 200 Ω resistor.
13. Let readout stabilize for 70 seconds.
14. Take resistance measurements from the reference probe input at a 2-second interval.
15. Connect the 400 Ω resistor.
16. Let readout stabilize for 70 seconds.
17. Take resistance measurements from the reference probe input at a 2-second interval.
18. Calculate the average of the measurements taken. Record these results.
19. Calculate the error with the formula below where actual is the calibrated resistance
20. Compare the error with the specification to determine the status. Record the result.

UUT PRT 4-Wire Test

The UUT PRT 4-Wire Test is used to collect As Found and As Left data.
All Reference Accuracy Tests are to be performed in Ohms.
Perform the UUT PRT 4-Wire Test as follows:
1. Connect the 100 Ω resistor in the 4-wire UUT configuration (see Figure 4-3).
2. Set the instrument to take UUT measurements from the PRT input.
3. Set the instrument to 4-wire mode for the UUT PRT input.
4. Set the instrument conversion type for the UUT PRT input to resistance.
5. Let the readout stabilize for 20 seconds.
6. Take resistance measurements from the UUT PRT input at a 2-second interval. Take
7. Calculate the average of the measurements taken. Record these results.
4-18
Take a minimum of 40 samples.
Take a minimum of 40 samples.
Take a minimum of 40 samples.
Take a minimum of 40 samples.
Take a minimum of 40 samples.
value of the standard resistor. Record this result.
Error = Average – Actual
a minimum of 40 samples.
Note