Fluke 725Ex - Cal Ohms Hi Source

Multifunction Process Calibrator
Calibration Adjustment Procedures
37
Cal Ohms Hi Source
Connect the UUT as shown in Figure 20.
aal13f.eps
Figure 20. Ohms Hi Source Calibration Connections
From the Calibration Menu, enter the cal step for Cal Ohms Hi Source. The PC displays:
2500 into DAC. Enter Ohms displayed :
Set the HP 3458 to read 4-terminal Ohms. Be sure the NPLC on the HP 3458 is slow
enough to get stable readings. When the reading on the HP 3458 has stabilized, enter the
value in Ohms on the PC, then press Enter. After a short while, the PC displays:
Max value into DAC. Enter Ohms value displayed :
Enter the resistance reading from the HP 3458 in the PC, then press Enter. After a short
while, the PC displays the following calibration constants and new prompt:
0.050685 = 3309.000015 - 0.365000 )/ 65279.00 Ohms per count = 0.050685
- press space bar to continue
Press the space bar to return to the Calibration Menu.