Fluke 863 - Ohms Calibration

867B,863
Service Manual
4-26
Ohms Calibration 4-29.
Refer to Figure 4-14 for an example of the display during ohms calibration.
1. Verify that the 5700A is in Standby.
2. On the GMM, rotate the selector to
ò (Ohms), and remove the á connection.
3. Connect the 5700A directly to the Ë and â inputs on the GMM.
4. Step 17: Apply 1.9000 MΩ. Modify the value as necessary. (GMMs with version
1.1 or 1.3 software must have 2.9000 MΩ, ±0.025% applied for this step).
5. Allow for settling; then press t [Proceed].
6. Step 18: Apply 190.00 kΩ. Modify the value as necessary. Allow for settling; then
press t [Proceed].
7. Step 19: Apply 19.000 kΩ. Modify the value as necessary. Allow for settling; then
press t [Proceed].
8. Step 20: Apply 1.9000 kΩ. Modify the value as necessary. Allow for settling; then
press t [Proceed].
9. Step 21: Apply 190.00Ω. Modify the value as necessary. Allow for settling; then
press t [Proceed].
10. The following steps adjust nS (1/R); the nominal values are 100 nS and 1000 nS,
respectively. Use u [Modify value] to make adjustments. Remember to use
(1/source +Lead resistance).
a. Step 22: Apply 10.000 MΩ. Modify the value as necessary. Allow for settling;
then press t [Proceed].
b. Step 23: Apply 1.0000 MΩ. Modify the value as necessary. Allow for settling;
then press t [Proceed].
os10s.eps
Figure 4-14. Ohms Calibration