Perfomance Testing and Calibration
Ohms/nS Calibration
4
4-25
Ohms/nS Calibration
4-27.
Modifying the Displayed Value
4-28.
You must modify the calibration constants to compensate for the measured lead
resistance. See Figure 4-13. Change the selected digit of the displayed nominal value by
pressing
u
[Modify value],
u
[
], or
v
[
]. Select the next digit by
pressing
t
[Next Digit] and repeating the adjustment. Press
x
[Done] to end the
adjustment procedure.
For example, calibration at 190.00 ohms could proceed as follows:
•
Source = 190.0732 ohms (at output terminals)
•
Leads = 0.123 ohms
•
Altered value = source value (190.0732 ) + lead resistance (0.123) = 190.2962 ohms
The reading will appear as nominal with an arrow pointing to the digit to be adjusted.
With the GMM reading 190.00, the altered value should be rounded to 190.30. Use the
following key press sequence:
u
[Modify value]
t
[Next digit]
u
[
] (unit digit = 3)
t
[Next digit]
t
[Next digit]
t
[Next digit]
u
[
] (unit digit = 1)
x
[Done]
The nominal value for calibration has been modified.
os11s.eps
Figure 4-13. Modifying the Displayed Value
Summary of Contents for 863
Page 49: ...Maintenance Disassembly 3 3 5 OFF 1 6 Places 4 5 5 3 3 2 os5f eps Figure 3 1 Disassembly ...
Page 50: ...867B 863 Service Manual 3 6 os6f eps Figure 3 1 Disassembly cont ...
Page 52: ...867B 863 Service Manual 3 8 5 1 6 2 3 4 os30f eps Figure 3 2 Reassembly ...
Page 96: ...6 1 Chapter 6 Schematic Diagrams Title Page 6 1 A1 Main PCA Assembly 6 3 ...
Page 98: ...867B 863 Service Manual 6 4 FLUKE 867 1001 Sheet 2 of 5 Figure 6 1 A1 Main PCA cont ...
Page 99: ...Schematic Diagrams 6 6 5 FLUKE 867 1001 Sheet 3 of 5 Figure 6 1 A1 Main PCA cont ...
Page 100: ...867B 863 Service Manual 6 6 FLUKE 867 1001 Sheet 4 of 5 Figure 6 1 A1 Main PCA cont ...
Page 101: ...Schematic Diagrams 6 6 7 FLUKE 867 1001 Sheet 5 of 5 Figure 6 1 A1 Main PCA cont ...
