Fluke Calibration 5322A, Calibration Manual

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5322A
Calibration Manual
56
Leakage Current Adjustment
This process checks the internal rms ammeter. Adjustment is only for the dc signal.
To make this adjustment, see
Figure 30 :
1. Connect the 5522A to the Product.
2. Push the
Setup softkey on the Product.
3. Highlight Calibration and push the Select softkey.
4. From the calibration menu, highlight Leakage Current and push the Select softkey. The list
of the adjustment points shows in this format, see Table 13 :
ID Ixx nominal ammeter range
where ID is the symbol of the function
Ixx is the ordinal number of the range
Table 13. Leakage Current Adjustment Points
5. Select the first position with the nominal value of 0.25 mA. The Product shows the actual
measured current.
6. Set the dc current on the Product to 0.25 mA. Push the ON button on the 5522A. The
Product reads approximately 0.25 mA.
7. Use the cursor buttons or rotary knob to adjust the value to 250.00 μ A.
8. Push the Write softkey to save the new value for the 0.3 mA current range. To leave the
original value, push the Exit softkey. The Product ignores the measured current and returns
to list of current ranges.
9. Go through and adjust all ranges in the table.
10. Push the Exit softkey until the Low resistance source function shows.
This completes this part of the adjustment.
Note
During adjustment, the internal ammeter connects to the OUTPUT HI-LO terminals.
The ammeter is not protected against voltage overloads. Do not exceed the maximum
current values on particular ranges.
Nominal Current
Range
Position Adjustment Point
Required Accuracy of
Adjustment
0.3 mA dc I01 0.25 mA 0.05 %
3 mA dc I02 2.5 mA 0.05 %
30 mA dc I03 25 mA 0.05 %