5560A/5550A/5540A
Service Manual
56
Figure 28. Capacitance Charge Connection
The Calculated Product Output is calculated with this formula:
17. Use the appropriate conversion to convert from base units to units for the specific evaluation step.
18. With the entire table populated, evaluate each step for compliance to limits. If Guardbanding is to
be applied, create a table from the example in this manual, where the acceptance limits are
properly modified by your Guardbanding method.
Table 19. Calibration Steps for Capacitance Using Charge Method
Step
Product
Range
Product
Output
Test
Current
DMM
Measurement [V]
Calculated
Product Output
Limits
18 1.2 mF 1 mF 90 µA ±2.5 µF
19 12 mF 1.21 mF 219.9 µA ±5.7 µF
20 12 mF 10 mF 2.199 mA ±25 µF
21 120 mF 12.1 mF 5.5 mA ±84 µF
22 120 mF 100 mF 45 mA ±480 µF
Calculated Product Output = Test_current *
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