Chapter 4 Calibration And Adjustment Steps - Hantek HDM3000 User Manual

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Capacitors with high power factor or other non-ideal characteristics can affect capacitance
measurements. Capacitors with a high power factor can make a difference in the
measurement when using a multimeter and some other single-frequency methods of LCR
meters. The single-frequency method can also be used to detect additional variations in
different frequencies. For example, some inexpensive capacitance replacement boxes
measured using the multimeter will have a difference of about 5% compared to the same
capacitance measured using the single-frequency method of an LCR meter. LCR meters
will display different values at different frequencies.
Capacitors with a large time constant (dielectric absorption) will slow down the
measurement stability and take several seconds to stabilize. You may find this when the
capacitor is first connected or when the measured delay time changes. In general, high
quality thin film capacitors have the lowest probability of this condition, electrolytic
capacitors have the highest probability, and ceramic capacitors generally have the
probability of this condition in between.

Chapter 4 Calibration and adjustment steps

Instructs you how to implement calibration adjustments to obtain
76

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