EUCOL U2810D, Руководство по эксплуатации, Страница: 38 / 43

6-32
Chapter 6 The Specifications
The complete U2810D specifications are listed below. These specifications are the
performance standards. When shipped from the factory, the U2810D meets the
specifications listed in this section.
6.1
Measurement Functions
1. Primary measurement parameters
„
L: Inductance
„ C: Capacitance
„ R: Resistance
„ |Z|: Absolute value of impedance
2. Secondary measurement parameters
„ D: Dissipation
„ Q: Quality
„
θ
: Phase angle
„ X : Reactance
„
ESR: Series equivalent resistance
3. Combinations of measurement parameters
„ L-Q
„ C-D
„ R-Q
„ Z-Q
6.2
Equivalent Measurement Circuit
„ SER: Series equivalent circuit
„ PAR: Parallel equivalent circuit
The actual capacitor, resistor and inductor are not the ideal capacitor, resistor and inductor.
Normally, a component has the characteristics of the resister and the reactor at the same
time. The actual component is composed of an ideal resistor and a reactor (ideal inductor or
capacitor) in series or parallel equivalent circuits.
The value in the two different equivalent circuits can be converted to each other using the
following formulas in Table 6-1. The values of L and C in two different equivalent circuits are
different due to the quality factor Q (or the dissipation factor D). But D and Q always have
the same value in both equivalent circuit modes.