LCX_UserManual_en_08_1.pdf - 第52页
Measurement basics R&S ® LCX Series 52 User Manual 1 179.2260.02 ─ 08 Parameter Designation and unit G-B conductance (S) - susceptance ( Ω ) Z- Θ r impedance ( Ω ) - phase angle (rad) Z- Θ d impedance ( Ω ) - phase a…
Measurement basics
R&S
®
LCX Series
51User Manual 1179.2260.02 ─ 08
Table 5-2: Resistance measurement parameters
Parameter Designation and unit
Rs-X serial resistance (Ω) - reactance (Ω)
Rp-B parallel resistance (Ω) - susceptance (Ω)
Rdc DC current resistance (Ω) - reactance (Ω)
G-B conductance (S) - susceptance (Ω)
Z-Θr impedance (Ω) - phase angle (rad)
Z-Θd impedance (Ω) - phase angle (°)
Y-Θr admittance (S) - phase angle (rad)
Y-Θd admittance (S) - phase angle (°)
Table 5-3: Capacitor measurement parameters
Parameter Designation and unit
Cs-Q serial capacitance (F) - quality factor
Cs-D serial capacitance (F) - dissipation factor
Cs-Rs serial capacitance (F) - serial resistance (Ω)
Cp-Q parallel capacitance (F) - quality factor
Cp-D parallel capacitance (F) - dissipation factor
Cp-Rp parallel capacitance (F) - parallel resistance (Ω)
Cp-G parallel capacitance (F) - conductance (S)
G-B conductance (S) - susceptance (Ω)
Z-Θr impedance (Ω) - phase angle (rad)
Z-Θd impedance (Ω) - phase angle (°)
Y-Θr admittance (S) - phase angle (rad)
Y-Θd admittance (S) - phase angle (°)
Table 5-4: Inductor measurement parameters
Parameter Designation and unit
Ls-Q serial inductance (H) - quality factor
Ls-D serial inductance (H) - dissipation factor
Ls-Rs serial inductance (H) - serial resistance (Ω)
Lp-Q parallel inductance (H) - quality factor
Lp-D parallel inductance (H) - dissipation factor
Lp-Rp parallel inductance (H) - resistance (Ω)
Lp-G parallel inductance (H) - conductance
Rs-X serial resistance (Ω) - reactance (Ω)
Impedance measurement parameters of the R&S LCX
Measurement basics
R&S
®
LCX Series
52User Manual 1179.2260.02 ─ 08
Parameter Designation and unit
G-B conductance (S) - susceptance (Ω)
Z-Θr impedance (Ω) - phase angle (rad)
Z-Θd impedance (Ω) - phase angle (°)
Y-Θr admittance (S) - phase angle (rad)
Y-Θd admittance (S) - phase angle (°)
Table 5-5: Transformer measurement parameters
Parameter Designation and unit
M-ΘNd mutual inductance (H) - phase angle (°)
N-ΘNd transformer ratio / turns ratio - phase angle (°) (phase difference
between primary and secondary winding)
Rs-X serial resistance (Ω) - reactance (Ω)
G-B conductance (S) - susceptance (Ω)
Z-Θr impedance (Ω) - phase angle (rad)
Z-Θd impedance (Ω) - phase angle (°)
Y-Θr admittance (S) - phase angle (rad)
Y-Θd admittance (S) - phase angle (°)
5.3 Considerations on measurement accuracy
To know the measurement accuracy of a, e.g. capacitance measurement, the accuracy
and characteristics of the instrument are essential.
An R&S LCX LCR meter measures the impedance (Z) and phase (Θ), and derives the
results of the also provided measurement parameters. The accuracy of a determined
parameter therefore refers to the accuracy of these measured parameters.
During a measurement, the R&S LCX displays the accuracy of (Z) and (Θ) at the cur-
rent working point in the Test signal monitor on the screen.
If you need to know the accuracy outside a running measurement or for a secondary
measurement parameter, you can calculate the accuracy individually.
How to:
●
see the application note "LCX accuracy calculations" on the product page
www.rohde-schwarz.com/application/lcx.
The application note guides you how to proceed in general, and how to determine
the value for specific sample components.
●
see the specifications document on the product page www.rohde-schwarz.com/
brochure-datasheet/lcx). The specifications document provides the formulas and
the instrument-specific calculation factors.
Considerations on measurement accuracy
Measurement setups
R&S
®
LCX Series
53User Manual 1179.2260.02 ─ 08
6 Measurement setups
Measuring components requires the use of suitable measurement adapters, referred to
as test fixtures.
6.1 About test fixtures
Test fixtures provide precise measurements of electronic components, such as passive
components, either with lead wires or SMD modules. They are designed to hold or
directly connect the measurement samples.
Frequency range
Some of the test fixtures are limited in frequency range. For details on the specifica-
tions, see the specifications document, section "Specifications" > "Options".
● Test fixture for axial/radial lead type components................................................... 53
● Kelvin clip lead........................................................................................................ 54
● Test fixture for SMD components............................................................................55
● Test tweezers for SMD components....................................................................... 56
● Test fixture with cables for transformer components...............................................57
● BNC-to-BNC extension........................................................................................... 58
6.1.1 Test fixture for axial/radial lead type components
This test fixture R&S LCX-Z1 is a 4-terminal THT (through hole) test fixture for mea-
surements of both, axial or radial wired components.
About test fixtures