Precision LCR-8101 User Manual

Precision LCR Meter

LCR-8101

USER MANUAL

GW INSTEK PART NO. 82DS-22040M

This manual contains proprietary information, which is protected by copyrights. All rights are reserved. No part of this manual may be photocopied, reproduced or translated to another language without prior written consent of Good Will company.

The information in this manual was correct at the time of printing. However, Good Will continues to improve products and reserves the rights to change specification, equipment, and maintenance

ISO-9001 CERTIFIED MANUFACTURER

procedures at any time without notice.

Good Will Instrument Co., Ltd. No. 7-1, Jhongsing Rd., Tucheng City, Taipei County 236, Taiwan.

TABLE OF CONTENTS

Table of Contents

SAFETY INSTRUCTION ..................................................... 5

GETTING STARTED........................................................... 9

Main Features...................................... 10

Measurement Type............................... 11

Front Panel Overview........................... 12

Rear Panel Overview ............................15

Tilt Stand & Power Up ......................... 16

Fixture Connection............................... 19

Tutorials (Step by Step Operations) ..... 21

Measurement tip.................................. 28

BASIC MEASUREMENT ................................................... 30

Measurement Item Description ........... 31

Measurement Mode Overview.............. 41

Parameter Configuration...................... 44

Running Measurement......................... 49

LCR-8101 User Manual

REMOTE CONTROL ........................................................ 29H94

Interface Configuration ........................ 30H95

Command Syntax ................................. 31H98

Command Set ......................................32H99

CALIBRATION................................................................33H105

FAQ ...............................................................................34H109

APPENDIX .....................................................................35H110

Fuse Replacement.............................. 36H110

|Z| Accuracy Chart.............................. 37H111

|Z| vs L, C Chart ................................. 38H112

Accuracy Definition ............................ 39H113

Specification ...................................... 40H114

Declaration of Conformity.................. 41H115

INDEX............................................................................42H116

PASS-FAIL MODE............................................................ 52

Single-Step Test Configuration............. 53

Single-Step Test Run ............................ 58

Multi-Step Test Configuration .............. 61

Multi-Step Program Run ......................21H69

Multi-Step Program File Operation ...... 22H71

GRAPH MODE ................................................................ 23H75

Item Selection...................................... 24H76

Horizontal Scale Setting ......................25H78

Vertical Scale Setting ........................... 26H82

Speed / Step Setting ............................ 27H89

Running Graph Measurement .............. 28H90

SAFETY INSTRUCTION

This chapter contains important safety instructions that you must follow when operating LCR-8101 and when keeping it in storage. Read the following before any operation to insure your safety and to keep the best condition for LCR-8101.

Safety Symbols

These safety symbols may appear in this manual or on LCR-8101.

WARNING

CAUTION

Warning: Identifies conditions or practices that could result in injury or loss of life.

Caution: Identifies conditions or practices that could result in damage to LCR-8101 or to other properties.

DANGER High Voltage

Attention Refer to the Manual

Protective Conductor Terminal

Earth (ground) Terminal

LCR-8101 User Manual

Safety Guidelines

General Guideline

CAUTION

Power Supply

WARNING

Fuse

WARNING

• Do not place any heavy object on LCR-8101.

• Avoid severe impacts or rough handling that

leads to damaging LCR-8101.

• Do not discharge static electricity to LCR-8101.

• Do not block or obstruct the cooling fan vent

opening.

• Do not perform measurement at circuits directly

connected to Mains (Note below).

• Do not disassemble LCR-8101 unless you are

qualified as service personnel.

(Measurement categories) EN 61010-1:2001 specifies the measurement categories and their requirements as follows. LCR8101 falls under category I.

• Measurement category IV is for measurement performed at the

source of low-voltage installation.

• Measurement category III is for measurement performed in the

building installation.

• Measurement category II is for measurement performed on the

circuits directly connected to the low voltage installation.

• Measurement category I is for measurements performed on

circuits not directly connected to Mains.

• AC Input voltage: 115V/230V, 50/60Hz

• The power supply voltage should not fluctuate

more than 10%.

• Connect the protective grounding conductor of

the AC power cord to an earth ground, to avoid electrical shock.

• Fuse type: T3A/250V

• Make sure the correct type of fuse is installed

before power up.

SAFETY INSTRUCTION

LCR-8101 User Manual

Cleaning LCR8101

Operation Environment

Storage environment

• To ensure fire protection, replace the fuse only

with the specified type and rating.

• Disconnect the power cord before fuse

replacement.

• Make sure the cause of fuse blowout is fixed

before fuse replacement.

• Disconnect the power cord before cleaning.

• Use a soft cloth dampened in a solution of mild

detergent and water. Do not spray any liquid.

• Do not use chemical or cleaner containing harsh

material such as benzene, toluene, xylene, and acetone.

• Location: Indoor, no direct sunlight, dust free,

almost non-conductive pollution (Note below)

• Relative Humidity: < 80%

• Altitude: < 2000m

• Temperature: 0°C to 40°C

(Pollution Degree) EN 61010-1:2001 specifies the pollution degrees and their requirements as follows. LCR-8101 falls under degree 2.

Pollution refers to “addition of foreign matter, solid, liquid, or gaseous (ionized gases), that may produce a reduction of dielectric strength or surface resistivity”.

• Pollution degree 1: No pollution or only dry, non-conductive

pollution occurs. The pollution has no influence.

• Pollution degree 2: Normally only non-conductive pollution

occurs. Occasionally, however, a temporary conductivity caused by condensation must be expected.

• Pollution degree 3: Conductive pollution occurs, or dry, non-

conductive pollution occurs which becomes conductive due to condensation which is expected. In such conditions, equipment is normally protected against exposure to direct sunlight, precipitation, and full wind pressure, but neither temperature nor humidity is controlled.

• Location: Indoor

• Relative Humidity: < 80%

• Temperature: −40°C to 70°C

Power cord for the United Kingdom

When using LCR-8101 in the United Kingdom, make sure the power cord meets the following safety instructions.

NOTE: This lead/appliance must only be wired by competent persons

WARNING: THIS APPLIANCE MUST BE EARTHED

IMPORTANT: The wires in this lead are coloured in accordance with the following code:

Green/ Yellow: Earth

Blue: Neutral

Brown: Live (Phase)

As the colours of the wires in main leads may not correspond with the colours marking identified in your plug/appliance, proceed as follows:

The wire which is coloured Green & Yellow must be connected to the Earth terminal marked with the letter E or by the earth symbol

coloured Green or Green & Yellow.

The wire which is coloured Blue must be connected to the terminal which is marked with the letter N or coloured Blue or Black.

The wire which is coloured Brown must be connected to the terminal marked with the letter L or P or coloured Brown or Red.

If in doubt, consult the instructions provided with the equipment or contact the supplier.

This cable/appliance should be protected by a suitably rated and approved HBC mains fuse: refer to the rating information on the equipment and/or user instructions for details. As a guide, cable of

0.75mm2 should be protected by a 3A or 5A fuse. Larger conductors would normally require 13A types, depending on the connection method used.

Any moulded mains connector that requires removal /replacement must be destroyed by removal of any fuse & fuse carrier and disposed of immediately, as a plug with bared wires is hazardous if a engaged in live socket. Any re-wiring must be carried out in accordance with the information detailed on this label.

GETTING STARTED

This chapter describes LCR-8101 in a nutshell, including its main features, front / rear panel appearance, and power up sequence. Use the Tutorial section for a quick access to the main functionalities, step by step.

Main Features Main Features ................................................. 10

Measurement item

Panel overview Front Panel Overview ...................................... 12

Tilt stand / Power up

Fixture connection

Tutorial Basic measurement (without Pass/Fail test)....21

Measurement item.......................................... 11

Measurement combination .............................

Rear Panel Overview .......................................

Tilt stand ........................................................ 16

Power up.........................................................

Select AC mains frequency (50/60Hz) .............

Fixture structure ............................................. 19

Fixture connection ..........................................

Pass/Fail test (Single step) .............................

Pass/Fail test (Multiple step) ..........................

Graph mode....................................................

LCR-8101 User Manual

Main Features

Performance

Operation

Interface

• 20Hz ~ 1MHz wide test frequency

• 6 digit measurement resolution

• 10mV ~ 2V measurement drive level

• 0.1% basic measurement accuracy

• Spot frequency measurement

• Multi-step measurement, maximum 64

programs with up to 30 steps each

• Actual measurement value display

• Measurement in absolute value or percentage

difference from the nominal value

• Pass/Fail test

• Precision fixture with four-wire + ground

connection

• Fixture trimming, open and closed connection

• Bar display mode for easy adjustment of

variable components

• Graph mode for visual representation of

measurement data

• Retains panel setup after power-Off

• Large LCD display, 320x240 resolution

• Intuitive user interface, comprehensive

measurement functions

• GPIB

• RS-232C

Measurement tip Measurement tip............................................. 28

GETTING STARTED

LCR-8101 User Manual

Measurement Type

Measurement item

Primary measurement

Secondary measurement

Measurement combination

:Available, :Not available

1st measurement 2nd measurement Circuit model Graph Prog

Q D R

Capacitance (C)

Inductance (L)

Reactance (X)

Susceptance (B)

Impedance (Z)

Admittance (Y)

DC Resistance(RDC)

Quality factor (Q)

Dissipation factor (D)

AC Resistance (RAC)

Conductance (G)

Angle (θ)

*Prog: Multi-step program

Capacitance (C) Inductance (L)

Reactance (X) Susceptance (B) (=1/X)

Impedance (R) Admittance (Y) (=1/Z)

DC Resistance (R

AC Resistance (R

)

) Quality factor (Q)(=1/D)

Dissipation factor (D) Angle (θ) (for Z and Y)

AC G Angle Series

Parallel

Front Panel Overview

Main Display

Main display

Function keys

Local key

Function Keys

LCR-8101

Local Key

Power Switch

Menu Key

Precision LCR Meter

DC , 20 1M Hz

Current Return

320 by 240, DST LCD display.

Local

Menu key

Single/Repetitive key

Sing/Rep

Single/ Repetitive Key

Assigned to the menu on the right side of the display.

Calibration Key

D / Q

Local

Low Potential

V / A



Code

Clear

Enter

DISCHARGE TEST DEVICE BEFORE CONNECTING

FORCELSENSEHSENSEHFORCE

Trig

∝

High Potential

Unit Keys

When the instrument is under remote control mode, sets the instrument back into local panel operation. For remote control details, see page

94.

Shows the main menu on the display.

Selects Single measurement mode (manual triggering) or Repetitive measurement mode (automatic triggering). See page

49 for details.

Trigger Key

Arrow Keys

Code Key

Clear Key

Enter Key

Numerical Keys

Current Out

GETTING STARTED

LCR-8101 User Manual

Calibration key

Unit keys

Trigger key

Calibration

Enters the calibration mode. See page

105 for calibration details.

Enters unit when editing values.

D/Q

V/A

Ω

Dissipation factor or Quality factor

Voltage or Ampere

Henry (for Inductance)

Farad (for Capacitance)

Ohm (for Resistance, Impedance)

Siemens (for Susceptance, Admittance)

Kilo (10

)

Pico (10

–12

)

Micro (10

–6

)

Trig

Manually triggers measurement. Available only in Single measurement mode (page

Mega (10

Nano (10

Milli (10

49).

Enter key

Numerical keys

Enter

Confirms the entered value or selection.

Enters numeric values.

Measurement terminals

LFORCE

LSENSE

HSENSE

HFORCE

)

-9

)

–3

)

Accepts measurement fixture. For connection details, see page

19.

Current return

Low potential

High potential

Current output

FORCE

SENSE

FORCE

Power switch

Turns On

or Off the main power. For power up sequence, see page

17.

Arrow keys

Selects menu items or parameters. The Up/Down and Left/Right keys are used in pairs.

Code key

Clear key

Code

Clear

Enters system codes for changing drive Voltage/Current display (page

51) or frequency adjustment

resolution (page

46).

Clears all previous entries when editing values.

GETTING STARTED

LCR-8101 User Manual

Rear Panel Overview

GPIB Port

SER.NO. LABEL

GPIB port / RS-232C port

RS-232C Port

GPIB

RS232

Display Contrast Knob

RS232

WARNING

Voltage Selector

Fuse Holder

AC 115 / 230V 50 / 60Hz FUSE 250V T 3A

Accepts remote control cables.

GPIB: 24-pin female

RS-232C: DB-9 pin male

See page details.

94 for remote control

115V

Mains Socket

Tilt Stand & Power Up

Tilt stand

Low angle

High angle

Display contrast knob

Voltage selector / Fuse holder / Mains socket

Sets the display contrast level. See page

17 for details.

115V

Voltage selector sets the AC mains Voltage, 115V or 230V.

Fuse holder contains the main fuse, T3A/250V. For fuse replacement details, see page

110.

Mains socket accepts power cable. See page

17 for power-up details.

GETTING STARTED

LCR-8101 User Manual

Power up

Panel operation

1. Set the rear panel

115V

230V

Voltage selector to the correct position according to the AC mains voltage.

115V

230V

2. Connect the power

cord to the socket.

3. Turn On the power

switch. The display becomes active in 2~3

seconds.

4. Use the contrast knob on the rear panel to

adjust the LCD display brightness.

Select AC mains frequency (50/60Hz)

Background

Although LCR-8101 works under both 50 and 60Hz power frequencies, we recommend selecting the frequency that matches the local setting to get the best measurement precision, especially at

Panel operation

lower frequencies (< 100Hz).

1. Press the Menu key, then F5

(System). The system menu appears.

Precision LCR Meter LCR-8101

Software version 2.00 Jan 20 2007

Frequency

1MHz RS-232 Graph mode GPIB

Line frequency Beep GPIB address

50Hz

::OFF

53.388fF

50mVac 1.5000kHz

Range Speed Med

Counterclockwise: Dark

MEASUREMENT MODE

0.01234

–

0.2179nSD

HiLo+1.00%

–1.00%

Vm:549.8mV

Auto

Im:724.9pA

C LXBZY

Q DRG

Parallel

Hide Scale

Abs

Save Nom

MEASUREMENT MODE

–

53.388fF

50mVac 1.5000kHz

Range Speed Med

0.01234

0.2179nSD

HiLo+1.00%

Auto

Clockwise: Light

C LXBZY

Parallel

Hide Scale

–1.00%

Vm:549.8mV

Save Nom

Im:724.9pA

Q DRG

Abs

2. Press the Up/Down key and move

the cursor to Line frequency.

:Line frequency 50Hz

3. If necessary, press the Left/Right

key to select the frequency, from 50

to 60Hz or from 60Hz to 50Hz.

:Line frequency 60Hz

GETTING STARTED

LCR-8101 User Manual

Fixture Connection

Fixture structure

Background

Diagram

Description HFORCE

The standard fixture is a four-wire type with a common terminal for screen connection. The outer terminals (Hforse and Lforce) provide the current and the inner terminals (Hsense and Lsense) measures the potential.

LFORCE LSENSE HSENSE HFORCE

GND

(Optional)

+–

Carries the signal current source. Connected to the + side of the device under test.

Fixture connection

Panel operation

1. Discharge the test component before connecting

the fixture set.

2. Connect each fixture terminal to the front panel

BNC connector with matching color.

FORCE

SENSE

FORCE

3. Connect the fixture to the test component. If the

component has polarity, connect the H side to the positive lead and the L side to the negative lead. Make sure the distance between the lead base and fixture clip is short enough.

H side

HSENSE

Together with Lsense, monitors the Potential. Connected to the + side of

L side

the device under test.

LSENSE

Together with Hsense, monitors the Potential. Connected to the – side of

4. If the test component has an outer case

unconnected to either of the lead, connect the ground terminal for noise level reduction.

the device under test.

LFORCE

Accepts the signal current return. Connected to the – side of the device under test.

GND

If the test component has a large metal area NOT connected to either of the terminals, connect the GND clip to minimize noise level.

GETTING STARTED

LCR-8101 User Manual

Tutorials (Step by Step Operations)

Basic measurement (without Pass/Fail test)

Step Description Details

1. Connect fixture

2. Enter menu

3. Hide scale

4. Select measurement item

5. Select series/ parallel circuit

6. Set measurement frequency

7. Set measurement Vol tag e

8a. Select Single measurement

8b. Select Repetitive measurement

Optional settings

Connect the fixture to the DUT. Page

Press the Menu key, followed by F1 (AC measurement) or F2 (Rdc).

Press F4 (Show/Hide Scale) to hide the scale (or show the circuit diagram)

Press F1 (First) and F2 (Second) repeatedly to select the measurement item.

If available, press F3 (Series/Parallel) to select the equivalent circuit model.

Press the Left/Right arrow key and move the cursor to the Frequency. Use the numerical and unit keys to set the level.

Press the Left/Right arrow key and move the cursor to the Voltage. Use the numerical and unit keys to set the level.

Press the Sing/Rep key to select Single (manual trigger) measurement. To trigger measurement, press the Trig key.

Press the Sing/Rep key to select Repetitive (automatic trigger) measurement. Press the Left/Right arrow key and move the cursor to Speed. Press the Up/Down key to select the speed.

To hide the drive Voltage/Current, press the Code key and type 80, the Enter key.

Set the Range (internal setting) to Auto, use the Left/Right key to move the cursor and Up/Down key to change the setting.

Page

Page45

Pass/Fail test (Single step)

Step Description Details

1. Connect fixture

2. Set buzzer sound

2. Enter menu

3. Show scale

4. Select measurement item

5. Select series/ parallel circuit

6. Set measurement frequency

7. Set measurement Vol tag e

8a. Select Single measurement

8b. Select Repetitive measurement

Connect the fixture to the DUT. Page

Press the Menu key, then F5 (System). Press the Up/Down arrow key to move the cursor to Beep, then use the Left/Right key to select setting (Off recommended).

Press the Menu key, followed by F1 (AC measurement) or F2 (Rdc).

Press F4 (Show/Hide Scale) to show the scale (or hide the circuit diagram)

Press F1 (First) and F2 (Second) repeatedly to select the measurement item.

If available, press F3 (Series/Parallel) to select the equivalent circuit model.

Press the Left/Right arrow key and move the cursor to the Frequency. Use the numerical and unit keys to set the level.

Press the Left/Right arrow key and move the cursor to the Voltage. Use the numerical and unit keys to set the level.

Press the Sing/Rep key to select Single (manual trigger) measurement. To trigger measurement, press the Trig key.

Press the Sing/Rep key to select Repetitive (automatic trigger) measurement. Press the Left/Right arrow key and move the cursor to Speed. Press the Up/Down key to select the speed.

Page

GETTING STARTED

LCR-8101 User Manual

9a. Select Absolute measurement

9b. Select Percentage measurement

Optional settings

Press F5 (Abs/%) to select Abs. Press the Left/Right key to move the cursor to Lo (Low limit). Use the numerical and unit keys to set the Low limit. Repeat this for Hi (Hi limit) as well.

Press F5 (Abs/%) to select %. Press the Left/Right key to move the cursor to the Nominal value. Use the numerical and unit keys to set the numerical level. Then move the cursor to Lo (Low limit) and set the percentage. Repeat this for Hi (Hi limit) as well. To save the latest measurement result as Nominal, press F6 (Save Nom).

To hide the drive Voltage/Current, press the Code key and type 80, the Enter key.

Set the Range (internal setting) to Auto, use the Left/Right key to move the cursor and Up/Down key to change the setting.

Page

Page45

Pass/Fail test (Multiple step)

Step Description Details

1. Connect fixture

2. Set buzzer sound

2. Enter multiple step mode

2. Select measurement item

3a. Set parameters

3b. Add steps

3c. Copy to the next step

Connect the fixture to the DUT. Page

Press the Menu key, then F5 (System). Press the Up/Down arrow key to move the cursor to Beep, then use the Left/Right key to select setting (Off recommended).

Press the Menu key, then F3 (Multi step). Page

Press the arrow keys to move the cursor to Step 01 Func. Press F1 (Prog) repeatedly to select the item.

Press the arrow keys to move the cursor to the parameters below. Use the numerical and unit keys for editing values or F1 (Prog) for selecting options.

Move the cursor to the first empty step and press F1 (Prog).

Press F2 (Copy). The selected step contents are copied and inserted to the next step.

Page

3d. Delete step

Press F3 (Delete). The selected step is

Page

deleted.

4. Save program

Press F4 (Save). The edited program is

Page

saved.

5. Enter Run

Press F6 (Run). The Run menu opens. Page

6. Set Single or Repetitive

Press the Sing/Rep key to select Single (manual trigger) or Repetitive (auto

Page

trigger).

GETTING STARTED

LCR-8101 User Manual

7. Start running

File operation: new program

File operation: load

File operation: delete

File operation: save as

If the test has not started yet, press F1 (Start) or Trig key. Press F6 (Set) to go back to the setup menu.

Press F5 (File), then F4 (New). Press the Left/Right keys to move the cursor and press the Down key to select character. To confirm the file name, press the Enter key. A new file appears.

To delete a character, press the Up key.

To quit, press the Clear key.

Press F5 (File), then F1 (Load). Use the arrow keys to select the program and press F1 (Load).

Press F5 (File), then F2 (Delete). Use the arrow keys to select the program and press F5 (Del).

Press F5 (File), then F3 (Save as). Press the Left/Right keys to move the cursor and press the Down key to select character. To confirm the file name, press the Enter key. A new file appears.

To delete a character, press the Up key.

To quit, press the Clear key.

Page

Graph mode

Step Description Details

1. Connect fixture

2. Enter graph mode

3. Select item

4a Set horizontal scale (frequency)

4bSet horizontal scale (voltage)

5. Select speed

Connect the fixture to the DUT. Page

Press the Menu key, then F4 (Graph). Page

Press F5 repeatedly to select the graph item.

Press the Up/Down key to move the cursor to Sweep. Press the Left/Right key to select Frequency. Then move the cursor to Start Frequency, set the value using the numerical and unit keys. Repeat this for Stop Frequency and Level (drive Voltage).

Press the Up/Down key to move the cursor to Sweep. Press the Left/Right key to select Voltage. Then move the cursor to Start Voltage, set the value using the numerical and unit keys. Repeat this for Stop Voltage and Freq (frequency).

Press the Up/Down key to move the cursor to Speed. Press the Left/Right key to select the measurement speed.

Page

Page80

Page

6. Select step size

Press the Up/Down key to move the

Page89 cursor to Step size. Press the Left/Right key to select the data step (all or sampled).

7. Select linear or log scale

8a. Set vertical scale (Absolute + Auto fit)

Press F1 (Lin/Log) to select linear or logarithmic horizontal scale.

Press F2 (Abs/%) to select Abs, then press F3 (Manual/Auto fit) to select Auto fit. LCR-8101 automatically configures the

Page

vertical scale.

GETTING STARTED

LCR-8101 User Manual

8b. Set vertical scale (Absolute + Manual fit)

8c. Set vertical scale (Percentage + Auto fit)

8d. Set vertical scale (Percentage + Manual fit)

9. Plot graph

10. Fit graph into display

11. Move marker

12. Return to previous menu

Press F2 (Abs/%) to select Abs, then press F3 (Manual/Auto fit) to select Manual fit. Move the cursor to Hi, set the Hi value. Repeat this for Lo as well. The minimum and maximum vertical range is manually configured.

Press F2 (Abs/%) to select %, then press F3 (Manual/Auto fit) to select Auto fit. Move the cursor to Nominal and set the nominal value. LCR-8101 automatically configures the vertical range around the nominal value.

Press F2 (Abs/%) to select %, then press F3 (Manual/Auto fit) to select Auto fit. Move the cursor to Hi, set the Hi percentage. Repeat this for Lo and Nominal. The minimum and maximum vertical range is manually configured.

Press F4 (Start). The graph is drawn on the display. To abort, press F6 (Abort).

When plotting is finished, press F1 (Function), then F2 (Fit). The vertical scale is automatically adjusted to include all the plotted line. Press F1 (View) to go back.

Press the Left/Right keys to move the marker on the graph. To move the marker to the peak, press F1 (Function) and F3 (Peak). To move to the dip, press F4 (Dip). Press F1 (View) to go back.

Press F6 (Return) or press the Menu key to go back to the previous or the other menu.

Page

Page93

Measurement tip

Hi/Low impedance

Metal component case connection

Small-sized capacitor

Small-sized inductor

If the measured impedance is greater than 1kΩ, the standard four-terminal connection is not necessary. Run S/C trim to remove the effect of series lead impedance.

If the measured impedance is lower than 1kΩ, four-terminal connection can reduce the effect of contact resistance at the test component.

A large area of metal can add noise to the measurement. Here is how to minimize the effect.

If the metal is connected to one of the terminals, this should be connected to the Hforce (Yellow) terminal side.

If the metal is NOT connected to either of the terminals, connect the GND clip.

When measuring small, SMD-size capacitors, run O/C trim at the measurement frequency (Spot trimming) to eliminate the residual capacitance. Make sure the measurement lead positions are fixed during trimming.

When measuring small, SMD-size inductors, run S/C trim at the measurement frequency (Spot trimming). LCR-8101 measures the difference between the inductance of S/C trimming and the inductance of test component. Four-terminal fixture set is recommended and make sure the measurement leads are fixed during trimming.

The wire inductance should be subtracted from the measurement result.

• 5cm, 1mm diameter wire has 50nH inductance

• 5cm, 2mm diameter wire has 40nH inductance

Wire inductance

GETTING STARTED

LCR-8101 User Manual

Frequency factor in inductor measurement

Air-cored coils

Iron-cored and ferrite inductor

When an inductor is measured at a frequency much lower than that for which it is designed (for example, an HF choke tested at AF), the inductor tends to behave as an inductive resistor. In these circumstances, measurement accuracy is widened by (1 + 1/Q) where Q is the quality factor.

Air-cored coils can pick up noise very easily, therefore they should be kept well clear of any test equipment that may contain power transformers or display scan circuitry. Also, keep the coils away from metal objects which may modify inductor characteristics.

The effective value of iron-cored and ferrite inductors can vary widely with the magnetization and test signal level. Measure them at the AC level and frequency in use. When core materials are damaged by excessive magnetization (for example: tape heads and microphone transformers), check that the test signal is acceptable before connection.

BASIC MEASUREMENT

Basic measurement measures DUT in numerical style. Advanced measurements are available in

Measurement item

Pass/Fail test mode (page results are compared with user-defined limits, and in Graph mode (page is displayed in graphical representation.

Measurement combination ............................. 31

Series/Parallel circuit models ......................... 32

Resistance (R) and Conductance (G = 1/R)..... 34

Capacitance (C) .............................................. 35

Inductance (L) ................................................ 36

Reactance (X) and Susceptance (B = 1/X)....... 37

Impedance (Z) and Admittance (Y = 1/Z) ....... 38

Quality factor (Q) and Dissipation factor (D) . 39

Angle (θ) ........................................................ 40

52), where measurement

75), where measurement data

Measurement overview

Measurement configuration

Run measurement

Enter measurement mode...............................

Display overview............................................. 42

Show circuit model or scale (pass/fail)........... 43

Select measurement item ............................... 44

Set measurement range to Auto...................... 45

Set measurement frequency............................ 46

Set measurement voltage ............................... 48

Select Single measurement............................. 49

Select Repetitive measurement ....................... 50

Hide drive Voltage/Current............................. 51

BASIC MEASUREMENT

(

)

LCR-8101 User Manual

Measurement Item Description

In general, two items, primary and secondary, are combined in a single measurement. The following table shows the available combinations. Overview of each measurement items is listed from the next page.

Measurement combination

:Yes :No

1st measurement 2nd measurement Circuit model Graph Prog

Q D R

Capacitance (C)

Inductance (L)

Reactance (X)

Susceptance (B)

Impedance (Z)

Admittance (Y)

DC Resistance(RDC)

Quality factor (Q)

Dissipation factor (D)

AC Resistance (RAC)

Conductance (G)

Angle (θ)

*Prog: Multi-step program

• The graph measurement is described in graph mode chapter,

page

75.

• The multi-step program mode is described in the Pass/Fail test

chapter, page

61.

AC G Angle Series

Parallel

Series/Parallel circuit models

Background

Capacitance (C) Series diagram

Series formula

When to use Series (C

Inductance (L) Series diagram

For measuring AC Resistance, Capacitance, Reactance, Inductance, and Susceptance, series and parallel equivalent circuit models are available. Select the model according to the component value.

Parallel diagram

Parallel formula

1 DCC

D=dissipation factor

Small capacitance: Reactance (X) < 1kΩ

Example: 1μF @ 1kHz = 100Ω (X) → Series

D=dissipation factor

When to use Parallel (CP)

Large capacitance: Reactance (X) > 1kΩ

Example: 100mF @ 1kHz = 100kΩ (X) → Parallel

Parallel diagram

()

1 D

BASIC MEASUREMENT

(

)

(

LCR-8101 User Manual

Series formula

⎛ ⎜

⎜ ⎝

Q=quality factor

When to use Series (L

Small capacitance: Reactance (X) < 1kΩ

Example: 1μH @ 1kHz = 100Ω (X) → Series

Resistance Series diagram

Series formula

Q=quality factor

()

1 Q

⎞

⎟

⎠

Parallel formula

Q=quality factor

When to use Parallel (L

Large capacitance: Reactance (X) > 1kΩ

Example: 100mH @ 1kHz = 100kΩ (X) → Parallel

Parallel diagram

Parallel formula

Q=quality factor

⎛ ⎜

⎜ ⎝

1 QRR

Resistance (R) and Conductance (G = 1/R)

⎞

⎟

⎟ ⎠

Background

Resistance Conductance

Type

Range

Measurement combination

Formula

Resistance measures how difficult it is for the electricity to flow between two terminals. Conductance is the reciprocal of Resistance and measures how easily the electricity flows.

• Series Resistance R

• Parallel Resistance R

• DC Resistance R

0.01mΩ ~ 1GΩ 0.001nS ~ 1GS

• C

• L

• X

• C

+ RS

+ RP

• L

• B

• R

+ RP

−===

• Parallel Conductance

(= 1/RP)

jXZ

Note: Conductance is available only for parallel circuit model.

• C

+ GP

• L

+ GP

• B

+ GP

jBY

−===

When to use Series (R

Small resistance: < 1kΩ

When to use Parallel (RP)

Large resistance: > 1kΩ

ZLjZ

XRZ

()

cosZRS=

+=−=

)

YCjY

()

BGY

cosYGP=

+=−=

)

BASIC MEASUREMENT

LCR-8101 User Manual

Capacitance (C)

Background

Range

Type

Combination

Formula

Capacitance measures the amount of electronic charge stored between two terminals.

0.001pF ~ 1F

• Series Capacitance C

• C

+ Q

• C

+ D

• C

+ RS

−=

RCD

• Parallel Capacitance C

• C

+ Q

• C

+ D

• C

+ RP

• C

+ GP

CjGY

RCQ

Inductance (L)

Background

Inductance measures the amount of magnetic flux generated in certain electrical current.

Range

Type

Measurement combination

Formula

0.1nH ~ 100kH

• Series Inductance L

• L

+ Q

• L

+ D

• L

+ RS

LjRZ

= ,

• Parallel Inductance LP

• L

+ Q

• L

+ D

• L

+ RP

• L

+ GP

−=

GLD

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Precision LCR-8101 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

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