GW Instek LCR-800 User Manual

Precision LCR Meter

LCR-800

USER MANUAL

GW INSTEK PART NO. 82CR-81900MK1

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

The information in this manual was correct at the time of printing. However, Good Will continues to improve products and reserves the right to change specifications, equipment, and maintenance procedures at any time without notice.

ISO-9001 CERTIFIED MANUFACTURER

Good Will Instrument Co., Ltd.

No. 7-1, Jhongsing Rd., Tucheng City, Taipei County 236, Taiwan.

SAFETY INSTRUCTIONS
Table of Contents
SAFETY INSTRUCTIONS ...................................................	5
GETTING STARTED .........................................................	10
Main Features ......................................	11
Measurement Type...............................	12
Front Panel Overview ...........................	13
Rear Panel Overview ............................	16
Power Up .............................................	18
Fixture Connection...............................	20
Zeroing ................................................	24
Component Measuring Guidelines .......	26
BASIC MEASUREMENT ...................................................	29
Measurement Item Description ...........	30
Parameter Configuration ......................	31
Running Measurement.........................	43
Store Recall..........................................	45
BIN FUNCTIONS ............................................................	48
Binning Menu ......................................	50
Set Bin Menu .......................................	61
Bin Summary Menu .............................	68
RS232 REMOTE...............................................................	72
LCR Setup ............................................	73
LCR Viewer...........................................	74
Terminal Connection ............................	84
PROGRAMMING .............................................................	87
Command Syntax .................................	87
Commands ..........................................	90
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LCR-800 User Manual
INTERACE ......................................................................	111
RS232 Interface Configuration ...........	112
Signal Overview .................................	116
FAQ ...............................................................................	121
APPENDIX .....................................................................	123
Fuse Replacement ..............................	123
Circuit Theory and Formula ................	124
Accuracy Definitions ..........................	132
Specifications ....................................	136
EC Declaration of Conformity .............	140
INDEX............................................................................	141

4

SAFETY INSTRUCTIONS

SAFETY INSTRUCTIONS

This chapter contains important safety instructions that you must follow when operating or storing the LCR-800. Read the following before any operation to insure your safety and to keep the LCR-800 in the best possible condition.

Safety Symbols

These safety symbols may appear in this manual or on the LCR-800.

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

Caution: Identifies conditions or practices that CAUTION could result in damage to the LCR-800 or to other

properties.

DANGER High Voltage

Attention Refer to the Manual

Protective Conductor Terminal

Earth (ground) Terminal

Do not dispose electronic equipment as unsorted municipal waste. Please use a separate collection facility or contact the supplier from which this instrument was purchased.

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LCR-800 User Manual

Safety Guidelines

General

Guideline

CAUTION

Do not place any heavy object on the LCR-800.

Avoid severe impact or rough handling that leads to damaging the LCR-800.

Do not discharge static electricity to the LCR800.

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 the LCR-800 unless you are qualified as service personnel.

(Measurement categories) EN 61010-1:2001 specifies the measurement categories and their requirements as follows. LCR-800 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.

Power Supply

WARNING

AC Input voltage: 100V-240V, 50-60/400Hz

The power supply voltage should not fluctuate more than 110V-240V ±10%.

Connect the protective grounding conductor of the AC power cord to an earth ground, to avoid electrical shock.

Fuse

WARNING

6

Fuse type: FUSE 5TT 3A/250V

Make sure the correct type of fuse is installed before powering up.

			SAFETY INSTRUCTIONS
			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.
Cleaning LCR-800			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.
Operation			Location: Indoor, no direct sunlight, dust free,
Environment			almost non-conductive pollution (Note below)
			Relative Humidity: < 85%
			Altitude: < 2000m
			Temperature: 10°C to 50°C
		(Pollution Degree) EN 61010-1:2001 specifies the pollution degrees
		and their requirements as follows. LCR-800 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.

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LCR-800 User Manual

Storage environment

Disposal

Location: Indoor

Relative Humidity: < 85%

Temperature: −20°C to 60°C

Do not dispose this instrument as unsorted municipal waste. Please use a separate collection facility or contact the supplier from which this instrument was purchased. Please make sure discarded electrical waste is properly recycled to reduce environmental impact.

8

SAFETY INSTRUCTIONS

Power cord for the United Kingdom

When using the LCR-800 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 or 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.

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LCR-800 User Manual

GETTING STARTED

This chapter describes the instrument’s main features, front & rear panels, power up sequence, fixture connections and calibration.

	Main Features..............................................................	11
Main Features
	Model comparison ......................................................	12
Measurement type Measurement item ......................................................		12
	Measurement combination.........................................	12
	Front Panel Overview ..................................................	13
Panel overview
	Rear Panel Overview....................................................	16
	Power Up .....................................................................	18
Setup
	Tilt stand ......................................................................	18
	Power up ......................................................................	18
Fixture connection Fixture Connection ......................................................		20
	Fixture structure ..........................................................	20
	Fixture connection .......................................................	21
	External voltage bias connection ................................	22
Bias voltage
connection
	Zeroing.........................................................................	24
Zeroing
	Zeroing calibration ......................................................	24

10

GETTING STARTED

Main Features

12Hz ~ 200kHz wide test frequency (LCR-821)

Performance

5 digit measurement resolution2V DC bias voltage

0.05% basic measurement accuracy (LCR821/819/817)

0.1% basic measurement accuracy (LCR829/827/826)

Automatic and manual measurements

Operation

Dual measurement display

Measurement in absolute values or as a deviation from a nominal value.

Precision four wire fixtureComponent Sorting

Up to 30V DC external bias voltageInternal memory

Large Dot matrix display, 240x128 resolution

Intuitive user interface, comprehensive measurement functions

RS-232C (LCR-821), LCR-819/817/816 optional

Interface

Handler Interface (LCR-829/827/826)

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LCR-800 User Manual

Model comparison

LCR model

Test Frequency

821

819

829

817

827

816

826

(12Hz~200kHz)

•

(12Hz~100kHz)

•

•

(12Hz~10kHz)

•

•

(100Hz~2kHz)

•

•

Measurement Types

Measurement item

Primary

Capacitance (C)

Inductance (L)

measurements

Impedance (Z)

Resistance (R)

Secondary

Dissipation factor (D)

Quality factor (Q)(=1/D)

measurements

Resistance (R)

Phase Angle (θ )

Measurement combination

:Available,

:Not available

1st measurement

2nd measurement

Circuit model

Q

D

R

θ

Series

Parallel

Capacitance (C)

Inductance (L)

Impedance (Z)

Resistance (R)

*Only the LCR-821 can select L/R and Z/θ measurement modes.

12

GETTING STARTED

Front Panel Overview

240 by 128, dot matrix LCD display.

LCD Display

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

Used to enter numerical values or access

Number secondary menu functions. pad/menu keys

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LCR-800 User Manual

The bias key selects an internal or 7. Bias external bias. The bias will be

displayed on the bottom of the LCD display as INT.B (internal bias) or EXT.B (external bias).

8.On/Off		The On/Off key turns the internal
		or external bias on or off.
4. PPM		Measures Dissipation and Quality
		factor as PPM.
1. C.V		Turns constant voltage mode on or
		off.
0. R.H		Used to turn Range Hold On or Off.
-. FREQ		Used to enter test frequencies.

Used to enter numbers, decimals Numerical and negative values.

numbers

Enter		The Enter key is used to confirm
		menu and number entries.

14

GETTING STARTED

	Start	The Start key is used to start
		measuring when in manual mode.
		The start key can also be used to
		select automatic or manual
		measuring modes.
		Hold the Start key for 3 seconds to
		toggle between auto and manual
		mode.

Force and Sense terminals
Terminals	Current return
LFORCE
LSENSE	Low potential
HSENSE	High potential
HFORCE	Current output

Force and Sense terminals

Turns the power on or off.

Power Switch

On

Off

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LCR-800 User Manual

Rear Panel Overview

LCR-819, LCR-817, LCR-816

LCR-829, LCR-827, LCR-826

Contrast control

External Bias

LCR-821

The LCD contrast control

The positive and negative external bias.

30V (35V	Max voltage
tolerable)
200mA	Max current

16

GETTING STARTED

Fuse / Power

Socket

The fuse holder contains the main fuse, 5TT 3A/250V. For fuse replacement details, see page 123.

The mains socket accepts the power cord. See page 18 for power-up details.

Ground input.

Ground

	Handler Interface	Handler interface for binning
		(LCR-829/827/826 only).

RS232 interface (LCR-821). RS232 RS-232 Interface interface is used for remote control

with the LCR-Viewer software. RS232 is also available as a factory installed option (LCR816/817/819).

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LCR-800 User Manual

Power Up

Tilt stand

Low Angle	Ensure the stand is up.

High Angle Ensure the stand is down.

Power up

Panel operation 1. Connect the power cord to the socket.

2.Press the power button. The display becomes active in 2~3 seconds.

3.Use the contrast knob on the rear panel to adjust the LCD display contrast.

18

						GETTING STARTED
			Counter-					Clockwise:
			clockwise:					dark
			bright

LCR-800 User Manual

Fixture Connection

Fixture structure

Background The standard fixture is a four-wire type (Kelvin 4 wire). The outer terminals (Hforce and Lforce) provide the current and the inner terminals (Hsense and Lsense) measures the potential.

Diagram

Description

HFORCE

Carries the signal current source.

Connected to the + side of the device

under test.

HSENSE

Together with Lsense, monitors the

Potential. Connected to the + side of

the device under test.

LSENSE

Together with Hsense, monitors the

Potential. Connected to the – side of

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 to the GND

input to minimize noise level.

19

20

GETTING STARTED

Fixture connection

Panel operation 1. Discharge the test component before connecting the fixture set.

2.Connect the Kelvin clip test lead into the front terminals. Line the lead fixture up to the front terminals and slide in. Turn the BNC handle counter clockwise to unlock the fixture. Turn the handles clockwise to lock the fixture.

TEST LEADS

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.

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LCR-800 User Manual

H side

L side

4.If the test component has an outer case unconnected to either of the leads, connect to the ground terminal for noise level reduction.

External voltage bias connection

Background An external voltage bias of 0-30 volts with a maximum of 200mA can be applied to the external voltage bias terminals on the rear panel. The external bias voltage must be floating and not connected to ground. For details for setting the external bias voltage see page 34.

1.Connect the voltage bias terminals to a bias voltage. Leave ground floating.

22

GETTING STARTED

Power	+	LCD	+
Supply
		EXTERNAL BIAS
		30V	MAX
		200mA	MAX
		CAT

Don’t connect

23

LCR-800 User Manual

Zeroing

Zeroing calibration

Background

Open and short circuit calibration (zeroing) should

be performed on a daily basis to correct for cable

and fixture errors before taking measurements.

When test fixtures or test cables are changed, the

zeroing process should be performed again. All

data performed during the calibration is stored in

the internal memory of the LCR-800.

The Open circuit calibration determines the stray

admittance and compensates high impedance

measurements. The short calibration determines

the residual impedance and is used when

determining low impedance measurements.

The Open circuit calibration measures the stray

Open circuit

admittance of the test fixture. This is used for high

impedance measurements.

Procedure

1. Insert the test fixture or cable.

Ensure the cables are not

shorted and are open.

2. Press the MENU key, then OFFSET, followed

by CAP OFFSET.

3. Wait for the calibration to finish. If the OPEN

TEST was successful, the screen will display the

following message:

24

	GETTING STARTED
Warning	If the test failed, ensure your cables or test fixtures are
	open and not shorted. Ensure R.H is OFF. After
	inspection try again.
Short circuit	The short test will calibrate the short circuit
	impedance of the cables or test fixtures. This is
	used for low impedance measurements
	4. Short the cables or test fixtures
	using a short thick copper wire
	if necessary.
	5. Press R/L offset in the offset menu.
	6. Wait for the calibration to finish. If the SHORT
	TEST was successful the following message is
	displayed.
Warning	If the test failed, ensure your cables or test fixtures
	are shorted. Ensure R.H is OFF. After inspection
	try again.

	7. Press EXIT when both tests are OK.
Warning	Failure to pass both tests will result in erroneous
	measurements.

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LCR-800 User Manual

Component Measuring Guidelines

Background For measuring Impedance, Capacitance, Inductance, and Resistance, series or parallel equivalent circuit models are available. Usually a component manufacturer will specify how a component should be measured and at what frequency. If not, use the guidelines below. Select the equivalent circuit and frequency according to the component value. For more information about equivalent circuit models and theory see page 124.

General Inductors Inductors have always traditionally been measured in series equivalent circuits. For large inductors a lower test frequency yields more accurate results. For small inductors, higher frequencies are more accurate.

Test			Expected Inductance
Frequency	<10uH 10uH~1mH 1mH~1H							>1H
0.1kHz								Series
					Series
1kHz
10kHz			Series
100kHz	Series

26

GETTING STARTED

General

Capacitors are usually measured in series except

Capacitors

for extremely small capacitance. Like with

inductors, larger capacitors should be measured

with low frequencies. Small capacitors with high

frequencies.

Test

Expected Capacitance

Frequency

<10pF

10pF~400pF 400pF~1uF

>1uF

0.1~0.12 kHz

Series

Series

1kHz

10kHz

Series or

Parallel

100kHz

Parallel

General Resistors

A series inductance circuit is the best equivalent

circuit for low resistance (<1kΩ) and a parallel

capacitance circuit for high resistances (>10MΩ).

Test

Expected Resistance

Frequency

<1kΩ

1kΩ~10MΩ

>10MΩ

0.03kHz

Parallel

Parallel

0.25kHz

1kHz

Series

Metal component A large area of metal can add noise to the

case connection 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 terminal side.

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

Wire capacitance When measuring the wire capacitance, the fixture clips that are marked with HF(High Force)/HS (High Sense) should always be connected to the point that is influenced the most by noise.

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LCR-800 User Manual

Air-cored coils 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.

Iron-cored and The effective value of iron-cored and ferrite

ferrite inductor inductors can vary widely with magnetization and test signal level. Measure them at the AC level and frequency in use. Unlike most inductors, a parallel equivalent circuit is most suitable for iron-cored inductors. When core materials are damaged by excessive magnetization (for example: tape heads and microphone transformers), check that the test signal is acceptable before connection.

28

BASIC MEASUREMENT

BASIC MEASUREMENT

	Basic Measurement details how to measure
	individual components and how to configure the
	LCR-800 settings. Basic Measurement also
	describes how to save and recall memory.
	Advanced functions such as the handler menu or
	remote control are detailed on page 48 and 72,
	respectively.
	Measurement Item Description.................................	30
Measurement
	Measurement combination........................................	30
Description
	Display overview .........................................................	30
	Parameter Configuration .............................................	31
Configuration
	Measurement Speed....................................................	31
	Select equivalent circuit type......................................	33
	Set Bias voltage...........................................................	34
	Set measurement frequency.......................................	35
	Set measurement voltage...........................................	37
	Set PPM for D/Q measurements...............................	38
	Set constant voltage source .......................................	39
	Set Range hold............................................................	40
	Set Average .................................................................	40
	Set Nominal Values .....................................................	41
	Running Measurement...............................................	43
Measurement
	Select Single measurement........................................	43
	Select Automatic measurement .................................	44
	Store Recall .................................................................	45
Store/Recall
	Store or Recall Memory Settings................................	45
	Recall Calibration Settings..........................................	46

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LCR-800 User Manual

Measurement Item Description

In general, two measurement items, primary and secondary, are combined in a single measurement. The following table shows the available combinations. Details of the measurement modes and the circuit theory and formula can be found in the appendix, page 124.

Measurement combination

:Available,

:Not available

1st measurement

2nd measurement

Circuit model

Q

D

R

θ

Series

Parallel

Capacitance (C)

*

Inductance (L)

*

Impedance (Z)

Resistance (R)

*LCR-821

Display overview

Normal mode

30

BASIC MEASUREMENT

Parameter Configuration

Measurement Speed

Measurement The LCR-800 series support 3 different

Speed measurement speeds: slow, medium or fast at approximately 1, 5 or 12 (LCR-829/827/826) measurements per second. The faster the measurement speed, the lower the accuracy. Conversely the slower the measurement speed, the higher the accuracy. The measurement speed and accuracy are dependent on the mode, voltage and frequency. For detailed information, see the specification table on page 136.

LCR-817/ 819/ 821		Accuracy	Measurements/second
	Slow	0.05%	At least 1
	Medium	0.1%	At least 3
	Fast	0.24%	At least 7
LCR-816/826/827/829		Accuracy	Measurements/second
	Slow	0.1%	At least 1
	Medium	0.2%	At least 3
	Fast	0.48%	At least 7

Panel operation 1. From the main menu, press the SPEED menu key to cycle between the various speeds.

LCR-800 User Manual

Displayed measurement unit

Measurement All measurement unit results can be displayed as units the absolute values, delta values or delta

percentage values.

Value will show the absolute value of the measurement in Ohms (Ω), Henries (H) or Farads

(F). The primary measurement has resolution of 5 digits; the secondary has a resolution of 4 digits (θ, 2 digits).

Delta% will show the percentage deviation of L, C, R or Z from a nominal (stored) value.

Delta will show the deviation from a nominal value as an absolute value in Ohms (Ω), Henries

(H) or Farads (F).

		Units
	Value	Ω, H, F
	Delta	Absolute deviation (Ω, H, F )
	Delta%	% deviation

Panel operation 1. From the main menu, press the DISPLAY menu key to cycle between the display types.

	31					32

BASIC MEASUREMENT

Measurement Modes

	Measurement	The LCR-800 has a number of different
	mode	measurement modes. Primary and secondary
		measurements are displayed on the screen
		simultaneously. For detailed information
		regarding the measurement combinations, see the
		specifications on page 136. The measurement
		combinations are shown in the table below.
		(C/D)	Capacitance/Dissipation
		(C/R)	Capacitance/Resistance
		(L/R)*	Inductance/Resistance
		(L/Q)	Inductance/Quality factor
		(Z/θ)*	Impedance/Angle
		(R/Q)	Resistance/Quality factor
	Panel operation	1. From the main menu, press the
		MODE menu key to cycle between
		the different modes.
	Note	*Only the LCR-821 can select L/R and Z/θ
		measurement modes.

Select Equivalent Circuit Type

Background Series or Parallel equivalent circuits can be selected. Not all measurement modes can be used with both series and parallel equivalent circuits. For details about circuit types see the circuit theory chapter on page 124.

Measurement	Series	Parallel
type
Capacitance (C)
Inductance (L)
Impedance (Z)
Resistance (R)

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LCR-800 User Manual

Panel operation 1. From the main menu, press the CIRCUIT menu key to cycle between the series or parallel equivalent circuits.

Series

Parallel

Set Bias voltage

	Background	Voltage bias can be set internally or externally. An
		internal voltage bias of 2 volts is normally applied
		to a DUT. External voltage bias is able to accept 0
		to 30 volts with a maximum current of 200mA. For
		external bias voltage connections see page 22.
		When measuring a DUT, please allow 1 second to
		stabilize a DUT after a bias voltage is applied. In
		general a bias voltage should only be applied to
		capacitors. If a bias voltage is applied to devices
		with low impedance, inaccurate measurements
		will occur.
	Note	When an external voltage is applied, constant voltage
		mode (C.V.ON) must be enabled, page 39.

34

BASIC MEASUREMENT

Panel operation 1. Press the 7/Bias key on the number pad to cycle from internal to external bias. The bottom of the screen will display internal or external bias.

2.Press 8/ON/OFF to turn the bias voltage on or off. The bottom of the screen will display the internal or external bias as on or off.

Set measurement frequency

Background The measurement frequency, together with the measurement voltage is used to define the electrical characteristics of each measurement item. Make sure the appropriate frequency is selected according to the component characteristics.

The frequency range of each model is as follows:

100Hz~2kHz	LCR-816/826
12Hz~10kHz	LCR-817/827
12Hz~100kHz	LCR-819/829
12Hz~200kHz	LCR-821

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LCR-800 User Manual

The LCR-821 can provide 504 different frequencies with a 5 digit resolution including decimal places. Any frequency can be keyed from the number pad, and the closest available frequency (of 504) will be selected automatically. The LCR-818/829 has 503 different frequencies and the LCR-817/827 and LCR-816/826 have 489 and 245, respectively.

To calculate the different possible frequencies, use the tables below.

	Frequency range			Formula	n range
LCR-821	0.012	To	0.23077kHz	3kHz/n	13 to 250
	0.23438	To	15kHz	60kHz/n	4 to 256
	15.385	To	200kHz	200kHz/n	1 to 13
	Frequency range			Formula	n range
LCR-819/829	0.012	To	0.23077kHz	3kHz/n	13 to 250
	0.23438	To	15kHz	60kHz/n	4 to 256
	15.385	To	100kHz	200kHz/n	2 to 13
	Frequency range			Formula	n range
LCR-817/827	0.012	To	0.23077kHz	3kHz/n	13 to 250
	0.23438	To	10kHz	60kHz/n	6 to 256
	Frequency range			Formula	n range
LCR-816/826	0.10000	To	0.23077kHz	3kHz/n	13 to 30
	0.23438	To	2kHz	60kHz/n	30 to 256

Panel operation 1. Press the -/FREQ key on the number pad.

2.Enter the frequency using the numerical keys, and then press ENTER.

1.0kHz

36

BASIC MEASUREMENT

1.1kHz

The nearest frequency will be selected from the 504(LCR-281) nominal frequencies, and updated in the display. Here, the nearest frequency to 1.1kHz is 1.0909kHz.

	Note	After the test frequency has been changed, the zeroing
		must be performed again. See page 24

Set measurement voltage

Background Along with frequency, voltage can be set. Make sure the appropriate voltage is selected, according to the component characteristics.

Range		5mV ~ 1.275V (5mV steps) <200kHz
		100mV ~ 1.275 (5mV steps) @200kHz

Voltage setting 1. From the main menu, press MENU (F5) followed by SETTING (F3) and VOLT (F2)

2.Enter the voltage using the numerical keys, and then press ENTER.

100mV

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LCR-800 User Manual

1V

The voltage is updated in the display. If the voltage entered is outside the allowable voltage range, the nearest voltage is selected.

3. Press (F5) EXIT to exit the Setting menu.

Set PPM for D/Q measurements

Background Dissipation and Quality Factor (D/Q) measurements can be shown in parts per million (PPM) if D/Q is less than 0.0100. This increases the resolution by a factor of 100. The units of D and Q are dimensionless and are expressed as a decimal ratio with a multiplier of 1,000,000.

Ensure the operating mode has a D or Q component.

See page 33.

Panel operation 1. Press 4/PPM to turn PPM on or off for all D/Q measurements

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BASIC MEASUREMENT

PPM will be displayed on the right hand side of the screen, next to mode.

Set constant voltage source

Background If a DUT needs to be tested at a set voltage, the constant voltage function can be used. Using the C.V. function the LCR will maintain a source resistance of 25Ω. Therefore the test voltage is constant for any DUT impedance greater than 25Ω. Using the constant voltage feature will reduce the accuracy of measurements by a factor of 3.

Panel operation 1. Press 1/C.V to turn constant voltage on or off.

C.V ON / OFF is toggled each time the 1/C.V button is pressed.

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LCR-800 User Manual

Set Range hold

Background When DUTs are disconnected from the test cables/fixtures during continuous testing, Range Hold can be used to avoid range switching. This is particularly useful for repetitively testing a number of DUTs. For more information on Range and range hold, see the specifications, page 136.

Panel operation 1. Press 0/R.H to turn Range Hold on or off.

R.H ON / OFF is toggled each time the 0/R.H button is pressed.

Set Average

Background An arbitrary number of tests can be averaged to produce an averaged test result. 1-255 tests can be averaged. The larger the number of tests that are averaged, the longer the test time.

Panel operation 1. From the main menu, press MENU, followed by SETTING and AVGE.

2.Enter the number of number of averages (tests) using the numerical keys, and then press ENTER.

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BASIC MEASUREMENT

The average of 10 tests

The number of averages is displayed in the main panel and in the AVGE menu icon after a short processing time.

2. Press EXIT to exit to the main menu.

Set Nominal Values

Background The LCR-800 series are able to set nominal values when using the DELTA and DELTA% measuring modes. Nominal values can be set to up to 5 digits including decimal places. Each primary measuring unit can have the nominal value set.

Panel operation 1. From the main menu, choose the measuring mode that you wish to change by pressing (F3) MODE

until the correct measuring mode is displayed.

For example, if L/Q mode is selected, an inductance (mH) nominal value can be set.

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LCR-800 User Manual

Inductance (L)	H, mH
Capacitance (C)	nF, uF, pF
Impedance (Z)	Ω, KΩ
Resistance (R)	Ω, KΩ

3.Press MENU (F5), followed by SORT (F2) and NOM.VAL (F1).

3.Enter the nominal number using the numerical pad, followed by ENTER. Up to 5 digits can be entered.

0.6800mH

The NOM.VAL key and screen will be updated when a nominal value is entered.

4. Press EXIT to exit to the main menu.

BASIC MEASUREMENT

Running Measurement

Select Single measurement

Background Measurements can be manually controlled (MANU) or automatically updated (AUTO).

In manual mode, one measurement is performed by pressing the start key.

Panel operation 1. Press the START key to manually perform a measurement when in manual mode.

TESTING will appear on the screen, followed by the measurement results. The duration of the test will depend on the measurement accuracy and the number of averages used.

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LCR-800 User Manual

Select Automatic measurement

Background Measurement can be manually controlled (MANU) or automatically updated (AUTO).

In continuous mode (AUTO), measurements are automatically done and the display is updated according to the measurement speed setting.

Panel operation 1. Hold the START key for a few seconds to toggle between automatic (AUTO) and manual (MANU) mode.

2.When in AUTO mode, measurements will start automatically until AUTO mode is switched back to MANU.

The bottom of the screen will indicate if AUTO or

MANU mode is activated.

Testing will appear on the screen each time a measurement is completed.

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