BK Precision 894, 895 User Manual

Models: 894, 895

500 kHz/1 MHz LCR Meter

USER MANUAL

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Safety Summary

The following safety precautions apply to both operating and maintenance personnel and must
be followed during all phases of operation, service, and repair of this instrument.

Before applying power to this instrument:
Read and understand the safety and operational information in this manual.
Apply all the listed safety precautions.
Verify that the voltage selector at the line power cord input is set to the correct line voltage.
Operating the instrument at an incorrect line voltage will void the warranty.
Make all connections to the instrument before applying power.
Do not operate the instrument in ways not specified by this manual or by B&K Precision.

Failure to comply with these precautions or with warnings elsewhere in this manual violates the
safety standards of design, manufacture, and intended use of the instrument. B&K Precision
assumes no liability for a customer’s failure to comply with these requirements.

Category rating

The IEC 61010 standard defines safety category ratings that specify the amount of electrical
energy available and the voltage impulses that may occur on electrical conductors associated
with these category ratings. The category rating is a Roman numeral of I, II, III, or IV. This rating
is also accompanied by a maximum voltage of the circuit to be tested, which defines the voltage
impulses expected and required insulation clearances. These categories are:

Category I (CAT I): Measurement instruments whose measurement inputs are not intended to
be connected to the mains supply. The voltages in the environment are typically derived from a
limited-energy transformer or a battery.

Category II (CAT II): Measurement instruments whose measurement inputs are meant to be
connected to the mains supply at a standard wall outlet or similar sources. Example
measurement environments are portable tools and household appliances.

Category III (CAT III): Measurement instruments whose measurement inputs are meant to be
connected to the mains installation of a building. Examples are measurements inside a
building's circuit breaker panel or the wiring of permanently-installed motors.

Category IV (CAT IV): Measurement instruments whose measurement inputs are meant to be
connected to the primary power entering a building or other outdoor wiring.

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Do not use this instrument in an electrical environment with a higher category rating than what
is specified in this manual for this instrument.

You must ensure that each accessory you use with this instrument has a category rating equal to
or higher than the instrument's category rating to maintain the instrument's category rating.
Failure to do so will lower the category rating of the measuring system.

Electrical Power

This instrument is intended to be powered from a CATEGORY II mains power environment. The
mains power should be 115 V RMS or 230 V RMS. Use only the power cord supplied with the
instrument and ensure it is appropriate for your country of use.

Ground the Instrument

To minimize shock hazard, the instrument chassis and cabinet must be connected to an
electrical safety ground. This instrument is grounded through the ground conductor of the
supplied, three-conductor AC line power cable. The power cable must be plugged into an
approved three-conductor electrical outlet. The power jack and mating plug of the power cable
meet IEC safety standards.

Do not alter or defeat the ground connection. Without the safety ground connection, all
accessible conductive parts (including control knobs) may provide an electric shock. Failure to
use a properly-grounded approved outlet and the recommended three-conductor AC line power
cable may result in injury or death.

Unless otherwise stated, a ground connection on the instrument's front or rear panel is for a
reference of potential only and is not to be used as a safety ground.

Do not operate in an explosive or flammable atmosphere

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Do not operate the instrument in the presence of flammable gases or vapors, fumes, or finely­divided particulates.

The instrument is designed to be used in office-type indoor environments. Do not operate the
instrument

In the presence of noxious, corrosive, or flammable fumes, gases, vapors, chemicals, or finely­divided particulates.
In relative humidity conditions outside the instrument's specifications.
In environments where there is a danger of any liquid being spilled on the instrument or where
any liquid can condense on the instrument.
In air temperatures exceeding the specified operating temperatures.
In atmospheric pressures outside the specified altitude limits or where the surrounding gas is
not air.
In environments with restricted cooling air flow, even if the air temperatures are within
specifications.
In direct sunlight.

This instrument is intended to be used in an indoor pollution degree 2 environment. The
operating temperature range is 0 °C to 40 °C and 20% to 80% relative humidity, with no
condensation allowed.
Measurements made by this instrument may be outside specifications if the instrument is used
in non-office-type environments. Such environments may include rapid temperature or
humidity changes, sunlight, vibration and/or mechanical shocks, acoustic noise, electrical noise,
strong electric fields, or strong magnetic fields.

Do not operate instrument if damaged

If the instrument is damaged, appears to be damaged, or if any liquid, chemical, or other
material gets on or inside the instrument, remove the instrument's power cord, remove the
instrument from service, label it as not to be operated, and return the instrument to B&K
Precision for repair. Notify B&K Precision of the nature of any contamination of the instrument.

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Clean the instrument only as instructed

Do not clean the instrument, its switches, or its terminals with contact cleaners, abrasives,
lubricants, solvents, acids/bases, or other such chemicals. Clean the instrument only with a
clean dry lint-free cloth or as instructed in this manual.

Not for critical applications

This instrument is not authorized for use in contact with the human body or for use as a
component in a life-support device or system.

Do not touch live circuits

Instrument covers must not be removed by operating personnel. Component replacement and
internal adjustments must be made by qualified service-trained maintenance personnel who
are aware of the hazards involved when the instrument's covers and shields are removed.
Under certain conditions, even with the power cord removed, dangerous voltages may exist
when the covers are removed. To avoid injuries, always disconnect the power cord from the
instrument, disconnect all other connections (for example, test leads, computer interface
cables, etc.), discharge all circuits, and verify there are no hazardous voltages present on any
conductors by measurements with a properly-operating voltage-sensing device before touching
any internal parts. Verify the voltage-sensing device is working properly before and after making
the measurements by testing with known-operating voltage sources and test for both DC and
AC voltages. Do not attempt any service or adjustment unless another person capable of
rendering first aid and resuscitation is present.
Do not insert any object into an instrument's ventilation openings or other openings.

Hazardous voltages may be present in unexpected locations in circuitry being tested when a
fault condition in the circuit exists.

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Fuse replacement

Fuse replacement must be done by qualified service-trained maintenance personnel who are
aware of the instrument's fuse requirements and safe replacement procedures. Disconnect the
instrument from the power line before replacing fuses. Replace fuses only with new fuses of the
fuse types, voltage ratings, and current ratings specified in this manual or on the back of the
instrument. Failure to do so may damage the instrument, lead to a safety hazard, or cause a fire.
Failure to use the specified fuses will void the warranty.

Servicing

Do not substitute parts that are not approved by B&K Precision or modify this instrument.
Return the instrument to B&K Precision for service and repair to ensure that safety and
performance features are maintained.

Cooling fans

This instrument contains one or more cooling fans. For continued safe operation of the
instrument, the air inlet and exhaust openings for these fans must not be blocked nor must
accumulated dust or other debris be allowed to reduce air flow. Maintain at least 25 mm
clearance around the sides of the instrument that contain air inlet and exhaust ports. If
mounted in a rack, position power devices in the rack above the instrument to minimize
instrument heating while rack mounted. Do not continue to operate the instrument if you
cannot verify the fan is operating (note some fans may have intermittent duty cycles). Do not
insert any object into the fan's inlet or outlet.

For continued safe use of the instrument

Do not place heavy objects on the instrument.
Do not obstruct cooling air flow to the instrument.
Do not place a hot soldering iron on the instrument.
Do not pull the instrument with the power cord, connected probe, or connected test lead.
Do not move the instrument when a probe is connected to a circuit being tested.

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This product is subject to Directive 2002/96/EC of the European Parliament
and the Council of the European Union on waste electrical and electronic
equipment (WEEE), and in jurisdictions adopting that Directive, is marked as
being put on the market after August 13, 2005, and should not be disposed
of as unsorted municipal waste. Please utilize your local WEEE collection
facilities in the disposition of this product and otherwise observe all
applicable requirements.

Compliance Statements

Disposal of Old Electrical & Electronic Equipment (Applicable in the European
Union and other European countries with separate collection systems)

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CE Declaration of Conformity

This instrument meets the requirements of 2006/95/EC Low Voltage Directive and
2004/108/EC Electromagnetic Compatibility Directive with the following standards.

Low Voltage Directive 2006/95/EC

EN 61010:2010
EN 61010-2-030:2010

EMC Directive 2004/108/EC

EN 61326-1:2013
EN 6100-3-2:2006+A1:2009+A2:2009
EN 61000-3-3:2008
(CISPR 11:2009+A1:2010
IEC 61000-4-2:2008
IEC 61000-4-3-:2006+A1:2007+A2:2010
IEC 61000-4-4:2012
IEC 61000-4-5:2005
IEC 61000-4-6:2008
IEC 61000-4-11:2004)

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Safety Symbols

Refer to the user manual for warning information to avoid
hazard or personal injury and prevent damage to instrument.

Electric Shock hazard

Alternating current (AC)

Chassis (earth ground) symbol.

Ground terminal

On (Power). This is the In position of the power switch when
instrument is ON.

Off (Power). This is the Out position of the power switch when
instrument is OFF.

CAUTION indicates a hazardous situation which, if not avoided,
will result in minor or moderate injury

WARNING indicates a hazardous situation which, if not avoided,
could result in death or serious injury

DANGER indicates a hazardous situation which, if not avoided,
will result in death or serious injury.

NOTICE is used to address practices not related to physical injury.

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Contents

Product Overview ........................................................................................................... 15

Package Contents ........................................................................................................... 15

Dimensions ..................................................................................................................... 16

Front Panel Overview ..................................................................................................... 17

Front Panel Description ................................................................................................. 17

Rear Panel Overview ...................................................................................................... 18

Rear Panel Description ................................................................................................... 18

Display Overview ............................................................................................................ 19

Display Description ........................................................................................................ 19

Input Power Requirements ............................................................................................ 20

Input Power .................................................................................................................... 20

Fuse Requirements ........................................................................................................ 20

Fuse Replacement .......................................................................................................... 21

Leakage current ............................................................................................................. 21

Preliminary Check ........................................................................................................... 21

Safety Requirements ...................................................................................................... 21

Measurement Display Menu .......................................................................................... 23

Measurement Parameters .............................................................................................. 24

Primary Parameters ....................................................................................................... 24

Secondary Parameters ................................................................................................... 25

Parameter Combinations ............................................................................................... 25

Selecting Primary and Secondary Parameters ............................................................... 26

Test range ...................................................................................................................... 29

Test frequency ............................................................................................................... 29

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Test Signal Level ............................................................................................................. 30

DC BIAS ........................................................................................................................... 31

Test speed ...................................................................................................................... 32

Digits Resolution ............................................................................................................ 32

Zoom .............................................................................................................................. 33

Correction ....................................................................................................................... 34

Sweep Correction ........................................................................................................... 36

Short Correction ............................................................................................................. 37

Load Correction (Point-Frequency Correction) ............................................................. 38

Cable Length Selection ................................................................................................... 41

Impedance Parameters .................................................................................................. 41

Series and Parallel Models ............................................................................................. 43

Choosing a Test Frequency ............................................................................................ 43

Choosing a Measurement Circuit Model ....................................................................... 44

Measure Setup Menu ..................................................................................................... 46

Trigger Mode (TRIG) ....................................................................................................... 47

Auto Level Control (ALC) ................................................................................................ 48

Bias Current Isolation ..................................................................................................... 48

Average (AVG) ................................................................................................................ 49

Level Monitor (Vm/Im) .................................................................................................. 49

Delay Time (DELAY) ........................................................................................................ 50

Output Impedance ......................................................................................................... 50

Deviation Test Function (DEV A/DEV B) ......................................................................... 51

Measurement Parameters (PARAM) .............................................................................. 53

Swap Parameters ........................................................................................................... 53

Compare Function Modes (MODE) ................................................................................ 53

Tolerance Mode ............................................................................................................. 54

Auxiliary Bin (AUX) ......................................................................................................... 55

Comparator Function (COMP) ........................................................................................ 56

Enabling Compare Function ........................................................................................... 56

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High/Low Limits .............................................................................................................. 56

Bin Count Display ........................................................................................................... 58

PARAM ........................................................................................................................... 59

NOM. .............................................................................................................................. 59

COUNT ............................................................................................................................ 59

BIN .................................................................................................................................. 60

HIGH/LOW ...................................................................................................................... 60

AUX ................................................................................................................................. 60

OUT ................................................................................................................................ 60

No. ............................................................................................................................. 61

Mode ......................................................................................................................... 62

Sweep Parameter ...................................................................................................... 62

Limit Parameters ....................................................................................................... 63

High/Low Limits ......................................................................................................... 64

Delay .......................................................................................................................... 64

List Sweep Display Fields................................................................................................ 66

Running a List Sweep Example....................................................................................... 67

System Setup .................................................................................................................. 72

Pass Beep ....................................................................................................................... 72

Fail Beep ......................................................................................................................... 73

Language ........................................................................................................................ 73

Password ........................................................................................................................ 74

Bus Mode ....................................................................................................................... 74

GPIB ADDR (895 only) .................................................................................................... 74

Talk Only......................................................................................................................... 75

Bias SRC .......................................................................................................................... 75

Baud Rate ....................................................................................................................... 75

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Date/Time ...................................................................................................................... 75

LAN Setup ....................................................................................................................... 76

Default Settings and System Reset ................................................................................. 77

File Management ........................................................................................................... 77

Setup file (*.STA) ............................................................................................................ 78

Save Screenshot ............................................................................................................. 81

Save Measurements File ................................................................................................ 81

USB Flash Driver Requirements ..................................................................................... 81

Basic Accuracy A ............................................................................................................. 85

Measurement Accuracy Ae ............................................................................................ 86

Measurement Correction Factors .................................................................................. 86

Accuracy of D ................................................................................................................. 90

Accuracy of Q ................................................................................................................. 90

Accuracy of θ .................................................................................................................. 90

Accuracy of G ................................................................................................................. 90

Accuracy of Rp ............................................................................................................... 91

Accuracy of Rs ................................................................................................................ 91

Accuracy of DCR ............................................................................................................. 91

Accuracy of leakage inductance Lk ................................................................................ 91

Accuracy Calculation Examples ...................................................................................... 92

Example 1 ....................................................................................................................... 92

Example 2 ....................................................................................................................... 93

.................................................................................................. 96

RS-232 ............................................................................................................................ 96

USB (USBCDC - Virtual COM ) ........................................................................................ 97

USBTMC ......................................................................................................................... 97

LAN (Ethernet) ............................................................................................................... 97

GPIB (895 Only) .............................................................................................................. 98

Remote Commands ........................................................................................................ 98

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Technical description ...................................................................................................... 99

Handler Operation ........................................................................................................ 100

Electrical features ......................................................................................................... 107

HANDLER Interface Board Circuit ................................................................................ 108

Handler ......................................................................................................................... 110

Operation ..................................................................................................................... 110

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1. General Information

Product Overview

The B&K Precision models 894 and 895 are precision bench LCR meters. They are capable of
measuring the capacitance, inductance and resistance of components with basic accuracy
of 0.05%. These meters have an adjustable test frequency, from 20 Hz to 500 kHz (894) and
20 Hz to 1 MHz (895). With the vivid 4.3-inch TFT LCD, users can operate and read the
measurements easily. This LCR meter is designed to fit standard 19in racks with a 2U form
factor.

The sweep function provides a quick look at the characteristics of the components, allowing
the customer to systematically test the primary and secondary parameters of those
components using up to 201 frequencies. The BIN comparator function helps quickly sort
components up to 10 bins. With built-in USB, RS-232, LAN and GPIB (895 only), these LCR
meters can be remotely controlled to perform daily operations in production, quality
control and laboratory environments.

Features:

• Basic accuracy 0.05%

• Test frequency from 20 Hz to 500 KHz (894) and 1 MHz (895)

• Frequency sweep function

• Bin sorting comparator

• Adjustable measurement speed for fast readout or better accuracy

• Standard USB, Ethernet, RS-232C and GPIB interface (895 only)

• Save and recall up to 40 internal measurement setups

• 4.3” color TFT LCD display

Package Contents

Please inspect the instrument mechanically and electrically upon receiving it. Unpack all
items from the shipping carton, and check for any obvious signs of physical damage that
may have occurred during transportation. Report any damage to the shipping agent
immediately. Save the original packing carton for possible future reshipment. Every
instrument is shipped with the following contents:

1 x Model 894/895 bench LCR meter
1 x AC power cord
1 x 4-wire Kelvin clip test lead
1 x 4-terminal test fixture
1 x Certificate of Calibration
1 x Test Report
1 x Shorting Bar

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Dimensions

Figure 1 - Dimensions

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Front Panel Overview

Power On/Off Switch

Log Key

Cursor

Ground Terminal

Measurement Terminals

Trigger Key

Reset Key

Pass/Fail LED indicators

Numerical Keypad

Menu Keys: MEAS, SETUP and SYSTEM

Softkeys

Copy Key

4.3” TFT Color LCD Display Window

USB Host Port

Auxiliary Keys

Zoom Button

1

4

13 6 7 8 9

14

11

10

15

2

5

12

16

1 2 3

4 5 6 7 8 9 10

11

12

13

14

15

16

Front Panel Description

Figure 2 - Front Panel Overview

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AC Power Input Receptacle

Fuse Box

Chassis Ground Terminal

GPIB Interface (895 only)

Handler Interface

RS-232 Interface

USB Interface

LAN Interface

4 5 6 8 7

3 2 1

1 2 3

4

5 6 7

8

Rear Panel Overview

Rear Panel Description

Figure 3 - Rear Panel Overview

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Display Overview

Main Display Field

Displays measurement parameters and results

Menu Functions

Displays measurement settings

Menu Options

Displays menu options

1 2 3

2

1

3

Display Description

Figure 4 - Display Overview

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Getting Started

The included AC power cord is safety certified for this instrument operating in rated range.
To change a cable or add an extension cable, be sure that it can meet the required power

ratings for this instrument. Any misuse with wrong or unsafe cables will void the warranty.

Before replacing fuse, disconnect AC input power cord first to prevent electric shock.

Only use a fuse of the same rating as required. Using a different rated fuse will damage the
instrument.

Model

Fuse Specification (110 V)

Fuse Specification (220 V)

894

T 4AL, 250 V

T2AL, 250 V

895

T 4AL, 250 V

T2AL, 250 V

Before connecting and powering up the instrument, please review and go through the
instructions in this chapter.

Input Power Requirements

Input Power

The instrument has a selectable AC input that accepts line voltage and frequency input
within:

AC Input: 100-120 VAC or 198-242 VAC
Frequency: 47 – 63 Hz

Before connecting to an AC outlet or external power source, be sure that the fuse is the
appropriate for the mains (refer to Fuse Requirements). Also, verify that the AC power cord,
including the extension line, is compatible with the rated voltage/current and that there is
sufficient circuit capacity for the power supply. Once verified, connect the cable firmly.

Fuse Requirements

An AC input fuse is necessary when powering the instrument. The fuse is located at the
back of the instrument. In the event the fuse needs to be replaced, make sure the AC input
power cord is disconnected from the instrument before replacing. Refer to the table below
for the fuse requirements with either 115 VAC or 230 VAC.

Table 1 - Fuse Requirements

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Fuse Replacement

Fuse box slit

Fuse box

Check/Remove Fuse

- Locate the fuse box next to the AC input connector in the rear panel

- With a small flat blade screwdriver, insert into the fuse box slit to pull and slide out the

fuse box as indicated below.

- Check and replace fuse if necessary.

Figure 5 - Fuse replacement

Leakage current

The leakage current should not be larger than 3.5 mA (AC effective value).

Preliminary Check

Complete the following steps to verify that the instrument is ready for use.

Verify AC Input Voltage

Verify and check to make sure proper AC voltages are available to power the instrument.
The AC voltage range must meet the acceptable specification as explained in previous
section.

Connect Power

Connect AC power cord to the AC receptacle in the rear panel and press the power switch
to the ON position to turn ON the instrument. The instrument will have a boot screen while
loading, after which the main screen will be displayed.

Safety Requirements

The 894/895 are CAT I safety rated.

Normal working conditions: (0

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

~40, relative humidity ≤75%).

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1

3

4

2

Making Measurements

The meter has a 4.3-inch TFT display. The Measurement Display screen is divided into the
following zones:

Figure 6 - Measurement Display Fields

Measurement Display Fields Description

1. Display page name

Indicate the name of the currently displayed page.

2. Soft menu keys

Displays on-screen soft keys for navigating soft menu items.

3. Measurement display field

Displays measurement results.

4. Information

Displays information about signal source and correction.

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Measurement Display Menu

If the component under test is a capacitor, make sure the capacitor has been fully discharged
before connecting it to the instrument. Failing to discharge the capacitor may damage the
instrument and may void the warranty.

To measure a component, connect it to the test leads or insert it into the test fixture (i.e. the 4­wire Kelvin clip test lead or the 1 x 4-terminal text fixture). Press [MEAS], the <MEAS DISPLAY>

page will be displayed on the main screen:

Figure 7 - Measurement Display Menu

The measurement parameters that can be set in this page are:

 Test function (FUNC)
 Test frequency (FREQ)
 Test level (LEVEL)
 Test range (RANGE)
 DC Bias (BIAS)
 Test speed (SPEED)

The Measurement Display field shows the primary and secondary measurements results. In
addition, the “Information” field displays the value of the output voltage and current if the
voltage and current monitors are enabled. Otherwise, the unit will display “OFF”. The CORR
(Correction) field will display the type of correction that is enabled: Open, Short and/or Load.

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Measurement Parameters

Parameter

Description

Cp

Capacitance measured using a parallel
equivalent circuit model

Cs

Capacitance measured using a series
equivalent circuit model

Lp

Inductance measured using a parallel
equivalent circuit model

Ls

Inductance measured using a series
equivalent circuit model

Z

Impedance

Y

Admittance

R

Resistance using a specified AC
frequency and level

G

Conductance

DCR

Resistance using a DC bias.

L2-A*

Primary Inductance

Primary

Measurement

Secondary
Measurement

Measurement
Parameters

The Measurement Parameters field lets the user select different settings for the measurement
to be taken.

Figure 8 - Measurement Function Display

Test results of the primary and secondary parameters are displayed in two lines. The primary
parameter is displayed in the upper line while the secondary parameter is displayed in the lower
line.

Primary Parameters

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L2-B*

Secondary Inductance

*Used with transformer test fixture TL89T1.

Parameter

Description

Q

Quality factor

D

Dissipation factor

Rs

Equivalent Series Resistance (ESR)

Rp

Equivalent Parallel Resistance

X

Reactance

B

Admittance

Θ

Phase Angle

N, 1/N*

Turn Ratio and Polarity

M*

Mutual Inductance

R2

DC Resistance

Primary

Parameter

Series Mode

Combinations

Parallel Mode
Combinations

C

Cs-Q
Cs-D

Cs-Rs

Cp-Q
Cp-D

Cp-Rp

Cp-G

L

Ls-Q

Ls-D
Ls-R

Lp-Q
Lp-D

Lp-Rp

Lp-G

Primary

Parameter

Combinations

Z

d

r

Y

d

r

Secondary Parameters

*Used with transformer test fixture TL89T1.

Parameter Combinations

Table 2 - Primary Parameters

Table 3 - Secondary Parameters

The combinations of primary and secondary parameters, including the series and parallel
combinations are listed below:

Table 4 – Primary Parameter Combinations: Series and Parallel

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R

X

Rp-X

Rp-Q

G-B

N/A

DCR

N/A

L2A*

N

1/N

M

R2

L2B*

N

1/N

M

R2

Table 5 – Additional Primary Parameter Combinations

*Used with transformer test fixture TL89T1.

Selecting Primary and Secondary Parameters

1) Move the cursor to select FUNC field , and the following soft keys will be displayed on

the screen.

 Cp—…→
 Cs—…→
 Lp—…→
 Ls—…→
 ↓

2) Press the soft key corresponding to Cp—…→ to select Cp as the primary parameter,

and the following parameters will be displayed:

 Cp-D
 Cp-Q
 Cp-G
 Cp-Rp
 ←

Press the soft key to select the secondary parameter. Then press ← to return to the
previous menu.

3) Press Cs—…→ to select Cs as the primary parameter, and the following parameters

will be displayed:

 Cs-D

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 Cs-Q
 Cs-Rs
 ←

Press the soft key to select the secondary parameter. Then press ← to return to the
previous menu.

4) Press Lp—…→ to select Lp as the primary parameter, and the following parameters

will be displayed:

 Lp-D
 Lp-Q
 Lp-G
 Lp-Rp
 ←

Press the soft key to select the secondary parameter. Then press ← to return to the
previous menu.

5) Press Ls—…→ to select Ls as the primary parameter, and the following parameters will

be displayed:

 Ls-D
 Ls-Q
 Ls-Rs
 ←

Press the soft key to select the secondary parameter. Then press ← to return to the
previous menu.

6) Press ↓ to see more parameter options, and the following will be displayed.

 Z—…→
 Y—…→
 R—…→
 ↑
 ↓

7) Press Z—…→ to select Z as the primary parameter, and the following parameters will

be displayed:

 Z-d
 Z-r
 ←

Press the soft key to select the secondary parameter. Then press ← to return to the
previous menu.

8) Press Y—…→ to select Y as the primary parameter, and the following parameters will

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be displayed.

 Y-d
 Y-r
 ←

Press the soft key to select the secondary parameter. Then press ← to return to the
previous menu.

9) Press R—…→ to select R as the primary parameter, the following parameters will be

displayed.

 R-X
 Rp-Q
 Rs-Q
 ←

Press the soft key to select the secondary parameter. Then press ← to return to the
previous menu.

10) Press ↓, the following parameters will be shown.

 G-B
 DCR
 L2A—…→
 L2B —…→
 ↑

11) Press G-B to select G as the primary parameter and B as the secondary parameter.

12) Press DCR to select DC resistance as the measurement parameter.

13) Press L2A-…→, the following parameters will be displayed:

 L2A-N
 L2A-1/N
 L2A-M
 L2A-R2
 ←

Press the soft key corresponding to the required parameter. Then press ← to return to the
previous menu.

14) Press L2B-…→. The following parameters will be displayed:

 L2B-N
 L2A-1/N
 L2B-M
 L2B-R2
 ←

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Press the soft key to select the secondary parameter. Then press ← to return to the

Note: When the test function is set to DCR, the FREQ field will display “---”.

Frequency range (F)

Test frequency point

Resolution

20 Hz ≤ F ≤ 99.99 Hz

20.00 Hz, 20.01Hz ……99.99 Hz

0.01 Hz

100 Hz ≤ F ≤ 999.9 Hz

100.0 Hz, 100.1Hz ……999.9 Hz

0.1 Hz

1 kHz ≤ F ≤ 9.999 kHz

1.000 kHz, 1.001 kHz ……9.999 kHz

1 Hz

10 kHz ≤ F ≤ 99.99 kHz

10.00 kHz, 10.01 kHz……99.99 kHz

10 Hz

100 kHz ≤ F ≤ 1 MHz

100.0 kHz, 100.1 kHz……1 MHz

100 Hz

previous menu.

Note: L2A and L2B should be used with transformer test fixture TL89T1.

Test range

The measurement range should be selected in accordance with the impedance value of the
tested LCR component.
The 894/895 have 11 AC measurement ranges: 10Ω, 30Ω, 100Ω, 300Ω, 1kΩ, 3kΩ, 10kΩ,
30kΩ, 100kΩ, 300kΩ, and 1MΩ (895 only).
The 894/895 have 14 DCR measurement ranges: 30mΩ, 100mΩ, 300mΩ, 1Ω, 10Ω, 100Ω,
300Ω, 1kΩ, 3kΩ, 10kΩ, 30kΩ, 100kΩ, 300kΩ, and 1MΩ (895 only).

Setting the test range:

1) Move the cursor to the range field, the following soft keys will be displayed:

 AUTO The soft key is used to set the range mode to AUTO.
 HOLD The soft key is used to switch the AUTO mode to the HOLD mode. In this

mode, the range will be locked in the current measurement range, which is
displayed in the range field.

 ↑(+) The soft key is used to increase the range under HOLD mode.
 ↓(-) The soft key is used to decrease the range under HOLD mode.

2) Use the soft keys to set measurement range.

Test frequency

The frequency range of the 894 meter ranges from 20Hz to 500 KHz, and up to 1 MHz for

895.

Table 6 - Frequency Range, Test Frequency Points and Resolution

Setting the test frequency:

There are two ways to set measurement frequency: soft keys, numeric keys.

1) Move the cursor to the FREQ field, and the following soft keys will be displayed:

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 ↑(++) This is a coarse adjustment soft key used to increase the frequency. Press

Hz

Hz

kHz

kHz

kHz

MHz

20

100

1.0

10

100

1*

25

120

1.2

12

120

30

150

1.5

15

150

*895 only

40

200

2.0

20

200 50

250

2.5

25

250 60

300

3.0

30

300

80

400

4.0

40

400

500

5.0

50

500

600

6.0

60

600*

800

8.0

80

800*

Voltage Level

Resolution

5 mVrms – 100 mVrms

100 μVrms

100 mVrms – 1 Vrms

1m Vrms

this key to change the frequency in the following sequence: 20Hz, 100Hz, 1 kHz, 10
kHz, 100 kHz, 500 KHz (894) and 1 MHz (895).

 ↑(+) This is a fine adjustment soft key used to increase the frequency. Press this

key, to change the frequency between the following values:

Table 7 - Test Frequencies

 ↓(-) This is a fine adjustment soft key used to decrease the frequency. The

selectable frequencies are the same as that of ↑ (+) in the above.

 ↓(--) This is a coarse adjustment soft key used to decrease the frequency. The

selectable frequencies are the same as that of ↑ (++) in the above.

2) Use soft keys or numeric keys to select the frequency. When using numeric keys, the

soft key displays the available frequency units (Hz, kHz and MHz). You can use them to
input the unit after entering the numeric value. If [ENTER] is pressed to input
frequency, the unit defaults to Hz.

Test Signal Level

The test signal level (current or voltage) can be configured using this function. The test signal
values available are the RMS equivalent of the sine wave signal. The corresponding current level
mode value has a linear relationship with the internal resistance.

The test signal level voltage has a valid range from 5 mVrms to 2 Vrms. The resolution will
change according to each range as follows:

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