Hioki 3237, 3237-01, 3239, 3239-01, 3238 Instruction Manual

...

3237,3237-01 3238,3238-01

3239,3239-01

DIGITAL HiTESTER

99 Washington Street Melrose, MA 02176

Phone 781-665-1400 Toll Free 1-800-517-8431

Visit us at www.TestEquipmentDepot.com

Instruction Manual

Nov. 2016 Revised edition 14 3237A981-14 16-11H

* 6 0 0 1 9 5 0 1 E *

Contents

Introduction i Inspection Safety Notes Notes on Use Chapter Summary

Chapter 1 Overview 1

1.1 Product Overview 1

1.2 Major Features

1.3 Names and Functions of Parts

1.3.1 Front Panel 2

1.3.2 Rear Panel 6

Chapter 2 Installation and Preparation 7

2.1 Power Supply and Ground Connection 7

2.2 Test Lead/Clamp Sensor Connection

1 2

2.3 Power On/Off

2.4 Selection of Power-supply Frequency

10 10

Chapter 3 Measurement Procedure 11

3.1 Voltage Measurement 12

3.1.1 DC Voltage Measurement 12

3.1.2 AC Voltage Measurement 12

3.2 2-Terminal Resistance Measurement 13

3.2.1 Resistance Measurement (2-Terminal) 13

3.2.2 Low-power Resistance Measurement (2-Terminal) 14

3.3 4-Terminal Resistance Measurement 15

3.3.1 Resistance Measurement (4-Terminal, on 3239 only) 15

3.3.2 Low-power Resistance Measurement (4-Terminal, on 3239 only) 16

3.4 Continuity Test 16

3.5 Diode Test

3237A981-14

3.6 Frequency Measurement (3238/39)

3.7 Current Measurement (3238/39) 19

3.7.1 DC Current Measurement 19

3.7.2 AC Current Measurement 19

3.8 Clamp Current Measurement 20

3.8.1 DC Clamp Current Measurement (9277/9278/9279/3284/3285) 21

3.8.2 AC Clamp Current Measurement 22

Chapter 4 Basic Functions 23

4.1 Selection of Measurement Range 23

4.2 Switching of Sampling Period

4.3 Zero Adjust function

4.4 Average function

4.5 Trigger Function

4.5.1 Setup for Trigger mode 26

4.5.2 External Trigger 26

4.5.3 Trigger Delay 27

4.5.4 Trigger System 29

23 24 25 26

Chapter 5 Other Functions 31

5.1 Comparator Function 31

5.2 Comparator Buzzer Sound

5.3 Panel Save Function

5.4 Panel Load Function

5.5 Key Operation Sound

5.6 Key Lock Function

34 35 36 37 38

5.7 Remote Function

5.8 System Reset

5.9 Measurement States and Effective Keys

Chapter 6 External Control Terminal/

External output terminal 43

6.1 Explanation of Signal Wires 44

6.2 Timing Chart

6.3 Internal Circuit Configuration

39 40 42

46 48

Chapter 7 RS-232C Interface 49

7.1 Preparing for Data Transfer 51

7.2 Communication

7.3 Command Code Table

7.3.1 Common Command 62

7.3.2 Specific Command 63

7.4 Command Reference 69

7.4.1 Explanation of Command Reference 69

7.4.2 Common Command Messages 70

7.4.3 Specific Command Messages 75

7.5 Initialized Item List 99

7.6 Notes on RS-232C Interface

7.7 Compatibility with the ADVANTEST Digital Multimeter

7.8 Sample Program

53 62

100 102

Chapter 8 GP-IB Interface(3237-01/3238-01/3239-01) 103

8.1 Preparing for Data Transfer 105

8.2 Communication

8.3 GP-IB Command

8.4 Notes of the GP-IB

107 116 117

Chapter 9 Printer Interface 119

9.1 Setup for Interface 120

9.2 Setup for Printer

9.3 Printer Connection Method

9.4 Sample Prints

121 123 124

Chapter 10 Specifications 125

10.1 General Specifications 125

10.2 Accuracy

10.2.1 Accuracy of the 3237 127

10.2.2 Accuracy of the 3238 133

127

10.2.3 Accuracy of the 3239 140

Chapter 11 Maintenance and Service 147

11.1 A-Terminal Fuse Replacement (3238/39) 147

11.2 Power Supply Fuse Replacement

11.3 Cleaning

11.4 Service

148 149 150

Appendix APPENDIX1

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Introduction

Thank you for purchasing the HIOKI "3237, 3238, 3239 DIGITAL HiTESTER."

To obtain maximum performance from the product, please read this manual

first, and keep it handy for future reference.

Inspection

When you receive the product, inspect it carefully to ensure that no damage occurred during shipping. In particular, check the accessories, panel switches, and connectors. If damage is evident, or if it fails to operate according to the specifications, contact your dealer or Hioki representative.

Accessories

L9170-10 TEST LEAD 1 Instruction Manual 1 Power cord 1 Spare fuse 0.5 A (for 100 V, 120 V), 0.25 A (for 220 V, 240 V)

2 A (for the 3238/39) 1

Before using the product the first time, verify that it operates normally to ensure that the no damage occurred during storage or shipping. If you find any damage, contact your dealer or Hioki representative.

Inspection before use

When measuring a dangerous voltage or current, or when a measurement of high reliability is required, always carry out the following confirmation before using.

No damage to the power cord, test lead and the produt itself No inaccurate measurement values are shown when connected to a

measurement target with clear values (non-defective sample, calibrator, etc.) and under the setting for the test conditions used by the customer

NOTE

______________________________________________________________________________________________

Before using the product, make sure that the insulation on the probes is undamaged and that no bare conductors are improperly exposed. Using the product in such conditions could cause an electric shock, so contact your dealer or Hioki

resentative for repair.

_____________________________________________________________________________________________

Safety Notes

This instrument is designed to comply with IEC 61010 Safety Standards,

WARNING

and has been thoroughly tested for safety prior to shipment. However, mishandling during use could result in injury or death, as well as damage to the instrument. Be certain that you understand the instructions and precautions in the manual before use. We disclaim any responsibility for accidents or injuries not resulting directly from instrument defects.

This manual contains information and warnings essential for safe operation of the product and for maintaining it in safe operating condition. Before using the product, be sure to carefully read the following safety notes.

The symbol printed on the product indicates that the user should

refer to a corresponding topic in the manual (marked with the symbol) before using the relevant function.

In the manual, the symbol indicates particularly important

information that the user should read before using the product.

Indicates that dangerous voltage may be present at this terminal.

Indicates a double-insulated device.

Indicates a fuse.

Indicates AC (Alternating Current).

Indicates DC (Direct Current).

Indicates both DC (Direct Current) and AC (Alternating Current).

Indicates a grounding terminal.

Indicates the ON side of the power switch.

Indicates the OFF side of the power switch.

The following symbols in this manual indicate the relative importance of cautions and warnings.

Indicates that incorrect operation presents an extreme hazard that

DANGER

could result in serious injury or death to the user.

Indicates that incorrect operation presents a significant hazard that could result in serious injury or death to the user.

WARNING

CAUTION

NOTE

______________________________________________________________________________________________

Indicates that incorrect operation presents a possibility of injury to the user or damage to the product.

Advisory items related to performance or correct operation of the product.

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iii

Measurement categories

This product complies with CAT II safety requirements. To ensure safe operation of measurement product, IEC 61010 establishes safety standards for various electrical environments, categorized as CAT II to CAT IV, and called measurement categories.

CAT II

CAT III

CAT IV

Primary electrical circuits in equipment connected to a wall outlet via a power cord (portable tools, household appliances, etc.) CAT II covers directly measuring electrical outlet receptacles.

Primary electrical circuits of heavy equipment (fixed installations) connected directly to the distribution panel, and feeders between the distribution panel and outlets.

The circuit from the service drop to the service entrance, then to the power meter and to the primary overcurrent protection device (distribution panel).

Using a measurement product in an environment designated with a highernumbered category than that for which　the product is rated could result in a severe accident, and must be carefully avoided. Use of a measurement instrument that is not CAT-rated in CAT II to CAT IV measurement applications could result in a severe accident, and must be carefully avoided.

______________________________________________________________________________________________

_____________________________________________________________________________________________

Accuracy

The specifications in this manual include figures for "measurement accuracy" when referring to digital measuring instruments, and for "measurement tolerance" when referring to analog instruments.

f.s.

rdg.

dgt.

(maximum display or scale value, or length of scale) Signifies the maximum display (scale) value or the length of the scale (in cases where the scale consists of unequal increments or where the maximum value cannot be defined). In general, this is the range value (the value written on the range selector or equivalent) currently in use.

(displayed or indicated value) This signifies the value actually being measured, i.e., the value that is currently indicated or displayed by the measuring instrument.

(resolution) Signifies the smallest display unit on a digital measuring instrument, i.e., the value displayed when the last digit on the digital display is "1".

______________________________________________________________________________________________

_____________________________________________________________________________________________

Notes on Use

In order to ensure safe operation and to obtain maximum performance from the unit, observe the cautions listed below.

To avoid electric shock, do not allow the product to get wet, and do

WARNING

not use it when your hands are wet. Do not use the product where it may be exposed to corrosive or combustible gases. The product may be damaged or cause an explosion. To avoid electric shock, be sure to connect the protective ground terminal to a grounded conductor.

CAUTION

Do not store or use the product where it could be exposed to direct sunlight, high temperature or humidity, or condensation. Under such conditions, the product may be damaged and insulation may deteriorate so that it no longer meets specifications. This product is not designed to be entirely water- or dust-proof. To avoid damage, do not use it in a wet or dusty environment. Do not use the product near a device that generates a strong electromagnetic field or electrostatic charge, as these may cause erroneous measurements. To avoid damage to the product, protect it from vibration or shock during transport and handling, and be especially careful to avoid dropping.

______________________________________________________________________________________________

_____________________________________________________________________________________________

Chapter Summary

Chapter 1 Overviews

Provides a product overview and gives the names and describes the functions of the component parts.

Chapter 2 Installation and Preparation

Describes ways to turn on power, connect test leads, and set up the powersupply frequency.

Chapter 3 Measurement Procedure

Describes basic measurements.

Chapter 4 Basic Functions

Describes basic functions such as range setup, sampling setup, and so on.

Chapter 5 Other Functions

Describes other functions, including comparator setup, Load Save function, and so on.

Chapter 6 External Control Terminal/ External output terminal

Describes external control executed via the external control terminal and external output terminal.

Chapter 7 RS-232C Interface

Describes external control executed via the RS-232C interface.

Chapter 8 GP-IB Interface

Describes external control executed via the GP-IB interface.

Chapter 9 Printer Interface

Describes output to the optional 9442 PRINTER.

Chapter 10 Specifications

Describes measurement methods designed to achieve maximum performance from the unit.

Chapter 11 Maintenance and Service

Describes general specifications and measurement ranges.

Appendix

Describes services and options for this unit.

______________________________________________________________________________________________

_____________________________________________________________________________________________

Chapter 1

1.1 Product Overview

In addition to measuring functions for DC voltages, AC voltages, resistances, DC currents*, AC currents*, and frequencies*, the 3237/38/39 Digital High Tester comes with a comparator function that is especially useful for line use. The GP-IB interface (3237-01/3238-01/3239-01), RS-232C interface, and the units comparator output permits use of the unit across a wide range of applications, such as parts selection and data acquisition. *: On the 3238/39.

1.2 Major Features

Overview

(1) High-speed measurement and fast OK/NG determination

Allows reduced tact time for the line in high-speed measurements and fast OK/NG determinations. Thirty different setup conditions for the main unit can be saved, including comparator conditions. This makes it possible to determine OK or NG for many sample types being measured with a single unit.

(2) Low-power resistance measurement

The unit enables low-power resistance measurement, with low measurement current and open voltage, to minimize the potential for degraded sample characteristics.

(3) A versatile array of interfaces

The unit comes equipped with a GP-IB interface (3237-01/3238-01/3239-01), RS-232C interface, external output terminal, and external control terminal. Through these interfaces, data can be exchanged with a computer or sequencer.

______________________________________________________________________________________________

1.2 Major Features

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1.3 Names and Functions of Parts

1.3.1 Front Panel

CLAMP

terminal

COM terminal

3237

LED Display

Power switch

CLAMP

terminal

COM terminal

A-terminal

SENSE terminal

CLAMP

terminal

COM terminal

Operation keys

3238

LED Display

Power swtich

Operation keys

3239

LED Display

A-terminal

Operation keys

______________________________________________________________________________________________

1.3 Names and Functions of Parts

Power swtich

_____________________________________________________________________________________________

Operation keys

LPΩ

SHIFT

COMP

M.TRIG

LOAD

SAVE

LOCAL

Selects the DC voltage measurement function.

Selects the AC voltage measurement function.

Selects the 2-terminal resistance measurement function.

Selects the low-power 2-terminal resistance measurement function.

Selects the continuity test function.

Selects the diode test function.

Selects the frequency measurement function. (3238/39)

Selects the DC current measurement function. (3238/39)

Selects the AC current measurement function. (3238/39)

Turns the comparator ON or OFF.

Applies a manual trigger.

Recalls saved information.

Saves the current status.

Clears the remote status.

SMPL

SHIFT

ENT

AUTO

SHIFT+COMP

INT.TRIG

SHIFT+M.TRIG

0ADJ

SHIFT+LOAD

LOCK

SHIFT+LOCAL

AVE

SHIFT+SMPL

CLAMP

SHIFT

Switches the sampling period.

Pressed before shift operation.

Confirms a setting.

Selects Auto Range.

Used to move the cursor indicated by flashing numbers or characters on a setup screen.

Used to increment or decrement the currently flashing value. These buttons are also used to edit character strings in various setup screens, and to switch ranges when a measurement is performed.

Turns the comparator buzzer ON or OFF.

Applies an internal trigger.

Subtracts the offset of a measurement value.

Locks the keys.

Sets the mean of the measurement values.

Selects the DC current measurement function that uses the clamp sensor.

CLAMP

SHIFT

______________________________________________________________________________________________

Selects the AC current measurement function that uses the clamp sensor.

1.3 Names and Functions of Parts

_____________________________________________________________________________________________

Operation keys

4WΩ

SHIFT

4WΩ

SHIFT

SHIFT+ENT

Terminals

COM

CLAMP

SENSE

Switch

POWER

LPΩ

Selects the 4-terminal resistance measurement function. (3239 only)

Selects the low-power 4-terminal resistance measurement function. (3239 only)

Displays the menu screen for selection of the clamp sensor, interfaces, power-supply frequency, etc.

The test lead (black) is connected here for various measurements.

The test lead (red) is connected here to measure voltages, resistances, frequencies, diodes, or clamp currents, or to conduct a continuity test.

The test lead (red) is connected here to measure currents. (3238/39)

The test lead (SENSE) is connected here to measure resistance (4-terminal resistance measurement). (3239)

Turns the power ON ( )orOFF( ).

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1.3 Names and Functions of Parts

_____________________________________________________________________________________________

FUNCTION

LED display

CLAMP

FUNCTION

0ADJ

M.TRIG

AUTO

COMP

SET

FAST

MED

STATUS

SLOW

AVE

LOCK

RMT

SHIFT

COMP

Hi IN Lo

COMP

STATUS

Lights up when a low-power resistance measurement is performed.

Lights up when a DC measurement is performed.

Lights up when a current measurement is performed using the clamp sensor.

Lights up when a AC measurement is performed.

Lights up when a diode test is conducted.

Lights up when a continuity test is conducted.

Lights up when a 4-terminal resistance measurement is performed. (3239)

Lights up when a 2-terminal resistance measurement is performed. (3239)

Lights up when a measurement is in progress with the Zero Adjust function activated.

Lights up when Manual Trigger is selected.

Lights up when Auto Range is selected.

Lights up when the comparator is in use.

Lights up together with COMP when a comparator threshold is set.

Lights up when FAST is selected for the sampling period.

Lights up when MEDIUM is selected for the sampling period.

Lights up when SLOW is selected for the sampling period.

Lights up when the comparator buzzer is turned ON.

Lights up when the Average function is in use.

Lights up when the Key Lock is active.

Lights up when remote control is underway through the RS-232C or GPIB interface.

Lights up when

Displays the comparator result.

: Lights up if the measurement value exceeds the upper-limit value.

: Lights up if the measurement value remains between the upper-

limit and lower-limit values.

: Lights up if the measurement value is smaller than the lower-limit

value.

SHIFT

is pressed.

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1.3 Names and Functions of Parts

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1.3.2 Rear Panel

Power/fuse ratings

3237

Inlet

Stand

RS-232C interface

Power/fuse ratings

3238 3239

External I/O

Inlet

GP-IB interface

Stande

GP-IB interface

RS-232C interface

Power/fuse ratings

NOTE

Inlet

ExternalI/O

Be sure not to bear down too hard on the top of the product when it is tilted upwards. Doing so may damage the stand.

RS-232C interface

The power cord is connected here.

The GP-IB interface is connected here.

The RS-232C interface is connected here.

This is an external output terminal/external control terminal.

Indicates the power ratings and the fuse currently in use.

3237-01 3238-01 3239-01

External I/O

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1.3 Names and Functions of Parts

_____________________________________________________________________________________________

Chapter 2

Installation and Preparation

2.1 Power Supply and Ground Connection

Before turning the product on, make sure the source voltage matches

WARNING

that indicated on the product's power connector. Connection to an improper supply voltage may damage the product and present an electrical hazard. To avoid electrical accidents and to maintain the safety specifications of this instrument, connect the power cord provided only to a 3contact (two-conductor + ground) outlet.

. Confirm the power switch is OFF.

. Make sure the source voltage matches that indicated on the product's

power connector and connect the power cord supplied to AC inlet on the rear panel.

. Plug in the power cord. Insert the plug directly into the outlet.

______________________________________________________________________________________________

2.1 Power Supply and Ground Connection

_____________________________________________________________________________________________

2.2 Test Lead/Clamp Sensor Connection

The terminals do not have sufficient spatial isolation. To avoid

WARNING

electrocution, observe the following precautions.

Connect test leads to the terminals only after shutting off the line power. Note that hazardous voltage may be present at the V CLAMP terminal when using the A-terminal. Be careful to avoid touching the V Note that hazardous voltage may be present at the A-terminal when using the V careful to avoid touching the A-terminal.

When connecting the clamp-on sensor, should the metallic part of the sensor, exposed while the clamp is open, touch the two wires of the line, or if the sensor is used on a bare conductor, may result in a short circuit or electrocution.

CLAMP terminal and SENSE terminal.

CLAMP terminal and SENSE terminal. Be

CAUTION

NOTE

CAUTION

Although CAT III, CAT IV are stated on the L9170-10 TEST LEAD, the DIGITAL HiTESTER is only compatible with CAT I and CAT II. To avoid electrocution, do not measure the lines of CAT III or CAT IV.

To prevent an electric shock accident, confirm that the white or red portion (insulation layer) inside the cable is not exposed. If a color inside the cable is exposed, do not use the cable.

Removable sleeves are attached to the metal pins at the ends of the test leads. The test leads can also be used with the sleeves removed.

Removing and attaching the sleeves

The tips of the metal pins are sharp, so take care not to injure yourself.

Removing the sleeves

Gently hold the bottom of the sleeves and pull the sleeves off. Safely store the removed sleeves so as not to lose them.

Attaching the sleeves

Insert the metal pins of the test leads into the holes of the sleeves, and firmly push them all the way in.

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2.2 Test Lead/Clamp Sensor Connection

_____________________________________________________________________________________________

3238

(1) Voltage measurement/ 2-terminal resistance measurement/

continuity test/ diode test/ frequency measurement

32393237/38

. Disconnect the L9170-10 TEST LEAD

from the sample being measured.

. Connect the black lead to the COM

terminal and the red lead to the V Ω CLAMP terminal.

Black

Red

L9170-10 TEST LEAD

(2) Current measurement

L9170-10 TEST LEAD

Black

3239

Black

Red

. Disconnect the L9170-10 TEST LEAD

from the sample being measured.

. Connect the black lead to the COM

terminal and the red lead to the Aterminal.

3237/38

Black

(3) Clamp current measurement

3239

Red

Clamp sensor connector

(4) 4-terminal resistance measurement

3239

Black

L2107 CLIP TYPE LEAD

Black

Red

. Disconnect the clamp sensor from the

sample being measured.

. Connect the black lead to the COM

terminal and the red lead to the V Ω CLAMP terminal.

. Disconnect the clamp sensor from the

sample being measured.

. Connect 4-terminal test leads like

those of the L2107 as shown in the drawing. Align the triangular mark on the red lead with the red triangular mark on the chassis, and the triangular mark on the black lead with the black triangular mark on the chassis.

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2.2 Test Lead/Clamp Sensor Connection

_____________________________________________________________________________________________

2.3 Power On/Off

(1) How to turn on power

Turn on ( ) the power switch on the front panel. All the LEDs on the front panel will light to indicate the model, software version and power-supply frequency of the unit. The unit readies itself for measurement. After power is turned on, the unit is set to the same measurement conditions in effect when the unit was switched off.

NOTE

Allow the unit to warm up for 60 minutes before starting measurement.

(2) How to turn off power

Turn off ( ) the power switch on the front panel. The measurement conditions will be saved.

NOTE

As long as the unit is in normal measurement or comparator execution modes, the

various conditions will be saved even in the event of a power blackout.

2.4 Selection of Power-supply Frequency

.Press

. Pressing

.Press to display the power-supply frequency setup screen.

SHIFT

."SHIFT" lights up on the display.

ENT

opens the menu screen for entering various settings.

. Pressing causes the frequency power-supply currently set to flash.

"50": 50 Hz "60": 60 Hz

.Press to select a power-supply frequency.

. Pressing

.Press

NOTE

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2.4 Selection of Power-supply Frequency

To properly suppress noise, this product must be set to match the power supply

frequency. Before using the product, make sure the power supply frequency selector is set correctl

ENT

causes "Fr" to flash.

ENT

again to define your selection.

, to avoid erroneous readings.

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Chapter 3

DANGER

Measurement Procedure

Observe the following precautions to avoid electric shock.

Always verify the appropriate setting of the measuring function before connecting the test leads. Disconnect the test leads from the measurement object before changing the measuring function. Clamp sensor/ Clamp-on probe/ Test leads should only be connected to the secondary side of a breaker, so the breaker can prevent an accident if a short circuit occurs. Connections should never be made to the primary side of a breaker, because unrestricted current flow could cause a serious accident if a short circuit occurs. Do not measure an input in excess of the maximum rated working voltage and current, as the resulting heat buildup may damage the product or cause a short-circuit accident. The maximum rated voltage to ground of the V terminal is 600 VAC/DC (CAT II) or 1000 VAC/DC. (Cannot be used with CAT II, CAT III and CAT IV. Can be used when not directly connected to main power sources such as a battery or solar power, and transient overvoltage is below 2.5 kV.) . Do not apply any voltage to this terminal exceeding these ratings. The maximum rated voltage to ground of the COM terminal is 300 VAC/DC (CAT II) or 500 VAC/DC (Cannot be used with CAT II, CAT III and CAT IV. Can be used when not directly connected to main power sources such as a battery or solar power, and transient overvoltage is below 2.5 kV.). Do not apply any voltage to this terminal exceeding these ratings. The maximum rated voltage to ground of the A-terminal is 300 VAC/DC (CAT II) or 500 VAC/DC (Cannot be used with CAT II, CAT III and CAT IV. Can be used when not directly connected to main power sources such as a battery or solar power, and transient overvoltage is below 2.5 kV.). Do not apply any voltage to this terminal exceeding these ratings. The maximum rated voltage to ground of the SENSE terminal is 300 VAC/DC (CAT II) or 500 VAC/DC (Cannot be used with CAT II, CAT III and CAT IV. Can be used when not directly connected to main power sources such as a battery or solar power, and transient overvoltage is below 2.5 kV.). Do not apply any voltage to this terminal exceeding these ratings. To avoid electrical shock, be careful to avoid shorting live lines with the test leads. If the test leads are open-circuited, live high voltage lines cannot be detected. After connecting the test leads, perform continuity tests to confirm that the test leads are not open-circuited. (See "3.4 Continuity Test".)

CLAMP

______________________________________________________________________________________________

_____________________________________________________________________________________________

3.1 Voltage Measurement

The maximum rated working voltage is 1000 VDC/700 VrmsAC (107V

DANGER

Black

Hz). Attempting to measure voltage in excess of the maximum rating could destroy the product and result in personal injury or death.

32393237/38

Red

L9170-10 TEST LEAD

Black

3.1.1 DC Voltage Measurement

. Make sure that "SHIFT" does not light on the display.

.Press

･

Check to make sure that the black lead of the L9170-10 TEST LEAD is connected to the COM terminal and the red lead to the V Ω CLAMP terminal.

Red

.Press to select a range. Or press

(See 4.1 Selection of Measurement Range.)

.Press

SMPL

to select a sampling period.

(See 4.2 Switching of Sampling Period.)

. Connect the test lead to the sample being measured and read the value.

3.1.2 AC Voltage Measurement

. Make sure that "SHIFT" does not light on the display.

.Press

.Press to select a range. Or press

(See 4.1 Selection of Measurement Range.)

.Press

(See 4.2 Switching of Sampling Period.)

SMPL

to select a sampling period.

AUTO

to select Auto Range.

. Connect the test lead to the sample being measured and read the value.

______________________________________________________________________________________________

3.1 Voltage Measurement

_____________________________________________________________________________________________

3.2 2-Terminal Resistance Measurement

DANGER

Black

NOTE

Never apply voltage to test leads and SENSE terminal when the Resistance, Low-power resistance or Continuity Check are selected. Doing so may damage the product and result in personal injury. To avoid electrical accidents, remove power from the circuit before measuring.

32393237/38

Red

L9170-10 TEST LEAD

CLAMP terminal) and the sample to be measured. Connect the outer shield cover to the COM terminal. (Or use a shielded line, such as the 9326 CONNECTION CORD.) In case of using a dial resistor, connect the GUARD terminal to the COM terminal of the unit.

Black

Red

Check to make sure that the black lead of the L9170-10 TEST LEAD is connected to the COM terminal and the red lead to the V Ω CLAMP terminal.

”

3.2.1 Resistance Measurement (2-Terminal)

. Make sure that "SHIFT" does not light on the display.

.Press

.Press to select a range. Or press

(See 4.1 Selection of Measurement Range.)

.Press

(See 4.2 Switching of Sampling Period.)

. Performs zero-ajust for the 3237/38/39.

(See 4.3 Zero Ajust Function.)

. Connect the test lead to the sample being measured and read the value.

."2W" lights up on the display. (3239)

SMPL

to select a sampling period.

AUTO

to select Auto Range.

______________________________________________________________________________________________

3.2 2-Terminal Resistance Measurement

_____________________________________________________________________________________________

3.2.2 Low-power Resistance Measurement (2-Terminal)

. Make sure that "SHIFT" does not light on the display.

.Press

.Press to select a range. Or press

(See 4.1 Selection of Measurement Range.)

.Press

(See 4.2 Switching of Sampling Period.)

. Performs zero-ajust for the 3237/38/39.

(See 4.3 Zero Ajust Function.)

. Connect the test lead to the sample being measured and read the value.

LPΩ

."2W"(3239) and "LP" lights up on the display.

SMPL

AUTO

to select a sampling period.

to select Auto Range.

______________________________________________________________________________________________

3.2 2-Terminal Resistance Measurement

_____________________________________________________________________________________________

(

3.3 4-Terminal Resistance Measurement

DANGER

NOTE

3239

The four terminals of the L2107 CLIP TYPE LEAD Verify that all four terminals (SOURCE+, SOURCE-, SENSE+, and SENSE-) are connected. Also verify that the triangular mark

Black

L2107 CLIP TYPE LEAD

When measuring high resistance, there are cases in which an overload (“OF displayed) occurs owing to external noise. Do not use the unit near fluorescent light or power line. When external noise is high, please shield the red lead (connected to the V CLAMP terminal) and the sample to be measured. Connect the outer shield cover to the COM terminal. (Or use a shielded line, such as the 9326 CONNECTION CORD.) In case of using a dial resistor, connect the GUARD terminal to the COM terminal of the unit.

Red

on the red lead is aligned with the red triangular mark on the chassis, and that the triangular mark on the black lead is aligned with the black triangular mark on the chassis.

”

3.3.1 Resistance Measurement (4-Terminal, on 3239 only)

SHIFT

."SHIFT" lights up on the display.

."4W" lights up on the display.

SMPL

to select a sampling period.

.Press

(See 4.2 Switching of Sampling Period.)

. Performs zero-ajust for the 3237/38/39.

(See 4.3 Zero Ajust Function.)

. Connect the test lead to the sample being measured and read the value.

When clipping a thin line Clipthe line at the tip,

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When clipping a thick line

Clipthe line at the deep,non-

3.3 4-Terminal Resistance Measurement

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3.3.2 Low-power Resistance Measurement (4-Terminal, on 3239 only)

.Press

(See 4.2 Switching of Sampling Period.)

. Performs zero-ajust for the 3237/38/39.

(See 4.3 Zero Ajust Function.)

. Connect the test lead to the sample being measured and read the value.

NOTE

When measurement is performed using the low-power resistance measurement function or continuity test function, the measurement values may not be stable, because the measurement current in this measurement mode is lower than for normal resistance measurement.

3.4 Continuity Test

SHIFT

LPΩ

SMPL

SHIFT

" lights up on the display.

."4W"and"LP" lights up on the display.

to select a sampling period.

NOTE

. Make sure that "SHIFT" does not light on the display.

.Press .

. Connect the test lead to the sample being measured.

The buzzer will beep if the resistance value is below 50 ohms.

The resistance measurement and low-power resistance measurement will display values that include the resistance value of the test lead. Use the Zero-Adjust function to exclude this resistance value.

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3.4 Continuity Test

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3.5 Diode Test

Never apply voltage to test leads when the Diode test is selected. Doing

DANGER

so may damage the product and result in personal injury. To avoid electrical accidents, remove power from the circuit before measuring.

32393237/38

Check to make sure that the black lead of the L9170-10 TEST LEAD is connected to the COM terminal and the red lead to the V Ω CLAMP terminal.

Black

Red

L9170-10 TEST LEAD

.Press

.Press .

.Press

SHIFT

."SHIFT" lights up on the display.

SMPL

to select a sampling period.

Black

Red

(See 4.2 Switching of Sampling Period.)

. Connect the test lead to the sample being measured and read the value.

A normal silicon diode indicates a forward voltage of 0.4 to 0.7 V. In the reverse direction, "OF" will light.

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3.5 Diode Test

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3.6 Frequency Measurement (3238/39)

The maximum rated working voltage is 600 VDC/700 VrmsAC (107V･Hz).

DANGER

Attempting to measure voltage in excess of the maximum rating could destroy the product and result in personal injury or death.

3238

Black

NOTE

3239

Check to make sure that the black lead of the L9170-10 TEST LEAD is connected to the COM terminal and the red lead to the V Ω CLAMP terminal.

Red

L9170-10 TEST LEAD

.Press

.Press to select an attenuator range.

.Press

SMPL

Black

to select a sampling period.

Red

(See 4.2 Switching of Sampling Period.)

. Connect the test lead to the sample being measured and read the value.

Press to set a range for the attenuator circuit (voltage divider circuit).

Input sensitivity is approximately 10% of the selected attenuator range. Check the signal level with the Example: The frequency of a 10 V signal can be measured in the attenuator range of 2 V or 20 V, but not in the attenuator range of 200 V or 700 V.

V function before measuring the frequency.

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3.6 Frequency Measurement (3238/39)

+ 139 hidden pages

Hioki 3237, 3237-01, 3239, 3239-01, 3238 Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Introduction

Inspection

Safety Notes

Notes on Use

Chapter Summary