Hioki 3237 Manuale utente

*60019501E*

Instruction Manual

Nov. 2016 Revised edition 14

3237A981-14 16-11H

DIGITAL HiTESTER

3238,3238-01

3239,3239-01

3237,3237-01

99 Washington Street

Melrose, MA 02176

Phone 781-665-1400

Toll Free 1-800-517-8431

Visit us at www.TestEquipmentDepot.com

Contents

3237A981-14

Introduction i

Inspection i

Safety Notes ii

Notes on Use v

Chapter Summary vi

Chapter 1 Overview 1

1.1 Product Overview 1

1.2 Major Features 1

1.3 Names and Functions of Parts 2

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 8

2.3 Power On/Off 10

2.4 Selection of Power-supply Frequency 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 17

3.6 Frequency Measurement (3238/39) 18

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 23

4.3 Zero Adjust function 24

4.4 Average function 25

4.5 Trigger Function 26

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

Chapter 5 Other Functions 31

5.1 Comparator Function 31

5.2 Comparator Buzzer Sound 34

5.3 Panel Save Function 35

5.4 Panel Load Function 36

5.5 Key Operation Sound 37

5.6 Key Lock Function 38

5.7 Remote Function 39

5.8 System Reset 40

5.9 Measurement States and Effective Keys 42

Chapter 6 External Control Terminal/

External output terminal 43

6.1 Explanation of Signal Wires 44

6.2 Timing Chart 46

6.3 Internal Circuit Configuration 48

Chapter 7 RS-232C Interface 49

7.1 Preparing for Data Transfer 51

7.2 Communication 53

7.3 Command Code Table 62

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 99

7.7 Compatibility with the ADVANTEST Digital

Multimeter 100

7.8 Sample Program 102

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

8.1 Preparing for Data Transfer 105

8.2 Communication 107

8.3 GP-IB Command 116

8.4 Notes of the GP-IB 117

Chapter 9 Printer Interface 119

9.1 Setup for Interface 120

9.2 Setup for Printer 121

9.3 Printer Connection Method 123

9.4 Sample Prints 124

Chapter 10 Specifications 125

10.1 General Specifications 125

10.2 Accuracy 127

10.2.1 Accuracy of the 3237 127

10.2.2 Accuracy of the 3238 133

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 148

11.3 Cleaning 149

11.4 Service 150

Appendix APPENDIX1

_____________________________________________________________________________________________

______________________________________________________________________________________________

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 re

air.

Introduction

Inspection

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.

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

_____________________________________________________________________________________________

______________________________________________________________________________________________

WARNING

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

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.

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.

DANGER

Indicates that incorrect operation presents an extreme hazard that

could result in serious injury or death to the user.

WARNING

Indicates that incorrect operation presents a significant hazard that

could result in serious injury or death to the user.

CAUTION Indicates that incorrect operation presents a possibility of injury to

the user or damage to the product.

NOTE Advisory items related to performance or correct operation of the

product.

Safety Notes

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 following symbols in this manual indicate the relative importance of

cautions and warnings.

iii

_____________________________________________________________________________________________

______________________________________________________________________________________________

CAT II 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.

CAT III Primary electrical circuits of heavy equipment (fixed

installations) connected directly to the distribution

panel, and feeders between the distribution panel

and outlets.

CAT IV The circuit from the service drop to the service

entrance, then to the power meter and to the primary

overcurrent protection device (distribution panel).

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.

Using a measurement product in an environment designated with a higher-

numbered 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.

_____________________________________________________________________________________________

______________________________________________________________________________________________

f.s. (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.

rdg. (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.

dgt. (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".

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.

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