RIGOL DM858 User guide

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Guaranty and Declaration

Trademark Information

RIGOL®is the trademark of RIGOL TECHNOLOGIES CO., LTD.

Notices

• RIGOL products are covered by P.R.C. and foreign patents, issued and pending.

• RIGOL reserves the right to modify or change parts of or all the specifications and pricing

policies at the company's sole decision.

• Information in this publication replaces all previously released materials.

• Information in this publication is subject to change without notice.

• RIGOL shall not be liable for either incidental or consequential losses in connection with the

furnishing, use, or performance of this manual, as well as any information contained.

• Any part of this document is forbidden to be copied, photocopied, or rearranged without prior

written approval of RIGOL.

Product Certification

RIGOL guarantees that this product conforms to the national and industrial standards in China as well as the ISO9001:2015 standard and the ISO14001:2015 standard. Other international standard conformance certifications are in progress.

If you have any problem or requirement when using our products or this manual, please contact RIGOL.

E-mail: [email protected]

Website:

http://www.rigol.com

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Section Description Page

List of Figures................................................................................................................................IV

List of Tables............................................................................................................................... VIII

1 Safety Requirement .........................................................................................................1

1.1 General Safety Summary .................................................................................................................. 1

1.2 Safety Notices and Symbols ............................................................................................................ 3

1.3 Input Terminal Protection Limits .................................................................................................... 3

1.4 Measurement Category .....................................................................................................................4

1.5 Ventilation Requirement ................................................................................................................... 6

1.6 Working Environment ........................................................................................................................6

1.7 Care and Cleaning ............................................................................................................................... 7

1.8 Environmental Considerations ........................................................................................................8

2 Product Features .............................................................................................................. 9

3 Document Overview .....................................................................................................10

4 Quick Start ........................................................................................................................12

4.1 General Inspection ............................................................................................................................12

4.2 Appearance and Dimensions ........................................................................................................ 13

4.3 To Prepare for Use .............................................................................................................................14

4.3.1 To Adjust the Supporting Legs ........................................................................................14

4.3.2 To Connect to Power ...........................................................................................................14

4.3.3 Turn-on Checkout ................................................................................................................ 15

4.3.4 To Set the System Language ............................................................................................16

4.4 Product Overview ..............................................................................................................................16

4.4.1 Front Panel Overview ..........................................................................................................16

4.4.2 Rear Panel Overview ........................................................................................................... 20

4.4.3 User Interface Overview .................................................................................................... 21

4.5 Touch Screen Gestures .................................................................................................................... 24

4.5.1 Drag .......................................................................................................................................... 24

4.5.2 Tap ............................................................................................................................................. 24

4.6 Parameter Setting Method ............................................................................................................ 25

4.7 To Use the Security Lock .................................................................................................................29

5 Front Panel Operation ..................................................................................................31

5.1 To Set the Range ............................................................................................................................... 31

5.2 To Set the Measurement Rate ...................................................................................................... 33

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5.3 Basic Measurement Functions ......................................................................................................33

5.3.1 To Measure DC Voltage ......................................................................................................34

5.3.2 To Measure DC Current ......................................................................................................36

5.3.3 To Measure AC Voltage ......................................................................................................39

5.3.4 To Measure AC Current ......................................................................................................41

5.3.5 To Measure Resistance .......................................................................................................43

5.3.5.1 2WR Measurement ..............................................................................................43

5.3.5.2 4WR Measurement ..............................................................................................45

5.3.6 To Measure Capacitance ....................................................................................................47

5.3.7 To Test Continuity .................................................................................................................49

5.3.8 To Check Diode .....................................................................................................................51

5.3.9 To Measure Frequency/Period .........................................................................................53

5.3.9.1 Measure Frequency .............................................................................................53

5.3.9.2 Measure Period .....................................................................................................55

5.3.10 Any Sensor Measurement .................................................................................................57

5.3.10.1 To Measure the Temperature Sensor ............................................................ 59

5.3.10.2 To Measure User-defined Sensor ................................................................... 64

5.4 2ND Measurement ........................................................................................................................... 68

5.5 Preset Mode ........................................................................................................................................71

5.6 Math Operation ................................................................................................................................. 73

5.6.1 Statistics ...................................................................................................................................74

5.6.2 Limit .......................................................................................................................................... 75

5.6.3 dBm ...........................................................................................................................................77

5.6.4 dB ...............................................................................................................................................79

5.6.5 Relative .................................................................................................................................... 81

5.7 Graph Display ..................................................................................................................................... 82

5.7.1 Trend Graph ........................................................................................................................... 82

5.7.2 Histogram ............................................................................................................................... 84

5.7.3 Bar Chart ................................................................................................................................. 89

5.8 Trigger ................................................................................................................................................... 92

5.8.1 Auto Trig ..................................................................................................................................93

5.8.2 Single ........................................................................................................................................96

5.8.3 External Trigger .....................................................................................................................98

5.9 Screen Image ....................................................................................................................................100

5.10 Customized Menu .......................................................................................................................... 101

5.11 System Utility Function Setting ..................................................................................................102

5.11.1 NET Setting .......................................................................................................................... 103

DM858 Series User Guide

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5.11.2 LXI Setting ............................................................................................................................ 105

5.11.3 Basic System Settings .......................................................................................................106

5.11.4 Instrument Information ................................................................................................... 107

5.11.5 Self-check ............................................................................................................................. 108

5.12 To Store and Load ...........................................................................................................................110

5.12.1 To Save a File .......................................................................................................................111

5.12.2 To Load a File .......................................................................................................................115

5.12.3 Upgrade ................................................................................................................................ 116

5.12.4 Disk Management ............................................................................................................. 117

5.13 To Use the Built-in Help System ................................................................................................ 118

6 Troubleshooting ...........................................................................................................120

7 Remote Control ............................................................................................................121

8 Measurement Tutorial ................................................................................................122

8.1 True RMS AC Measurements ...................................................................................................... 122

8.2 Crest Factor Errors (non-sinusoidal inputs) ........................................................................... 122

8.3 Loading Errors (AC Volts) ............................................................................................................. 123

8.4 Application of the Analog Filter ................................................................................................ 124

9 Specifications ................................................................................................................127

9.1 Specifications ................................................................................................................................... 127

10 Appendix ........................................................................................................................ 138

10.1 Appendix A: Options and Accessories .................................................................................... 138

10.2 Appendix B: Warranty ................................................................................................................... 138

III

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List of Figures

Figure 4.1 Front View ..............................................................................................................13

Figure 4.2 Side View ................................................................................................................13

Figure 4.3 Adjusting the Supporting Legs ......................................................................14

Figure 4.4 Connect to Power ............................................................................................... 14

Figure 4.5 DM858 Front Panel .............................................................................................16

Figure 4.6 Rear Panel ..............................................................................................................20

Figure 4.7 User Interface (Single Display) ....................................................................... 21

Figure 4.8 User Interface (Dual Display) .......................................................................... 22

Figure 4.9 Drag Gesture .........................................................................................................24

Figure 4.10 Tap Gesture .........................................................................................................25

Figure 4.11 English Input Interface ....................................................................................25

Figure 4.12 Chinese Input Interface .................................................................................. 27

Figure 4.13 Numeric Keypad Input Interface .................................................................28

Figure 4.14 To Use the Security Lock ................................................................................30

Figure 5.1 Range and Rate Selection Keys ......................................................................32

Figure 5.2 Range Selection Menu ......................................................................................32

Figure 5.3 DC Voltage Measurement Interface .............................................................35

Figure 5.4 DC Voltage Measurement Connection Diagram ......................................35

Figure 5.5 DC Current Measurement Interface ............................................................. 37

Figure 5.6 DC Current Measurement Connection Diagram ......................................38

Figure 5.7 AC Voltage Measurement Interface ............................................................. 39

Figure 5.8 AC Voltage Measurement Connection Diagram ......................................40

Figure 5.9 AC Current Measurement Interface ..............................................................41

Figure 5.10 AC Current Measurement Connection Diagram ....................................42

Figure 5.11 2WR Measurement Interface ........................................................................43

Figure 5.12 2WR Measurement Connection Diagram ................................................44

Figure 5.13 4WR Measurement Interface ........................................................................46

DM858 Series User Guide

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Figure 5.14 4WR Measurement Connection Diagram ................................................46

Figure 5.15 Capacitance Measurement Setting Interface ..........................................48

Figure 5.16 Capacitance Measurement Connection Diagram ................................. 48

Figure 5.17 Continuity Test Interface ................................................................................50

Figure 5.18 Continuity Test Connection Diagram .........................................................50

Figure 5.19 Diode Measurement Interface .....................................................................52

Figure 5.20 Diode Measurement Connection Diagram ..............................................52

Figure 5.21 Frequency Measurement Interface ............................................................ 54

Figure 5.22 Frequency Measurement Connection Diagram .....................................54

Figure 5.23 Period Measurement Interface .................................................................... 56

Figure 5.24 Period Measurement Connection Diagram .............................................56

Figure 5.25 Voltage, Resistance, TC, Frequency Sensor Connection Method .....58

Figure 5.26 Current Sensor Connection Method ..........................................................58

Figure 5.27 Sensor Measurement Interface ....................................................................59

Figure 5.28 Temperature Sensor Setting Interface .......................................................60

Figure 5.29 RTD Temperature Sensor Setting Interface ............................................. 62

Figure 5.30 Therm Temperature Sensor Setting Interface .........................................63

Figure 5.31 User-defined Sensor Setting Interface ......................................................64

Figure 5.32 User-defined Sensor Name Setting ............................................................65

Figure 5.33 Reference Value Setting Table ......................................................................66

Figure 5.34 Reference Value Setting .................................................................................67

Figure 5.35 Customize the Sensor .....................................................................................67

Figure 5.36 2ND Measurement Setting Interface .........................................................68

Figure 5.37 Main and Secondary Display Areas ............................................................69

Figure 5.38 Preset Interface ................................................................................................. 72

Figure 5.39 Preset Setting Interface ..................................................................................72

Figure 5.40 Math Operation Setting .................................................................................73

Figure 5.41 Statistic Parameter Setting ............................................................................74

Figure 5.42 Statistics Operation Result ............................................................................ 75

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Figure 5.43 Limit Parameter Setting ..................................................................................76

Figure 5.44 Limit Operation ................................................................................................. 77

Figure 5.45 dBm Parameter Setting Interface ................................................................78

Figure 5.46 dBm Operation Results ...................................................................................79

Figure 5.47 dB Operation Parameter Setting .................................................................79

Figure 5.48 dB Operation Results .......................................................................................80

Figure 5.49 Relative operation ............................................................................................81

Figure 5.50 Graph Display .....................................................................................................82

Figure 5.51 Manual Setting Menu ..................................................................................... 83

Figure 5.52 Trend Graph of DCV Measurement ............................................................84

Figure 5.53 Graph Display Interface ..................................................................................85

Figure 5.54 Histogram Setting Interface ......................................................................... 86

Figure 5.55 Histogram Manual Setting ............................................................................87

Figure 5.56 Histogram of DCV Measurement ................................................................88

Figure 5.57 Display Interface ............................................................................................... 89

Figure 5.58 BarChart Setting Interface .............................................................................90

Figure 5.59 Manual Setting of Bar Chart .........................................................................91

Figure 5.60 Bar Chart of DCV Measurement ..................................................................92

Figure 5.61 Trigger Parameter Setting ..............................................................................93

Figure 5.62 Auto Trigger Setting Interface ..................................................................... 94

Figure 5.63 Enable the Hold function ...............................................................................96

Figure 5.64 Single Trigger Parameter Setting ................................................................ 97

Figure 5.65 External Trigger Parameter Setting .............................................................98

Figure 5.66 Storage Interface ............................................................................................101

Figure 5.67 Customized Menu Setting Interface ........................................................102

Figure 5.68 System Utility Function Setting Interface ..............................................103

Figure 5.69 NET Setting ...................................................................................................... 104

Figure 5.70 LXI Setting .........................................................................................................105

Figure 5.71 System Settings Interface ............................................................................106

DM858 Series User Guide

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Figure 5.72 Basic Information of the Instrument ....................................................... 108

Figure 5.73 Self-check Interface .......................................................................................109

Figure 5.74 Keyboard Test ..................................................................................................109

Figure 5.75 Touch Screen Test ...........................................................................................110

Figure 5.76 Screen Test ........................................................................................................110

Figure 5.77 Storage Interface ............................................................................................111

Figure 5.78 Data Saving ......................................................................................................113

Figure 5.79 Setup Saving ....................................................................................................114

Figure 5.80 Load Setting Menu ........................................................................................115

Figure 5.81 Histogram Display of the Loaded Data File .......................................... 116

Figure 5.82 Upgrade Menu ................................................................................................117

Figure 5.83 Disk Management Interface .......................................................................117

VII

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List of Tables

Table 4.1 Power Adaptor Specifications ...........................................................................15

Table 5.2 DC Voltage Measurement Parameter Setting .............................................36

Table 5.3 DC Current Measurement Parameter Setting ............................................. 38

Table 5.4 AC Voltage Measurement Parameter Setting ............................................. 40

Table 5.5 AC Current Measurement Parameter Setting ..............................................42

Table 5.6 2WR Measurement Parameter Setting ..........................................................44

Table 5.7 4WR Measurement Parameter ......................................................................... 46

Table 5.8 Capacitance Measurement Parameter Settings ......................................... 49

Table 5.9 Continuity Test Parameter Settings ................................................................ 51

Table 5.10 Frequency Measurement Settings ................................................................54

Table 5.11 Period Measurement Parameter Setting ....................................................56

Table 5.12 Meas. Value Setting Range ..............................................................................66

Table 5.13 2ND Measurement Parameter Setting ........................................................68

Table 5.14 Basic Measurement Types and 2ND Measurement Types ................... 69

Table 5.15 Description of Math Operations ....................................................................73

Table 5.16 Statistic Parameter Setting ..............................................................................75

Table 5.17 Limit Parameter Setting ....................................................................................76

Table 5.18 dBm Parameter Setting .................................................................................... 78

Table 5.19 dB Parameter Setting ........................................................................................ 80

Table 5.20 Relative Value Setting Range ..........................................................................81

Table 5.21 Max. Number of Samples Displayed in the Histogram .........................88

Table 5.22 Trigger Setting Menu ........................................................................................ 93

Table 5.23 Auto Trigger Menu .............................................................................................94

Table 5.24 Single Trigger Parameter Setting .................................................................. 97

Table 5.25 External Trigger Parameter Setting ...............................................................99

Table 5.26 NET Setting Menu ............................................................................................104

Table 5.27 LXI Setting Menu ..............................................................................................105

DM858 Series User Guide

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Table 5.28 System Setting Menu ......................................................................................107

Table 5.29 Types of Files to be Saved .............................................................................111

Table 8.1 True RMS AC Measurement of Sine, Triangle and Square Waves ..... 122

Table 8.2 Input Resistance at Various Frequencies .................................................... 123

Table 8.3 Analog Filter Error in DCV Measurement ...................................................125

Table 8.4 Analog Filter Error in DCI Measurement .................................................... 125

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DM858 Series User Guide

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Safety Requirement

1.1 General Safety Summary

Please review the following safety precautions carefully before putting the instrument into operation so as to avoid any personal injury or damage to the instrument and any product connected to it. To prevent potential hazards, please follow the instructions specified in this manual to use the instrument properly.

• Use Proper Power Cord.

Only the exclusive power cord designed for the instrument and authorized for use within the destination country could be used.

• Ground the Instrument.

The power adaptor of this instrument is a three-pin power plug, but the instrument housing is not connected to the earth lead of the three-pin power plug. To avoid electric shock, use the ground lead provided in accessories to connect the instrument housing to an electrical ground before performing measurements.

• Observe All Terminal Ratings.

To avoid fire or shock hazard, observe all ratings and markers on the instrument and check your manual for more information about ratings before connecting the instrument.

• Use Proper Overvoltage Protection.

Ensure that no overvoltage (such as that caused by a bolt of lightning) can reach the product. Otherwise, the operator might be exposed to the danger of an electric shock.

• Do Not Operate without Covers.

Do not operate the instrument with covers or panels removed.

• Do Not Insert Objects into the Air Outlet.

Do not insert objects into the air outlet, as doing so may cause damage to the instrument.

• Use the Proper Fuse.

Please use the specified fuses.

• Avoid Circuit or Wire Exposure.

Do not touch exposed junctions and components when the instrument is powered on.

• Do Not Operate with Suspected Failures.

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Safety Requirement

• Provide Adequate Ventilation.

• Do Not Operate in Wet Conditions.

• Do Not Operate in an Explosive Atmosphere.

If you suspect that any damage may occur to the instrument, have RIGOL authorized personnel before further operations. Any maintenance, adjustment or replacement especially to circuits or accessories must be performed by RIGOL authorized personnel.

Inadequate ventilation may cause an increase of temperature in the instrument, which would cause damage to the instrument. So please keep the instrument well ventilated and inspect the air outlet and the fan regularly.

To avoid short circuit inside the instrument or electric shock, never operate the instrument in a humid environment.

To avoid personal injuries or damage to the instrument, never operate the instrument in an explosive atmosphere.

• Keep Instrument Surfaces Clean and Dry.

To avoid dust or moisture from affecting the performance of the instrument, keep the surfaces of the instrument clean and dry.

• Prevent Electrostatic Impact.

Operate the instrument in an electrostatic discharge protective environment to avoid damage induced by static discharges. Always ground both the internal and external conductors of cables to release static before making connections.

• Handle with Caution.

Please handle with care during transportation to avoid damage to keys, knobs, interfaces, and other parts on the panels.

• Only for Measurements within the Specified Measurement Categories.

The measurements are allowed at CAT I 1000 V/CAT II 300 V only. To avoid damage to the instrument and electric shock, do not make measurements out of the voltage range or at CAT III/CAT IV.

WARNING

Equipment meeting Class A requirements may not offer adequate protection to broadcast

services within residential environment.

DM858 Series User Guide

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1.2 Safety Notices and Symbols

Safety Notices in this Manual:

WARNING

Indicates a potentially hazardous situation or practice which, if not avoided, will result in

serious injury or death.

CAUTION

Indicates a potentially hazardous situation or practice which, if not avoided, could result

in damage to the product or loss of important data.

Safety Notices on the Product:

• DANGER

Safety Requirement

It calls attention to an operation, if not correctly performed, could result in injury or hazard immediately.

• WARNING

It calls attention to an operation, if not correctly performed, could result in potential injury or hazard.

• CAUTION

It calls attention to an operation, if not correctly performed, could result in damage to the product or other devices connected to the product.

Safety Symbols on the Product:

Hazardous

Voltage

Safety Warning Protective Earth

Terminal

1.3 Input Terminal Protection Limits

Chassis Ground Test Ground

Protection Limits are defined for the input terminals:

Main Input (HI and LO) Terminals

The HI and LO input terminals are used for voltage, resistance, capacitance, continuity, frequency (period), and diode test measurements. The following two Protection Limits are defined for these terminals:

1. HI to LO Protection Limit: 1000 VDC or 750 VAC, which is also the maximum

voltage measurement. This limit can also be expressed as 1000 Vpk maximum.

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Safety Requirement

2. LO to Ground Protection Limit. The LO input terminal can safely "float" a maximum

of 500 Vpk relative to the ground.

The protection limit for HI terminal is a maximum of 1000 Vpk relative to the ground. Therefore, the sum of the "float" voltage and the measured voltage cannot exceed 1000 Vpk.

Sense (HI Sense and LO Sense) Terminal

HI Sense and LO Sense terminals are used only for four-wire resistance measurements. The following two Protection Limits are defined for these terminals:

1. HI Sense to LO Sense Protection Limit. HI Sense to LO Sense Protection Limit: 200

Vpk.

2. LO Sense to LO Protection Limit. LO Sense to LO Protection Limit: 2 Vpk.

Current Input (I) Terminal

The I and LO terminals are used for current measurements. The I terminal has a protection limit of 10 A(DM858)/3.15 A(DM858E) maximum current flowing through the terminal by the front-panel current input fuse.

CAUTION

The current input terminal will be at approximately the same voltage as the LO terminal

unless the current input fuse is blown. To maintain protection, replace this fuse only with

a fuse of the specified type and rating.

1.4 Measurement Category

Measurement Category

CAT I 1000 V/CAT II 300 V

WARNING

To avoid the danger of electric shock, do not make measurements out of the voltage

range or at CAT III/CAT IV (such as measuring AC motors, motor protectors, frequency

converters, and inverters).

WARNING

For CAT II, the input terminal can be connected to the main circuit (up to 300 VAC). To

avoid electric shock, do not connect the input terminal to the main circuit with a line

voltage above 300 VAC rms. See

DM858 Series User Guide

IEC Measurement Category II

in this section.

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Safety Requirement

IEC Measurement Category II

To protect against the danger of electric shock, DM858/DM858E Digital Multimeter provides overvoltage protection for line-voltage mains connections meeting both of the following conditions:

1. The HI and LO input terminals are connected to the mains under Measurement Category II conditions, defined below.

2. The mains are limited to a maximum line voltage of 300 VAC.

IEC Measurement Category II includes electrical devices connected to mains at an outlet on a branch circuit. Such devices include most small appliances, test equipment, and other devices that plug into a branch outlet or socket. DM858/ DM858E may be used to make measurements with the HI and LO inputs connected to mains in such devices (up to 300 VAC), or to the branch outlet itself.

WARNING

To avoid electric shock, DM858/DM858E may not be used with its HI and LO inputs

connected to mains in permanently installed electrical devices such as the main circuit-

breaker panel, sub-panel disconnect boxes, or permanently wired motors. Such devices

and circuits are subject to overvoltages that may exceed the protection limits of the

DM858/DM858E.

CAUTION

Voltages above 300 VAC may be measured only in circuits that are isolated from mains.

However, transient overvoltages are also present on circuits that are isolated from mains.

DM858/DM858E is designed to safely withstand occasional transient overvoltage up to

2500 Vpk. Do not use this equipment to measure circuits where transient overvoltage

could exceed this level.

Measurement Category Definitions

• Measurement Category I (CAT I) is for measurements performed on circuits not

directly connected to MAINS. Examples are measurements on batteries, electronic devices (especially laptops), and circuits not derived from MAINS, especially protected (internal) MAINS derived circuits.

• Measurement Category II (CAT II) is for measurements performed on circuits

directly connected to low voltage installation. Examples are measurements on household appliances, portable tools and similar equipment.

• Measurement Category III (CAT III) is for measurements performed in the

building installation. Examples are measurements on distribution boards, circuitbreakers, wiring (including cables, bus-bars, junction boxes, switches and socketoutlets) in the fixed installation, and equipment for industrial use and some other equipment. For example, stationary motors with permanent connection to a fixed installation.

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Safety Requirement

• Measurement Category IV (CAT IV) is for measurements performed at the

source of a low-voltage installation. Examples are electricity meters and measurements on primary overcurrent protection devices and ripple control units.

1.5 Ventilation Requirement

This instrument uses the natural convection for heat dissipation. When using the instrument in a bench-top or rack setting, provide at least 10 cm clearance beside, above, and behind the instrument for adequate ventilation.

CAUTION

Inadequate ventilation may cause an increase of temperature in the instrument, which

would cause damage to the instrument. So please keep the instrument well ventilated and

inspect the air outlet regularly.

1.6 Working Environment

Temperature

Operating: 0℃ to +50℃

Non-operating: -20℃ to +70℃

Humidity

≤80% RH, 40℃, without condensation

WARNING

To avoid short circuit inside the instrument or electric shock, never operate the

instrument in a humid environment.

Altitude

Below 3 km

Protection Level Against Electric Shock

ESD ±8kV

Installation (Overvoltage) Category

This product is powered by mains conforming to installation (overvoltage) category II.

WARNING

Ensure that no overvoltage (such as that caused by a bolt of lightning) can reach the

product. Otherwise, the operator might be exposed to the danger of an electric shock.

DM858 Series User Guide

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Safety Requirement

Installation (Overvoltage) Category Definitions

Installation (overvoltage) category I refers to signal level which is applicable to equipment measurement terminals connected to the source circuit. Among these terminals, precautions are done to limit the transient voltage to a low level.

Installation (overvoltage) category II refers to the local power distribution level which is applicable to equipment connected to the AC line (AC power).

Pollution Degree

Pollution Degree 2

Pollution Degree Definition

• Pollution Degree 1: No pollution or only dry, nonconductive pollution occurs.

The pollution has no effect. For example, a clean room or air-conditioned office environment.

• Pollution Degree 2: Normally only nonconductive pollution occurs. Temporary

conductivity caused by condensation is to be expected. For example, indoor environment.

• Pollution Degree 3: Conductive pollution or dry nonconductive pollution that

becomes conductive due to condensation occurs. For example, sheltered outdoor environment.

• Pollution Degree 4: The pollution generates persistent conductivity caused by

conductive dust, rain, or snow. For example, outdoor areas.

Safety Class

Class 2

1.7 Care and Cleaning

Care

Do not store or leave the instrument where it may be exposed to direct sunlight for long periods of time.

Cleaning

Clean the instrument regularly according to its operating conditions.

1. Disconnect the instrument from all power sources.

2. Clean the external surfaces of the instrument with a soft cloth dampened with mild

detergent or water. Avoid having any water or other objects into the chassis via the heat dissipation hole. When cleaning the LCD, take care to avoid scarifying it.

CAUTION

To avoid damage to the instrument, do not expose it to caustic liquids.

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Safety Requirement

WARNING

To avoid short-circuit resulting from moisture or personal injuries, ensure that the

instrument is completely dry before connecting it to the power supply.

1.8 Environmental Considerations

The following symbol indicates that this product complies with the WEEE Directive 2012/19/EU.

The equipment may contain substances that could be harmful to the environment or human health. To avoid the release of such substances into the environment and avoid harm to human health, we recommend you to recycle this product appropriately to ensure that most materials are reused or recycled properly. Please contact your local authorities for disposal or recycling information.

You can click on the following link

https://int.rigol.com/services/services/declaration

to download the latest version of the RoHS&WEEE certification file.

DM858 Series User Guide

Page 21

Product Features

• Max. reading rate: 125 readings/s

• Up to 500,000 points logging memory to record and analyze more data

• 5½-digit reading resolution (120,000 counts)

• True-RMS AC Voltage and AC Current measuring

• Built-in 10 groups of data storage and 10 groups of setup storage

• Strong Math functions, supporting various application protocols

• 7'' color touch screen, displaying dual-measurement results concurrently

• Type-C interface for power charge; compact in size, freeing up your bench

space

• Standard USB and LAN interfaces, supporting Web Control

DM858 series benchtop digital multimeter provides a highly cost-effective test tool for engineers. It features 5.5-digit resolution, max. 125 readings/s, data logging memory of 500,000 points, and 0.03% DCV accuracy (1 year). It provides 11 measurement functions for input signals, 5 Math operations, and 3 graphical display types, satisfying what most experiments and tests require of a multimeter. The 7'' touch screen allows a clear view on measurement results. Its provides USB and LAN interfaces (standard) as well as the Web Control function for you to control the instrument directly, bringing smoother interaction. It is equipped with a Type-C interface for power charge. In addition, it has a compact size and supports the attachment to a bracket, saving valuable bench space for engineers.

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Document Overview

This manual gives you a quick overview of the front and rear panel, user interface as well as basic operation methods of DM858 series digital multimeter.

TIP

For the latest version of this manual, download it from RIGOL official website (

www.rigol.com

Publication Number

UGC11103-1110

Software Version

Software upgrade might change or add product features. Please acquire the latest version of the manual from RIGOL website or contact RIGOL to upgrade the software.

Format Conventions in this Manual

1. Key

http://

The front panel key is denoted by the menu key icon. For example, indicates the "Trig" key.

2. Menu

The menu item is denoted by the format of "Menu Name (Bold) + Character Shading" in the manual. For example, item. You can click or tap

3. Operation Procedures

The next step of the operation is denoted by ">" in the manual. For example,

> Storage indicates first clicking or tapping and then clicking or tapping Storage.

4. Connector

The front/rear panel connector is denoted by "Brackets + Connector Name (Bold)", for example, [EXT TRIG].

Content Conventions in this Manual

Measure to access the "Measure" menu.

Measure indicates the "Measure" menu

DM858 series digital multimeter includes DM858 and DM858E models. The table below shows the main differences between the two models. Their operation methods are the same. Unless otherwise specified, this manual takes DM858 as an example to illustrate the basic operation methods of DM858 series.

DM858 Series User Guide

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Specifications for Different Models

DM858 DM858E

Document Overview

DCV Accuracy (1 year)

Max. Reading Rate

No. of Points in Data Logging Memory

Current Measurement Range

Capacitance Measurement Range

0.030% 0.060%

125 readings/s 80 readings/s

500,000 data points 20,000 data points

100 μA to 10 A 100 μA to 3 A

1 nF to 10 mF 1 nF to 1 mF

Page 24

Quick Start

4.1 General Inspection

1. Inspect the packaging

If the packaging has been damaged, do not dispose the damaged packaging or cushioning materials until the shipment has been checked for completeness and has passed both electrical and mechanical tests.

The consigner or carrier shall be liable for the damage to the instrument resulting from shipment. RIGOL would not be responsible for free maintenance/rework or replacement of the instrument.

2. Inspect the instrument

In case of any mechanical damage, missing parts, or failure in passing the electrical and mechanical tests, contact your RIGOL sales representative.

3. Check the accessories

Please check the accessories according to the packing lists. If the accessories are damaged or incomplete, please contact your RIGOL sales representative.

Recommended Calibration Interval

RIGOL suggests that the instrument should be calibrated every 12 months.

DM858 Series User Guide

Page 25

4.2 Appearance and Dimensions

266 mm

165 mm

Quick Start

Figure 4.1 Front View

80 mm

Figure 4.2 Side View

Page 26

Quick Start

4.3 To Prepare for Use

4.3.1 To Adjust the Supporting Legs

Adjust the supporting legs properly to use them as stands to tilt the multimeter upwards for stable placement of the multimeter as well as better operation and observation. You can also fold the supporting legs when the instrument is not in use for easier storage or shipment, as shown in the figure below.

(a) Unfold the supporting legs

Figure 4.3 Adjusting the Supporting Legs

4.3.2 To Connect to Power

The power requirements of the multimeter are DC, 12 V, 3 A. Please use the power adaptor provided in the accessories to connect the multimeter to the AC power source (100 V to 240 V, 50 Hz to 60 Hz), as shown in the figure below.

Supporting

Legs

(b) Fold the supporting legs

DM858 Series User Guide

Power Cord Connector

Figure 4.4 Connect to Power

Page 27

Table 4.1 Power Adaptor Specifications

Model Ratings

Quick Start

PA-1650-58LT

(LITE-ON TECHNOLOGY, INC)

ADP-65KE B

(DELTA ELECTRONICS, INC)

CAUTION

The power adaptor provided in accessories can only be used to power RIGOL instruments.

Do not use it for mobile phone and other devices.

WARNING

To avoid electric shock, please ensure that the instrument is correctly grounded.

4.3.3 Turn-on Checkout

After the instrument is connected to the power source, press the power key at the lower-left corner of the front panel to power on the instrument. During the start-up process, the instrument performs a series of self-tests. After the self-test, the splash screen is displayed.

Input: AC, 100 V to 240 V, 50 Hz to 60 Hz, 1.6 A

Output: 3 A@5 V/9 V/12 V/15 V, 3.25 A@20 V

Input: AC, 100 V to 240 V, 50 Hz to 60 Hz, 1.7 A

Output: 3 A@5 V/9 V/12 V/15 V, 3.25 A@20 V

• Reboot: Click or tap > Reboot. Then a prompt message "Are you sure to

reboot?" is displayed. Click or tap

OK to restart the instrument.

• Shutdown:

- Click or tap > Shutdown. Then a prompt message "Are you sure to shutdown?" is displayed. Click or tap OK to shut down the instrument.

- Press and a prompt message "Are you sure to shutdown?" is displayed.

Click or tap

OK to shut down the instrument.

- Press twice to shut down the instrument.

- Press for three seconds to shut down the instrument.

TIP

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Quick Start

You can also click or tap > System > Settings and set the "Power Status" to "ON". The

instrument powers on once connected to power.

4.3.4 To Set the System Language

This product supports multiple languages. You can click or tap > System > Settings > Language to select the system language.

4.4 Product Overview

Unless otherwise specified, this chapter takes DM858 as an example to introduce the appearance and dimensions, front and rear panels, and user interface of DM858 and DM858E.

4.4.1 Front Panel Overview

4 5

1. 7-inch Capacitive Touch Screen

Displays the menu and parameter settings of the currently enabled function, system state, prompt messages, and other information.

2. Auxiliary Function Keys

DM858 Series User Guide

Figure 4.5 DM858 Front Panel

Page 29

Quick Start

: indicates the trigger setting key. Press this key to open the trigger setting menu. You can set the trigger mode (auto, single, and external), enable the reading hold function, set the number of samples per trigger, set the delay time prior to reading, the edge of the trigger input signal, and trigger output.

: indicates the system utility function setting. Press this key to open the system utility setting menu. You can set the basic system settings and view the system information.

: indicates the math operation key. Press this key to open the math operation menu. You can perform the math operation (limit, statistics, dBm, and dB) on the measurement results.

: indicates the storage operation key. Press this key to open the storage setting key. You can save, load, upgrade the file; perform the disk management operation to copy, cut, or delete files.

: indicates the measurement setting key. Press this key to open the measurement parameter setting menu. You can configure the parameters for the current measurement item.

: indicates the Help key. Press this key to enter the Help documentation. You can get its help information by clicking on the link for the introduction of the specified function.

3. Measurement Function Keys

: Press this key to enable the DC voltage (DCV) measurement.

: Press this key to enable the AC voltage (ACV) measurement.

: Press this key to enable the DC current (DCI) measurement.

: Press this key to enable the AC current (ACI) measurement.

: Press this key to enable the 2-wire resistance (Ω 2W) measurement. Press

> to enable the 4-wire resistance (Ω 4W) measurement.

: Press this key to enable the capacitance measurement. Press >

to enable any sensor measurement.

: Press this key to enable the continuity measurement. Press >

to enable the diode measurement.

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Quick Start

: Press this key to enable the frequency measurement. Press >

to enable the period measurement.

: Press this key and then press the specified secondary function to enable

the secondary measurement function. Press > to preset the current instrument configuration, save it, and apply the configuration.

Under some of the measurement function keys are printed with the

specified alternative function names or labels. To enable the specified function

displayed under the key, first press , and then press the specified function key. For example, as shown on the front panel, 4-wire resistance measurement label is displayed under the 2-wire resistance measurement key. To enable the 4-

wire impedance measurement, first press

, and then press .

4. Confirmation Key

: Press this key to confirm the current parameter settings.

5. Back Key

: Press this key to exit the current operation or close the current dialog box

(if exists).

6. Range Selection and Arrow Keys

: Press this key to enable the auto range.

: indicates the Up/Down arrow keys.

Press the Up/Down arrow keys to increase/decrease the range manually.

In measuring DCV, DCI, ACV, ACI, Frequency or Period, you can use the Left/Right arrow keys to increase/decrease the measurement speed.

7. Single/Local Key

unless you press it once again. To make the instrument to switch to the local mode, press the Shift key first, and then press this key.

8. Auto Trigger/Reading Hold Key

DM858 Series User Guide

: indicates the Left/Right arrow keys.

: Press Single to trigger one single acquisition and will not trigger again

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Quick Start

: Press this key to switch between auto trigger and readings hold functions.

- Run: The key is always illuminated and remains the auto-trig state unchanged.

In this state, the instrument continues acquiring data at the specified speed based on the current settings.

- Hold: The key is blinking constantly and the acquisition stops. The

measurement data are displayed on the screen.

9. Signal Input Terminals

The signals (devices) under test are input to the instrument via these terminals. The measurement connection methods are different for different objects under test.

10. Current Input Fuse

The front-panel current input fuse allows a max. of 10 A(DM858)/3.15 A(DM858E) protection limit. Once the input current exceeds 13.5 A(DM858)/4.05 A(DM858E), the fuse blows out.

11. USB HOST Interface

Allows to connect the USB storage device (FAT32 or NTFS format) or the mouse.

- USB storage device: imports or exports data (e.g. software update, waveforms,

setups, or screenshot files).

- Mouse: It can be connected to the instrument to realize remote control.

12. Power Key

Powers on or off the instrument.

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Quick Start

4.4.2 Rear Panel Overview

Figure 4.6 Rear Panel

1. VM COMP Output Interface

The multimeter outputs a pulse via [VM Comp] connector after each

measurement when VM output is enabled. To enable the VM output, press on the front panel (you can also click or tap the Trigger label at the bottom of the screen to enter the trigger setting interface), then click or tap "ON" for the Output menu to enable the VMC output.

2. External Trigger Input Interface

Triggers the multimeter by connecting a pulse via the [EXT TRIG] connector after external trigger is selected. To enable the external trigger, click or tap to select

External.

3. LAN Interface

Connects the instrument to network via this interface. The instrument is in compliance with the standards specified in used to set up a test system with other standard devices. Then you can use the Web Control to send the SCPI commands to control the instrument.

4. USB DEVICE Interface

Connects the instrument to the PC via this interface. Then you can use the PC software to send the SCPI commands or use the user-defined programming to control the instrument.

LXI Device Specification 2011

. It can be

5. USB Type-C Power Interface

DM858 Series User Guide

Page 33

The power requirements of the multimeter are DC, 12 V, 3 A. Please use the power adaptor provided in the accessories to connect the multimeter to the AC power source (100 V to 240 V, 50 Hz to 60 Hz).

6. Security Lock Hole

You can lock the instrument to a fixed location by using the security lock (please purchase it by yourself) via the lock hole.

7. Ground Terminal

Connects with the instrument chassis and ground lead (power cord ground terminal), which is in the grounded state.

8. Mounting Screw Holes (VESA 100 x 100)

Mounts the multimeter to the bracket with the screws.

4.4.3 User Interface Overview

Quick Start

9 10

Figure 4.7 User Interface (Single Display)

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Quick Start

Figure 4.8 User Interface (Dual Display)

1. Main Measurement Result Display

Displays the measurement result of the current main measurement item.

2. Main Measurement Item

Displays the main measurement item. Click or tap the label, the main measurement items are displayed. Click or tap to select the specified main measurement item to be displayed in the main display area.

3. Main Measurement Range Selection

Displays the measurement range for the specified main measurement item.

4. Operating Status

Displays the current operating status of the instrument. It can be Auto Trig, Single Trig, Ext Trig, Hold, or Stop.

5. Measurement Speed Selection

Displays the current measurement speed. Click or tap the label to select Slow, Medium, or Fast from the drop-down list.

6. "Relative" Tab

Click or tap the tab to enable or disable the relative operation.

7. "Shift" Tab

Press highlighted.

8. "2ND" Tab

DM858 Series User Guide

on the front panel to enable the Shift key. The "Shift" tab is

Page 35

Quick Start

When you press the 2ND key on the front panel, the "2ND" tab is highlighted.

9. "Run/Hold" Tab

Click or tap the "Run/Hold" tab to switch the status from Run to Hold. You can also press Run/Hold on the front panel to switch the status from Run to Hold.

10. "Single" Tab

Click or tap the "Single" tab to initiate one single trigger. You can also press Single on the front panel to initiate one single trigger.

11. Notification Area

Displays the USB storage device icon, LAN connection, sound icon, and remote control icon. Click or tap the area, the system setting menu is displayed.

USB storage device icon: When a USB storage device is detected,

displayed.

LAN connection icon: When the LAN interface is successfully connected, is displayed.

- Sound icon: In the "System" menu, click or tap

Settings > Beeper to enable or

disable the sound. When the sound is turned on, will be displayed; when off,

will be displayed. Clicking or tapping the sound icon can also enable or

disable the sound.

- Remote control icon: When you control the instrument remotely,

displayed.

- Time: When you enable to display the time information, the system time is

displayed.

12. Shortcut Menus

Provides four fixed shortcut menus (

Measure, Display, Math, and Trigger) and

will be

two customized menus. You can click or tap to customize the shortcut menu that you want to add here.

13. Function Navigation Icon

Click or tap the icon to enter the function navigation menu. Click or tap the desired menu to enter the specified menu setting interface.

14. Main-Secondary Measurement Item Switchover Icon

When you enable the 2ND measurement, click or tap this icon to switch between the main measurement item and the secondary (2ND) measurement item.

15. Secondary (2ND) Measurement Range

Displays the measurement range of the 2ND measurement item when the 2ND measurement is enabled.

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Quick Start

16. Secondary (2ND) Measurement Result Display

Displays the measurement result of the 2ND measurement item when the 2ND measurement is enabled.

17. Secondary (2ND) Measurement Item

Displays the secondary (2ND) measurement item. When you enable the 2ND measurement, click or tap the label, then the 2ND measurement menu is displayed.

4.5 Touch Screen Gestures

The instrument's capacitive touch screen makes operation and configuration easy and flexible. It features great convenience, high flexibility, and great sensitivity. The actions supported by the touch screen controls include dragging and tapping.

4.5.1 Drag

Use one finger to select the object, and then drag the object to a destination place, as shown in position (e.g. numeric keypad).

4.5.2 Tap

Use one finger to tap the symbol or characters on the screen slightly, as shown in

Figure 4.10

Figure 4.9

. With the Tap gesture, you can perform the following operations:

. You can also drag the window controls to change the window

Figure 4.9 Drag Gesture

• Tap the menu displayed on the screen to operate on the menu.

• Tap the function navigation icon at the lower-left corner of the touch screen to

• Tap the displayed numeric keypad to set the parameters.

• Tap the virtual keypad to set the filename.

DM858 Series User Guide

enable the function navigation.

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Quick Start

• Tap the close button at the upper-right corner of the message box to close the

prompt window.

• Tap other windows on the touch screen and operate on the windows.

Figure 4.10 Tap Gesture

4.6 Parameter Setting Method

Tap the input field of the parameter, then a virtual keypad is displayed. Input the values to complete the parameter settings.

Input Chinese and English

You can use the Chinese/English input method to input a name.

• Input English

Capital Switch

Input Area

Letters Delete

Input Method

Number Switch

Space

Confirm

Figure 4.11 English Input Interface

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Quick Start

1. Select English input method

First check the input method type. If it shows "En/中", then go to Step 2; if it shows "中/En", click or tap the input method switchover key to switch to "En/ 中" (English input method).

2. Clear the name input area

If there is no character in the "Name Input Area", please go to the next step. If there are characters in the "Name Input Area", click or tap the Backspace key to delete all the characters from the "Name Input Area" in order.

3. Input the upper-case letter

If you want to input an upper-case letter, first use the Caps key to switch between the upper-case and lower-case mode. If the Caps key is selected, input the upper-case letter with the virtual keypad. If not, first click or tap the Caps key to ensure it is selected, then input the upper-case letter. All the input letters will be displayed in the "Name Input Area".

Input the lower-case letter

Refer to the operation specified in the previous step. If the Caps key is not selected, directly input the lower-case letter.

5. Input numbers or symbols

If the letter keypad is displayed, you need to click or tap the numeric switchover key to switch to the numeric keypad, and input numbers or symbols with the numeric keypad. All the input letters will be displayed in the "Name Input Area".

6. Modify or delete the unwanted characters that have been input

During the name input process, you can modify or delete the unwanted character if necessary. To delete the characters that have been input, click or tap the Backspace key in the virtual keypad to delete the characters. To modify the input characters, delete the unwanted characters and input the desired characters again.

You can directly move the cursor to the character to be modified or deleted, delete the desired character or input the new characters after deleting the unwanted character.

• Input Chinese Characters

DM858 Series User Guide

7. Confirm the input

After completing the input operation, click or tap OK.

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Quick Start

Input Area

Chinese character selection area

Figure 4.12 Chinese Input Interface

1. Select Chinese input method

First check the Chinese and English Characters type. If it shows "中/En", then go to Step 2; if it shows "En/中", click or tap the input method switchover key to switch to "中/En" (Chinese input method).

2. Clear the name input area

3. Input Chinese characters

Click or tap the characters in the virtual keypad to input Pinyin into the input area, then the characters to be selected will be displayed in the Chinese character selection area. Slide to view more Chinese characters for you to choose. Select the desired Chinese character, and then the selected character will be displayed in the input area.

4. Modify or delete the unwanted characters that have been input

5. Confirm the input

After completing the input operation, click or tap OK.

Input a Value

When setting or modifying a parameter, use the pop-up numeric keypad to input an appropriate value.

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Quick Start

• Click or tap the value or unit in the virtual numeric keypad to complete the input.

Input Area

Delete

Clear

Enter

Decimal Point

Number Key

Plus or minus sign

Unit(Optional)

Figure 4.13 Numeric Keypad Input Interface

After you input all the values and select the desired units, the virtual numeric keypad is turned off automatically. This indicates that you have completed parameter setting. In virtual the numeric keypad, you can perform the following operation:

1. Input Area

Click or tap the desired number and the desired value is input in this area.

2. Number Key

There are 10 numbers in the numeric key area. Click or tap the number to input the desired value.

3. Decimal Point

- To input a decimal number less than 1, input the decimal point first and then

add a number.

- To input a real number with decimals, input an real number first and then add a

- The dot can be added to the specified position when you input a value that is

- It is not allowed to input several decimal points.

4. Plus or minus sign (±)

DM858 Series User Guide

decimal point. The number of zero digits is automatically added after the

decimal point according to the rules of the specified parameter.

not an integer.

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Quick Start

Your first click or tap of the sign will input a minus (-) sign, the second time of click or tap of it will input a plus sign, but the plus sign is always omitted for the number display.

5. Unit

Click or tap the desired unit.

6. Enter

After inputting the file or folder name, click or tap Enter directly to confirm the name input. Then it automatically goes to the previous page.

7. Clear (C)

Click or tap C to clear all the input.

8. Delete (x)

Click or tap this icon to clear the input. Move the cursor to the position of the number that needs to be deleted, then click or tap this icon to clear the digit ahead of the cursor.

4.7 To Use the Security Lock

If necessary, you can lock the instrument to a fixed location by using a standard laptop security lock (please purchase it by yourself), as shown in the figure below.

The method is as follows: align the lock with the lock hole and plug it into the lock hole vertically, turn the key clockwise to lock the instrument, and then pull the key out.

Page 42

Quick Start

Security Lock Hole

Figure 4.14 To Use the Security Lock

CAUTION

Please do not insert other objects into the security lock hole to avoid damaging the

instrument.

DM858 Series User Guide

Page 43

Front Panel Operation

•

To Set the Range

•

To Set the Measurement Rate

•

To Measure DC Voltage

•

To Measure AC Voltage

•

To Measure DC Current

•

To Measure AC Current

•

To Measure Resistance

•

To Measure Capacitance

•

To Test Continuity

•

To Check Diode

•

To Measure Frequency/ Period

•

Any Sensor Measurement

•

Preset Mode

•

Trigger

•

Math Operation

•

To Store and Load

•

System Utility Function Setting

5.1 To Set the Range

For the specified measurement item, the range can be set to Auto or specified values. You can set the range to Auto, and then the proper range for the current measurement will be automatically selected. It is convenient for you to make measurements. You can also select a specified range manually to obtain higher reading precision.

The range selection keys are located at the right part of the front panel, as shown in the figure below.

Page 44

Front Panel Operation

Figure 5.1 Range and Rate Selection Keys

Operation Method:

Auto: Press to set the range to Auto.

Specified range selection: Press or to select the available range.

You can also set the range for each measurement item in the specified measurement

interface.

For each measurement item displayed on the screen, click or tap the Measure label at the bottom of the screen to enter the specified measurement item interface. Click or tap the drop-down list of

Range to select AUTO or the specified range value.

Remarks:

• When the input signal exceeds the current range (except the Frequency

DM858 Series User Guide

Figure 5.2 Range Selection Menu

measurement), a message "OVERLOAD" is displayed on the screen.

Page 45

• The range of the Frequency is from 20 Hz to 100 kHz. Once exceeding the range,

the instrument does not display the Overload prompt message, but the accuracy

of the measurement results cannot be guaranteed.

• The range is automatically set to AUTO after a reset.

• Auto range is recommended if you are not sure about the measurement range

so as to protect the instrument and obtain accurate data.

• The ranges for continuity test and diode measurement are fixed. The fixed range

for Continuity test is 1 kΩ; and the fixed range of DIODE measurement is 2.1 V.

5.2 To Set the Measurement Rate

Front Panel Operation

The multimeter provides three measurement rates: Fast, Medium, and Slow.

The measurement rate can be adjusted by using the Left and Right arrow keys on the

front panel. Press to increase the rate and press to decrease the rate.

Remarks:

1. Three measurement rates are available to choose for the DCV, DCI, ACV, ACI, 2WR,

and 4WR measurements.

2. The reading resolution is correlated to the measurement rate.

- Slow corresponds to 5.5 reading resolution;

- Medium and Fast correspond to 4.5 reading resolution;

- Sensor has a fixed 5.5 reading resolution which corresponds to Slow;

- Continuity and Diode have a fixed 4.5 reading resolution which corresponds to

Fast;

- Frequency/Period has a fixed 5.5 reading resolution which corresponds to Slow;

- Capacitance has a fixed 3.5 reading resolution which corresponds to Slow.

5.3 Basic Measurement Functions

The basic measurement functions of the instrument include:

•

To Measure DC Voltage

Page 46

Front Panel Operation

•

To Measure AC Voltage

•

To Measure DC Current

•

To Measure AC Current

•

To Measure Resistance

•

To Measure Capacitance

•

To Test Continuity

•

To Check Diode

•

To Measure Frequency/Period

•

Any Sensor Measurement

5.3.1 To Measure DC Voltage

The instrument can measure up to 1,000 V DC voltage. The following section introduces the connection methods and measurement methods of DC voltage.

NOTE

DCV measurement is selected by default.

Operation Procedures:

1. To enter the DC voltage measurement interface, perform either one of the

following two operations.

- Press on the front panel;

- Click or tap the main measurement item shown at the left part of the main

display area. The measurement items are displayed. Click or tap to select

DM858 Series User Guide

to enter the DC voltage interface.

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Front Panel Operation

Figure 5.3 DC Voltage Measurement Interface

2. Connect red lead to terminal Input-HI and black lead to terminal Input-LO, as

shown in the figure below.

Figure 5.4 DC Voltage Measurement Connection Diagram

3. Click or tap to set the measurement parameters of DC voltage: Range,

Impedance (available to set when the Range is not set to Auto), and Rate.

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Front Panel Operation

Table 5.2 DC Voltage Measurement Parameter Setting

Parameter Description

Range* Auto, 100 mV, 1 V, 10V, 100 V, 1000V

Available to set when the Range is a specified value rather than Auto.

10 GΩ, 11.2 MΩ

Impedance

- When you select "11.2 MΩ", the input impedance for all the

ranges is 11.2 MΩ.

- When you select "10 GΩ", the input impedance for 100 mV

and 1 V ranges is "10 GΩ", but the input impedance for the 10V, 100 V, 1000V ranges is "11.2 MΩ".

Rate Fast, Medium, Slow

NOTE

- 20% over range on all ranges except 1000 V range.

- The range can be set to Auto or a specified value (available range options for Range

menu).

- A 1000 V input protection is available in all ranges and a 20% overrange is available on

all ranges except 1000 V.

- If the reading exceeds 1000 V in 1000 V range, "OVER LOAD" will be displayed.

4. Click or tap to enable or disable the relative operation function. When

enabled, the displayed reading value is the result obtained by subtracting the set relative value from the actual measurement value. For the relative value setting methods, refer to descriptions in "

Math Operation

5. Read the measured value

When reading the measurement results, you can use the arrow keys to switch the reading rate.

6. Hold the reading data

Press

to run and hold the reading data displayed on the screen.

5.3.2 To Measure DC Current

The instrument can measure up to 10 A(DM858)/3 A(DM858E) DC current. The following section introduces the connection methods and measurement methods of DC Current.

DM858 Series User Guide

Page 49

Front Panel Operation

Operation Procedures:

1. To enter the DC current measurement interface, perform either one of the

following two operations.

- Press on the front panel;

- Click or tap the main measurement item shown at the left part of the main

display area. The measurement items are displayed. Click or tap to select

to enter the DC current interface.

Figure 5.5 DC Current Measurement Interface

2. Connect red lead to terminal Input-I and black lead to terminal Input-LO, as shown

in the figure below.

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Front Panel Operation

Figure 5.6 DC Current Measurement Connection Diagram

3. Click or tap to set the measurement parameters of DC current: Range and

Rate.

Table 5.3 DC Current Measurement Parameter Setting

Parameter Remarks

Range*

Auto, 100 μA, 1 mA, 10 mA, 100 mA, 1 A, 10 A (DM858)/3 A (DM858E)

Rate Fast, Medium, Slow

NOTE

20% over range on all ranges except 10 A range. The range can be set to Auto or the given

specified values.

4. Click or tap to enable or disable the relative operation function. When

enabled, the displayed reading value is the result obtained by subtracting the set relative value from the actual measurement value. For the relative value setting methods, refer to descriptions in "

Math Operation

5. Read the measured value

When reading the measurement results, you can use the arrow keys to switch the reading rate.

6. Hold the reading data

Press

DM858 Series User Guide

to run and hold the reading data displayed on the screen.

Page 51

5.3.3 To Measure AC Voltage

The instrument can measure up to 750 V AC voltage. The following section introduces the connection methods and measurement methods of AC voltage.

Operation Procedures:

1. To enter the AC voltage measurement interface, perform either one of the

following two operations.

- Press on the front panel;

- Click or tap the main measurement item shown at the left part of the main

display area. The measurement items are displayed. Click or tap to select

Front Panel Operation

to enter the AC voltage interface.

Figure 5.7 AC Voltage Measurement Interface

2. Connect red lead to terminal Input-HI and black lead to terminal Input-LO, as

shown in the figure below.

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Front Panel Operation

Figure 5.8 AC Voltage Measurement Connection Diagram

3. Click or tap to set the measurement parameters of AC voltage: Range and

Rate

Table 5.4 AC Voltage Measurement Parameter Setting

Parameter Description

Range* Auto, 100 mV, 1 V, 10 V, 100 V, 750 V

Rate Fast, Medium, Slow

NOTE

- 20% over range on all ranges except 750 V range.

- The range can be set to Auto or a specified value (available range options for Range

menu).

- A 750 V input protection is available in all ranges and a 20% overrange is available on all

ranges except 750 V.

- If the reading exceeds 750 V in 750 V range, "OVER LOAD" will be displayed.

4. Click or tap to enable or disable the relative operation function. When

enabled, the displayed reading value is the result obtained by subtracting the set relative value from the actual measurement value. For the relative value setting methods, refer to descriptions in "

5. Read the measured value

DM858 Series User Guide

Math Operation

Page 53

When reading the measurement results, you can use the arrow keys to switch the reading rate.

6. Hold the reading data

Press to run and hold the reading data displayed on the screen.

5.3.4 To Measure AC Current

The instrument can measure up to 10 A(DM858)/3 A(DM858E) AC current . The following section introduces the connection methods and measurement methods of AC current.

Operation Procedures:

1. To enter the AC current measurement interface, perform either one of the

following two operations.

Front Panel Operation

- Press on the front panel;

- Click or tap the main measurement item shown at the left part of the main

display area. The measurement items are displayed. Click or tap to select

to enter the AC current measurement interface.

Figure 5.9 AC Current Measurement Interface

2. Connect red lead to terminal Input-I and black lead to terminal Input-LO, as shown

in the figure below.

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Front Panel Operation

Figure 5.10 AC Current Measurement Connection Diagram

3. Click or tap to set the measurement parameters of AC current: Range and

Rate

Table 5.5 AC Current Measurement Parameter Setting

Parameter Remarks

Range*

Auto, 100 μA, 1 mA, 10 mA, 100 mA, 1 A, 10 A(DM858)/3 A(DM858E)

Rate Fast, Medium, Slow

NOTE

20% over range on all ranges except 10 A range. The range can be set to Auto or the given

specified values.

4. Click or tap to enable or disable the relative operation function. When

enabled, the displayed reading value is the result obtained by subtracting the set relative value from the actual measurement value. For the relative value setting methods, refer to descriptions in "

Math Operation

5. Read the measured value

When reading the measurement results, you can use the arrow keys to switch the reading rate.

6. Hold the reading data

Press

DM858 Series User Guide

to run and hold the reading data displayed on the screen.

Page 55

5.3.5 To Measure Resistance

The instrument provides 2-wire (2WR) and 4-wire (4WR) resistance measurements. The following section introduces the connection methods and measurement methods of 2WR and 4WR resistance measurements.

5.3.5.1 2WR Measurement

Operation Procedures:

1. To enter the 2WR measurement interface, perform either one of the following two

operations.

- Press on the front panel;

- Click or tap the main measurement item shown at the left part of the main

Front Panel Operation

display area. The measurement items are displayed. Click or tap to select

to enter the 2WR measurement interface.

Figure 5.11 2WR Measurement Interface

2. Connect red lead to terminal Input-HI and black lead to terminal Input-LO, as

shown in the figure below.

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Front Panel Operation

Figure 5.12 2WR Measurement Connection Diagram

3. Click or tap to set the measurement range, rate, and display digit (available

when the range is set to 1 MΩ or above and when the measurement rate is Slow).

Table 5.6 2WR Measurement Parameter Setting

Parameter Description

Range* Auto, 100 Ω, 1 kΩ, 10 kΩ, 100 kΩ, 1 MΩ, 10 MΩ, and 50 MΩ

Rate Slow, Medium, Fast

1/2

Digit (available

1/2

, 5 when the range is set to 1 MΩ or above and when the measurement rate is Slow)

4. Click or tap to enable or disable the relative operation function.

When enabled, the displayed reading value is the result obtained by subtracting the set relative value from the actual measurement value. For the relative value setting methods, refer to descriptions in "

DM858 Series User Guide

NOTE

20% overrange in all ranges. You can select Auto or a specified range value.

Math Operation

Page 57

TIP

If the measured resistance is small, Relative operation is recommended to reduce the error

caused by test lead. If no oRelative operation is used, an additional error of 0.2 Ω is added.

To test the resistance above 1 MΩ, avoid external interference.

5. Read the measured value

When reading the measurement results, you can use the arrow keys to switch the reading rate.

6. Hold the reading data

Press to run and hold the reading data displayed on the screen.

5.3.5.2 4WR Measurement

Front Panel Operation

When the measured resistance is lower than 100 kΩ, the 4-wire resistance measurement is recommended to reduce the measurement error caused by test lead resistance and contact resistance between the probe and the testing point because these two resistances cannot be ignored comparing with the measured resistance.

Operation Procedures:

1. To enter the 4WR measurement interface, perform either one of the following two

operations.

- Press > to enter the 4WR measurement interface.

- Click or tap the main measurement item shown at the left part of the main

display area. The measurement items are displayed. Click or tap to select

to enter the 4WR measurement interface.

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Front Panel Operation

Figure 5.13 4WR Measurement Interface

2. Connect red leads to terminal Input-HI and HI-Sense, black leads to terminal

Input-LO and Low Sense, as shown in the figure below.

Figure 5.14 4WR Measurement Connection Diagram

3. Click or tap to set the measurement range, rate, and display digit (available

when the range is set to 1 MΩ or above).

Table 5.7 4WR Measurement Parameter

Parameter Description

Range* Auto, 100 Ω, 1 kΩ, 10 kΩ, 100 kΩ, 1 MΩ, 10 MΩ, and 50 MΩ

DM858 Series User Guide

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Front Panel Operation

Parameter Description

Rate Slow, Medium, Fast

1/2

Digit (available

1/2

, 5 when the range is set to 1 MΩ or above)

NOTE

20% overrange in all ranges. You can select Auto or a specified range value.

4. Click or tap to enable or disable the relative operation function.

Math Operation

5. Read the measured value

When reading the measurement results, you can use the arrow keys to switch the reading rate.

Hold the reading data

Press to run and hold the reading data displayed on the screen.

NOTE

Please do not put the terminals of the resistance on the conductive plane or in your hand

to avoid error. The larger the resistance, the more the impact on the measurement results.

5.3.6 To Measure Capacitance

The instrument can measure up to 1 mF/10 mF (only available for DM858) capacitance. The following section introduces the connection methods and measurement methods of capacitance.

Operation Procedures:

1. To enter the capacitance measurement interface, perform either one of the

following two operations.

- Press on the front panel;

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Front Panel Operation

- Click or tap the main measurement item shown at the left part of the main

display area. The measurement items are displayed. Click or tap to select

to enter the capacitance measurement interface.

Figure 5.15 Capacitance Measurement Setting Interface

2. Connect red lead to terminal Input-HI and anode of the capacitance. Connect the

black lead to both terminal Input-LO and cathode of the capacitance, as shown in

the figure below.

3. Click or tap to set the range of the capacitance measurement.

DM858 Series User Guide

Figure 5.16 Capacitance Measurement Connection Diagram

Page 61

Table 5.8 Capacitance Measurement Parameter Settings

Parameter Description

Front Panel Operation

Range*

Auto, 1 nF, 10 nF, 100 nF, 1 μF, 10 μF, 100 μF, 1 mF, and 10 mF (only available for DM858)

NOTE

20% overrange on all ranges.

4. Click or tap to enable or disable the relative operation function. When

enabled, the displayed reading value is the result obtained by subtracting the set relative value from the actual measurement value. For the relative value setting methods, refer to descriptions in "

Math Operation

5. Read the measured value

The capacitance measurement is measured at a fixed "slow" rate with a 3.5-digit display. Therefore, the reading rate cannot be adjusted during measurement results reading.

Hold the reading data

Press

to run and hold the reading data displayed on the screen.

TIP

Before measuring the electrolytic capacitor, you should first short-circuit the two pins of the

electrolytic capacitor to discharge it.

5.3.7 To Test Continuity

The continuity test checks that the resistance in the DUT is low enough to be considered continuous. In this case, the beeper sounds, if enabled, to inform you of the continuity situation.

Operation Procedures:

1. To enter the continuity measurement interface, perform either one of the following

two operations.

- Press on the front panel;

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Front Panel Operation

- Click or tap the main measurement item shown at the left part of the main

display area. The measurement items are displayed. Click or tap to select

to enter the continuity measurement interface.

Figure 5.17 Continuity Test Interface

2. Connect red lead to terminal Input-HI and black lead to terminal Input-LO, as

shown in the figure below.

Figure 5.18 Continuity Test Connection Diagram

3. Click or tap

resistance is 10 Ω. The value is set before leaving factory and you can directly

DM858 Series User Guide

to set the short-circuit resistance. By default, the short-circuit

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Front Panel Operation

perform the continuity test. If you do not need to modify the parameter, go to the next step.

Table 5.9 Continuity Test Parameter Settings

Parameter Description

Short Circuit Resistance 10 Ω (default); from 1 Ω to 1,000 Ω

Enables or disables the beeper. If the

Beeper

beeper is enabled, beeper sounds when the circuit is considered to be continuous.

NOTE

The short-circuit resistance value is stored in the non-volatile memory and will remain

unchanged at power-off.

4. Measurement Display Results

For the open circuit or measured value exceeds 1.2 kΩ, OPEN is displayed on the screen; When the measured value is smaller than the set short-circuit resistance, the actual resistance value is displayed on the screen. At this time, if the beeper is enabled, the beeper sounds. When the measured value is greater than the set short-circuit resistance and less than 1.2 kΩ, the beeper does not sound whether it is enabled or not, and the actual resistance value is displayed on the screen.

5.3.8 To Check Diode

Operation Procedures:

1. To enter the diode measurement interface, perform either one of the following two

operations.

- Press > on the front panel to enter the diode measurement

Interface.

- Click or tap the main measurement item shown at the left part of the main

display area. The measurement items are displayed. Click or tap to select

to enter the diode measurement interface.

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Front Panel Operation

Figure 5.19 Diode Measurement Interface

2. Connect red lead to both terminal Input-HI and anode of the Diode and black lead

to both terminal Input-LO and cathode of the Diode, as shown in the figure below.

Figure 5.20 Diode Measurement Connection Diagram

3. Press on the front panel, and the secondary display area is displayed. Click

or tap the ON/OFF tab for Beeper to enable or disable the beeper. When the diode

is properly connected, the instrument beeps for one time (If beeper is enabled).

4. Different conditions for Measurement Result:

DM858 Series User Guide

Page 65

- OPEN: when OPEN is displayed on the screen, it indicates that the diode is

open-circuit or the measured forward voltage drop is less than 0.1 V or greater

than 2.1 V.

- Measured Value: when the measured forward voltage drop is within the range

of 0.1 V and 2.1 V.

- Measured Value and with Beeper On: when the measured values are displayed

on the screen, with beeper on, the measured forward voltage drop is within the

range of 0.1 V and 2.1 V.

5.3.9 To Measure Frequency/Period

Front Panel Operation

The frequency/period of a signal could be measured with the frequency/period measurement function. The following section introduces how to perform Frequency and Period measurement with the instrument.

5.3.9.1 Measure Frequency

Operation Procedures:

1. To enter the frequency measurement interface, perform either one of the

following two operations.

- Press on the front panel;

- Click or tap the main measurement item shown at the left part of the main

display area. The measurement items are displayed. Click or tap to select

to enter the frequency measurement interface.

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Front Panel Operation

Figure 5.21 Frequency Measurement Interface

2. Connect red lead to terminal Input-HI and black lead to terminal Input-LO, as

shown in the figure below.

Figure 5.22 Frequency Measurement Connection Diagram

3. Click or tap to set the range of the frequency measurement.

Table 5.10 Frequency Measurement Settings

Parameter Description

Range Auto, 100 mV, 1 V, 10V, 100 V, 750 V

DM858 Series User Guide

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Front Panel Operation

4. Click or tap to enable or disable the relative operation function.

Math Operation

5. Read the measured value

The frequency measurement is measured at a fixed "slow" rate with a 5.5-digit display. Therefore, the reading rate cannot be adjusted during measurement results reading.

6. Hold the reading data

Press

5.3.9.2 Measure Period

Operation Procedures:

1. To enter the period measurement interface, perform either one of the following

two operations.

- Press > on the front panel;

- Click or tap the main measurement item shown at the left part of the main

display area. The measurement items are displayed. Click or tap to select

to run and hold the reading data displayed on the screen.

to enter the period measurement interface.

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Front Panel Operation

Figure 5.23 Period Measurement Interface

2. Connect red lead to terminal Input HI and black lead to terminal Input LO, as

shown in the figure below.

Figure 5.24 Period Measurement Connection Diagram

3. Click or tap to set the range of the period measurement.

Table 5.11 Period Measurement Parameter Setting

Parameter Description

Range Auto, 100 mV, 1 V, 10V, 100 V, 750V

DM858 Series User Guide

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Front Panel Operation

4. Click or tap to enable or disable the relative operation function.

5. Read the measured value

The period measurement is measured at a fixed "slow" rate with a 5.5-digit display. Therefore, the reading rate cannot be adjusted during measurement results reading.

6. Hold the reading data

Math Operation

Press

to run and hold the reading data displayed on the screen.

5.3.10 Any Sensor Measurement

By using any sensor measurement, you can connect Pressure Sensor, Flux Sensor or Temperature Sensor easily. This function enables you to easily convert a measured physical quantity (such as pressure, flow rate and temperature) into a quantity that can be easily measured (such as voltage, current or resistance). By pre-inputting a response curve, the multimeter converts and amends the data according to the internal arithmetic and displays the physical quantity measured on the screen. Users can edit and modify the display unit of the measured physical quantity at will.

The multimeter supports DCV, DCI, Freq, 2WR, 4WR, and temperature sensor measurement (TC, RTD, Therm). Meanwhile, there are 10 groups of basic Sensor preset within the instrument.

Connection

Different sensors have different connection methods. For the Voltage Sensor, Resistance Sensor, Thermocouple Sensor and Frequency Sensor, please connect the red lead to terminal Input-HI and black lead to terminal Input-LO, as shown in the figure below.

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Front Panel Operation

Figure 5.25 Voltage, Resistance, TC, Frequency Sensor Connection Method

For the Current Sensor, please connect the red lead to terminal Input-HI and black lead to terminal Input-LO, as shown in the figure below.

Figure 5.26 Current Sensor Connection Method

1. To enter the sensor measurement interface, perform either one of the following

two operations.

- Press > on the front panel to enter the sensor measurement

DM858 Series User Guide

interface.

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Front Panel Operation

- Click or tap the main measurement item shown at the left part of the main

display area. The measurement items are displayed. Click or tap to select

to enter the sensor measurement interface.

Figure 5.27 Sensor Measurement Interface

5.3.10.1 To Measure the Temperature Sensor

Figure 5.27

, click or tap to enter the any sensor measurement setting

interface.

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Front Panel Operation

Figure 5.28 Temperature Sensor Setting Interface

Figure 5.28

, click or tap Temperature Sensor to enter the temperature sensor

setting interface.

Select the temperature sensor type. As shown in down list of

Measurement Type to select "TC", "RTD", or "Therm". By default, TC is

Figure 5.28

, click or tap the drop-

selected.

• TC

- The TC (thermocouple) is one of the most commonly used industrial

temperature detection device. It converts the temperature value into voltage reading, and has a very large temperature measurement range. The common thermocouples are B (Pt Rh 30- Pt Rh6), E (NI CR-WRCK), J (Fe-WRCK), K (NI CR-NiSi), N (NiCrNi-NiSi), R (Pt Rh13 -Pt), S (Pt Rh10-Pt) and T (Cu-WRCK). Among them, B, R and S are precious metal thermocouple, while E, J, K, N and T are cheap metal thermocouples. For the reference table about each thermocouple, please see the ITS-90 standards. By default, B-ITS-90 is selected.

DM858 Series User Guide

Click or tap the drop-down list of

Measurement Type to select "TC".

- User-defined Cold Junction Temperature

- Enables or disables the user-defined cold junction temperature. If the

option box before the input field of

Cold Junction Temperature is

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Front Panel Operation

not checked, the input field is grayed out and disabled. You can only

use the built-in cold junction temperature.

- If checked, click or tap the input field of Cold Junction Temperature,

then input the user-defined value with the pop-up numeric keypad.

NOTE

Theoretically, TC is measured at 0°C at the cold side. However, the instrument is

usually at room temperature during measurement rather than 0°C.

This has caused the thermopotential difference to decrease, resulting in

measurement inaccuracy or error.

Therefore, it is necessary to make the cold-junction compensation to reduce the

error.

- Temperature Unit: sets the temperature unit. The available units are ℃, ℉,

and K. By default, the unit is ℃.

- Display Meas. Value:

enables or disables the display of the measurement value on the screen.

- ON: enables the display of the measurement value on the screen.

- OFF: disables the display of the measurement value on the screen.

- Apply

Click or tap Apply to apply the current setting.

• RTD

- RTD is a temperature detector commonly used in medium-low

temperature range. It features in high measurement accuracy and stable performance.

It measures the temperature depending on the changing resistance of the measured substance with the temperature. The multimeter will display the temperature corresponding to the resistance when the resistance changes.

This kind of sensor has good linearity.

The multimeter adopts the approximate arithmetic of IEC751 standards and converts the resistance signal from the temperature sensor into the related temperature for displaying.

For the reference table about each RTD, please refer to the related standards.

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Front Panel Operation

Click or tap the drop-down list of Measurement Type to select "RTD".

Figure 5.29 RTD Temperature Sensor Setting Interface

- Connection Method: sets the connection method of the thermal

resistance. You can click or tap 2WR or 4WR to select the connection

method. By default, it is 2WR.

- R0(Ω): sets the nominal resistance at the reference temperature T0.

The settable range is from 49 Ω to 2,100 Ω. By default, it is 100 Ω.

- Temperature Unit: sets the temperature unit. The available units are

℃, ℉, and K. By default, the unit is ℃.

- Temperature Coefficient: sets the temperature coefficient used for

the RTD. Calculate it according to the formula: (R100 - R0)/R0.

Wherein, R100 indicates the resistance at temperature 100℃. The

available temperature coefficient values are 385, 389, 391, and 392. By

DM858 Series User Guide

default, it is 385.

- Display Meas. Value:

enables or disables the display of the measurement value on the screen.

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Front Panel Operation

- ON: enables the display of the measurement value on the

screen.

- OFF: disables the display of the measurement value on the

screen.

- Apply

Click or tap Apply to apply the current setting.

• Therm

- The THERM (thermistor) converts the temperature variation information

into resistance variation information. It is especially sensitive to temperature.

In this measurement, the multimeter adopts Steinhart-Hart approximate arithmetic and converts the resistance signal from the temperature sensor into the related temperature for displaying.

To use the THERM sensor, you need to set the resistance parameter of the multimeter and select the connection mode.

Click or tap the drop-down list of

Measurement Type to select "Therm".

Figure 5.30 Therm Temperature Sensor Setting Interface

- Resistance: sets the resistance at temperature 25℃. The available

choices are 2.2 kΩ, 3 kΩ, 5 kΩ, 10 kΩ, and 30 kΩ. By default, it is 2.2

kΩ.

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Front Panel Operation

- Connection Method: sets the connection method of the thermal

resistance. You can click or tap 2WR or 4WR to select the connection

method. By default, it is 2WR.

- Temperature Unit: sets the temperature unit. The available units are

℃, ℉, and K. By default, the unit is ℃.

- Display Meas. Value:

enables or disables the display of the measurement value on the screen.

- ON: enables the display of the measurement value on the

screen.

- OFF: disables the display of the measurement value on the

screen.

- Apply

Click or tap Apply to apply the current setting.

5.3.10.2 To Measure User-defined Sensor

Set the User-Defined Sensor

Figure 5.28

, click or tap Customize Sensor to enter the user-defined sensor

setting interface.

DM858 Series User Guide

Figure 5.31 User-defined Sensor Setting Interface

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Front Panel Operation

1. Name

Sets the name of the sensor. Click or tap the input field of Name to enter the name setting interface.

Figure 5.32 User-defined Sensor Name Setting

a. Input the sensor name. The length of the name shall not exceed 15 characters

and cannot be the same as the existing sensor name.

b. Click or tap OK to confirm input.

2. Sensor Type

Sets the sensor type. The available sensors are DCV, DCI, 2WR, 4WR, FREQ, and TC. By default, it is DCV.

3. Sensor Unit

Sets the sensor unit. The available units are ℃ (degree Celsius), ℉(degree Fahrenheit), K, %, °(degree), and Customize. By default, it is °. When you select "Customize", click or tap the edit field next to the Customize field, then a virtual keypad is displayed. Input the user-defined unit with the virtual keypad.

4. Display Meas. Value

Enables or disables the display of the measurement value on the screen.

- ON: enables the display of the measurement value on the screen.

- OFF: disables the display of the measurement value on the screen.

Reference Value

Sets the reference value. Click or tap

to enter the reference value setting

interface.

Click or tap to delete the specified line of the reference values.

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Front Panel Operation

Figure 5.33 Reference Value Setting Table

NOTE

Algorithm: The reference value calculation supports interpolation and fitting algorithms.

The interpolation algorithm applies to the sensor that has a strong linear relationship, and

the number of data groups to be calculated shall not be less than two. The fitting

algorithm applies to the sensor that has no distinctive linear relationship, and the number

of data groups to be calculated shall not be less than 5 groups of measured values and

displayed values.

Segment: sets the segment status of the data group. You can enable or disable the

segment display. By default, segment is enabled for the first group of reference value and

cannot be disabled. If you add another group of reference value, you can select whether to

enable or disable the segment. Only when you enabled the segment, can you set the

algorithm method for the current data group.

- Meas. Value: indicates the actually measured value. Its range is determined by

the sensor type. For details, refer to the following table.

Table 5.12 Meas. Value Setting Range

Sensor Type Setting Range

DCV -1000 V to +1000 V

DCI -10 A to +10 A (DM858)

2WR 0 Ω to +50 MΩ

4WR 0 Ω to +50 MΩ

Freq 20 Hz to 100 kHz

DM858 Series User Guide

-3 A to +3 A (DM858E)

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Front Panel Operation

- Displayed Value: indicates the displayed value of the sensor. The settable

range is from -999999 to +999999.

Figure 5.34 Reference Value Setting

After setting the measured value and displayed value, click or tap OK to confirm the reference value setting, as shown in the figure below.

6. Apply the setting

Click or tap Apply to apply the current setting.

7. Sensor management

Click or tap Sensor Manager to enter the user-defined sensor setting interface. The instrument supports at most 10 user-defined sensors. Each time only one sensor can be selected.

- Save the Sensor

Click or tap

Save to save the selected sensor. After being saved, "saved" in

bracket is added following the saved sensor name.

Figure 5.35 Customize the Sensor

- Apply the Sensor

1. Click or tap Apply to apply the user-defined sensor setting.

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Front Panel Operation

2. This operation is only available for the saved user-defined sensor.

- Delete the Sensor

1. Click or tap Delete to delete the user-defined sensor.

2. Then a dialog box is displayed, prompting you to confirm whether to delete

the selected sensor. Click OK to confirm deleting the selected sensor; click

Cancel to cancel the deletion operation. The deletion operation is only

available for the saved user-defined sensor.

5.4 2ND Measurement

Click or tap the function navigation icon at the lower-left corner of the screen, and then select 2ND to enter the secondary measurement setting menu.

Figure 5.36 2ND Measurement Setting Interface

Table 5.13 2ND Measurement Parameter Setting

Parameter Description

Switch

Measurement Types Selects the type of 2ND measurement.

DM858 Series User Guide

Enables or disables the 2ND measurement function.

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Front Panel Operation

When you enable the 2ND measurement, press , the results of the 2ND measurement is displayed in the secondary display area of the screen, as shown in the following figure.

Figure 5.37 Main and Secondary Display Areas

As shown in the figure above, the section where the measured item and values are displayed in yellow is considered as the main display area, and the section below the main display area is considered as the secondary display area.

Click or tap measurement item and the secondary measurement item. For details, refer to

Interface Overview

in the secondary display area to switch the position of the basic

User

The basic measurement types displayed in the main display area are all supported by the 2ND measurement. In some specific conditions, some of the basic measurement types are disabled for 2ND measurement. For details, see the table below.

Table 5.14 Basic Measurement Types and 2ND Measurement Types

Basic Measurement Function

DCV DCI ACV ACI FREQ PERIOD 2WR 4WR Cap

2ND

Meas.

DCV

Avail able

Types

DCI

Avail able

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Front Panel Operation

Basic Measurement Function

DCV DCI ACV ACI FREQ PERIOD 2WR 4WR Cap

ACV

ACI

FREQ

PERIOD

2WR

4WR

Cap

Avail able

Availa ble

Available

Availa ble

Avail able

Remarks:

1. If the measurement type for the basic measurement and 2ND measurement is the

same:

- The measurement data are updated synchronously in both the main display

area and the secondary display area.

- If the math operations are adopted for the basic measurement types, then the

operation results are displayed in the main display area and the measurement values before the operation are displayed in the secondary display area. For details, refer to

User Interface Overview

2. If the measurement type for the basic measurement and 2ND measurement is

different:

- The two types of measurements are carried out alternatively. The measurement

data in the main display area and the secondary display area are updated respectively.

- If math operations such as Stat, Limit, dBm, and dB are adopted and Relative

operation is disabled for the basic measurement types, then the measurement values for the main measurement types are displayed in the main display area and the measurement values for the secondary measurement types are displayed in the secondary display area.

DM858 Series User Guide

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Front Panel Operation

- If the math operations such as Stat, Limit, dBm, and dB are adopted and

Relative operation is enabled for the basic measurement types, then the Relative operation results are displayed in the main display area and the measurement values for the secondary measurement types are displayed in the secondary display area.

3. When the basic measurement type is Sensor, after setting the sensor parameters,

the operation results (Relative Value) of the sensor is displayed in the main display

area, and the current measurement value is displayed in the secondary display

area. For details, refer to

4. When the basic measurement type is ACV and the secondary measurement type is

FREQ/PERIOD; or when the basic measurement type is FREQ/PERIOD and the

secondary measurement type is ACV, the measurement values are mainly displayed

for the basic measurement types.

5. By default, the secondary measurement types adopts Auto range. If the main and

secondary measurement types are the same, then the secondary measurement

type use the same range as the basic meaurement type.

6. The measurement data of the secondary measurement types do not support

Holding operation.

5.5 Preset Mode

To Measure User-defined Sensor

The instrument provides the preset setting. Preset mode applies to production lines to avoid misoperations.

Press > to enter the preset interface.

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Front Panel Operation

The preset mode allows you to preset 10 user-defined settings.

Figure 5.38 Preset Interface

Preset Settings

If User1 is defined to preset DCV measurement configurations and User2 is defined to preset ACV measurement configurations:

After configuring the DCV measurement parameters, click or tap User1 > Save, "saved" in brackets is added following User1, which indicates that the DCV configurations are saved as User1(saved) preset file. At this time,

Apply and Delete

menu are added to the interface. To load the DCV configurations that you set, click or

Apply to load the DCV measurement configurations. Click or tap Delete to delete

tap the user-defined DCV presetting.

After configuring the ACV measurement parameters, click or tap

User2 > Save,

"saved" in brackets is added following User2, which indicates that the ACV configurations are saved as User2(saved) preset file.

At this time, configurations that you set, click or tap

Apply and Delete menu are added to the interface. To load the ACV

Apply to load the ACV measurement

configurations. Click or tap Delete to delete the user-defined ACV presetting.

DM858 Series User Guide

Figure 5.39 Preset Setting Interface

Page 85

5.6 Math Operation

The multimeter provides five math functions: Statistics (Max, Min, Avg, standard deviation, and count), Limit, dBm, dB, and Relative operation. You can select different math functions for different measurement items.

The math operations are applicable to the voltage, current, resistance, capacitance, frequency/period, and sensor measurements. However, dB and dBm operations are only applicable to the voltage measurement.

NOTE

The math operation is diabled when the range is AUTO.

Press or click/tap on the screen, then the math operation interface is displayed, as shown in

Figure 5.40

Front Panel Operation

Figure 5.40 Math Operation Setting

Table 5.15 Description of Math Operations

Parameter Remarks

Makes statistics of the current measurement, including maximum

Statistics

value, minimum value, average value, standard deviation, and count (current count of the samples).

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Front Panel Operation

Parameter Remarks

Limit

dBm

Sets the upper and lower limits and makes limit operation to identify those signals that are beyond the limits by sounding an alarm. It is applicable to DCV, ACV, DCI, ACI, Resistance, Frequency, Capacitance, and temperature measurements.

The dBm function is logarithmic, comparing power delivered to a reference resistance,

relative to 1 milliwatt:

Relative Enables or disables the Relative operation.

5.6.1 Statistics

The Statistics operation calculates the min. value, max. value, average value, standard deviation, and reading count during the measurement.

The multimeter can perform Statistics operation on the following measurement items: DCV, ACV, DCI, ACI, Resistance, Frequency, Period, Capacitance, and any sensors.

Press enter the math operation interface. Then, select Stat from the drop-down list of Operation Type.

Each dB measurement is the difference between the input signal and a stored reference value, with both values converted to dBm.

to enter the math operation interface. You can also click or tap to

DM858 Series User Guide

Figure 5.41 Statistic Parameter Setting

Page 87

Table 5.16 Statistic Parameter Setting

Parameter Remarks

Front Panel Operation

Switch

Enables or disables the Statistical operation.

Operation Type Selects Stat.

The operation results are displayed in the secondary display area, as shown in the following figure.

Figure 5.42 Statistics Operation Result

• Max: indicates the max. reading.

• Min: indicates the min. reading.

• Avg: indicates the average value of the reading.

• Std: indicates the standard deviation of the reading.

• Count: indicates the reading count.

NOTE

• When statistics operation is selected, the multimeter takes the first reading as the

• The max. value, min. value, average value, and sample count are all stored in the volatile

5.6.2 Limit

The limit operation allows you to set the specified upper limit and lower limit. Once the signal beyond the set limits appears, the beeper sounds. The multimeter can perform limit operation on the following measurement items: DCV, ACV, DCI, ACI, Resistance, Frequency, Period, Capacitance, and temperature sensor.

Press to enter the math operation interface. You can also click or tap to enter the math operation interface. Then, select Limit from the drop-down list of Operation Type.

maximum (or minimum) for displaying. The reading shown on the screen is always the

maximum (or minimum) within the current readings when measuring multiple

consecutive readings.

memory. They will be cleared at power-off.

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Front Panel Operation

Figure 5.43 Limit Parameter Setting

Table 5.17 Limit Parameter Setting

Parameter Remarks

Switch Enables or disables the Limit operation.

Operation Type Selects Limit operation.

Upper Limit Indicates the specified upper limit.

Lower Limit Indicates the specified lower limit.

Enables or disables the beeper. When

Beeper

enabled, the beeper sounds once the reading exceeds the set limits.

Clear

Relative Switch

Clears the current status and starts to make statistics again.

Enables or disables the Relative operation.

Relative Input the Relative value.

NOTE

• The ranges of the upper and lower limits shall be within -120%-120% of the current

measurement range.

• The specified upper limit shall be greater than the lower limit.

• The upper and lower limits are stored in the volatile memory. They will be reset to the

default values at power-on.

1. Set the limits

Click/tap the input field of Upper Limit or Lower Limit to input the desired value with the pop-up numeric keypad.

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When inputting a positive or negative value, click or tap the "±" sign to switch between the positive and negative value sign.

The limit value unit is determined by the currently selected measurement item.

When the limit value you set exceeds the specified one, the beeper sounds (if enabled), and an error message "-222 Data out of range" is displayed.

2. Math operation result display

When you perform the math operation, the math operation results are displayed in the secondary display area, as shown in the figure below.

Figure 5.44 Limit Operation

Lower Failures: indicates the counts of below the defined lower limit.

Upper Failures: indicates the counts of above the defined upper limit.

Status: indicates the status of the limit operation.

Pass count: indicates the counts of values that are within the defined upper limit and lower limit.

When the count exceeds the upper limit, the secondary display area displays "high fail"; when the count exceeds the lower limit, the secondary display area displays "low fail"; when the count does not exceed the upper limit or lower limit, it shows "pass". If the beeper is enabled, when the count exceeds the upper limit or is below the lower limit, the beeper sounds an alarm.

5.6.3 dBm

dBm represents the absolute value of the power. The dBm operation calculates the power of the reference resistance according to the measured voltage. The dBm function applies to AC voltage and DC voltage measurements only.

Press to enter the math operation interface. You can also click or tap to enter the math operation interface. Then, select dBm from the drop-down list of Operation Type.

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Front Panel Operation

Figure 5.45 dBm Parameter Setting Interface

Table 5.18 dBm Parameter Setting

Parameter Description

Switch Enables or disables dBm operation.

Operation Type Selects dBm.

Relative Resistance

The settable range is from 50 Ω to 8000 Ω.

dBm Operation Method

The dBm operation calculates the power of the reference resistance according to the measured voltage. The formula is as follows:

dBm = 10 x Log10 [(Reading2 /R

Wherein, Reading denotes the measured voltage and R

)/0.001W]

REF

denotes the reference

REF

resistance.

Take DCV measurement as an example, the calculation results are displayed in the secondary display area, as shown in the following figure.

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Front Panel Operation

5.6.4 dB

dB represents the relative value which is used in the Relative operation of dBm value. The dB function applies to AC voltage and DC voltage measurements only.

Press to enter the math operation interface. You can also click or tap to enter the math operation interface. Then, select dB from the drop-down list of Operation Type.

Figure 5.46 dBm Operation Results

Figure 5.47 dB Operation Parameter Setting

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Front Panel Operation

Table 5.19 dB Parameter Setting

Parameter Description

Switch Enables or disables dB operation.

Operation Type Selects dB.

Relative dB Value

dB Operation Method

When enabled, the multimeter calculates the dBm value of the next reading and subtracts the relative dB value from this value and then displays the result.

= 10 x Log10 [(Reading2 /R

The range of the relative dB value is from

-120.00 dBm to 120.00 dBm. By default, it is 0 dBm.

)/0.001W] - dB relative value

REF

Wherein, Reading denotes the measured voltage and R

denotes the reference

REF

resistance.

Take DCV measurement as an example, the calculation results are displayed in the secondary display area, as shown in the following figure.

NOTE

Relative dB Value

• Input a relative dB value with a pop-up numeric keypad, and save it as a relative dB value.

• The relative dB value is stored in the volatile memory and will be cleared at power-off.

DM858 Series User Guide

Figure 5.48 dB Operation Results

The range of the relative dB value is from -120 dBm to 120 dBm. By default, it is 0 dB.

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5.6.5 Relative

The reading displayed on the screen in Relative operation is the difference between measured and relative values.

Enable the relative operationTo enable the relative operation, perform the following operations:

Front Panel Operation

• Click or tap

is highlighted in yellow box.

• In the math operation menu, click or tap ON for the Relative Switch menu.

Displayed Value = Measured Value - Relative Value

to enable the relative operation. The Relative menu label

Figure 5.49 Relative operation

The multimeter can perform relative operation on the following measurement items: DCV, ACV, DCI, ACI, Resistance, Frequency, Period, Capacitance, and temperature sensor.

The ranges of the relative values in Relative operation are shown in the table below:

Table 5.20 Relative Value Setting Range

Measurement Item Setting Range

DCV

ACV

DCI/ACI

2WR/4WR

(-120% of the current range) to (120% of the current range)

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Front Panel Operation

Measurement Item Setting Range

Capacitance

Frequency -120 kHz to 120 kHz

Period -60 ms to 60 ms

5.7 Graph Display

The measurement results can be displayed in Trend, Histogram, and Bar Chart.

NOTE

The graph display is disabled in Continuity and Diode tests.

5.7.1 Trend Graph

(-120% of the current range) to (120% of the current range)

Click or tap to enter the graph display interface.

1. Enable the graph

Click or tap the ON/OFF tab for the Switch menu to enable or disable the graph display.

DM858 Series User Guide

Figure 5.50 Graph Display

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Front Panel Operation

2. Select the graph type

Click or tap the drop-down list of Chart Type to select "Trend". Then the following interface is displayed.

3. Set the vertical scale

Vertical Scale: sets the vertical scale of the trend graph. It supports Auto and Manual setting modes.

- Manual: You can set the vertical scale manually with two modes: Start-End and

Center-Span.

Figure 5.51 Manual Setting Menu

- Start: sets the start value of the horizontal scale.

- End: sets the end value of the vertical scale.

- Center: sets the middle value of the vertical scale.

- Range: sets the span of the vertical scale.

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Front Panel Operation

- Auto: takes the current measurement range as the span of the vertical scale and

adjusts the span of the vertical scale automatically based on the range of the

measured data.

4. Auto Once

Click or tap Auto Once, the instrument auto adjusts the span of the vertical scale based on the range of the measured data.

5. Clear

Click or tap Clear to clear the existing reading memory and the data in the trend graph, and start to acquire new readings to make a new trend.

The following figure shows the trend display for the DCV measurement.

The measurement rate for Capacitance, Period, and Frequecny is fixed to be Slow.

In Slow and Medium speed, the Trend graph only displays the samples within 60 s; in Fast speed, the Trend graph only displays samples within 10 s.

5.7.2 Histogram

Click or tap to enter the display interface.

DM858 Series User Guide

Figure 5.52 Trend Graph of DCV Measurement

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Front Panel Operation

Figure 5.53 Graph Display Interface

1. Click or tap the ON/OFF tab for the Switch menu to enable or disable the graph

display.

2. Click or tap the drop-down list of Chart Type to select "Histogram". Then the

following interface is displayed.

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Front Panel Operation

Figure 5.54 Histogram Setting Interface

3. The X-axis setting of the histogram supports Auto and Manual.

- Auto: the number of bins is a fixed number 10. The outer bin is disabled. The

readouts outside of the upper and lower limits will not be displayed on the

histogram. Its upper and lower limits are automatically set based on the current

range.

- Manual: sets the parameters of the histogram display manually, including the

range type (start-end/center-range) displayed in the horizontal scale of the

histogram, the number of bins, whether enabling or disabling the outer bin.

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Figure 5.55 Histogram Manual Setting

- Outer Bin: sets to enable or disable the display of the additional bins at both

left and right ends of the horizontal scale of the histogram, which can make

statistics on the data that are above or below the horizontal scale range.

- Number of Bins: sets the number of bins. The available settings are 10, 20,

40, 100, 200, and 400.

- End: sets the end value of the horizontal scale.

- Start: sets the start value of the horizontal scale.

- Center: sets the middle value of the horizontal scale.

- Range: sets the range value of the horizontal scale.

4. Click or tap Clear to clear the existing reading memory and the data in the trend

graph, and start to acquire new readings to make a new trend.

5. The following figure shows the histogram display for the DCV measurement.

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Front Panel Operation

Figure 5.56 Histogram of DCV Measurement

As shown in the figure above, data are grouped in bins represented by vertical bars in the histogram display. The data are displayed on the left side of the histogram. Read the data from left downward.

- 82.6%: indicates the percentage of samples in the largest bin.

- 419: indicates the number of samples in the largest bin.

- Total 507: indicates the total number of samples.

- #bin 10: indicates the total number of bins.

For different measurement modes, the max. number of samples supported by the histogram is different. See the following table for details.

Table 5.21 Max. Number of Samples Displayed in the Histogram

Measurement Rate Max. Number of Samples

Capacitance Measurement

Frequency/Period Measurement

Other Measurements

Slow 61 45 150

Medium N/A N/A 1050

Fast N/A N/A

The measurement rate for Capacitance, Period, and Frequency measurements is Slow.

DM858 Series User Guide

DM858: 1000

DM858E: 700