Rigol DM3068 User Manual
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Rigol DM3068 User Manual

Digital multimeter
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RIGOL
User's Guide
DM3068 Digital Multimeter
Feb. 2014
RIGOL Technologies, Inc.

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Summary of Contents for Rigol DM3068

  • Page 1 RIGOL User’s Guide DM3068 Digital Multimeter Feb. 2014 RIGOL Technologies, Inc.

  • Page 3: Guaranty And Declaration

    Notices RIGOL products are protected by patent law in and outside of P.R.C.  RIGOL reserves the right to modify or change parts of or all the  specifications and pricing policies at company’s sole decision. Information in this publication replaces all previously corresponding material.

  • Page 4: Safety Requirement

    Do Not Operate Without Covers. Do not operate the instrument with covers or panels removed. Use Proper Fuse. Please use the specified fuses. Avoid Circuit or Wire Exposure. Do not touch exposed junctions and components when the unit is powered. User’s Guide for DM3068...
  • Page 5 Do Not Operate With Suspected Failures. If you suspect damage occurs to the instrument, have it inspected by qualified service personnel before further operations. Any maintenance, adjustment or replacement especially to circuits or accessories must be performed by RIGOL authorized personnel. Keep Well Ventilation.
  • Page 6 In order to prevent the fuse from blowing out and protect the multimeter, please use the current input terminals according to the following requirements: 1) Do not connect the 10 A and LO Sense/200 mA input terminals into the current measuring circuit at the same time. User’s Guide for DM3068...
  • Page 7 (up to 300 VAC), or to the branch socket itself. However, DM3068 may be used with its HI and LO inputs connected to mains from neither permanently installed electrical device such as a main circuit-breaker panel, sub-panel disconnected box nor wired motors.

  • Page 8: Safety Terms And Symbols

    CAUTION indicates a potential damage to the instrument or other property might occur. Symbols on the Product. These symbols may appear on the product: Hazardous Safety Protective Chassis Test Warning Earth Ground Ground Voltage Terminal User’s Guide for DM3068...

  • Page 9: General Care And Cleaning

    To avoid damages to the instrument, do not expose them to liquids which are corrosive. WARNING To avoid injury resulting from short circuit, make sure the instrument is completely dry before reconnecting into a power source. User’s Guide for DM3068...

  • Page 10: Environmental Considerations

    Please contact your local authorities for disposal or recycling information. VIII User’s Guide for DM3068...

  • Page 11: Dm3068 Overview

    RIGOL DM3068 Overview DM3068 is a 6½ digits, dual display digital multimeter. It is a perfect combination of basic measurement functions, various math operations as well as any sensor measurement and can fulfill users’ requirements for high precision, various functions and auto measurement.
  • Page 12 Configuration clone: back up all the instrument configurations in a USB  storage device or clone the configurations to other DM3068. Provide English/Chinese menus and built-in help system.  Powerful remote control and any sensor editing software.

  • Page 13: Document Overview

    For example, denotes the DC voltage measurement function key. Menu:  The operation menu at the bottom of the screen is expressed by “Menu Word+Character Shading”. For example, the menu “REL” is expressed as “REL”. User’s Guide for DM3068...
  • Page 14 RIGOL Operation step:  “” is used to indicate operation steps. For example, “  REL” means pressing and then pressing REL. User’s Guide for DM3068...

  • Page 15: Table Of Contents

    Safety Requirement ................II General Safety Summary ................II Safety Terms and Symbols ............... VI General Care and Cleaning ..............VII Environmental Considerations ..............VIII DM3068 Overview .................. IX Document Overview ................XI Chapter 1 Quick Start ................. 1-1 General Inspection ................1-2 Handle Adjustment ................
  • Page 16 Save and Recall ................... 2-65 Storage Type ................. 2-66 Internal Storage ................2-67 External Storage ................2-67 To Save a File ................2-68 Utility ....................2-69 Command Set ................2-69 Interface Configurations ..............2-70 System Configuration ..............2-77 User’s Guide for DM3068...
  • Page 17 Temperature Characteristics ..............6-14 Measurement Rate ................6-16 Other Measuring Characteristics ............. 6-18 General Specifications ................6-20 Chapter 7 Appendix ................7-1 Appendix A: DM3068 Accessories ............7-1 Appendix B: Warranty ................7-2 Index ....................... 1 User’s Guide for DM3068...

  • Page 19: Chapter 1 Quick Start

     Appearance and Dimensions  Front Panel  Rear Panel  User Interface  First-use of the Multimeter  Measurement Connections  To Use the Built-in Help System  To Use the Rack Mount Kit  User’s Guide for DM3068...

  • Page 20: General Inspection

    RIGOL would not be responsible for free maintenance/rework or replacement of the unit. 2． Inspect the instrument In case of any damage, or defect, or failure, notify your RIGOL sales representative. 3． Check the accessories Please check the accessories according to the packing lists. If the accessories are incomplete or damaged, please contact your RIGOL sales representative.

  • Page 21: Handle Adjustment

    To adjust the handle position of the multimeter, grip the handle by both sides and pull outward, then rotate the handle to a desired position, see figure below. Figure 1-1 Handle Adjustment Viewing Position Carrying Position Figure 1-2 Place the Multimeter User’s Guide for DM3068...

  • Page 22: Appearance And Dimensions

    RIGOL Chapter 1 Quick Start Appearance and Dimensions 231.6 107.0 Figure 1-3 Front View Unit: mm 290.5 Figure 1-4 Side view Unit: mm User’s Guide for DM3068...

  • Page 23: Front Panel

    3. Auto Trigger/Reading Hold Continuously pressing this key can switch between auto trigger and reading hold functions. Auto Trigger: the backlight is always on; the multimeter continuously  takes readings at the fastest rate possible for the present configuration. User’s Guide for DM3068...

  • Page 24: Power Button

    Quickly save or recall 10 groups of instrument settings. Secondary Function key Enable the dual display function.  Quickly save the current instrument configuration when used in  conjunction with Quickly enter the setting interface of relative measurement (REL).  User’s Guide for DM3068...
  • Page 25 Enable auto range. Configure the measurement parameters.  Select the cursor position while entering a parameter.  Increase or decrease the measurement range.  Enter desired numeric value while setting a parameter.  Page up or down.  User’s Guide for DM3068...
  • Page 26 RIGOL Chapter 1 Quick Start 10. Signal Input Terminals The measured signal (device) will be connected into the multimeter through these terminals. Different measurement objects have different connection methods. For details, please refer to “Measurement Connections”. User’s Guide for DM3068...

  • Page 27: Rear Panel

    1) Turn off the multimeter and remove the power cord. 2) Turn the fuse seat counterclockwise as shown in the figure using a straight screw driver and then pull out the fuse seat. User’s Guide for DM3068...
  • Page 28 Selector) before power connection. Figure 1-7 Connect the Power Cord 5. VMC The mutlimeter outputs a low-true pulse from the [VM Comp] connector after every measurement when VM output is enabled (  VMC  ON). 1-10 User’s Guide for DM3068...
  • Page 29 DM3068 remotely. 8. RS232 Connect the PC through this interface. You can use SCPI commands or PC software to control DM3068 remotely. You can also use this interface to output the P/F test result. 9. Power Fuse The multimeter is already installed with a power fuse before leaving factory.

  • Page 30: Power Switch

    Connect or disconnect the AC supply. If the power button at the front panel is disabled (  System  Cfg  Switch  OFF), turning on this switch will directly start up the multimeter. 1-12 User’s Guide for DM3068...

  • Page 31: User Interface

    Mode Range REL on Rmt: Remote Control Main Display Local: Local Control : USB Storage Function Vice Display Reading Vice Display Function Indication Main Display Operation Menus Reading Figure 1-10 User Interface (Dual Display) User’s Guide for DM3068 1-13...

  • Page 32: To Use The Multimeter For The First Time

    2) Make sure the rear power switch is turned on. 3) Try to restart the multimeter, if it fails, check the power fuse and replace a new one when necessary. 4) If the problem still remains, please contact RIGOL. 1-14 User’s Guide for DM3068...

  • Page 33: Measurement Connections

    Chapter 1 Quick Start RIGOL Measurement Connections DM3068 is designed with many measurement functions. After selecting the desired measurement function, please connect the signal (device) under test to the multimeter according to the method below. Do not discretionarily switch the measurement function when measuring as it may cause damage to the multimeter.
  • Page 34 Only use 10 A and LO terminals for measurements when the AC+DC RMS value of the current under measurement goes within 200 mA and 10 A. Resistance Measurement (2-wire) Resistance Measurement (4-wire) Capacitance Measurement Capacitance Continuity Measurement Diode Measurement Open or Diode Closed Circuit 1-16 User’s Guide for DM3068...
  • Page 35 (For 4WR, 4W-RTD and 4W-THERM (For DCI sensor*) sensors) Sensor + Sensor - Note*: before setting the parameters for DCI sensor when using it, please connect it according to the figure above and press  mA. User’s Guide for DM3068 1-17...

  • Page 36: To Use The Built-In Help System

    Chapter 1 Quick Start To Use the Built-in Help System The built-in help system of DM3068 provides using help for all the front panel keys and menu softkeys as well as the using method of the built-in help. Press enter the following interface.

  • Page 37: To Use The Rack Mount Kit

    Chapter 1 Quick Start RIGOL To Use the Rack Mount Kit DM3068 can be mounted into a standard 19-inch rack cabinet. Before the installation, please remove the package and cushioning material of the multimeter. Kit Parts List Table 1-2 Kit Parts List...

  • Page 38: Installation Tool

    The machine cabinet should be a standard 19-inch one.  At least a 3U space (133.5 mm) should be provided by the machine cabinet.  The depth inside the machine cabinet should not be less than 400 mm.  1-20 User’s Guide for DM3068...
  • Page 39 Chapter 1 Quick Start RIGOL Dimensions of the mounted instrument: User’s Guide for DM3068 1-21...

  • Page 40: Installation Procedures

    Remove the handle: grip the handle by both sides and pull outward; then, pull upward. Install left and right plates: aim the detents of right and left plates at the openings on support board and insert respectively, then fix them using eight M4 screws. 1-22 User’s Guide for DM3068...
  • Page 41 Place the instrument: aim the parallels at the corresponding openings and then put the multimeter onto the support board. Fix the instrument: fasten or fit the instrument tightly into the support board using two fixed fingers in connection with four M4 screws. User’s Guide for DM3068 1-23...
  • Page 42 19-inch machine cabinet using four M6 screws and four M6 square nuts, respectively. Post-installation note: the rack holds a height of 3U. Holes pointed out by the arrows are the installation holes and should be aligned with when installing. 1-24 User’s Guide for DM3068...

  • Page 43: Chapter 2 Front Panel Operations

    To Set the Range  To Set the Resolution  Basic Measurement Functions  Any Sensor Measurement  Preset Mode  Secondary Function Key  Measurement Configuration  Math Operations  Trigger  Save and Recall  Utility  User’s Guide for DM3068...

  • Page 44: To Set The Range

    Chapter 2 Front Panel Operations To Set the Range DM3068 provides auto and manual range selecting modes. In auto mode, the multimeter selects a proper range automatically according to the input signal; in manual mode, you can use the front panel key or menu key to set the range. The auto mode can bring a lot of convenience for users while the manual mode provides higher reading precision.

  • Page 45: To Set The Resolution

    Chapter 2 Front Panel Operations To Set the Resolution DM3068 holds reading resolutions of 3½, 4½, 5½ and 6½ digits. It automatically selects a reading resolution according to the current measurement settings. The greater the resolution is, the higher the measurement accuracy will be; the lower the resolution is, the faster the measurement will be.
  • Page 46 5. The instrument always displays three digits after the decimal point in SENSOR measurement. 6. The instrument always displays one digit after the decimal point in CONT measurement. 7. The resolution is 5½ in DIODE measurement. User’s Guide for DM3068...

  • Page 47: Basic Measurement Functions

    1000 V range is selected. 4. Set the measurement parameters (Optional) The DCV measurement allows users to configure the integration time, dc impedance and auto zero. For details, please refer to “Measurement Configuration”. User’s Guide for DM3068...
  • Page 48 USB storage device. For details, please refer to the introduction in “Save and Recall”. 8. Hide the menu Press Hide to hide the operation menus for easier observation of the measurement result. Press any softkey again to display the operation menus. User’s Guide for DM3068...

  • Page 49: To Measure Ac Voltage

    The multimeter measures the input signal according to the current measurement settings and displays the value on the screen. For AC signal, you can also measure the frequency of the signal. During the ACV measurement, press and then press ; the measurement result is as User’s Guide for DM3068...
  • Page 50 USB storage device. For details, please refer to the introduction in “Save and Recall”. 8. Hide the menu Press Hide to hide the operation menus for easier observation of the measurement result. Press any softkey again to display the operation menus. User’s Guide for DM3068...

  • Page 51: To Measure Dc Current

    (10 A). 10% overrange is available on all ranges except 10 A. If the reading exceeds 10.5 A in 10 A range, “OVER LOAD” will be displayed. In order to obtain more accurate measurement results, DM3068 deals with small and large input currents separately. The multimeter will use small current measurement mode for current within 200 mA and use large current measurement mode for current that is equal to or higher than 2 A.
  • Page 52 USB storage device. For details, please refer to the introduction in “Save and Recall”. 8. Hide the menu Press Hide to hide the operation menus for easier observation of the measurement result. Press any softkey again to display the operation menus. 2-10 User’s Guide for DM3068...

  • Page 53: To Measure Ac Current

    (10 A). 10% overrange is available on all ranges except 10 A. If the reading exceeds 10.5 A in 10 A range, “OVER LOAD” will be displayed. In order to obtain more accurate measurement results, DM3068 deals with small and large input currents separately. The multimeter will use small current measurement mode for current within 200 mA and use large current measurement mode for current that is equal to or higher than 2 A.
  • Page 54 Press Save to enter the store and recall interface; at this point,  illuminated. You can save the current measurement data into internal memory or external USB storage device. For details, please refer to the introduction in “Save and Recall”. 2-12 User’s Guide for DM3068...
  • Page 55 RIGOL Chapter 2 Front Panel Operations 8. Hide the menu Press Hide to hide the operation menus for easier observation of the measurement result. Press any softkey again to display the operation menus. User’s Guide for DM3068 2-13...

  • Page 56: To Measure Resistance

    Input Protection: a 1000 V input protection is available in all ranges. 10% overrange is available on all ranges. DM3068 provides 2-wire (2WR) and 4-wire (4WR) resistance measurements. When the measured resistance is lower than 100 kΩ, the 4-wire resistance...
  • Page 57 Up to 5000 latest measured data can be viewed. Press History to enter the following interface. Press Info and use the up and down direction keys to view the  measurement item, measurement range, number of values, maximum, User’s Guide for DM3068 2-15...
  • Page 58 USB storage device. For details, please refer to the introduction in “Save and Recall”. 8. Hide the menu Press Hide to hide the operation menus for easier observation of the measurement result. Press any softkey again to display the operation menus. 2-16 User’s Guide for DM3068...

  • Page 59: To Measure Capacitance

    5. Make math operation (advanced) Users can perform math operation (STA, P/F, and REL) on each CAP measurement reading. For REL operation, the multimeter subtracts the User’s Guide for DM3068 2-17...
  • Page 60 USB storage device. For details, please refer to the introduction in “Save and Recall”. 7. Hide the menu Press Hide to hide the operation menus for easier observation of the measurement result. Press any softkey again to display the operation menus. 2-18 User’s Guide for DM3068...

  • Page 61: To Measure Continuity

    2.2 kΩ, the actual resistance value is displayed but the beeper does not sound. When the measured circuit has resistance greater than 2.2 kΩ, “OPEN” is  displayed on the screen but the beeper does not sound. User’s Guide for DM3068 2-19...
  • Page 62 RIGOL Chapter 2 Front Panel Operations 5. Hide the menu Press Hide to hide the operation menus for easier observation of the measurement result. Press any softkey again to display the operation menus. 2-20 User’s Guide for DM3068...

  • Page 63: To Measure Diode

    (the polarity of the diode might not be distinguished because the forward voltage drop might be too low). 4. Read the measurement value The multimeter screen displays the measured voltage value when the diode is connected; otherwise the screen displays “OPEN”. User’s Guide for DM3068 2-21...
  • Page 64 Press Hide to hide the operation menus for easier observation of the measurement result. Press any softkey again to display the operation menus. Remark*: this function is added since the 01.01.00.01.07.00 version but only the performance of the 1 mA current source is guaranteed. 2-22 User’s Guide for DM3068...

  • Page 65: To Measure Frequency And Period

    ) according to the measured signal and measurement requirements. 4. Set the measurement parameters (Optional) In FREQ/PERIOD measurement, you can set the gate time and filter as required. For details, please refer to “Measurement Configuration”. User’s Guide for DM3068 2-23...
  • Page 66 Press List and use the up and down direction keys or the menu softkeys  to view all the measurement results before the last update in table form. 2-24 User’s Guide for DM3068...
  • Page 67 USB storage device. For details, please refer to the introduction in “Save and Recall”. 8. Hide the menu Press Hide to hide the operation menus for easier observation of the measurement result. Press any softkey again to display the operation menus. User’s Guide for DM3068 2-25...

  • Page 68: Any Sensor Measurement

    Users can edit and modify the display unit of the measured physical quantity at will. DM3068 supports user-defined (DCV, DCI, 2WR, 4WR, FREQ) and temperature (TC, RTD, THERM) sensor measurements. Press to enter the following interface.
  • Page 69 For DCV, DCI, 2WR, 4WR or FREQ sensor, you can define a fitting curve. Since the temperature sensor (TC, RTD, THERM) converts the electrical signal (such as voltage or resistance) to temperature using the software conversion program inside the instrument, you can directly choose a desired temperature sensor. User’s Guide for DM3068 2-27...

  • Page 70: User-Defined Sensor

    Uppercase letter, lowercase letter and number can be use for defining the name. A: input uppercase letters (A-Z).  a: input lowercase letters (a-z).  1: input numbers (0-9).  2-28 User’s Guide for DM3068...
  • Page 71 Press Meas and enter the data of the physical quantity measured using the direction keys. Here, as the sensor type is 2WR, the unit is Ω. User’s Guide for DM3068 2-29...
  • Page 72 From the second group of data on, you can use the segment function to set the arithmetic for different data segment. Press SEG  ON Arith and select Line or Curve arithmetic type. 2-30 User’s Guide for DM3068...
  • Page 73 User interface. Then, press Done to enter the following interface. Press Save, the multimeter enters the store and recall interface and the  backlight of goes on. User’s Guide for DM3068 2-31...
  • Page 74 As shown in the figure below, the shown on the screen indicates that the result is unreliable. If you suspect the stored any sensor configuration files or data, press Edit to make a modification. 2-32 User’s Guide for DM3068...

  • Page 75: Temperature Sensor

    RIGOL Chapter 2 Front Panel Operations Temperature sensor DM3068 can directly measure the temperature using TC (Thermocouple), RTD (Resistance Temperature Detector) and THERM (Thermistor) sensors. For different temperature sensor, the conversion form and conversion characteristics of temperature and electrical signal are different. For different models of the same type of sensor, the characteristic parameters and temperature-electrical signal corresponding relations are different.
  • Page 76 K, N and T are cheap metal thermocouples. For the reference table about each thermocouple, please see the ITS-90 standards. The DM3068 provides two cold junction compensation modes: internal cold junction temperature & user-defined cold junction temperature. Internal cold junction temperature refers to the internal temperature of the banana jack detected by the multimeter.
  • Page 77 3. Set the Connection Type The RTD lead usually uses 2-wire or 4-wire connection. Press RTD and then press 2WR or 4WR to select the desired option; then, press to return to the upper-level menu. User’s Guide for DM3068 2-35...
  • Page 78 5K (5 kΩ), 10K (10 kΩ) and 30K (30 kΩ). 2. Set the connection type Press THERM and then press 2WR or 4WR to set the connection mode to 2-wire or 4-wire. Press to return to the upper-level menu. 2-36 User’s Guide for DM3068...

  • Page 79: Preset Mode

     Setn, the multimeter stores the current measurement  configuration into the memory unit corresponding to the key using the set name Setn. Besides, you can recall or save preset configurations using function. For details, please refer to “Save and Recall”. User’s Guide for DM3068 2-37...

  • Page 80: Secondary Function Key

    2. Quickly Store Current Settings Press  Setn, the multimeter stores the current measurement  configurations into the memory unit corresponding to the key with the name “Setn”. You can also use to perform the operation; for details, please 2-38 User’s Guide for DM3068...
  • Page 81 Chapter 2 Front Panel Operations refer to “Save and Recall”. 3. Quickly Enter REL Setting Interface In addition to button, you can press  REL in common measurement interface to directly enter the REL setting interface. User’s Guide for DM3068 2-39...

  • Page 82: Measurement Configuration

    (OC) CONT Short-circuit resistance DIODE Current Source FREQ/PREIOD Gate time, AC filter SENSOR To set the measurement parameter, select a measurement function and then press . For more details, please refer to the following content. 2-40 User’s Guide for DM3068...

  • Page 83: Integration Time

    The integration time applies to DCV, DCI, 2WR and 4WR measurements. DM3068 provides two integration time setting modes: NPLC: express the integration time by the power line cycles, the unit is PLC. ...

  • Page 84: Dc Impedance

     >10GΩ: set the input impedances in ranges of 200 mV, 2 V and 20 V to >10  GΩ, while in ranges of 200 V and 1000 V, the impedances are still 10 MΩ. 2-42 User’s Guide for DM3068...

  • Page 85: Auto Zero

    OFF: disable the auto zero function. Whatever, the multimeter automatically  takes a zero reading once the function, range or integration time is changed. The multimeter will subtract this zero reading from the following measurement value. User’s Guide for DM3068 2-43...

  • Page 86: Offset Compensation

    OFF: the multimeter does not execute offset compensation.  The offset compensation and auto zero are mutually exclusive. The used auto zero function will be disabled automatically once you turn on the offset compensation, and vice versa. 2-44 User’s Guide for DM3068...

  • Page 87: Ac Filter

    AC filter applies to ACV, ACI and FREQ/PERIOD measurements. It can optimize the low-frequency accuracy and minimize the AC settling time. DM3068 provides three types of AC filters (slow, medium and fast). The AC filter to be used is determined by the input signal frequency.

  • Page 88: Short-Circuit Resistance

    10 Ω and the setting is stored in nonvolatile memory. When continuity test is enabled, press  Conti to enter the following interface. Set a desired value using the direction keys. The range is from 1 Ω to 2000 Ω 2-46 User’s Guide for DM3068...

  • Page 89: Current Source

    1 mA, 100 μA, 10 μA, 2 μA and 200 nA and the corresponding voltage ranges are -0.2 V ~2.2 V, -0.2 V ~4.2 V, -0.2 V ~4.8 V, -0.2 V ~5.2 V and -0.2 V ~5.5 V. You can also press to select the desired current source. User’s Guide for DM3068 2-47...

  • Page 90: Gate Time

     GATE to enter the following interface. The gate time can be set to1 ms, 10 ms, 100 ms or 1 s and the default is 100 ms. You can select a desired gate time by pressing the corresponding softkey. 2-48 User’s Guide for DM3068...

  • Page 91: Math Operations

    RIGOL Chapter 2 Front Panel Operations Math Operations DM3068 provides basic math operations (STA, P/F, dBm, dB and REL) for measurement results and displays the history data through tendency graph and histogram. In DCV, ACV, DCI, ACI, 2WR, 4WR, CAP, FREQ/PERIOD or SENSOR measurement, press to enter the following interface.

  • Page 92: Math

    Press the related menu to enter the desired measurement setting interface. Note that you can only use one math operation from SAT, P/F, dBm and dB at a time, but REL can be used together with any of the four at the same time. 2-50 User’s Guide for DM3068...
  • Page 93 When All is selected, the measurement interface displays the current  measurement value as well as the maximum, minimum, average and mean square deviation of the measured readings and number of samples. User’s Guide for DM3068 2-51...
  • Page 94 The multimeter automatically exits the P/F setting interface and goes to the measurement main interface as shown in figure below. The status bar displays “P/F”.  The main display contains the current measurement reading.  The vice display displays “PASS” if the test succeeds.  2-52 User’s Guide for DM3068...
  • Page 95 FAIL” or “LO FAIL” and the beeper sounds (beeper is on:  System  Sound). WARNING The P/F signal from pins 1 and 9 of RS232 is not compatible with the handshake signal (Carrier Detect and Ring Indicator) from standard RS232. User’s Guide for DM3068 2-53...
  • Page 96 The dBm operation result is displayed at the center of the screen.  The current measurement reading and the reference resistance are displayed  at the lower left corner and lower right corner of the screen respectively. 2-54 User’s Guide for DM3068...
  • Page 97 The dB operation result is displayed at the center of the screen.  The current measurement reading and the dB preset value are displayed at  the lower left corner and lower right corner of the screen respectively. User’s Guide for DM3068 2-55...
  • Page 98 The status bar displays “REL”.  The REL operation result is displayed at the center of the screen.  Repressing REL under the main interface will close the REL operation. The  identifier “REL” disappears. 2-56 User’s Guide for DM3068...

  • Page 99: Tendency Graph

    Press any soft menu at this moment to open the operation menu as shown in figure below. Press Stop, the multimeter stops drawing and enters the following interface. Start: enable the multimeter to redraw the graph according to the current  User’s Guide for DM3068 2-57...
  • Page 100 PrtScn: save the current tendency graph under the root directory of an  external USB storage device in BMP format. Note: make sure that a USB storage device is correctly connected before using this function. Hide: hide the operation menu.  2-58 User’s Guide for DM3068...

  • Page 101: Histogram

    Press Stop, the multimeter stops updating histogram and enters the following interface. Start: enable the multimeter to redraw the histogram according to the  current measurement data. Info: provide information about the current measurement.  Hide: hide the operation menu.  User’s Guide for DM3068 2-59...

  • Page 102: Trigger

    Chapter 2 Front Panel Operations Trigger DM3068 provides four types of triggers: auto, single, external and level. It reads one or more specified number of readings (up to 50 000) each time a trigger signal is received and allows users to set the delay time between the start of trigger and reading.

  • Page 103: To Select A Trigger Source

    Pressing in remote mode will switch the multimeter into local mode. User’s Guide for DM3068 2-61...

  • Page 104: Reading Hold

    For example, if you choose 0.1%, the input signal into the multimeter is 5 V and the new reading will be displayed if three continuous readings exceed the range from 4.9975 V to 5.0025 V. 2-62 User’s Guide for DM3068...

  • Page 105: To Set The Trigger Parameters

    This menu allows you to select an edge type for the pulse from the [Ext Trig] connector at the rear panel when using external (or level) trigger. The multimeter will trigger on the specified type of edge. User’s Guide for DM3068 2-63...

  • Page 106: Trigger Output

     VMC to enter the following interface. From this interface, you can enable or disable the trigger output. When it is enabled, the multimeter outputs a negative pulse from the [VM Comp] connector after each measurement. 2-64 User’s Guide for DM3068...

  • Page 107: Save And Recall

    Save: enter the filename input interface. This menu is available only when the  current disk allows the specified type of file. Erase: clear the selected file. This menu is available only when the current disk  contains the specified type of file. User’s Guide for DM3068 2-65...

  • Page 108: Storage Type

     SensorData: save the current sensor measurement data as an “.xsda” file.  SEN_CSV: save the current sensor measurement data as a “.csv” file. You  can view the stored data using Microsoft Office Excel. 2-66 User’s Guide for DM3068...

  • Page 109: Internal Storage

    To use the external storage, insert an USB storage device into the USB Host interface at the front panel and wait until an icon appears in the status bar on the screen. USB Host MENU FUNC CAUTION Do not remove the USB storage device under “A:\” disk operations. User’s Guide for DM3068 2-67...

  • Page 110: To Save A File

    A: input uppercase letters (A-Z).  a: input lowercase letters (a-z).  1: input numbers (0-9).  Del: delete the character where the cursor locates.  Done: finish the name entry.  : return to the upper-level menu.  2-68 User’s Guide for DM3068...

  • Page 111: Utility

    Utility Set the parameters of the system-related functions. Press to enter the following interface. Cmd: select a desired command system from those supported by DM3068.  I/O: configure remote control interfaces such as LAN.  System: set the system parameters such as language.

  • Page 112: Interface Configurations

    RIGOL Chapter 2 Front Panel Operations Interface Configurations Users can control DM3068 remotely by configuring the remote interfaces (LAN, GPIB, USB (configuration-free) and RS232). Press  I/O to enter the following interface. 2-70 User’s Guide for DM3068...
  • Page 113 Press Info and use the up and down direction keys to view other information of network connection. 2. To Set IP Configuration Mode The IP address configuration mode can be set to DHCP, AutoIP or ManualIP. Different modes may have differences in parameter configuration. User’s Guide for DM3068 2-71...
  • Page 114 The format of IP address is nnn.nnn.nnn.nnn, for example 172.16.3.32. You are recommended to ask your network administrator for an available IP address. Press IPAddr and enter the desired IP address using the direction keys. Mask:  2-72 User’s Guide for DM3068...
  • Page 115 Press Apply to enable the current network parameters. 5. To Restore Factory Defaults Press Default to restore the network parameters to defaults, in which the DHCP and AutoIP are ON and the ManualIP is disabled. User’s Guide for DM3068 2-73...

  • Page 116: To Set The Gpib Address

     I/O  GPIB to enter the GPIB address configuration interface. Use the direction keys to set the GPIB address to any integer within 0 and 30. The default is 7. This setting is stored in nonvolatile memory. 2-74 User’s Guide for DM3068...
  • Page 117 *Remark: Pins 1 and 9 always outputs high level when P/F output is disabled. WARNING The P/F signal from pins 1 and 9 of RS232 is not compatible with the handshake signal (Carrier Detect and Ring Indicator) from standard RS232. User’s Guide for DM3068 2-75...
  • Page 118 DTR/DSR pins into a logic high level. 2. Print Press Print to enter the following interface, from which you can turn on or off the output of measured data from serial ports. 2-76 User’s Guide for DM3068...

  • Page 119: System Configuration

    Chapter 2 Front Panel Operations System Configuration To Select the Language DM3068 supports English/Chinese menus and built-in helps. All the messages, context helps and help topics are displayed in the language selected. Press  System  Lang to enter the following interface and choose a desired language.
  • Page 120 Set the display format of the decimal point on the screen to “ ” or “ ”. 2. Separte Set the display format of the data separator on the screen to “ ”, “None” or “Space”. For example, Decimal point: Separator: Decimal point: Separator: Space 2-78 User’s Guide for DM3068...
  • Page 121 Table 2-8 Factory defaults Parameter Factory Default Measurement Parameters *Short-circuit Resistance 10 Ω AC Filter DC Input Impedance 10 MΩ Reading Resolution 6 ½ Measurement Function User’s Guide for DM3068 2-79...

  • Page 122: Remote Interfaces

    Saved Instrument Parameters and Data No change Remote Interfaces *GPIB Address *Interface *Baud Rate 9600 *Parity Check None (8 data bit) *HS (Handshake) Remark*: Parameters marked with data * in the above table are stored in nonvolatile memory. 2-80 User’s Guide for DM3068...

  • Page 123: To Perform The Self-Test

    Done to finish the system clock setting. To Perform the Self-Test DM3068 can automatically detect the system hardware and display the results in error list. Press T/C to enter the following interface.

  • Page 125: Chapter 3 Remote Control

    Chapter 3 Remote Control This chapter introduces how to control the multimeter remotely using either virtual panel based on web page or interface commands. The chapter contains the following topics: Web Control  Command Control  User’s Guide for DM3068...

  • Page 126: Web Control

    RIGOL Chapter 3 Remote Control Web Control DM3068 confirms to LXI-C standard and can be remotely controlled via web page. Please take the following steps. 1. Set the LAN Connect the multimeter to LAN using network cable. Set and obtain the IP address by referring to “Interface Configurations”...
  • Page 127 (the default user name and password are empty). 3) Press “Web Control” to enter the instrument web page control interface. At this point, you can configure the related parameters and acquire the measurement result. User’s Guide for DM3068...
  • Page 128 6) Press “LXI” to enter the official website of the LXI association (http://www.lxistandard.org/) to view information of the standard. User’s Guide for DM3068...

  • Page 129: Command Control

    Suite from Agilent (Agilent Technologies, Inc.) to send commands to control the instrument remotely. DM3068 uses USB, LAN, RS232 or GPIB interface to communicate with PC. The next part will introduce how to control the instrument remotely using Ultra Sigma through various interfaces in details.

  • Page 130: Remote Control Via Usb

    USB cable. 2. Install the USB Driver DM3068 is a USBTMC device. After you connect the instrument to the PC and turn both on (the instrument is automatically configured to USB interface), the New Hardware Wizard is displayed on the PC. Please install the “USB Test and Measurement Device”...
  • Page 131 RIGOL 5. Communication Test Right click the source name “DM3068 (USB0::0x1AB1::0x0C94::DM3A020100823::INSTR)” and then select “SCPI Panel Control” to open the remote command control panel, from which you can send commands and read data as shown in the figure below. User’s Guide for DM3068...

  • Page 132: Remote Control Via Lan

    Select the desired resource name and click “OK” to add it as shown in the figure below. 4. View LAN Device The searched instruments are shown under the “RIGOL Online Resource” directory, as shown in the figure below. User’s Guide for DM3068...
  • Page 133 Chapter 3 Remote Control RIGOL 5. Communication Test Right click the source name “DM3068 (TCPIP::172.16.3.32::INSTR)” and then select “SCPI Panel Control” to open the remote command control panel, from which you can send commands and read data as shown in the figure below.
  • Page 134 Ultra Sigma (right-click the resource name and select LXI-Web. Various important information about the instrument (including the model number, manufacturer, serial number, description, MAC address and IP address) will be displayed on the webpage. Please refer to “Web Page Control”. 3-10 User’s Guide for DM3068...

  • Page 135: Remote Control Via Gpib

    4. View GPIB Device Click “OK” and the software return to its main interface. The searched instruments are shown under the “RIGOL Online Resource” directory, as User’s Guide for DM3068 3-11...
  • Page 136 5. Communication Test Right click the source name “DM3068 (GPIB0::25::INSTR)” and then select “SCPI Panel Control” to open the remote command control panel, from which you can send commands and read data as shown in the figure below.

  • Page 137: Remote Control Via Rs232

    (“\r\n” must be selected in End Mark), click to test the RS232 communication. When the communication succeeds, the searched devices are shown in resource list at the right side of the panel; otherwise, follow the guides to solve the problem. User’s Guide for DM3068 3-13...
  • Page 138 5. Communication Test Right click the source name “DM3068 (ASRL1::INSTR)” and then choose “SCPI Panel Control” to open the remote command control panel, from which you can send commands and read data as shown in the figure below.

  • Page 139: Chapter 4 Troubleshooting

    Chapter 4 Troubleshooting The commonly encountered failures and their solutions are listed below. When you encounter those problems, please solve them following the corresponding steps. If the problem remains still, please contact RIGOL and provide your device information ( T/C  Info).
  • Page 140 RIGOL Chapter 4 Troubleshooting the capacity of the USB storage device is no larger than 4G bytes. Restart the multimeter and insert the USB storage device. If the problem persists, please contact RIGOL. User’s Guide for DM3068...

  • Page 141: Chapter 5 Measurement Tutorial

    This chapter introduces how to eliminate the potential error during your measurement in order to obtain accurate measurement result. The chapter contains the following topics: Loading Errors (DCV)  True-RMS AC Measurements  Crest Factor Errors (non-sinusoidal inputs)  Loading Errors (ACV)  User’s Guide for DM3068...

  • Page 142: Loading Errors (Dcv)

    To reduce the effect of loading errors and noise interference, you can set the input resistance of the multimeter to “>10GΩ” for 200 mV, 2 V and 20 V ranges, and “10MΩ” for the 200 V and 1000 V ranges. User’s Guide for DM3068...

  • Page 143: True-Rms Ac Measurements

    The effective AC voltage bandwidth of DM3068 is 800 kHz and the effective AC current bandwidth is 100 kHz. The multimeter's ACV and ACI functions measure the “AC coupled” true RMS value, namely the RMS value of the AC component (the DC component is filtered out) of the input signal.
  • Page 144 DC and AC components of the signal using DCV and ACV measurements, and then calculate the AC+DC true RMS value according to the formula below. In order to obtain the best AC rejection, select 6.5 digits when measuring DC voltage. User’s Guide for DM3068...

  • Page 145: Crest Factor Errors (Non-Sinusoidal Inputs)

    In general, the greater the crest factor is, the greater the energy contained in high frequency harmonics will be. All multimeters have errors that are relevant to the crest factor. Crest factor errors of DM3068 are listed in “AC Characteristics” in chapter 6.

  • Page 146: Loading Errors (Acv)

    Chapter 5 Measurement Tutorial Loading Errors (ACV) In the AC Voltage function, the input impedance of DM3068 appears as a 1 MΩ resistance in parallel with 100 pF of capacitance. The test lead of the multimeter will also add additional capacitance and load.

  • Page 147: Chapter 6 Specifications

    0.010 + 0.001 0.0006 + 0.0001 1.000000 MΩ 2 uA 0.002 + 0.001 0.010 + 0.001 0.012 + 0.001 0.0010 + 0.0002 10.00000 MΩ 200 nA 0.015 + 0.001 0.030 + 0.001 0.040 + 0.001 0.0030 + 0.0004 User’s Guide for DM3068...
  • Page 148 20 kΩ (NPLC) 0.006 10000 10000 0.0006 0.0007 0.0015 0.0040 0.02 2500 3000 0.0004 0.0004 0.0008 0.0025 0.06 1000 0.0003 0.0003 0.0006 0.0025 0.0001 0.0002 0.0003 0.0015 0.22 0.0001 0.0002 0.0004 0.17 0.0001 0.0003 0.08 0.0002 0.035 User’s Guide for DM3068...
  • Page 149 200 mV 20 V 200 V 1000 V 200 uA 2 mA 20 mA 200 mA Typical value. -1 dBFS, 1kHz single tone. 100 us aperture time, zero trigger delay, auto zero off and 4096 samples. User’s Guide for DM3068...
  • Page 150 Externally accessible 500 mA, 250 V high speed fuse at the rear panel for 200 uA, 2 mA, 20 mA and 200 mA ranges. Internal 10 A, 250 V high speed fuse for 2 A and 10 A ranges. User’s Guide for DM3068...
  • Page 151 Reading settling times are affected by source impedance, cable dielectric characteristics and input signal changes. The default measurement delay can ensure the correctness of the first reading for most measurements. Measurement Considerations Teflon or other high-impedance, low-dielectric absorption wire insulation is recommended for these measurements. User’s Guide for DM3068...

  • Page 152: Ac Characteristics

    1.00 + 0.03 0.100 + 0.003 5 Hz-10 Hz 0.35 + 0.02 0.35 + 0.03 0.35 + 0.03 0.035 + 0.003 10 Hz-20 kHz 0.04 + 0.02 0.07 + 0.03 0.08 + 0.03 0.008 + 0.003 User’s Guide for DM3068...
  • Page 153 0.35 + 0.06 0.035 + 0.006 10 Hz-5 kHz 0.15 + 0.06 0.15 + 0.06 0.15 + 0.06 0.015 + 0.006 5 kHz-10 kHz 0.35 + 0.70 0.35 + 0.70 0.35 + 0.70 0.030 + 0.006 User’s Guide for DM3068...
  • Page 154 Specifications are for sinewave input >5% of range. For inputs from 1% to 5% of range, add 0.1% of range additional error. Specifications are typical values for 200 uA, 2 mA, 2 A and 10 A ranges when frequency is >1 kHz. User’s Guide for DM3068...
  • Page 155 The default measurement delay of the multimeter can ensure the correctness of the first readings of most of the measurements. Make sure the RC circuit of input terminal has been fully settled (about 1 s) before accurate measurement. User’s Guide for DM3068...
  • Page 156 Appling >300 Vrms (or >5 Arms) will cause self-heating in signal-conditioning components and the errors are included in the instrument specifications. Internal temperature changes due to self-heating may cause additional error on lower ac voltage ranges. The additional error will be less than 0.02% of reading and will generally dissipate within a few minutes. 6-10 User’s Guide for DM3068...

  • Page 157: Frequency And Period Characteristics

    20% to 110% of range. The maximum input is limited to 750 V rms or 8 x 10 Volts-Hz (whichever is less). 200 mV range is full range input or input that is larger than the full range. For 20 mV to 200 mV inputs, multiply % of reading error by 10. User’s Guide for DM3068 6-11...
  • Page 158 Errors will occur when attempting to measure the frequency or period of an input following a dc offset voltage change. The input blocking RC time constant must be allowed to fully settle (about 1 s) before the most accurate measurements are possible. 6-12 User’s Guide for DM3068...

  • Page 159: Capacitance Characteristics

    Apply constant current into the capacitance, and measure the voltage changing rate. Connection Type 2-wire Measurement Considerations Since small capacitance measurements are susceptible to error caused by external noise, shielding inputs from external noise pickup is critical for minimizing measurement errors. User’s Guide for DM3068 6-13...

  • Page 160: Temperature Characteristics

    Specification is for 4WR resistance measurement or 2WR resistance measurement using REL operation for sensor. Relative to cold junction temperature, accuracy is based on ITS-90. Built-in cold junction temperature refers to the temperature inside the banana jack and its accuracy is ±2.5 ℃. 6-14 User’s Guide for DM3068...
  • Page 161 The built-in cold junction temperature tracks the temperature inside the banana jack. The change of temperature in banana jack might cause additional error. When using the built-in cold junction compensation, connect the sensor terminal of the thermocouple to the banana jack and warm it up for more than 3 minutes to minimize the error. User’s Guide for DM3068 6-15...

  • Page 162: Measurement Rate

    200 Hz 200 Hz Frequency and 1s Gate Time Period 0.1 s 0.01 s 0.001 s Capacitance Auto trigger, zero trigger delay, auto zero off, auto range off, math function off and external interface off. 6-16 User’s Guide for DM3068...
  • Page 163 The maximum rate available when trigger delay is set to 0. 20V range, fast filter, 1kHz input. Measure 20nF capacitance on 200nF range. The measurement period changes with the capacitance under test. The maximum measurement period on 100mF is 4s (typical value). User’s Guide for DM3068 6-17...

  • Page 164: Other Measuring Characteristics

    Polarity: rising edge, falling edge available Maximum Rate: 300/s Minimum Pulse Width: 2 μs VMC Output Level: 5 V TTL compatible Output Impedance: 100 Ω, typical Output Polarity: Negative Pulse Width: about 2 μs History Record and Storage 6-18 User’s Guide for DM3068...
  • Page 165 10 sets history data storage (5000 readings/group) 5 sets sensor data storage (5000 readings/group) 10 sets instrument setup storage 5 sets any sensor setup storage Support USB storage device backup of data in internal memory. User’s Guide for DM3068 6-19...

  • Page 166: General Specifications

    (height×width×length): 107.0 mm×231.6 mm×290.5 mm Remote Interface GPIB, 10/100Mbit LAN, USB 2.0 Full Speed Device & Host (support USB storage device), RS-232C Programming Language SCPI LXI Compatibility LXI Class C, Version 1.2 Warm-up Time 90 minutes 6-20 User’s Guide for DM3068...

  • Page 167: Chapter 7 Appendix

    2 AC, 250 V, T125 mA fuses Quick Guide Resource CD (User’s Guide and Application Software) Kelvin Test Clip Optional RS232 Cable Accessories Rack Mount Kit RM-DM-3 Note: All the standard or optional accessories can be ordered from you local RIGOL Office. User’s Guide for DM3068...

  • Page 168: Appendix B: Warranty

    RIGOL warrants that its products mainframe and accessories will be free from defects in materials and workmanship within the warranty period. If a product is proven to be defective within the respective period, RIGOL guarantees the free replacement or repair of products which are approved defective.

  • Page 169: Index

    Front Switch ......2-79 SysSetting ........ 2-66 Gate time ......... 2-48 TC ........... 2-33 Integration time ......2-41 Temperature sensor ....2-33 THERM ........2-33 Invert ........2-77 IP Address ....... 2-72 Trigger Output ......2-64 User’s Guide for DM3068...

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