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SIGLENT TECHNOLOGIES SDM3055 Series User Manual

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SDM3055 Series
Digital Multimeter
User Manual
EN03B

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Summary of Contents for SIGLENT TECHNOLOGIES SDM3055 Series

  • Page 1 SDM3055 Series Digital Multimeter User Manual EN03B...

  • Page 3: Table Of Contents

    SDM3055 Series Digital Multimeter User Manual Contents Copyright and Statement ........................1 General Safety Summary ........................2 Safety Terms and Symbols ....................... 6 Daily Maintenance and Cleaning ...................... 7 Introduction of SDM3055 ........................8 Abstract ............................... 9 Chapter 1 Quick Start......................10 General Inspection ........................
  • Page 4 SDM3055 Series Digital Multimeter User Manual Measurement Parameters ......................51 AC Filter ..........................51 DC Input Impedance ......................51 Short-circuit Resistance ....................... 52 Dual-display Function ........................53 Utility Function ..........................56 Store and Recall ........................56 Manage File ......................... 58 I/O Configuration ........................
  • Page 5 SDM3055 Series Digital Multimeter User Manual Example 3: dBm Measurement ....................89 Example 4: dB Measurement ...................... 90 Example 5: Limits Test ........................ 92 Example 6: Thermocouple setting and measurement ..............94 Example 7: To Use Hold Measurement Function ................ 96 Example 8: To Use Application Software EasySDM ...............

  • Page 7: Copyright And Statement

    SDM3055 Series Digital Multimeter User Manual Copyright and Statement Copyright SIGLENT TECHNOLOGIES CO., LTD. All rights reserved. Trademark Information SIGLENT is registered trademark of SIGLENT TECHNOLOGIES CO., LTD. Statement ⚫ SIGLENT products are protected by patent laws in and outside of the P.R.China. ⚫...

  • Page 8: General Safety Summary

    SDM3055 Series Digital Multimeter User Manual General Safety Summary Read the following safety precautions carefully to avoid any personal injuries or damages to the instrument and any products connected to it. To avoid potential hazards, please use the instrument as specified.
  • Page 9 SDM3055 Series Digital Multimeter User Manual Antistatic protection. Static electricity will cause damages to the instrument, so test in antistatic areas as far as possible. Ground its inner and outer conductors to release the static electricity temporarily before connecting the cable to the instrument.
  • Page 10 SDM3055 Series Digital Multimeter User Manual Input terminal protection limitation Protection limitation is defined for the input terminal: Main input (HI and LO) terminal HI and LO terminals are used for Voltage, Resistance, Capacitance, Continuity, Frequency and Diode measurement. Two protection limitations are defined: ⚫...
  • Page 11 SDM3055 Series Digital Multimeter User Manual WARNING: IEC Measurement Category II includes electrical devices connected to mains at an outlet on a branch circuit, such as most small appliances, test equipments, and other devices that plug into a branch outlet or socket.

  • Page 12: Safety Terms And Symbols

    SDM3055 Series Digital Multimeter User Manual Safety Terms and Symbols Terms in this manual. Terms may appear in this manual. WARNING: Warning statements indicate the conditions and behaviors that could result in injury or loss of life. CAUTION: Caution statements indicate the conditions and behaviors that could result in...

  • Page 13: Daily Maintenance And Cleaning

    SDM3055 Series Digital Multimeter User Manual Daily Maintenance and Cleaning Maintenance When storing or placing the instrument, please avoid the liquid crystal display from direct sunlight for a long time. NOTE: To avoid damages to the instrument or probe, please don’t place them in mist, liquid or solvent.

  • Page 14: Introduction Of Sdm3055

    SDM3055 Series Digital Multimeter User Manual Introduction of SDM3055 SDM3055 is a 5½ dual-display instrument, especially fitting to the needs of high-precision, multifunction, and automation measurements. It realized a combination of basic measurement functions, multiple math functions, and display functions, etc.

  • Page 15: Abstract

    SDM3055 Series Digital Multimeter User Manual Abstract The manual mainly introduces corresponding information of operating the SDM3055 Digital Multimeter. It contains these chapters: Chapter 1 Quick Start Guide you to prepare the SDM3055 Digital Multimeter and know about the Front/Back panel and user interface.

  • Page 16: Chapter 1 Quick Start

    SDM3055 Series Digital Multimeter User Manual Chapter 1 Quick Start This chapter guides users to quickly get familiar with the front and rear panels, user interface and measurement connections of the multimeter. This chapter contains the following topics: ⚫ General Inspection ⚫...

  • Page 17: General Inspection

    SDM3055 Series Digital Multimeter User Manual General Inspection Inspect the shipping container. Please keep the damaged container or cushioning material until the contents of the shipment have been checked for completeness and the instrument has passed both electrical and mechanical tests.

  • Page 18: To Adjust The Handle

    SDM3055 Series Digital Multimeter User Manual To adjust the Handle Adjust the handle position of SDM3055 properly to place the instrument stably so that users can manipulate and observe the display better. Please grip the handle by the two sides and pull it outward.

  • Page 19: Front Panel

    SDM3055 Series Digital Multimeter User Manual Front Panel SDM3055 Digital Multimeter provides users with brief and clear front panel. These control buttons are group by logic and users only need choose corresponding buttons to carry out basic operations, as shown in Diagram 1-4.

  • Page 20: Back Panel

    SDM3055 Series Digital Multimeter User Manual Back Panel SDM3055 Digital Multimeter’s Back Panel provides users with abundant interfaces, including USB Device, USB Host, LAN and GPIB (Only for SDM3055A), as shown in the following diagram. Diagram 1-5 Back Panel Overview...

  • Page 21: Power On

    SDM3055 Series Digital Multimeter User Manual Power On Please power on the instrument as the following steps: Adjust AC Voltage Selector to 110 (100~120V, 45~440Hz, AC) or 220 (200~240V, 50/60Hz, AC) in accordance with power standards in your country; Connect the instrument to AC supply via power cord supplied by SIGLENT;...

  • Page 22: User Interface

    SDM3055 Series Digital Multimeter User Manual User Interface Trigger Mode LAN Status Icon Control Mode Measurement Function Measurement Result Operation Menu Measurement Range Diagram 1-6 Single Display Interface int.siglent.com...

  • Page 23: Scan Card

    SDM3055 Series Digital Multimeter User Manual Scan Card SDM3065x-sc in this multimeter supports 16 channel external patrol card and multi-point multi signal test. Table 1-1 Scan Card SC1016 measurement and test line connection. Items No. of wires Number of channels...
  • Page 24 SDM3055 Series Digital Multimeter User Manual ④ Lead out the connecting line from the opening of the cover plate as shown in the figure, and then fix the connecting line on the cable fixing base. ⑤ Insert the scan card SC1016 into the body along the guide rail, and lock the two screws again.
  • Page 25 SDM3055 Series Digital Multimeter User Manual Notes: Each channel of CH1-CH12 can be used for switching measurement of voltage, 2-W resistance, capacitance, frequency, continuity, diode, temperature, etc. CH13-CH16 channels are fixed for current measurement below 2.2A. 4-wire measurement mode int.siglent.com...

  • Page 26: Chapter 2 Function And Operation

    SDM3055 Series Digital Multimeter User Manual Chapter 2 Function and Operation ⚫ To Measure DC Voltage / Current ⚫ To Measure AC Voltage / Current ⚫ To Measure 2-Wire / 4-Wire Resistance ⚫ To Measure Frequency / Capacitance ⚫ To Test Continuity / Diode ⚫...

  • Page 27: To Select Measurement Range

    SDM3055 Series Digital Multimeter User Manual To Select Measurement Range The Multimeter has two kinds of modes of selecting measurement range: “Auto” and “Manual”. It can select appropriate range according to the signals input in Auto mode, which is very convenient for users.
  • Page 28 SDM3055 Series Digital Multimeter User Manual Diagram 2-2 Range selection menus Explanations: When the input signal is beyond the current scope of the measurement range, the Multimeter will show “overload”. Range option will turn back to default setting “Auto” after restarting and remote reset.

  • Page 29: To Select Measurement Speed

    SDM3055 Series Digital Multimeter User Manual To Select Measurement Speed The instrument provides three types of measurement rate: 5 reading/s, 50 reading/s and 150 reading/s. 5 reading/s belongs to “Slow” rate; 50 reading/s belongs to “Middle” rate; 150 reading/s belongs to “Fast”...

  • Page 30: Basic Measurement Functions

    SDM3055 Series Digital Multimeter User Manual Basic Measurement Functions SDM3055 Digital Multimeters have following basic functions: ⚫ To Measure DC Voltage ⚫ To Measure DC Current ⚫ To Measure AC Voltage ⚫ To Measure AC Current ⚫ To Measure 2-Wire/4-Wire Resistance ⚫...

  • Page 31: To Measure Dc Voltage

    SDM3055 Series Digital Multimeter User Manual To Measure DC Voltage The Multimeter enables to measure DC Voltage up to 1000V. The method to connect and measure DC Voltage will be introduced in details as the following steps. (NOTE: DC Voltage is always the selected function when the Multimeter is turned on)
  • Page 32 SDM3055 Series Digital Multimeter User Manual Table 2-1 Measurement Characteristics of DC Voltage Ranges* 200mV , 2V , 20V , 200V , 1000V Input Protection 1000V on all ranges (HI terminal) Configurable Range, DC input impedance, Rel NOTE*: ⚫ All the ranges enable to obtain 20% value higher than original except 1000V. Besides, both Manual and Auto are available for setting every range.

  • Page 33: To Measure Dc Current

    SDM3055 Series Digital Multimeter User Manual To Measure DC Current The Multimeter enables to measure DC Current up to 10A. The method to connect and measure DC Current will be introduced in details as the following steps. Operating Steps: Press on the front panel to enter the DC Current measurement interface, as shown in Diagram 2- 6.
  • Page 34 SDM3055 Series Digital Multimeter User Manual Table 2-2 Measurement Characteristics of DC Current 200μA , 2mA , 20mA , 200mA , 2A , 10A Ranges* Input Protection 10A(back panel), 12A(inside the instrument) Configurable Range, Rel NOTE*: All the ranges enable to obtain 20% value higher than original except 10A. Besides, both Manual and Auto are available for setting every range.

  • Page 35: To Measure Ac Voltage

    SDM3055 Series Digital Multimeter User Manual To Measure AC Voltage The Multimeter enables to measure AC Voltage up to 750V. The method to connect and measure DC Voltage will be introduced in details as the following steps. Operating Steps: Press on the front panel to enter the AC Voltage measurement interface, as shown in Diagram 2- 8.
  • Page 36 SDM3055 Series Digital Multimeter User Manual Table 2-3 Measurement Characteristics of AC Voltage Ranges* 200mV , 2V , 20V , 200V ,750V Input Protection 750Vrms on all ranges (HI terminal) Configurable Range, Rel NOTE*: ⚫ All the ranges enable to obtain 20% value higher than original except 750V. Besides, both Manual and Auto are available for setting every range.

  • Page 37: To Measure Ac Current

    SDM3055 Series Digital Multimeter User Manual To Measure AC Current The Multimeter enables to measure AC Current up to 10A. The method to connect and measure AC Current will be introduced in details as the following steps. Operating Steps: Press on the front panel to enter the AC Current measurement interface, as shown in Diagram 2-11.
  • Page 38 SDM3055 Series Digital Multimeter User Manual Table 2-4 Measurement Characteristics of AC Current 200μA , 2mA , 20mA , 200mA , 2A , 10A Ranges* Input Protection 10A(back panel), 250V(fuse), 12A(inside the instrument) Configurable Range, Rel NOTE*: All the ranges enable to obtain 20% value higher than original except 10A. Besides, both Manual and Auto are available for setting every range.

  • Page 39: To Measure 2-Wire/4-Wire Resistance

    SDM3055 Series Digital Multimeter User Manual To Measure 2-Wire/4-Wire Resistance The Multimeter enables to measure 2-Wire Resistance and 4-Wire Resistance. The method to connect and measure 2-Wire/4-Wire Resistance will be introduced in details separately. 2-Wire Resistance Operating Steps: Press on the front panel to enter the 2-Wire Resistance measurement interface, as shown in Diagram 2- 13.
  • Page 40 SDM3055 Series Digital Multimeter User Manual Choose a proper resistance range according to the scope. Table 2-5 Measurement Characteristics of 2-Wire Resistance 200μA , 2mA , 20mA , 200mA , 2A , 10A Ranges* Open-circuit Voltage <8V Input Protection 1000V on every range (HI terminal)
  • Page 41 SDM3055 Series Digital Multimeter User Manual 4-Wire Resistance Operating Steps: Press on the front panel to enter the 4-Wire Resistance measurement interface, as shown in Diagram 2- 14. Diagram 2-15 4-Wire Resistance Measurement Interface Connect the red lead to terminal Input-HI and black lead to terminal Input-LO as the following diagram.
  • Page 42 SDM3055 Series Digital Multimeter User Manual Table 2-6 Measurement Characteristics of 4-Wire Resistance 200Ω , 2kΩ , 20kΩ , 200kΩ , 2MΩ , 10MΩ , 100MΩ Ranges* Open-circuit Voltage <8V (1) 1000V on each range (HI terminal) Input Protection (2) 200V on each range (HI Sense, LO Sense)

  • Page 43: To Measure Capacitance

    SDM3055 Series Digital Multimeter User Manual To Measure Capacitance The Multimeter enables to measure Capacitance up to 1000μF. The method to connect and measure Capacitance will be introduced in details as the following steps. Operating Steps: Press on the front panel to enter the Capacitance measurement interface, as shown in Diagram 2- 17.
  • Page 44 SDM3055 Series Digital Multimeter User Manual Table 2-7 Measurement Characteristics of Capacitance 2nF , 20nF , 200nF , 2μF , 200μF , 200μF , 10000μF Ranges* Input Protection 1000V on all ranges (HI terminal) Configurable Parameters Range, Rel NOTE*: All the ranges enable to obtain 20% value higher than original. Besides, both Manual and Auto are available for setting every range.

  • Page 45: To Measure Frequency Or Period

    SDM3055 Series Digital Multimeter User Manual To Measure Frequency or Period The Frequency or Period of a signal could be obtained by Dual-display Function during measuring its voltage or current or by the function button on the front panel. The method to connect and measure Frequency or Period will be introduced in details as the following steps.
  • Page 46 SDM3055 Series Digital Multimeter User Manual Choose a proper voltage range according to the measured circuit. Table 2-8 Measurement Characteristics of Frequency Ranges 200mV, 2V, 20V, 200V, 750V Measurement Range 20Hz ~ 1MHz Input Protection 750Vrms on all ranges (HI terminal) Configurable Set relative value (Optional operation).
  • Page 47 SDM3055 Series Digital Multimeter User Manual To Measure Period Operating Steps: Press on the front panel and select [Period] to enter the Period measurement interface. The lower right corner of the screen shows the unit of Period, as shown in Diagram 2-...
  • Page 48 SDM3055 Series Digital Multimeter User Manual Table 2-9 Measurement Characteristics of Period Ranges 200mV, 2V, 20V, 200V, 750V Measurement Range 20Hz ~ 1MHz Input Protection 750Vrms on all ranges (HI terminal) Configurable Set relative value (Optional operation). Press [Rel] to open or close Relative math function. When it is open, the reading displayed is a relative value which comes from the result of actual measurement value subtracts the value that has been set.

  • Page 49: To Test Continuity

    SDM3055 Series Digital Multimeter User Manual To Test Continuity Continuity test uses double leads method to measure the resistance of the measured circuit via about 0.5mA current. When the measured resistance in circuit is lower than the selected one, it is considered being connected with instrument.
  • Page 50 SDM3055 Series Digital Multimeter User Manual Set the Short-circuit resistance. The default value is set as 50Ω before leaving factory. The value can be changed by using direction keys. You also can execute the Continuity measurement directly without modification. Table 2-10 Measurement Characteristics of Continuity Test Current Fixed at 2kΩ...

  • Page 51: To Test Diode

    SDM3055 Series Digital Multimeter User Manual To Test Diode If input voltage is under +0.7V (about 1.4kΩ), the Beeper will beep one time. If input voltage is under 50mV (about 100Ω) the Beeper will beep persistently. The method to test Diode will be introduced in details as the following steps.
  • Page 52 SDM3055 Series Digital Multimeter User Manual Table 2-11 Characteristics of Checking Diodes Test Current Ranges* Fixed at 2V Open-circuit Voltage <8V Input Protection 1000V (HI terminal) Beep Condition 0.1V≤V measured≤2.0V Read measurement result. Reverse the probes and measure the voltage in the diode once more. Evaluate the diode according to the following rules: ⚫...

  • Page 53: To Measure Temperature

    SDM3055 Series Digital Multimeter User Manual To Measure Temperature The Multimeter supports for two types of temperature sensor: TC and RTD. The method to connect and measure Temperature will be introduced in details as the following steps. Operating Steps: Press on the front panel to enter the Temperature measurement interface, as shown in Diagram 2- 27.
  • Page 54 SDM3055 Series Digital Multimeter User Manual Diagram 2-29 Load a Configuration File Press [Browse] to view the configuration, as shown in the following diagram: Diagram 2-30 Configuration of the Sensor Press [Display] to choose a display mode. The Multimeter supports three display modes: Temperature Value, Measured Value and All.
  • Page 55 SDM3055 Series Digital Multimeter User Manual Press [All], the measured value will be shown on the Vice display and the corresponding value will be shown on the Main display at the same time, which is convenient for users to observe temperature and voltage values.
  • Page 56 SDM3055 Series Digital Multimeter User Manual Diagram 2-34 Set external Cold Junction Compensation Set relative value (Optional operation). Press [Rel] to open or close Relative math function. When it is opened, the reading displayed is a relative value which comes from the result of actual measurement value subtracts the value that has been set.

  • Page 57: Measurement Parameters

    SDM3055 Series Digital Multimeter User Manual Measurement Parameters The parameters have been configured before the Multimeter leaving factory. Users can either measure directly or modify them to meet your own requirements. AC Filter AC Filter is applicable for DC Voltage and DC Current measurement. When DC Voltage or DC Current function is selected, press [Filter] to open the filter, as shown in the following diagram.

  • Page 58: Short-Circuit Resistance

    SDM3055 Series Digital Multimeter User Manual chosen for better result. The current selection will be saved in nonvolatile memory. DC input impedance selection: ⚫ While the DC input impedance is selected as 10MΩ, the input impedance of all measurement range is 10MΩ;...

  • Page 59: Dual-Display Function

    SDM3055 Series Digital Multimeter User Manual Dual-display Function The Dual-display function is used to turn on two basic measurement functions, and observe the two measurement results at the same time, thus improve the test and measurement functions. For available combinations of Dual-display, refer to the following table.
  • Page 60 SDM3055 Series Digital Multimeter User Manual Take the Main Display DCV and the Vice Display DCI as an example, press , and Diagram 2-38 Dual-display function Interface (Main DCV, Vice DCI) Make connection Connect the test leads with the measured signal by referring to “Measurement Connections”. As shown in the Diagram below, power source refers to connecting DC / AC power or not.
  • Page 61 SDM3055 Series Digital Multimeter User Manual Instruction: If the same measurement function is used in both Main and Vice Display. ⚫ The readings in both of the display will update at the same time. ⚫ If math function (dBm, dB) is used in Main Display, when opening Vice Display, math operation will be closed automatically and Vice Display will show the same measurement result as Main Display.

  • Page 62: Utility Function

    SDM3055 Series Digital Multimeter User Manual Utility Function The Utility function enables users to set up system parameters, interface parameters of the multimeters. Press to enter the operating menu of Utility function, as the following diagram shows. Diagram 2-40 Utility Function Configuration Interface...
  • Page 63 SDM3055 Series Digital Multimeter User Manual Diagram 2-40 Store and Recall Interface Press [Store Settings] to enter the following interface. Diagram 2-41 Store Settings Interface Table 2-14 Storage Function Menu Description Function Menu Settings Description Browse Choose the location that file will be saved.

  • Page 64: Manage File

    SDM3055 Series Digital Multimeter User Manual Diagram 2-42 Recall Function Interface Press [Power on] to set the Power On state of the instrument. ⚫ You can choose [Last] or [Factory Default] as the initial state when the instrument is turned ⚫...
  • Page 65 SDM3055 Series Digital Multimeter User Manual Choose the file location. Press [Browse] and use direction keys to select the corresponding file. Press [File Name] to enter the following interface. Diagram 2-44 Input File Name The method of inputting file name: ⚫...

  • Page 66: I/O Configuration

    SDM3055 Series Digital Multimeter User Manual I/O Configuration Press [I/O Config] to enter the following interface and set up the parameters. Diagram 2-45 I/O Configuration Interface LAN Settings The Multimeter enables users to operate instrument remotely by LAN interface and store or recall internet settings.

  • Page 67: Board Test

    SDM3055 Series Digital Multimeter User Manual Operating Steps: After entering into the function menu of I/O configuration, press [GPIB Settings] to enter the interface shown in diagram 2-45. Diagram 2-47 GPIB Settings Users can change the value of GPIB address by direction keys.
  • Page 68 SDM3055 Series Digital Multimeter User Manual Table 2-17 Board Test Function Description Function Menu Description Test the instrument’s keys. Test the instrument’s LCD screen. Test the instrument’s beeper. Beeper Test the instrument’s chips. Chip Done Return the higher-level menu. Test the keys.
  • Page 69 SDM3055 Series Digital Multimeter User Manual Diagram 2-49 LCD Test Interface NOTE: ⚫ Press [Change] to change the color of the screen. There are three colors: red, blue and green. ⚫ Press [Done] to exit the test. Test the beeper.

  • Page 70: Firmware Update

    SDM3055 Series Digital Multimeter User Manual Firmware Update The software of the Multimeter can be updated directly via USB flash drive, updating current software version to desired software version. Operating Steps: Copy the update file to the USB flash drive.
  • Page 71 SDM3055 Series Digital Multimeter User Manual Table 2-18 System Settings Menu Description Function Menu Description Language Select the display interface language. Calibration Recalibration function. Firmware Update System firmware update by user. Screen Set up the screen protection function. System Info View system information.
  • Page 72 SDM3055 Series Digital Multimeter User Manual Diagram 2-52 System Information int.siglent.com...

  • Page 73: Acquire

    SDM3055 Series Digital Multimeter User Manual Acquire Sampling is a process of acquiring and digitizing signal. The optional Trigger methods of the Multimeter include Auto Trigger, Single Trigger and External Trigger. Press to enter the interface shown as the following diagram:...

  • Page 74: Single Trigger

    SDM3055 Series Digital Multimeter User Manual [Delay] to select Auto or Manual mode. When choosing Manual mode, Left and Right keys are used to switch the number of a numerical value, Up and Down keys are used to change the selected value.

  • Page 75: External Trigger

    SDM3055 Series Digital Multimeter User Manual Set the number of samples or trigger. Press [Samples/Trigger] to set sample count. Set the VMC Out. Press [VMC Out] to choose Positive or Negative polarity. External Trigger The external trigger signal will be input via EXT TRIG interface on the rear panel. External trigger parameters that need to be set up include delay, samples /trigger, slope and VMC out.

  • Page 76: Help System

    SDM3055 Series Digital Multimeter User Manual Help System SDM3055 provides powerful built-in help system. You can recall help information at any time during using the instrument. You also can get a particularly help for every button on the front panel or menu softkey by using the built-in help system.
  • Page 77 SDM3055 Series Digital Multimeter User Manual Dual-display Function. Get the method to use the dual-display function while you are measuring. Saving and Recalling Information. Introduce how to store and recall the data/parameter/ sensors files. Optional Multiple Scan Card. Get help about operating optional multiple scan cards.

  • Page 78: Math Function

    SDM3055 Series Digital Multimeter User Manual Math Function The Multimeter provides five math functions: Statistics, Limits, dBm, dB and Relative. Choose different math functions to meet different measurement demands. Math functions can only be used in DC Voltage, AC Voltage, DC Current, AC Current, Resistance, Frequency, Period and Temperature measurement.

  • Page 79: Statistics

    SDM3055 Series Digital Multimeter User Manual Table 2-21 Math Function Menu Description Function Menu Settings Description Reading statistic functions, including: max, min, average, Statistics span, std dev and samples. The Limits function performs Pass/Fail testing according to Limits the specified upper and lower limits.

  • Page 80: Limits

    SDM3055 Series Digital Multimeter User Manual Table 2-22 Statistic Measurement Menu Function Description Function Menu Settings Description Statistics Show/Hide Show or hide the statistics function interface. Show the minimum statistics value of current measurement. Average Show the average statistics value of current measurement.
  • Page 81 SDM3055 Series Digital Multimeter User Manual Table 2-23 Limits Measurement Menu Function Description Function Menu Settings Description Limits On/Off Turn on or turn off the Limits function. Set the desired lower limit. Center Set the desired center value High Set the desired upper limit.

  • Page 82: Dbm

    SDM3055 Series Digital Multimeter User Manual The dBm function is logarithmic and based on a calculation of power delivered to a reference resistance, relative to 1 mill watt. Besides, this function only applies to AC voltage and DC voltage measurements.
  • Page 83 SDM3055 Series Digital Multimeter User Manual Each dB measurement is different between the input signal and a stored relative value, with both values converted to dBm. The dB function applies to AC voltage and DC voltage measurements only. → [dB/dBm On] and select [shown in the following diagram. Function dB] to enter the...

  • Page 84: Relative Value

    SDM3055 Series Digital Multimeter User Manual Relative Value Relative value is used for relative measurement. Actual measurement reading is the depression between measurement value and preset value. The Multimeter allows operating for the following parameters: DC Voltage, AC Voltage, DC Current, AC Current, Resistance, Frequency, Period, Capacitance and Temperature.

  • Page 85: Display Mode

    SDM3055 Series Digital Multimeter User Manual Display Mode The Multimeter supports four types of way to view measured data: “Number”, “Bar Meter” “Trend Chart” and “Histogram”. Number Press to open the menu of display mode and press [Display] to enter the following interface.
  • Page 86 SDM3055 Series Digital Multimeter User Manual Table 2-27 To Set the Vertical Scale of Bar Meter manually Function Menu Description Set the low value of horizontal scale. High Set the high value of horizontal scale. Center Set the center value of horizontal scale.
  • Page 87 SDM3055 Series Digital Multimeter User Manual Diagram 2-70 Auto Vertical Scale Press [Manual] and you can set the vertical scale manually, as the following diagram shows. Diagram 2-65 Manual Vertical Scale Histogram Operating Steps: Press [Histogram] to enter Histogram display mode.
  • Page 88 SDM3055 Series Digital Multimeter User Manual Table 2-29 Histogram Display Mode Function Menu Settings Description Display Currently selected display mode is Histogram. Histogram Binning Set Binning as Auto or Manual mode. Bin Set Set the parameters of Bin. Cumulative On/Off Turn on or off Cumulative function.

  • Page 89: Trigger

    SDM3055 Series Digital Multimeter User Manual Trigger The Multimeter supports Trigger function. Press on the front panel to trigger the Multimeter by Auto or Single mode. Auto trigger is considered as a default when the power is on. Auto Trigger...

  • Page 90: Hold Measurement Function

    SDM3055 Series Digital Multimeter User Manual Hold Measurement Function Hold Measurement function provides users with a stable reading on the screen of the front panel. When the test leads are put away, the reading is still held on the screen, which makes users can view measured history data.

  • Page 91: Chapter 3 Application Examples

    SDM3055 Series Digital Multimeter User Manual Chapter 3 Application Examples This chapter mainly introduces few application examples to help users control and manipulate SDM3055 quickly. ⚫ Example 1: Reading Statistic Functions ⚫ Example 2: To Eliminate Leads Impedance ⚫ Example 3: dBm Measurement ⚫...

  • Page 92: Example 1: Reading Statistic Functions

    SDM3055 Series Digital Multimeter User Manual Example 1: Reading Statistic Functions Introduce how to realize the statistic function during measuring. When continually measuring few readings, the Multimeter will update statistic values constantly. Operating Steps: Press on the front panel to select AC Voltage measurement function and choose a proper voltage range.

  • Page 93: Example 2: To Eliminate Leads Impedance

    SDM3055 Series Digital Multimeter User Manual Example 2: To Eliminate Leads Impedance Relative Operation could eliminate impedance errors from leads when measuring smaller resistance. Operating Steps: Press on the front panel to select 2-Wire Resistance measurement function. Connect the red lead to terminal Input-HI and black lead to terminal Input-LO as Diagram 2-14.
  • Page 94 SDM3055 Series Digital Multimeter User Manual Diagram 3-5 Lead Impedance after Operation int.siglent.com...

  • Page 95: Example 3: Dbm Measurement

    SDM3055 Series Digital Multimeter User Manual Example 3: dBm Measurement dBm is commonly used in audio signal measurement. The following will introduce you how to measure dBm value. Operating Steps: Press on the front panel to select AC Voltage measurement function and choose a proper voltage range.

  • Page 96: Example 4: Db Measurement

    SDM3055 Series Digital Multimeter User Manual Example 4: dB Measurement As a common measuring unit, dB has been widely used in electrical engineering, radio science, mechanics, shock and vibration, mechanical power and acoustics areas. The following will introduce you how to measure dB between two circuits.
  • Page 97 SDM3055 Series Digital Multimeter User Manual Diagram 3-9 dB Operation Result int.siglent.com...

  • Page 98: Example 5: Limits Test

    SDM3055 Series Digital Multimeter User Manual Example 5: Limits Test Limits Operation hints you the signal is overstep its range according to the selected High and Low Limit parameters; meanwhile the beeper makes a sound to alarm (if sound is on.)
  • Page 99 SDM3055 Series Digital Multimeter User Manual So the instrument beep once, and the main display is red. The test status is “Fail” and High Failures is shown. As the following diagram shows. Diagram 3-12 Limits Test Result int.siglent.com...

  • Page 100: Example 6: Thermocouple Setting And Measurement

    SDM3055 Series Digital Multimeter User Manual Example 6: Thermocouple setting and measurement Thermocouple is a common temperature sensor. Type, voltage and cold-side temperature are required for thermocouple measurement. The instrument can measure temperature of HI and LO terminals (cold-side), and calculate absolute temperature of hot-side.
  • Page 101 SDM3055 Series Digital Multimeter User Manual Diagram 3-15 Select Sensor Settings File Press [Units] to choose the unit of temperature. View measured result. Press [Display] and select display mode of measurement result as “All” to view measurement value and its corresponding value.

  • Page 102: Example 7: To Use Hold Measurement Function

    SDM3055 Series Digital Multimeter User Manual Example 7: To Use Hold Measurement Function Reading Hold can help user to obtain a stable reading and hold it on the display of Front Panel. The reading would be held all the same although testing pen had been moved away. Then we will introduce how to keep the readings displayed on screen.

  • Page 103: Example 8: To Use Application Software Easysdm

    SDM3055 Series Digital Multimeter User Manual Example 8: To Use Application Software EasySDM Remote Control function based on EasySDM enables users to operate instrument remotely. The software supports basic measurements, Acquire, Statistics, Trend Chart and Histogram, etc. The method to use the software will be introduced in details as the following steps.

  • Page 104: Chapter 4 Measurement Tutorial

    SDM3055 Series Digital Multimeter User Manual Chapter 4 Measurement Tutorial True RMS AC Measurement The AC measurement of the Multimeter has true RMS response. The power dissipated in a resistor within a time is proportional to the square of the measured true RMS voltage, independent of wave shape.

  • Page 105: Crest Factor Errors (Non-Sinusoidal Inputs)

    SDM3055 Series Digital Multimeter User Manual Crest Factor Errors (non-sinusoidal inputs) A common misconception is that "since an ac Multimeter is true RMS, its sine wave accuracy specifications apply to all waveforms." Actually, the shape of the input signal can dramatically affect measurement accuracy.

  • Page 106: Loading Errors (Ac Voltage)

    SDM3055 Series Digital Multimeter User Manual Loading Errors (AC Voltage) In the AC Voltage function, the input of SDM3055 appears as a 1MΩ resistance in parallel with 100pF of capacitance. The test lead that you use to connect signals to the Multimeter will also add additional capacitance and loading.

  • Page 107: Application Of The Analog Filter

    SDM3055 Series Digital Multimeter User Manual Application of the Analog Filter The analog filter of the Multimeter can be used to reduce the influence of the AC component in DC measurement. Generally, the filter may not be required, but sometimes it can improve the DC measurement.
  • Page 108 SDM3055 Series Digital Multimeter User Manual Table 4-4 Analog Filter Error in DCI measurement Range Reading Rate Additional Analog Filter Error Slow 0.002% range 200μA Middle 0.005% range Fast 0.005% range Slow 0.040% range Middle 0.060% range 20mA，2A Fast 0.080% range Slow 0.004% range...

  • Page 109: Chapter 5 General Troubleshooting

    SDM3055 Series Digital Multimeter User Manual Chapter 5 General Troubleshooting The following is a list of the troubles that you may meet while using the Multimeter and their solutions. Please handle as the corresponding steps when meeting these troubles. If you still can’t handle them, please contact SIGLENT in time.

  • Page 110: Chapter 6 Appendix

    SDM3055 Series Digital Multimeter User Manual Chapter 6 Appendix Appendix A: Accessories Standard Accessories: ⚫ A Power Cord that fits the standard of destination country. ⚫ Two test leads (black and red) ⚫ An USB Cable One backup fuses A Quick Start ⚫...

  • Page 111: Appendix B: Warranty Summary

    SDM3055 Series Digital Multimeter User Manual Appendix B: Warranty summary SIGLENT warrants that the products that it manufactures and sells will be free from defects in materials and workmanship for a period of three years from the date of shipment from an authorized SIGLENT distributor.

  • Page 112: Appendix C: Daily Maintenance And Cleaning

    SDM3055 Series Digital Multimeter User Manual Appendix C: Daily Maintenance and Cleaning Maintenance When storing or placing the instrument, please avoid the liquid crystal display from direct sunlight for a long time. NOTE: To avoid damages to the instrument or probe, please don’t place them in mist, liquid or solvent.

  • Page 113: Appendix D: Contact Siglent

    SDM3055 Series Digital Multimeter User Manual Appendix D: Contact SIGLENT SIGLENT TECHNOLOGIES CO., LTD. Address: 3F, NO.4 building, Antongda Industrial Zone, 3rd Liuxian Road, 68th District, Baoan District, Shenzhen, P.R. China Tel: +86-755-36615186 Fax: +86-755-3591582 Post Code: 518101 sales@siglent.com E-mail: https://www.siglent.com...
  • Page 114 SDM3055 Series Digital Multimeter User Manual About SIGLENT SIGLENT is an international high-tech company, concentrating on R&D, sales, production and services of electronic test & measurement instruments. SIGLENT first began developing digital oscilloscopes independently in 2002. After more than a decade of continuous development, SIGLENT has extended...

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