GW Instek GDM-532 User Manual
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GW Instek GDM-532 User Manual

Handheld digital multimeter
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Handheld Digital Multimeter
GDM-532
USER MANUAL
ISO-9001 CERTIFIED MANUFACTURER

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Summary of Contents for GW Instek GDM-532

  • Page 1 Handheld Digital Multimeter GDM-532 USER MANUAL ISO-9001 CERTIFIED MANUFACTURER...
  • Page 2 This manual contains proprietary information, which is protected by copyright. All rights are reserved. No part of this manual may be photocopied, reproduced or translated to another language without prior written consent of Good Will company. The information in this manual was correct at the time of printing. However, Good Will continues to improve products and reserves the rights to change specification, equipment, and maintenance procedures at any time without notice.

  • Page 3: Table Of Contents

    Table of Contents Table of Contents SAFETY INSTRUCTIONS ..........4 GETTING STARTED ............8 GDM-532 Overview ..........9 OPERATION ..............13 Operating Instructions .......... 14 Others ..............29 SPECIFICATIONS ............30 General Specifications ........... 30 Technical Specifications ........31 MAINTENANCE ............. 37 General Meintenance ..........

  • Page 4: Safety Instructions

    GDM-532 User Manual AFETY INSTRUCTIONS This chapter contains important safety instructions that you must follow during operation and storage. Read the following before any operation to ensure your safety and to keep the instrument in the best possible condition. Safety Standards The meter is designed according to BS EN 61010-1;...
  • Page 5 SAFETY INSTRUCTIONS Electrical Symbols These safety symbols may appear in this manual or on the instrument. Caution Alternating current Grounding Direct Current Double insulated Warning Conform to EU directive CAT III Measurement category III is applicable to test and measure circuits connected to the distribution part of the building’s low-voltage MAINS installation.
  • Page 6 GDM-532 User Manual Safety Information Do not use the meter if the rear cover is not completely covered  up, or it may pose a shock hazard. Check and make sure the insulation of the meter and test leads is ...
  • Page 7 SAFETY INSTRUCTIONS Do not use or store the meter in high temperature, high humidity,  flammable, explosive, or strong magnetic field environments. Clean the meter casing with a damp cloth and mild detergent. Do  not use abrasives or solvents. Use of test probe ...
  • Page 8 GDM-532 User Manual ETTING STARTED This chapter describes the GDM-532 in a nutshell, including its main features and front/ rear panel introduction. GDM-532 Overview ..........9 Overview ..................... 9 Features ....................9 Accessories ..................10 External Structure ................11 Function Buttons ................12...

  • Page 9: Getting Started

    GETTING STARTED GDM-532 Overview Overview GDM-532 is a 9999-count true RMS digital multimeter with high resolution, auto range and new intelligent ADC chip. Designed according to CAT II 1000V/CAT III 600V, the meter comes with overvoltage and overcurrent alarms, and a false detection protector for 6kV electric shock and high voltages.

  • Page 10: Accessories

    GDM-532 User Manual Accessories Before using the GDM unit, check the package contents to make sure all the accessories are included. If any of the follows is missing or damaged, please contact your supplier immediately. Standard Accessories Description User manual*1 pc...

  • Page 11: External Structure

    GETTING STARTED External Structure Item Index Description LCD Display Function buttons Dial switch mA /10A input terminal µA input terminal COM input terminal Other terminals Hook Probe holder Bracket...

  • Page 12: Function Buttons

    GDM-532 User Manual Function Buttons Button Description SEL Button: Press this button to switch between DCV, frequency/duty cycle, ℃/℉ and AC/DC current. continuity/resistance/diode/capacitance, Each time you press it, the corresponding measuring range will be switched alternately. RANGE Button: When the dial switch is in position of V, mV,...

  • Page 13: Operation

    OPERATION PERATION Operating Instructions .......... 14 AC/DC Voltage Measurement ............. 14 Continuity Test ................. 16 Resistance Measurement ..............17 Diode Test ..................19 Capacitance Measurement .............. 20 Frequency Measurement ..............22 Duty Cycle Measurement ............... 23 AC/DC Current Measurement ............. 24 Temperature Measurement ............

  • Page 14: Operating Instructions

    GDM-532 User Manual Operating Instructions AC/DC Voltage Measurement Wire Connection Diagram 1. Turn the function dial to the AC/DC voltage Steps of position or the mV small voltage (<99.99mV) Measurement position. 2. Insert the red test lead into the “VΩ” terminal, black test lead into the “COM”...
  • Page 15 OPERATION Do not input a voltage over 1000V, or it may  damage the meter and hurt the user. Warnings If the range of the measured voltage is  unknown, select the maximum range and then accordingly reduce (if the LCD displays “OL”, it indicates that the voltage is over range).

  • Page 16: Continuity Test

    GDM-532 User Manual Continuity Test Wire Connection Diagram 1. Turn the function dial to the continuity test Steps of position. Measurement 2. Insert the red test lead into the “VΩ” terminal, black test lead into the “COM” terminal, and make the probes in contact with the two test points.

  • Page 17: Resistance Measurement

    OPERATION Resistance Measurement Wire Connection Diagram 1. Turn the function dial to the resistance Steps of measurement position. Measurement 2. Insert the red test lead into the “VΩ” terminal, black test lead into the “COM” terminal, and make the probes in contact with both ends of the measured resistance (parallel connection to the resistance).
  • Page 18 GDM-532 User Manual Before measuring resistance, Switch off the  power supply of the circuit and discharge all Warnings capacitors before measuring resistance. If the resistance is not less than 0.5Ω when the  test leads are shorted, please check if the test leads are loose or abnormal.

  • Page 19: Diode Test

    OPERATION Diode Test Wire Connection Diagram 1. Turn the function dial to the diode test Steps of position. Measurement 2. Insert the red test lead into the “VΩ ” terminal, black test lead into the “COM” terminal, and make the probes in contact with the two endpoints of the PN junction.

  • Page 20: Capacitance Measurement

    GDM-532 User Manual Capacitance Measurement Wire Connection Diagram 1. Turn the function dial to the capacitance Steps of measurement position. Measurement 2. Insert the red test lead into the “VΩ” terminal, black test lead into the “COM”. 3. When there is no input, the meter displays a fixed value (intrinsic capacitance).
  • Page 21 OPERATION If the measured capacitor is shorted or the  capacitance exceeds the maximum range, the LCD will display “OL”. Warnings When measuring high capacitance, it is  normal to take a few seconds to stabilize the reading. Before measuring, discharge all capacitors ...

  • Page 22: Frequency Measurement

    GDM-532 User Manual Frequency Measurement Wire Connection Diagram 1. Turn the function dial to the “Hz/%” Steps of position. Measurement 2. Insert the red test lead into the “VΩHz” terminal, black test lead into the “COM” terminal, and connect the test leads to both ends of the signal source in parallel.

  • Page 23: Duty Cycle Measurement

    OPERATION Duty Cycle Measurement Wire Connection Diagram 1. Turn the function dial to Hz/% position, short Steps of press SEL button to enter duty cycle Measurement measurement interface. 2. Insert the red test lead into the “VΩHz” terminal, black test lead into the “COM” terminal, and connect the test leads to both ends of the signal source in parallel (measuring range is ≤10Hz).

  • Page 24: Ac/Dc Current Measurement

    GDM-532 User Manual AC/DC Current Measurement Wire Connection Diagram 1. Turn the function dial to mA/A or µA Steps of measurement position. Measurement 2. Insert the red test lead into “mA/A” or “µA”, and black test lead into “COM” terminal.
  • Page 25 OPERATION Switch off the power supply of the circuit,  make sure the input terminals and dial position are correct, and then connect the Warnings meter to the circuit in series. If the range of the measured current is  unknown, select the maximum range and then accordingly reduce.

  • Page 26: Temperature Measurement

    GDM-532 User Manual Temperature Measurement Wire Connection Diagram 1. Turn the function dial to the temperature Steps of measurement position. Measurement 2. Insert the K-type thermocouple into the “VΩ” and “COM” terminals, and fix the temperature sensing end of the thermocouple on the object under test, read the temperature from LCD after the value stabilizes.

  • Page 27: Non-Contact Voltage (Ncv) Sensing

    OPERATION Non-Contact Voltage (NCV) Sensing Wire Connection Diagram 1. To sense whether there is AC voltage or Steps of electric field in the space, please turn the Measurement function dial to the “NCV” position. The meter defaults to “EFLo”, short press SELECT to switch to EFHi.
  • Page 28 GDM-532 User Manual 3. In HFHi mode, bring the front end of the meter close to a socket or insulated wire (≥74V±12V). When an electric field is sensed, the buzzer will beep, the LED will flash and display the segment "-", as the intensity of the measured electric field increases, more segments (up to “-...

  • Page 29: Others

    OPERATION Others The meter cannot enter the normal Additional  measurement status until its full display for operations about 2s after the starting up. During measurement, if there is no operation  of the function dial for 15 minutes, the meter will automatically shut down to save power.

  • Page 30: Specifications

    GDM-532 User Manual PECIFICATIONS General Specifications The maximum voltage between input terminal and earth ground is 1000Vrms. 10A terminal is equipped with 10A 1000V quick-acting fuse, Φ6.35×32mm. 9999-count display, show “OL” when overrange, update 3 times per second. Range: Auto Backlight: manually turn on and auto turn off after 30 seconds.

  • Page 31: Technical Specifications

    SPECIFICATIONS Technical Specifications Accuracy: ± (a% of reading + b digits), 1 year warranty Ambient temperature: 23˚C ± 5˚C (73.4˚F ± 9˚F) Ambient humidity: ≤75% To ensure measurement accuracy, the operating  temperature should be within 18°C~28°C and the fluctuation range should be within ±1°C. Note Temperature coefficient: 0.1 x (specified ...

  • Page 32: Dc Voltage

    GDM-532 User Manual DC Voltage Range Resolution Accuracy 9.999mV 0.001mV ±(0.7%+8) [10%~100% of the Range] 99.99mV 0.01mV 999.9mV 0.1mV 9.999V 0.001V ±(0.5%+3) 99.99V 0.01V 999.9V 0.1V Input impedance: About 10MΩ for DCV, about 3GΩ for  DCmV. Unstable digits display when the circuit is open in mV range, the digits stabilize (≤...

  • Page 33: Resistance

    SPECIFICATIONS Resistance Range Resolution Accuracy 999.9Ω 0.1Ω ±(0.8％＋5) 9.999kΩ 0.001kΩ ±(0.8％＋2) 99.99kΩ 0.01kΩ 999.9kΩ 0.1kΩ ±(1.5％+3) 9.999MΩ 0.001MΩ ±(2.0％+5) 99.99MΩ 0.01MΩ Measurement result = displayed value – resistance of  shorted test leads. Overload protection: 1000V  Continuity and Diode Range Resolution Remarks...

  • Page 34: Capacitance

    GDM-532 User Manual Capacitance Range Resolution Accuracy 9.999nF 0.001nF ±(4%+10) 99.99nF 0.01nF 999.9nF 0.1nF 9.999μF 0.001μF ±(4%+5) 99.99μF 0.01μF 999.9μF 0.1μF 9.999mF 0.001mF ±10% For capacitance ≤100nF, it is recommended to use REL  mode to ensure measurement accuracy. Overload protection: 1000Vrms (DC/AC) ...

  • Page 35: Dc Current

    SPECIFICATIONS DC Current Range Resolution Accuracy 999.9μA 0.1μA ±（0.8%+3) 999.9mA 0.1mA ±（1.0%+3) 9.999A 0.001A The alarm sounds at ≥9.900A. “OL” is displayed at  >10.00A. Overload protection: 1000Vrms  AC Current Range Resolution Accuracy ±（1.0%+3) 999.9μA 0.1μA 999.9mA 0.1mA ±（1.2%+3) 9.999A 0.001A Frequency response: 40Hz~400Hz...

  • Page 36: Frequency

    GDM-532 User Manual Frequency Range Resolution Accuracy 99.99Hz～9.999MHz 0.01Hz～0.001MHz ±(0.1%+5) Input amplitude:  ≤100kHz: 200mVrms ≤ input amplitude ≤ 30Vrms >100kHz~1MHz: 500mVrms ≤ input amplitude ≤ 30Vrms >1MHz: 900mVrms ≤ input amplitude ≤ 30Vrms Overload protection: 1000Vrms (DC/AC)  Duty cycle...

  • Page 37: Maintenance

    MAINTENANCE AINTENANCE  Switch off the power supply and remove the test leads before opening the rear cover. WARNING General Maintenance Clean the meter casing with a damp cloth and mild detergent.  Do not use abrasives or solvents. If there is any malfunction, stop using the meter and send it for ...
  • Page 38 GDM-532 User Manual Fuse Replacement 1. Turn the function dial to the "OFF" position, Steps of remove the test leads from the input Replacement terminals, and remove the protective cover. 2. Unscrew and remove the rear cover. 3. Replace the blown fuse (specifications: Fuse 10A/1000V Φ6.35×32mm ceramic tube).

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