GW Instek GDM-834X Series User Manual
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GW Instek GDM-834X Series User Manual

Dual measurement multimeter
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Dual Measurement Multimeter
GDM-834X Series
USER MANUAL
GW INSTEK PART NO. 82DM-83420EC1
ISO-9001 CERTIFIED MANUFACTURER

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  • Page 1 Dual Measurement Multimeter GDM-834X Series USER MANUAL GW INSTEK PART NO. 82DM-83420EC1 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 ........... 5 GETTING STARTED ............10 Characteristics .......... 11 Appearance ..........14 Set Up ............24 OPERATION ..............29 Basic Measurement Overview ....31 AC/DC Voltage Measurement ....33 AC/DC Current Measurement ....38 Resistance Measurement ......
  • Page 4 GDM-834X Series User Manual Frequency/Period Input Jack Settings ..80 Compatibility Settings ....... 81 Restore Factory Default Settings ....82 USB STORE ..............83 USB Store Overview ........84 REMOTE CONTROL ............101 Configure Remote Control Interface ..102 Return to Local Control ......105 COMMAND OVERVIEW ..........

  • Page 5: Safety Instructions

    SAFETY INSTRUCTIONS 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 Symbols These safety symbols may appear in this manual or on the instrument.
  • Page 6 GDM-834X Series User Manual Safety Guidelines Make sure that the voltage input level does not General  Guideline exceed DC1000V/AC750V. Make sure the current input level does not  CAUTION exceed 12A. Do not place any heavy object on the ...
  • Page 7 SAFETY INSTRUCTIONS AC Input voltage: 100/120/220/240 V AC Power Supply  50/60Hz  WARNING The power supply voltage should not fluctuate  more than 10%. Connect the protective grounding conductor of  the AC power cord to an earth ground, to avoid electrical shock.
  • Page 8 GDM-834X Series User Manual (Note) EN 61010-1:2010 specifies the pollution degrees and their requirements as follows. The GDM-8342/8341 falls under degree 2.  Pollution refers to “addition of foreign matter, solid, liquid, or gaseous (ionized gases), that may produce a reduction of dielectric strength or surface resistivity”.
  • Page 9 SAFETY INSTRUCTIONS Power cord for the United Kingdom When using the unit in the United Kingdom, make sure the power cord meets the following safety instructions. NOTE: This lead/appliance must only be wired by competent persons WARNING: THIS APPLIANCE MUST BE EARTHED IMPORTANT: The wires in this lead are coloured in accordance with the following code: Green/ Yellow:...
  • Page 10 GDM-834X Series User Manual ETTING STARTED This chapter describes the GDM-8342 and GDM-8341 multimeters in a nutshell, including accessories, and package contents, their main features and front / rear panel introduction. Characteristics ..............11 Accessories ..............12 Package Contents ............13 Appearance ..............

  • Page 11: Getting Started

    GETTING STARTED Characteristics The GDM-8342 and GDM-8341 are portable, dual-display digital multimeters suitable for a wide range of applications, such as production testing, research, and field verification. DCV accuracy: 0.02% Performance  High current range: 10A  High Voltage range: 1000V ...

  • Page 12: Accessories

    GDM-834X Series User Manual Accessories Standard Part number Description Accessories 82DM-83420Ex1 User Manual CD 82DM-83421Mx1 Safety Instruction Sheet GTL-207 Test leads: 1x red, 1x black Optional Part number Description Accessories 1040-8342020 GPIB (Factory installed, GDM-8342 only) GTL-246 USB Cable GTL-205...

  • Page 13: Package Contents

    GETTING STARTED Package Contents Check the contents before using the instrument. Opening the box Main unit Power cord x1 (region Contents   (single unit) dependent) Test leads (red x1,  black x1) User manual CD  Safety instruction  sheet...

  • Page 14: Appearance

    GDM-834X Series User Manual Appearance GDM-8342/8341 Front Panel Main DC/AC 0.5A Terminal, Display AMPS Fuse Holder Terminal GDM-8342 50000 Counts Dual Measurement Multimeter INPUT 600V 1000V 0.5A 750V Terminal RANGE POWER DC + AC 500Vpk LOCAL TEMP FUSE T0.5A Hz/P...
  • Page 15 GETTING STARTED This terminal is used for all Input INPUT measurements except for DC/AC Terminal current measurements. 600V INPUT 1000V 0.5A 600V 750V Accepts ground (COM) line in all COM Terminal 1000V measurements. 0.5A 750V 500Vpk FUSE T0.5A The maximum withstand voltage 250V INPUT between this terminal and earth is...
  • Page 16 GDM-834X Series User Manual The top row of measurement keys are used for Measurement basic DMM measurements such as voltage, Keys current, resistance, capacitance and frequency. The bottom row of measurement functions are used for more advanced functions. Each key has a primary and secondary function.
  • Page 17 GETTING STARTED Measures resistance or continuity, Resistance/ depending on the selected mode. Continuity) See page 43 and 48, respectively. Measures dB. See page 65. (SHIFT→ Ω/ ) SHIFT → EXIT Tests diodes or measures Diode/ capacitance, depending on the Capacitance selected mode.
  • Page 18 GDM-834X Series User Manual Lower Measurement keys Measures the Relative value (page REL# 67). Manually sets the reference REL# REL# value for the Relative value (SHIFT→REL) SHIFT → EXIT measurement. Measures the Maximum or the MX/MN MATH Minimum value (page 66).
  • Page 19 GETTING STARTED Enters the configuration menu for MENU USB STO System Settings, Measurement MENU Settings, Temperature measurement settings, I/O settings and USB storage settings. See page 76 for the system menu. Logs measurement data to USB STO USB STO a USB drive. This function (SHIFT→MENU) SHIFT →...

  • Page 20: Display Overview

    GDM-834X Series User Manual The arrow keys are used to Arrow Keys RANGE navigate the menu system and edit values. The Up and Down arrow keys will also manually set the range for the RANGE voltage and current measurements. The Left and Right arrow keys will...
  • Page 21 GETTING STARTED Displays the units for the secondary measurement Secondary function. Measurement Units Displays the secondary measurement function. Secondary Measurement function icons Display status icons for operations/functions that Function Status are not linked to the primary or secondary Icons functions. Displays the results of the primary measurement.

  • Page 22: Rear Panel

    GDM-834X Series User Manual Rear Panel Optional GPIB port (GDM-8342 only) LINE RATING GPIB Power Cord 50 / 60 Hz 15VA MAX. FUSE LINE 100VAC 0.125AT Socket 120VAC 220VAC 0.063AT 240VAC DISCONNECT POWER CORD AND TEST LEADS BEFORE REPLACING FUSE...
  • Page 23 GETTING STARTED Fuse Socket Holds the main fuse: 100/120 VAC: 0.125AT 220/240 VAC: 0.063AT For fuse replacement details, see page 145. Calibration Port CALIBRATION Reserved for calibration purposes. USE ONLY For service technicians only. USB Device Type B USB port. This port is used for remote control.

  • Page 24: Set Up

    GDM-834X Series User Manual Set Up Tilting the Stand From the base of the handle, gently pull the handle out sideways and then rotate it to one of the following positions. Horizontal position Tilt stand position Carry position...
  • Page 25 GETTING STARTED Power Up 1. Ensure the correct line Steps voltage is lined up with the arrow on the fuse holder. If not, see page 145 to set the line voltage and fuse. 2. Connect the power cord to the AC voltage input.
  • Page 26 GDM-834X Series User Manual How to Use the Instrument The following section will introduce to you Background how to access the basic functions on the DMM as well as how to navigate the menu system and edit the parameter values.
  • Page 27 GETTING STARTED The menu system is navigated with the Up, Navigating the Down, Left and Right arrow keys, the Menu System Auto/Enter key and the SHIFT/EXIT key. RANGE Auto Enter SHIFT EXIT RANGE To enter the menu system, press the MENU key.
  • Page 28 GDM-834X Series User Manual When you access a menu or parameter setting, Editing a Setting or Parameter the Up, Down, Left and Right keys can be used again to edit the parameter as well. RANGE Auto Enter RANGE  If a setting or parameter is flashing, it indicates that that particular parameter can be edited.

  • Page 29: Operation

    OPERATION PERATION Basic Measurement Overview .......... 31 Refresh Rate ............... 31 Reading Indicator ............32 Automatic/Manual Triggering ........32 AC/DC Voltage Measurement .......... 33 Select the Voltage Range ........... 34 Voltage Conversion Table .......... 36 Crest Factor Table ............37 AC/DC Current Measurement ..........
  • Page 30 GDM-834X Series User Manual Set the Reference Junction Temperature ....56 Dual Measurement Overview ........... 57 Supported dual measurement modes ...... 57 Using Dual Measurement Mode ....... 58 Advanced Measurement Overview ........62 Supported Advanced Measurement Functions ..62 dBm/dB/W Measurement ..........63 dBm/dB Calculation ..........

  • Page 31: Basic Measurement Overview

    OPERATION Basic Measurement Overview Refresh Rate The refresh rate defines how frequently the Background DMM captures and updates measurement data. A faster refresh rate yields a lower accuracy. A slower refresh rate yields a higher accuracy. Consider these tradeoffs when selecting the refresh rate.

  • Page 32: Reading Indicator

    GDM-834X Series User Manual Reading Indicator Overview 1. The reading indicator next to the 1st display flashes according to the refresh rate setting. Automatic/Manual Triggering By default, the GDM-8342/8341 automatically Overview triggers according to the refresh rate. See the previous page for refresh rate setting details.

  • Page 33: Ac/Dc Voltage Measurement

    OPERATION AC/DC Voltage Measurement The GDM-8342/8341 can measure from 0 to 750VAC or 0 to 1000VDC, however the CATII measurement is only rated up to 600V. 1. Press the DCV or ACV key to measure DC or Set to ACV/DCV AC voltage.

  • Page 34: Select The Voltage Range

    GDM-834X Series User Manual Select the Voltage Range The voltage range can be set automatically or manually. To turn the automatic range selection On/Off, Auto Range press the AUTO key. Press the Up or the Down key to select the Manual Range range.
  • Page 35 OPERATION For example: Dynamic Range Dynamic Range A,B: Input exceeds the dynamic range. C,D: The DCV offset causes the input to exceed the upper dynamic range. E: The DCV offset causes the input to exceed the lower dynamic range. The DC voltage range should be manually selected when all of the following conditions are true: When DCV measurement is used.

  • Page 36: Voltage Conversion Table

    GDM-834X Series User Manual Voltage Conversion Table This table shows the relationship between an AC and DC reading for various waveforms. Waveform Peak to Peak AC (True RMS) 2.828 1.000 0.000 Sine PK-PK 1.414 0.435 0.900 Rectified Sine (full wave) PK-PK 2.000...

  • Page 37: Crest Factor Table

    OPERATION Crest Factor Table Crest factor is the ratio of the peak signal Background amplitude to the RMS value of the signal. It determines the accuracy of AC measurement. If the crest factor is less than 3.0, voltage measurement will not result in error due to dynamic range limitations at full scale.

  • Page 38: Ac/Dc Current Measurement

    GDM-834X Series User Manual AC/DC Current Measurement The GDM-834X series DMMs have two input terminals for current measurement. A 0.5A terminal for current less than 0.5A and a 10A terminal for measurements up to 12A. The units can measure 0 ~ 10A for both AC and DC current.
  • Page 39 OPERATION INPUT 600V 1000V 0.5A 750V 500Vpk FUSE T0.5A 250V Max 0.5A...

  • Page 40: Select The Current Range

    GDM-834X Series User Manual Select the Current Range The current range can be set automatically or manually. To turn the automatic range selection On/Off, Auto Range press the AUTO key. The most appropriate range for the currently used input jack will be automatically selected.
  • Page 41 OPERATION DC currents with AC components cannot be Note accurately measured if the DC+AC component exceed the dynamic range for the selected DC range. Any current exceeding the dynamic range will be clipped at the upper/lower range limit. Under these conditions the range that is chosen with the Auto range function may be too small.
  • Page 42 GDM-834X Series User Manual Maximum DCI Selected DCV Range Dynamic Range Dynamic Range DC 500μA ±600µAmax DC 5mA ±6mAmax DC 50mA ±60mAmax DC 500mA ±600mAmax DC 5A ±6Amax DC 10A ±12Amax...

  • Page 43: Resistance Measurement

    OPERATION Resistance Measurement Set to Ω 1. Press the Ω/ key to activate resistance measurement. Measurement Note: pressing the Ω/ key twice will activate continuity measurement instead. 2. The mode will switch to resistance mode immediately, as shown below. Display Resistance Resistance Measurement...

  • Page 44: Select The Resistance Range

    GDM-834X Series User Manual Select the Resistance Range The resistance range can be set automatically or manually. To turn the automatic range selection On/Off, Auto Range press the AUTO key. Press the Up or the Down key to select the Manual Range range.

  • Page 45: Diode Test

    OPERATION Diode Test The diode test checks the forward bias characteristics of a diode by running a constant forward bias current of approximately 0.83mA through the DUT. 1. Press the key once to activate diode Set to Diode measurement. Measurement Note: pressing the key twice will activate the capacitance measurement instead.

  • Page 46: Capacitance Measurement

    GDM-834X Series User Manual Capacitance Measurement The capacitance measurement function checks the capacitance of a component. 1. Press the key twice to activate Set to capacitance measurement. Capacitance Measurement Note: pressing the key once will activate the diode measurement instead.

  • Page 47: Select The Capacitance Range

    OPERATION Select the Capacitance Range The capacitance range can be set automatically or manually. To turn the automatic range selection On/Off, Auto Range press the AUTO key. Press the Up or the Down key to select the Manual Range range. The AUTO indicator turns Off automatically.

  • Page 48: Continuity Test

    GDM-834X Series User Manual Continuity Test The continuity test checks that the resistance in the DUT is low enough to be considered continuous (of a conductive nature). 1. Press the Ω/ key twice to activate continuity Procedure testing. 2. The mode will switch to continuity testing immediately, as shown below.

  • Page 49: Set Continuity Threshold

    OPERATION Set Continuity Threshold The continuity threshold defines the maximum resistance allowed in the DUT when testing the continuity. 0 to 1000Ω (Default Threshold:10Ω) Range Threshold Resolution 1Ω 1. Press MENU. Procedure 2. Go to the MEAS menu on level 1 3.

  • Page 50: Continuity Beeper Settings

    GDM-834X Series User Manual Continuity Beeper Settings The beeper setting defines how the GDM-8342/8341 notifies the continuity test result to the user. Note: When the Beeper setting is off it will also turn off the keypad tones as well as any error or warning tones.

  • Page 51: Frequency/Period Measurement

    OPERATION Frequency/Period Measurement The GDM-8342/8341 can be used to measure the frequency or period of a signal. Range Frequency 10Hz~1MHz Period 1.0μs ~100ms To measure frequency, press the Hz/P key Procedure once. The frequency will be displayed on the primary screen and the range will be displayed on the secondary display.

  • Page 52: Frequency/Period Settings

    GDM-834X Series User Manual Frequency/Period Settings The input voltage/current range for frequency/period measurements can be set to Auto range or to manual. By default, the voltage/current range is set to Auto for both the period and frequency. Range Voltage 500mV, 5V, 50V, 500V, 750V Current 500μA, 5mA, 50mA, 500mA, 5A, 10A...

  • Page 53: Temperature Measurement

    OPERATION Temperature Measurement The GDM-8342 can measure temperature using a thermocouple. To measure temperature, the DMM accepts a thermocouple input and calculates the temperature from the voltage fluctuation. The thermocouple type and reference junction temperature are also considered. Temperature measurement is only supported on the GDM-8342.

  • Page 54: Set The Temperature Units

    GDM-834X Series User Manual INPUT 600V 1000V 0.5A 750V 500Vpk FUSE T0.5A 250V Set the Temperature Units ˚C, ˚F Range Units 1. Press the MENU key. Procedure 2. Go to TEMP on level 1. 3. Go to UNIT on level 2.

  • Page 55: Select Thermocouple Type

    OPERATION Select Thermocouple Type The GDM-8342 accepts thermocouple inputs and calculates the temperature from the voltage difference of two dissimilar metals. Thermocouple type and reference junction temperature are also considered. Thermocouple Type Measurement Range Resolution type and range -200 to +300˚C 0.1 °C -200 to +300˚C 0.1 °C...

  • Page 56: Set The Reference Junction Temperature

    GDM-834X Series User Manual Set the Reference Junction Temperature When a thermocouple is connected to the DMM, the temperature difference between the thermocouple lead and the DMM input terminal should be taken into account and be cancelled out; otherwise an erroneous temperature might be added. The value of the reference junction temperature should be determined by the user.

  • Page 57: Dual Measurement Overview

    OPERATION Dual Measurement Overview The dual measurement mode allows you to use the 2nd display to show another item, thus viewing two different measurement results at once. When the multimeter is used in dual measurement mode, both displays are updated from either a single measurement or from two separate measurements.

  • Page 58: Using Dual Measurement Mode

    GDM-834X Series User Manual Using Dual Measurement Mode 1. Choose one of the basic measurement functions Procedure from the table above to set the measurement mode for the primary display. For example, press DCV to set the first display to DCV measurement.
  • Page 59 OPERATION After the secondary measurement function has Editing the Measurement been activated, the rate, range and Parameters measurement item can be edited for either the primary or secondary display. Note however, it is more practical to configure the first or second measurement items before activating dual measurement mode.
  • Page 60 GDM-834X Series User Manual The diagrams below describe how to connect Connection the DMM to measure a number of common dual measurement items. Voltage and Frequency/Period measurement INPUT 600V 1000V 0.5A 750V 500Vpk FUSE T0.5A 250V...
  • Page 61 OPERATION Voltage/Frequency/Period and Current Measurement INPUT Load 600V 1000V 0.5A 750V 500Vpk 0~12A FUSE T0.5A 250V 0~0.5A Note: DC Current measurements will be displayed as a negative value as the polarity of the current leads has been reversed. Please take into account the resistance of the test leads and internal resistance of the current connection as it is in series with the test circuit.

  • Page 62: Advanced Measurement Overview

    GDM-834X Series User Manual Advanced Measurement Overview Advanced measurement mainly refers to the type of measurement which uses the result obtained by one of the basic measurements: ACV, DCV, ACI, DCI, Resistance, Diode/Continuity, Frequency/Period, and Temperature*. Supported Advanced Measurement Functions The following table lists all the advanced measurement functions and which of the basic measurement functions that they support.

  • Page 63: Dbm/Db/W Measurement

    OPERATION dBm/dB/W Measurement dBm/dB Calculation Using the ACV or DCV measurement results, Overview the DMM calculates the dB or dBm value based on a reference resistance value in the following way: dBm= 10 x log (1000 x Vreading / Rref) dB= dBm –...
  • Page 64 GDM-834X Series User Manual Display Reference measurement resistance To set the reference resistance, use the Up and Setting the Reference Down arrow keys. Resistance The selectable reference resistances are shown below. Selectable reference resistances 1000 1200 8000 When the reference resistance is less than 50Ω, View the result in it is possible to calculate the power (in watts).

  • Page 65: Measure Db

    OPERATION Measure dB dB is defined as [dBm−dBmref]. When the dB measurement is activated, the DMM calculates the dBm using the reading at the first moment and stores it as dBmref. 1. Select ACV or DCV measurement. See page 33. Procedure 2.

  • Page 66: Max/Min Measurement

    GDM-834X Series User Manual Max/Min Measurement Maximum and Minimum measurement function stores the highest (maximum) or lowest (minimum) reading and shows it on the 1st display when the 2ND key is pressed. The Max/Min function can be used with the...

  • Page 67: Relative Measurement

    OPERATION Relative Measurement Relative measurement stores a value, typically the data at that instant, as the reference. The measurement following the reference is displayed as the delta between the reference. The reference value will be cleared upon exit. The relative function can be used with the Applicable measurements following basic measurement functions:...
  • Page 68 GDM-834X Series User Manual 1. To manually set the relative reference value, Manually Set the Relative press SHIFT → REL. Reference Value The REL value is displayed on the screen at full scale. 2. Use the Left and Right arrow keys to navigate to the digit to be edited or to select the decimal point.

  • Page 69: Hold Measurement

    OPERATION Hold Measurement The Hold Measurement function retains the current measurement data and updates it only when it exceeds the set threshold (as a percentage of the retained value). The hold function can be used with the Applicable measurements following basic measurement functions: ACV, DCV, ACI, DCI, Ω, Hz/P, TEMP 1.

  • Page 70: Compare Measurement

    GDM-834X Series User Manual Compare Measurement Compare measurement checks to see if the measurement data stays between a specified upper (high) and lower (low) limit. The compare function can be used with the Applicable following basic measurement functions: measurements ACV, DCV, ACI, DCI, Ω, Hz/P, TEMP, 1.
  • Page 71 OPERATION the high and low limits, PASS will be displayed on the secondary display, If the reading is below the low limit, LOW will be displayed. If the reading is above the high limit, HIGH will be displayed. Display Measurement Compare reading result...

  • Page 72: Math Measurement

    GDM-834X Series User Manual Math Measurement Math Measurement Overview Math measurement runs three types of mathematical operations, MX+B, 1/X and Percentage based on the other measurement results. The math function can be used with the Applicable Measurements following basic measurement functions: ACV, DCV, ACI, DCI, Ω, Hz/P, TEMP...

  • Page 73: Measure 1/X

    OPERATION decimal point. 3. Press Enter to confirm the M factor settings and to automatically move onto the B offset setting. 4. Edit the B offset in the same fashion as the M factor was edited. 5. Press Enter to confirm the B offset setting and to begin the MX+B measurement.

  • Page 74: Measure Percentage

    GDM-834X Series User Manual 3. Press Enter to activate the 1/X math function. The results begin immediately. Display 1/X math measurement indicator AUTO MAT H Press the SHIFT → MX/MN to deactivate the Deactivate Math Measurement MATH function, or simply activate another measurement function.
  • Page 75 OPERATION 4. Press Enter to confirm the REF% setting and to begin the Percentage measurement. Display Calculated percentage % function meausurement indicator AUTO MAT H Press SHIFT → MX/MN to deactivate the Deactivate Math MATH function, or simply activate another Measurement measurement function.

  • Page 76: System/Display Configuration

    GDM-834X Series User Manual YSTEM/DISPLAY CONFIGURATION View Serial Number ............77 View Version Number ............77 Brightness Settings ............78 Input Resistance Settings ..........79 Frequency/Period Input Jack Settings ......80 Compatibility Settings ............. 81 Changing the Compatibility Setting ......81...

  • Page 77: View Serial Number

    5. Press Exit to exit from the version menu. Display Firmware updates can only be performed by a GW Note Instek service technician. For details, please contact the GW Instek Service Center or visit the GW Instek website at www.gwinstek.com.

  • Page 78: Brightness Settings

    GDM-834X Series User Manual Brightness Settings The display has 5 settable brightness levels. Range Brightness 1 (dim) ~ 5 (bright) 1. Press the MENU key. Procedure 2. Go to SYSTEM on level 1. 3. Go to LIGHT on level 2.

  • Page 79: Input Resistance Settings

    SYSTEM/DISPLAY CONFIGURATION Input Resistance Settings The 500mV and 5V DC voltage ranges can be set to an input resistance of 10MΩ or 10GΩ. This setting is only applicable for DC voltage. Range Input resistance 10MΩ, 10GΩ Default 10MΩ 1. Press the MENU key. Procedure 2.

  • Page 80: Frequency/Period Input Jack Settings

    GDM-834X Series User Manual Frequency/Period Input Jack Settings The INJACK settings set which input terminal is used for frequency or period measurements. Range Injack VOLT, 500mA, 10A Default VOLT 1. Press the MENU key. Procedure 2. Go to MEAS on level 1.

  • Page 81: Compatibility Settings

    SYSTEM/DISPLAY CONFIGURATION Compatibility Settings Changing the Compatibility Setting The GDM-8341/8342 can be set to a special compatibility mode that will allow the unit to emulate the SCPI command syntax of the GDM-8246 when in remote control mode. For example, this feature can allow programs that were originally written for the GDM-8246 to run on the GDM-8342/8341 with little modification.

  • Page 82: Restore Factory Default Settings

    GDM-834X Series User Manual Restore Factory Default Settings The factory default settings can be restored at anytime from the System menu. Please see the Appendix on page 144 for a list of the factory default settings. Range Factory DEF YES, NO 1.

  • Page 83: Usb Store

    Please note that this function is not available for the GDM-8341, however similar functionality is possible on a PC via remote control using the Excel Add-In, GDM-834x Excel Addins. See the GDM-834X Series Excel Add-In manual for details. USB Store Overview ............84 Supported USB Sticks: ..........84 CSV Format ..............

  • Page 84: Usb Store Overview

    GDM-834X Series User Manual USB Store Overview The GDM-8342 is able to store measurement results to a USB stick. The USB storage function also has comprehensive save options that allow you to create a save file name, allow you to save up to a...

  • Page 85: Filename Format

    USB STORE 1st Unit The units for the reading on the primary display. 2nd Value The reading on the secondary display. 2nd Unit The units for the reading on the secondary display. Count Counts the number of readings each time the measurement is started.

  • Page 86: Operator Mode

    GDM-834X Series User Manual example, if 102000 counts are logged, 3 files will be created: GW000\GW000-00.CSV (counts 1~50000), GW000\GW000-01.CSV (counts 50001~100000), and GW000\GW000-02.CSV (counts 100001 ~ 102000). *Please note that automatic file name generation Note only occurs if the FILE setting is set to NEW FILE.
  • Page 87 USB STORE Users can make detailed settings by themselves Advance Mode in this mode. Advance mode is more flexible, so it is comparatively more complex and only recommended for advanced users. The following settings are available in this mode: “Existing File”, “File Name”, “Count”, “Time Mode”, “Time Setup”...

  • Page 88: Long Record Mode

    GDM-834X Series User Manual Long Record Mode If users need long-term data records, the Long Overview Record Mode can be used to log test data for a long period of time. In this mode, the Rate is set by the system to the slow rate and the refresh...

  • Page 89: View The Store Function Status

    USB STORE Display Operator mode Operator mode setting menu indicator View the Store Function Status The USB Status menu can be used to check the Overview status of the USB Store function. This function will allow you to see if the save operation has completed or check the elapsed time or the current reading count.
  • Page 90 GDM-834X Series User Manual S-FILE Shows the filename of the first log file of the present record. E-FILE Shows the filename of the last log file of the present record. 1. Insert a USB stick and start the USB Store Procedure function as described on page 96 or 97.

  • Page 91: Set The Starting File Name (Available Only In Advance Mode )

    USB STORE Set the Starting File Name (Available only in Advance Mode ) The GDM-8342 will allow you to set the value Overview of the starting file name instead of the default GW000-XX.CSV. Note that the suffix, XX, cannot be edited. This setting will appear automatically after the USB Store function has been started in Advance mode, see page 97 for details.

  • Page 92: Save To An Existing File (Available Only In Advance Mode)

    GDM-834X Series User Manual until the USB store function is turned off. This setting will appear automatically after the USB Store function has been started in Advance mode, see page 97 for details. When set to CONTINU, the actual number of...

  • Page 93: Time Mode (Available Only In Advance Mode)

    USB STORE Time Mode (Available only in Advance Mode) Range TIME CURRENT, RESTART Default RESTART The Time Mode setting designates how the Overview readings are time-stamped when saved to a CSV file. The CURRENT setting time stamps each reading from the time when the DMM was first turned on.
  • Page 94 GDM-834X Series User Manual The timer setting sets the “current” timer time Overview that is used to time stamp readings when saving to USB. By default the timer time is the elapsed time from when the unit was turned If the timer time ticks over 23:59:59, the timer will revert back to 00:00:00 and the time stamp will include a “day”...

  • Page 95: Date

    USB STORE Date Range Date 13.03.01 ~ 99:12:31 (Year:Month:Day) Default 13.03.01 The date setting sets the date-stamp for any Overview CSV files that are saved. The GDM-8342 has flash memory to store the date Note settings. The date that is set by the user will be restored each time the power is turned on.

  • Page 96: Save To Usb

    GDM-834X Series User Manual Save to USB The USB STO option allows the GDM-8342 to Overview store each measurement reading to a USB stick. The USB Store function varies according to whether the operator mode is set to Simple or Advance.

  • Page 97: Save To Usb (Advance Mode)

    USB STORE 5. The USB stick can now be removed or another save operation can be performed. Do not remove the USB stick while the DMM is WARNING saving to the USB drive. The USB STO icon will flash at a faster rate (~5 Note times/second) if there is no more space left on the USB stick or if the automatically-incremented...
  • Page 98 GDM-834X Series User Manual FILE (Existing File, see page 92) NAME (File Name, see page 91) COUNT (Count, see page 91) TMODE (Time Mode, see page 93) TIMER (Time Setup, see page 93) DATE (Date Setup, see page 95) 5. After the DATE option is set, the DMM will begin logging data.

  • Page 99: Note About Deleting Files Or Directories On The Usb Stick

    USB STORE Note About Deleting Files or Directories on the USB Stick If you find the need to delete files or directories Note that have already been saved to the USB stick, please adhere to the following suggestions to prevent unexpected results when logging data. As the system will look for the last GWXXX Overview directory and last log file (GWXXX-XX.CSV) in...
  • Page 100 GDM-834X Series User Manual GW000-02.CSV Recommended: Deleting only the last files or all the files from a directory: GW000-00.CSV, GW000-01.CSV, GW000- 02.CSV GW000-00.CSV, GW000-01.CSV, GW000- 02.CSV Not recommended: Deleting any file before the last file. GW000-00.CSV, GW000-01.CSV, GW000- 02.CSV...

  • Page 101: Remote Control

    REMOTE CONTROL EMOTE CONTROL This chapter describes basic configuration of IEEE488.2 based remote control. For a command list, refer to the Command Overview chapter on page 106. Configure Remote Control Interface ........ 102 USB Interface ............102 GPIB Interface ............103 Return to Local Control ..........

  • Page 102: Configure Remote Control Interface

    GDM-834X Series User Manual Configure Remote Control Interface USB Interface The USB device port on the rear panel is used for remote control. The USB port on the DMM will appear as a virtual COM port to a connected PC. Any terminal program that can communicate via a serial port can be used for remote control.

  • Page 103: Gpib Interface

    REMOTE CONTROL 6. Press Enter to confirm the baud rate settings. 7. Press EXIT to exit from the USB menu. Display Baud rate Baud menu setting indicator GPIB Interface In addition to the USB port, an optional GPIB port (GDM-8342 only) on the rear panel can be used for remote control.
  • Page 104 GDM-834X Series User Manual Display GPIB address GPIB menu setting indicator Maximum 15 devices GPIB Constraints  Note together, at least 2/3 of all devices turned on. Cable length should be less then 20m with a maximum of 2m between each device.

  • Page 105: Return To Local Control

    REMOTE CONTROL Return to Local Control When the unit is in remote control mode, the Background RMT icon above the main display can be seen. When this icon is not displayed, it indicates that the unit is in local control mode. 1.

  • Page 106: Command Overview

    GDM-834X Series User Manual OMMAND OVERVIEW The Command overview chapter lists all programming commands in functional order as well as alphabetical order. The command syntax section shows you the basic syntax rules you have to apply when using commands. Command Syntax Partial compatibility IEEE488.2...
  • Page 107 COMMAND OVERVIEW There are a number of different instrument Command types commands and queries. A command sends instructions or data to the unit and a query receives data or status information from the unit. Command types A single command Simple with/without a parameter CONFigure:VOLTage:DC Example...
  • Page 108 GDM-834X Series User Manual Short form CONF:DIOD conf:diod Commands that contain square brackets Square Brackets indicate that the contents are optional. The function of the command is the same with or without the square bracketed items, as shown below. For example, for the query:...
  • Page 109 COMMAND OVERVIEW For commands, this will set the [MIN] (Optional setting to the lowest value. This parameter) parameter can be used in place of any numerical parameter where indicated. For queries, it will return the lowest possible value allowed for the particular setting.
  • Page 110 GDM-834X Series User Manual Return CR+ LF Message Message EOL or ; Command Separator Separator (semicolon)

  • Page 111: Command List

    COMMAND OVERVIEW Command List Configure Commands (Display 1) CONFigure:VOLTage:DC........116 CONFigure:VOLTage:AC ........116 CONFigure:VOLTage:DCAC ........ 116 CONFigure:CURRent:DC ........116 CONFigure:CURRent:AC ........117 CONFigure:CURRent:DCAC ........ 117 CONFigure:RESistance ........117 CONFigure:FREQuency ........117 CONFigure:PERiod ..........118 CONFigure:CONTinuity ........118 CONFigure:DIODe ..........118 CONFigure:TEMPerature:TCOuple .....
  • Page 112 GDM-834X Series User Manual Measure Commands MEASure:VOLTage:DC? ........123 MEASure:VOLTage:AC? ........123 MEASure:VOLTage:DCAC? ......... 123 MEASure:CURRent:DC? ........123 MEASure:CURRent:AC? ........124 MEASure:CURRent:DCAC? ........124 MEASure:RESistance? ......... 124 MEASure:FREQuency? ........124 MEASure:PERiod? ..........124 MEASure:CONTinuity? ........125 MEASure:DIODe? ..........125 MEASure:TEMPerature:TCOuple? ...... 125 MEASure2:VOLTage:DC? ........
  • Page 113 COMMAND OVERVIEW Calculate Commands CALCulate:FUNCtion ........... 130 CALCulate:FUNCtion? ......... 130 CALCulate:STATe ..........130 CALCulate:STATe? ..........130 CALCulate:MINimum? ........130 CALCulate:MAXimum? ........130 CALCulate:HOLD:REFerence ......131 CALCulate:HOLD:REFerence? ......131 CALCulate:REL:REFerence ........131 CALCulate:REL:REFerence? ......... 131 CALCulate:LIMit:LOWer ........131 CALCulate:LIMit:LOWer? ........131 CALCulate:LIMit:UPPer ........
  • Page 114 GDM-834X Series User Manual System Commands SYSTem:BEEPer:STATe ........136 SYSTem:BEEPer:STATe? ........136 SYSTem:BEEPer:ERRor ........136 SYSTem:BEEPer:ERRor? ........136 SYSTem:ERRor? ........... 136 SYSTem:VERSion? ..........136 SYSTem:DISPlay ..........137 SYSTem:DISPlay? ..........137 SYSTem:SERial? ........... 137 SYSTem:SCPi:MODE ........... 137 SYSTem:SCPi:MODE? ......... 137 INPut:IMPedance:AUTO ........137 INPut:IMPedance:AUTO? ........
  • Page 115 COMMAND OVERVIEW *STB? ..............141 *TRG ..............141...

  • Page 116: Configure Commands (Display 1)

    GDM-834X Series User Manual CONFigure Commands CONFigure:VOLTage:DC Sets measurement to DC Voltage on the first display and specifies the range. Parameter: [None] | [Range(<NRf> | MIN | MAX | DEF)] Example: CONF:VOLT:DC 5 Sets the voltage range to 5 volts.

  • Page 117: Configure:current:ac

    COMMAND OVERVIEW CONFigure:CURRent:AC Sets measurement to AC Current on the first display and specifies range. Parameter: [None] | [Range(<NRf> | MIN | MAX | DEF)] Example: CONF:CURR:AC 50e-2 Sets the measurement mode to ACI with a 500mA range. CONFigure:CURRent:DCAC Sets measurement to DC+AC Current on the first display and specifies range.

  • Page 118: Configure:period

    GDM-834X Series User Manual CONFigure:PERiod Sets measurement to Period on the first display and specifies the range. Parameter: [None] | [Range(<NRf> | MIN | MAX | DEF)] Example: CONF:PER Sets the DMM to period measurement using the previous range. CONFigure:CONTinuity Sets measurement to Continuity on the first display.

  • Page 119: Configure:range

    COMMAND OVERVIEW CONFigure:RANGe? Returns the current range on the first display. Return Parameter: DCV: 0 .5(500mV), 5(5V), 50(50V), 500(500V), 1000(1000V) ACV: 0.5(500mV), 5(5V), 50(50V), 500(500V), 750(750V) ACI: 0.0005(500μA), 0.005 (5mA), 0.05(50mA), 0.5(500mA), 5(5A), 10(10A) DCI: 0.0005(500μA), 0.005 (5mA), 0.05(50mA), 0.5(500mA), 5(5A), 10(10A) RES: 50E+1(500Ω) 50E+2(5kΩ), 50E+3(50kΩ), 50E+4 (500kΩ), 50E+5(5MΩ), 50E+6(50MΩ)

  • Page 120: Configure2:Voltage:ac

    GDM-834X Series User Manual CONFigure2:VOLTage:AC Sets measurement to AC Voltage on the second display and specifies the range. Parameter: [None] | [Range(<NRf> | MIN | MAX | DEF)] Example: CONF2:VOLT:AC Sets the measurement mode to AC voltage. CONFigure2:CURRent:DC Sets measurement to DC Current on the second display and specifies the range.

  • Page 121: Configure2:Frequency

    COMMAND OVERVIEW CONFigure2:FREQuency Sets measurement to Frequency on the second display and specifies the range. Parameter: [None] | [Range(<NRf> | MIN | MAX | DEF)] Example: CONF2:FREQ MAX Sets the frequency measurement range to max on the second display. CONFigure2:PERiod Sets measurement to Period on the second display and specifies the range.

  • Page 122: Configure2:Range

    GDM-834X Series User Manual CONFigure2:RANGe? Returns the range of the current function on the second display. Return parameter: DCV: 0 .5(500mV), 5(5V), 50(50V), 500(500V), 1000(1000V) ACV: 0.5(500mV), 5(5V), 50(50V), 500(500V), 750(750V) ACI: 0.0005(500μA), 0.005 (5mA), 0.05(50mA), 0.5(500mA), 5(5A), 10(10A) DCI: 0.0005(500μA), 0.005 (5mA), 0.05(50mA), 0.5(500mA), 5(5A), 10(10A) RES: 50E+1(500Ω) 50E+2(5kΩ), 50E+3(50kΩ), 50E+4 (500kΩ),...

  • Page 123: Measure Commands

    COMMAND OVERVIEW Measure Commands MEASure:VOLTage:DC? Returns the DC voltage measurement on the first display. Parameter: [None] | [Range(<NRf> | MIN | MAX | DEF)] Example: MEAS:VOLT:DC? >+0.488E-4 Returns the DC voltage measurement as 0.0488 mV. MEASure:VOLTage:AC? Returns the AC voltage measurement on the first display. Parameter: [None] | [Range(<NRf>...

  • Page 124: Measure:current:ac

    GDM-834X Series User Manual MEASure:CURRent:AC? Returns the AC current measurement on the first display. Parameter: [None] | [Range(<NRf> | MIN | MAX | DEF)] Example: MEAS:CURR:AC? > +0.387E-2 Returns the AC current measurement as 3.87mA. MEASure:CURRent:DCAC? Returns the DC+AC current measurement on the first display.

  • Page 125: Measure:continuity

    COMMAND OVERVIEW MEASure:CONTinuity? Returns the continuity measurement on the first display. Example: MEAS:CONT? Returns the continuity. MEASure:DIODe? Returns the diode measurement on the first display. Example: MEAS:DIOD? Returns the diode measurement. MEASure:TEMPerature:TCOuple? Returns the temperature for the selected thermocouple type on the first display.

  • Page 126: Measure2:Current:dc

    GDM-834X Series User Manual MEASure2:CURRent:DC? Returns the DC current measurement on the second display. Parameter: [None] | [Range(<NRf> | MIN | MAX | DEF)] Example: MEAS2:CURR:DC? >+0.234E-4 Returns the DC current measurement as 0.0234 mA. MEASure2:CURRent:AC? Returns the AC current measurement on the second display.

  • Page 127: Sense Commands

    COMMAND OVERVIEW SENSe Commands [SENSe:]TEMPerature:TCOuple:TYPE Sets thermocouple type. Parameter: Type(J | K | T) Example: SENS:TEMP:TCO:TYPE J Sets the thermocouple to type J. [SENSe:]TEMPerature:TCOuple:TYPE? Returns the thermocouple type. Return parameter: J, K, T [SENSe:]TEMPerature:RJUNction:SIMulated Set temperature simulation value. Parameter: <NRf>(0.00 ~ 50.00) Example: SENS:TEMP:RJUN:SIM 25.00 Sets the thermocouple junction temperature to 25˚C.

  • Page 128: [Sense:]Frequency:inputjack

    GDM-834X Series User Manual [SENSe:]FREQuency:INPutjack Assigns an input terminal for the frequency function. Parameter: (0|1|2) 0=volt, 1=500mA, 2=10A Example: SENS:FREQ:INP 0 Sets the input jack to the Volt input terminal. [SENSe:]FREQuency:INPutjack? Returns the assigned input terminal used for the frequency function.

  • Page 129: [Sense:]Unit

    COMMAND OVERVIEW [SENSe:]UNIT Sets the temperature unit. Parameter: C|F Example: SENS:UNIT C Sets the temperature unit to ˚C. [SENSe:]UNIT? Returns the temperature unit. [SENSe:]FUNCtion[1/2] Sets the function for the first or second display. Parameter: (display1):"VOLT[:DC]", "VOLT:AC", “VOLT:DCAC”, "CURR[:DC]", "CURR:AC", “CURR:DCAC”, "RES", "FREQ", "PER", "TEMP:TCO", "DIOD", "CONT", “CAP”...

  • Page 130: Calculate Commands

    GDM-834X Series User Manual CALCulate Commands CALCulate:FUNCtion Sets the Advanced function. Parameter: OFF | MIN | MAX | HOLD | REL | COMP | DB | DBM | MXB | INV | REF Example: CALC:FUNC REL Sets the Advanced function to REL (relative) CALCulate:FUNCtion? Returns the current Advanced function.

  • Page 131: Calculate:hold:reference

    COMMAND OVERVIEW CALCulate:HOLD:REFerence Sets the percentage threshold for the Hold function. Parameter: <NRf> (0.01, 0.1, 1, 10) Example: CALC:HOLD:REF 10 Sets the hold percentage to 10%. CALCulate:HOLD:REFerence? Returns the percentage threshold from the Hold function. CALCulate:REL:REFerence Sets the reference value for the relative function. Parameter: <NRf>...

  • Page 132: Calculate:limit:upper

    GDM-834X Series User Manual CALCulate:LIMit:UPPer? Returns the upper limit of the compare function. CALCulate:DB:REFerence Sets the reference value for the dB function. Parameter: <NRf> | MIN | MAX Example: CALC:DB:REF MAX Sets the reference voltage for dB measurements to the maximum allowed.

  • Page 133: Calculate:math:mbfactor

    COMMAND OVERVIEW CALCulate:MATH:MBFactor Sets the offset factor B for math measurements. Parameter: <NRf> | MIN | MAX Example: CALC:MATH:MBF MIN Sets the offset factor B to the minimum allowed value. CALCulate:MATH:MBFactor? Returns the offset factor B used in the math measurement. CALCulate:MATH:PERCent Sets the reference value for the Percent function.

  • Page 134: Trigger Commands

    GDM-834X Series User Manual TRIGger Commands READ? Returns 1 and 2 display value. VAL1? Returns the 1 display reading Example: SAMP:COUN 100 VAL1? >+0.333E-4,V DC >+0.389E-4,V DC > etc, for 100 counts. Queries 100 counts of stored samples from the 1 display.

  • Page 135: Trigger:auto

    COMMAND OVERVIEW TRIGger:AUTO Turns Trigger Auto mode on/off. Parameters: ON | OFF Example: TRIG:AUTO OFF Turns the Trigger Auto mode off. TRIGger:AUTO? Returns the Trigger Auto mode. Return parameter: 0|1, 0=OFF, 1=ON SAMPle:COUNt Sets the number of samples. Parameter: <NR1>(1 ~ 9999) | MIN | MAX Example: SAMP:COUN 10 Sets the number of samples to 10.

  • Page 136: System Commands

    GDM-834X Series User Manual SYSTem Related Commands SYSTem:BEEPer:STATe Selects the beeper mode; no beep, beep on fail and beep on pass. Parameter: <NR1>(0 | 1 | 2) 0=no beep, 2=fail, 1=pass Example: SYST:BEEP:STAT 0 Turns the beeper off. SYSTem:BEEPer:STATe? Returns the beeper mode.

  • Page 137: System:display

    COMMAND OVERVIEW SYSTem:DISPlay Turns the Display on/off. Parameter: ON | OFF Example: SYST:DISP ON Turns the display on. SYSTem:DISPlay? Returns the status of the display Return parameter: 0|1, 0=OFF, 1=ON SYSTem:SERial? Returns the serial number (eight characters/numbers) SYSTem:SCPi:MODE Sets the SCPI mode. Parameter: NORM| COMP (NORM=Normal, COMP= Compatible to GDM8246) Example: SYST:SCP:MODE NORM...

  • Page 138: Status Commands

    GDM-834X Series User Manual STATus Report Commands STATus:QUEStionable:ENABle Set bits in the Questionable Data Enable register. STATus:QUEStionable:ENABle? Returns the contents of the Questionable Data Enable register. STATus:QUEStionable:EVENt? Returns the contents of the Questionable Data Event register. STATus:PRESet Clears the Questionable Data Enable register.

  • Page 139: System:rwlock

    COMMAND OVERVIEW SYSTem:RWLock Enables remote control and disables local control (front panel control). Once this command has been issued, pressing the 2ND or local buttons will not return the user to local control. The only way to return local mode is to issue the SYSTem:LOCal command.

  • Page 140: Idn

    GDM-834X Series User Manual *IDN? Returns the manufacturer, model No., serial number and system version number. Example: *IDN? >GWInstek,GDM8342,00000000,1.0 *OPC? “1” is placed in the output queue when all the pending operations are completed. *OPC Sets operation complete bit (bit0) in SERS (Standard Event Status Register) when all pending operations are completed.
  • Page 141 COMMAND OVERVIEW *STB? Returns the SBR (Status Byte Register) contents. Example:*STB? >81 Returns the contents of the SBR as 01010001. *TRG Manually triggers the DMM. For the following command sets, please refer to the status system diagram on page 148. STAT: QUES:EVEN? STAT: QUES: ENAB STAT: QUES: ENAB?

  • Page 142: Faq

    GDM-834X Series User Manual The DMM performance doesn’t match the specifications. Make sure the device is powered On for at least 30 minutes, within 18~28˚C. This is necessary to stabilize the unit to match the specifications. The measured voltage does not match the expected value.

  • Page 143: Appendix

    APPENDIX PPENDIX System Menu Tree LEVEL 1 SYSTEM MEAS TEMP USBSTO GDM-8342 only LEVEL 2 GPIB 115200 57600 38400 19200 9600 GDM-8342 only LEVEL 2 SENSOR UNIT TYPE J 23.00 TYPE K TYPE T GDM-8342 only LEVEL 2 CONT INJACK INPUT R 0010 VOLT 500mA...

  • Page 144: Factory Default Settings

    GDM-834X Series User Manual Factory Default Settings Measurement Item Range AUTO Rate SYSTEM Menu BEEP: Pass VER: N/A LIGHT: 3 S/N: N/A LANG: NORM FACTORY: NO MEAS Menu CONT: 0010Ω INJACK: VOLT INPUT R: 10M TEMP Menu SENSOR: TYPE J SIM: 23.00...

  • Page 145: Replacing The Ac Source Fuse

    APPENDIX Replacing the AC Source Fuse Rating Size Fuse Ratings Type 100VAC, 120VAC 5mm X 20mm 0.125AT 220VAC, 240VAC 5mm X 20mm 0.063AT Only replace the fuse with a fuse of the correct type Note and rating. 1. Turn the DMM off and take out the power cord. Steps 2.

  • Page 146: Replacing The Input Fuse

    GDM-834X Series User Manual Replacing the Input Fuse Rating Size Fuse Rating Type 0.5A 250V 6.3mm X 32mm T0.5A Only replace the fuse with a fuse of the correct type Note and rating. 1. Turn the DMM off. Steps 2. Press the fuse holder with your finger and turn anticlockwise.
  • Page 147 APPENDIX 3. Replace the fuse at the end of the holder with the correct type and rating. 4. Push the fuse holder back into the panel and turn clockwise when the fuse holder is level with the front panel.

  • Page 148: Status System

    GDM-834X Series User Manual Status system The diagram below is a description of the status system For the following command sets, please refer to the diagram above. STAT: QUES: EVEN? STAT: QUES: ENAB STAT: QUES: ENAB? *ESR? *ESE *ESE? *STB?

  • Page 149: Specifications

    APPENDIX Specifications The specifications apply when the DMM is warmed up for at least 30 minutes and operates in slow rate. Below are the basic conditions required to operate the DMM within specifications: Calibration: Yearly  Operating Temperature Specification: 18~28˚C (64.4~82.4˚F) ...
  • Page 150 GDM-834X Series User Manual DC Voltage Accuracy Input Range Resolution Full Scale (1 year 23˚C ±5˚C) Resistance 10MΩ or 500mV 510.00 μ >10GΩ 10MΩ or μ 5.1000 >10GΩ 0.02%+4 11.1MΩ 51.000 10.1MΩ 500V 10mV 510.00 10MΩ 1000V 100mV 1020.0 * When the input value exceeds the full scale of the selected range, the display will show -OL- (over load) on the display.
  • Page 151 APPENDIX AC Voltage, ACV+DCV (AC Coupled) Full Accuracy (1 year 23˚C ±5˚C) [1] Range Resolution Scale 30-50Hz 50-10kHz 10K-30kHz 30K-100kHz 500mV 510.00 μ 1.00%+40 0.50%+40 2.00%+60 3.00%+120 5.1000 μ 1.00%+20 0.35%+15 1.00%+20 3.00%+50 51.000 1.00%+20 0.35%+15 1.00%+20 3.00%+50 500V 10mV 510.00 0.5%+15 1.00%+20[2] 3.00%+50[2]...
  • Page 152 GDM-834X Series User Manual Resistance Accuracy (1 year 23˚C Resistance Resolution Full Scale Test Current ±5˚C)[2] 500Ω 10mΩ 510.00 0.83mA 0.1%+5 [1] 5kΩ 100mΩ 5.1000 0.83mA 0.1%+3 [1] 50kΩ 1Ω 51.000 μ 0.1%+3 500kΩ 10Ω 510.00 0.1%+3 μ 5MΩ 100Ω...
  • Page 153 APPENDIX Capacitance Accuracy Range Resolution Full Scale Test Current (1 year 23˚C ±5˚C) [1] 5nF: 0.5~1nF [2] 2.0%+20 0.001nF 5.100 μ 5nF: 1~5nF [2] 2.0%+10 50nF: 5~10nF [2] 2.0%+30 0.01nF 51.00 μ 50nF: 10~50nF [2] 2.0%+10 500nF 0.1nF 510.0 μ μ...
  • Page 154 GDM-834X Series User Manual Temperature Specifications Measurement Accuracy (1 year Sensor Type Range Resolution 23˚C ±5˚C) Thermocouple -200 ~ +300°C 0.1°C 2 °C * Note: The temperature specifications do not include sensor error. * Note: This feature is not supported on the GDM-8341.

  • Page 155: Dimensions

    APPENDIX Dimensions GDM-8342/GDM-8341 GDM-8342 50000 Counts Dual Measurement Multimeter INPUT 600V 1000V 0.5A 750V POWER DC + AC RANGE LOCAL 500Vpk TEMP FUSE T0.5A Hz/P 250V Auto REL# MATH COMP INT/EXT USB STO Enter SHIFT MX/MN HOLD TRIG MENU EXIT RANGE...

  • Page 156: Declaration Of Conformity

    GDM-834X Series User Manual Declaration of Conformity GOOD WILL INSTRUMENT CO., LTD. No. 7-1, Jhongsing Rd, Tucheng Dist., New Taipei City 236, Taiwan GOOD WILL INSTRUMENT (SUZHOU) CO., LTD. No. 69 Lushan Road, Suzhou New District Jiangsu, China. declare that the below mentioned product...

  • Page 157: Index

    INDEX NDEX Accessories ......... 12 Current Advanced measurement range ..........40 setting ..........38 compare .......... 70 Declaration of conformity ..156 ..........65 dBm/dB calculation ..... 63 Diode dBm/W .......... 63 setting ..........45 hold ..........69 Display overview ....... 20 Math Disposal instructions ....
  • Page 158 GDM-834X Series User Manual Rear panel thermocouple type ....... 55 units ..........54 overview ........22 Tilt stand ........24 Refresh rate ........ 31 Triggering ........32 Remote control ......101 UK power cord ......9 Command list ......111 Command syntax .......

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