GW Instek GDM-8352 User Manual
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GW Instek GDM-8352 User Manual

Dual measurement multimeter
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Dual Measurement Multimeter
GDM-8352
USER MANUAL
GW INSTEK PART NO. 82DM-83520E01
ISO-9001 CERTIFIED MANUFACTURER

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  • Page 1 Dual Measurement Multimeter GDM-8352 USER MANUAL GW INSTEK PART NO. 82DM-83520E01 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 ..........13 Set Up ............23 OPERATION ..............28 Basic Measurement Overview ....30 AC/DC Voltage Measurement ....32 AC/DC Current Measurement ....36 Resistance Measurement ......
  • Page 4 GDM-8352 User Manual Input Impedance Settings ......78 Frequency/Period Input Jack Settings ..79 Digital Filter ..........80 Restore Factory Default Settings ....83 Trigger ............84 DIGITAL I/O ..............86 Digital I/O Overview ......... 87 REMOTE CONTROL ............91 Configure Remote Control Interface ..

  • 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  mains power cord from the socket. (Note) EN 61010-1:2010 specifies the measurement categories and their requirements as follows. The GDM-8352 falls under category II 600V.  Measurement category IV is for measurement performed at the source of low-voltage installation.
  • 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-8352 User Manual (Note) EN 61010-1:2010 specifies the pollution degrees and their requirements as follows. The GDM-8352 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-8352 User Manual ETTING STARTED This chapter describes the GDM-8352 multimeter in a nutshell, including accessories, package contents, its main features and front / rear panel introduction. Characteristics ..............11 Accessories ..............12 Appearance ..............13 GDM-8352 Front Panel ..........13 Display Overview ............

  • Page 11: Getting Started

    GETTING STARTED Characteristics The GDM-8352 is a portable, dual-display digital multimeter suitable for a wide range of applications, such as production testing, research, and field verification. DCV accuracy: 0.012% Performance  High current range: 10A  High Voltage range: 1000V ...

  • Page 12: Accessories

    GDM-8352 User Manual Accessories Standard Part number Description Accessories 82DM-83520E x1 CD-ROM (User Manual, Software, Driver) 82DM-83521M x1 Safety Instruction Sheet GTL-207 Test leads Optional Part number Description Accessories GTL-246 USB Cable, USB 2.0, A-B type, 1200mm GTL-205 Temperature Probe Adapter with...

  • Page 13: Appearance

    GETTING STARTED Appearance GDM-8352 Front Panel Power Switch Sense LO Terminal Sense HI Terminal Terminal GDM-8352 SENSE INPUT 5 ½ Digit Dual Measurement Multimeter W 4W Main Display 1000V 200Vpk 750V POWER DC + AC RANGE Terminal 500Vpk LOCAL TEMP...
  • Page 14 SENSE INPUT W 4W GDM-8352 User Manual Accepts ground (COM) line in all COM Terminal 1000V 200Vpk measurements. 750V SENSE INPUT W 4W The maximum withstand voltage between this terminal and earth is 500Vpk 500Vpk. 1000V 200Vpk 750V Low current measurement...
  • Page 15 GETTING STARTED SENSE INPUT Accepts HI sense line in 4W Sense HI W 4W resistance measurement. Terminal Accepts LO sense line in 4W Sense LO resistance measurement. Terminal 1000V 200Vpk 750V 500Vpk The top row of measurement keys are used for Measurement basic DMM measurements such as voltage, Keys...
  • Page 16 GDM-8352 User Manual Measures DC + AC voltage DCV + ACV (page 32). Measures DC + DCI+ACI AC current SHIFT → EXIT (page 36). Measures resistance (2W or 4W) 2W/4W TEMP See page 41. 2W/4W Measures temperature. See TEMP TEMP (SHIFT →...
  • Page 17 GETTING STARTED As the 2ND key, selects the LOCAL measurement item on the 2 display (page 55). Pressing and holding for more than 1 second turns off the 2 display. As the Local key, releases the unit from remote control and returns the instrument to local panel operation (page 96).
  • Page 18 GDM-8352 User Manual Turns the digital filter on or off. FILTER TYPE See page 80. FILTER Sets the type of filter and TYPE TYPE the size of the rolling (SHIFT→FILTER) SHIFT → FILTER EXIT window. See page 81. Enters the configuration menu for...
  • Page 19 GETTING STARTED 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 also toggle the refresh rate between the fast, medium and slow (F, M, S) rates.

  • Page 20: Display Overview

    GDM-8352 User Manual Display Overview Primary measurement units Primary measurement Secondary Display function icons Secondary measurement units GDM-8352 5 ½ Digit Dual Measurement Multimeter n μ F AUTO HOLD RATIO UNCAL USBSTO nμF Secondary AUTOMATH LIMIT SHIFT measurement COMP FILT...

  • Page 21: Rear Panel

    GETTING STARTED Rear Panel Fuse 0.125AT/ Power Cord Digital I/O port 0.063AT Socket DIGITAL I / O LINE RATING 50 / 60 Hz 15VA MAX. FUSE LINE 100VAC 0.125AT 120VAC PASS EOM 220VAC TRIG 0.063AT 240VAC SET1 SET2 SET3 SET4 DISCONNECT POWER CORD AND TEST LEADS BEFORE REPLACING FUSE RS232...
  • Page 22 GDM-8352 User Manual RS232 RS232 RS232 port. This port is used for remote control. See page 92. USB Device Port Type B USB port. This port is used for remote control. See page 92.

  • Page 23: Set Up

    GETTING STARTED 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 24: Power Up

    GDM-8352 User Manual Power Up 1. Ensure the correct line Steps voltage is lined up with the arrow on the fuse holder. If not, see page 139 to set the line voltage and fuse. 2. Connect the power cord to the AC voltage input.

  • Page 25: How To Use The Instrument

    GETTING STARTED 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. Any of the primary functions can be used by Using the simply pressing the desired function key.
  • Page 26 GDM-8352 User Manual 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 27 GETTING STARTED 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.  If a setting or parameter is flashing, it indicates that that particular parameter can be edited.
  • Page 28 GDM-8352 User Manual PERATION Basic Measurement Overview .......... 30 Refresh Rate ............... 30 Reading Indicator ............31 Automatic/Manual Triggering ........31 AC/DC Voltage Measurement .......... 32 Select the Voltage Range ........... 33 Voltage Conversion Table .......... 34 Crest Factor Table ............35 AC/DC Current Measurement ..........

  • Page 29: Operation

    OPERATION Dual Measurement Overview ........... 55 Supported Dual Measurement Modes ...... 55 Using Dual Measurement Mode ....... 56 Advanced Measurement Overview ........60 Supported Advanced Measurement Functions ..60 dBm/dB/W Measurement ..........61 dBm/dB Calculation ........... 61 Measuring dBm/W ............ 61 Measure dB ..............

  • Page 30: Basic Measurement Overview

    GDM-8352 User Manual 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 31: Reading Indicator

    1. The reading indicator next to the 1st display flashes according to the refresh rate setting. Automatic/Manual Triggering By default, the GDM-8352 automatically Overview triggers according to the refresh rate. See the previous page for refresh rate setting details. The TRIG IN pin of the digital I/O port or the...

  • Page 32: Ac/Dc Voltage Measurement

    GDM-8352 User Manual AC/DC Voltage Measurement The GDM-8352 can measure up to 750VAC or 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 33: Select The Voltage Range

    OPERATION 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. The AUTO indicator turns Off automatically.

  • Page 34: Voltage Conversion Table

    GDM-8352 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 35: 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 36: Ac/Dc Current Measurement

    GDM-8352 User Manual AC/DC Current Measurement The GDM-8352 DMM has two input terminals for current measurement. A 1A terminal for current less than 1A and a 10A terminal for measurements up to 10A. The units can measure 0 ~ 10A for both AC and DC current.
  • Page 37 OPERATION SENSE INPUT W 4W 1000V 200Vpk 750V 500Vpk FUSE CAT II 600V 1.25A/1000V Max 10A...

  • Page 38: Select The Current Range

    GDM-8352 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 39 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 40 GDM-8352 User Manual Maximum DCI Selected DCI Range Dynamic Range Dynamic Range DC 20mA ± 60mA max DC 200mA ± 600mA max DC 1A ± 1.25A max DC10A ± 12A max...

  • Page 41: Resistance Measurement

    OPERATION Resistance Measurement Uses the standard V-COM ports. Measurement 2-wire Recommended for measuring Type resistances larger than 1kΩ. Compensates the test lead effect using 4-wire the 4W compensation ports(HI/LO sense ports), in addition to the standard V-COM ports. Recommended for measuring sensitive resistances smaller than 1kΩ.
  • Page 42 GDM-8352 User Manual 4W only SENSE INPUT W 4W 4W & 2W 1000V 200Vpk 750V 500Vpk 4W only FUSE CAT II 600V 1.25A/1000V...

  • Page 43: Select The Resistance Range

    OPERATION 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. The AUTO indicator turns Off automatically.

  • Page 44: Diode Test

    GDM-8352 User Manual Diode Test The diode test checks the forward bias characteristics of a diode by running a constant forward bias current of approximately 1mA through the DUT. 1. Press the key once to activate diode Set to Diode measurement.

  • Page 45: Capacitance Measurement

    OPERATION Capacitance Measurement The capacitance measurement function checks the capacitance of a component. 1. Press the SHIFT → ) keys to activate Set to capacitance measurement. Capacitance Measurement 2. The mode will switch to capacitance mode immediately, as shown below. Capacitance Capacitance Measurement...

  • Page 46: Select The Capacitance Range

    GDM-8352 User Manual 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.

  • Page 47: Continuity Test

    OPERATION 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 key twice to activate continuity Procedure testing. Note: pressing the key once will activate diode testing.

  • Page 48: Set Continuity Threshold

    GDM-8352 User Manual Set Continuity Threshold The continuity threshold defines the maximum resistance allowed in the DUT when testing the continuity. 0 to 2000Ω (Default Threshold:10Ω) Range Threshold Resolution 1Ω 1. Press MENU. Procedure 2. Go to the MEAS menu on level 1 3.

  • Page 49: Frequency/Period Measurement

    OPERATION Frequency/Period Measurement The GDM-8352 can be used to measure the frequency or period of a signal. This function can measure either the voltage frequency/period or current frequency/period, depending on which jack the input signal is input from. Range Frequency...

  • Page 50: Frequency/Period Settings

    GDM-8352 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 200mV, 2V, 20V, 200V, 750V...

  • Page 51: Temperature Measurement

    OPERATION Temperature Measurement The GDM-8352 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 Thermocouple: -200°C ~ +300°C Range &...

  • Page 52: Set The Temperature Units

    GDM-8352 User Manual 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. 4. Select either C (Celsius) or F (Farenheit). 5. Press the Enter key to confirm.

  • Page 53: Select Thermocouple Type

    OPERATION Select Thermocouple Type The GDM-8352 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 type and range -200 to +300˚C -200 to +300˚C...

  • Page 54: Set The Reference Junction Temperature

    GDM-8352 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 55: Dual Measurement Overview

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

  • Page 56: Using Dual Measurement Mode

    GDM-8352 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 57 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 58 GDM-8352 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 SENSE INPUT W 4W 1000V 200Vpk 750V 500Vpk FUSE CAT II 600V 1.25A/1000V...
  • Page 59 OPERATION Voltage/Frequency/Period and Current Measurement SENSE INPUT W 4W Load 1000V 200Vpk 750V 500Vpk 0~1A FUSE CAT II 600V 1.25A/1000V 0~10A 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 60: Advanced Measurement Overview

    GDM-8352 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 61: 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 62 GDM-8352 User Manual Display Reference measurement resistance AUTO HOLD nμF AUTO MATH LIMIT SHIFT COMP FILT SWEEP GPIB REAR To set the reference resistance, use the Up and Setting the Down arrow keys. Reference Resistance The selectable reference resistances are shown below.

  • Page 63: 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 32. Procedure 2.

  • Page 64: Max/Min Measurement

    GDM-8352 User Manual Max/Min Measurement Maximum and Minimum measurement function stores the highest (maximum) or lowest (minimum) reading and shows it on the first display when the 2ND key is pressed. The Max/Min function can be used with the Applicable...

  • Page 65: 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 exiting. The relative function can be used with the Applicable measurements following basic measurement functions:...
  • Page 66 GDM-8352 User Manual 1. To manually set the relative reference value, Manually Set the Relative press SHIFT → REL(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 67: 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 68: Compare Measurement

    GDM-8352 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 69 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 70: Math Measurement

    GDM-8352 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 71: 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 72: Measure Percentage

    GDM-8352 User Manual 3. Press Enter to activate the 1/X math function. The results begin immediately. Display 1/X math measurement indicator AUTO HOLD nμF AUTO MATH LIMIT SHIFT COMP FILT SWEEP GPIB Press the SHIFT → MX/MN(MATH) to Deactivate Math...
  • Page 73 OPERATION 4. Press Enter to confirm the REF% setting and to begin the Percentage measurement. Display Calculated percentage % function meausurement indicator AUTO MATH Press SHIFT → MX/MN to deactivate the Deactivate Math Measurement MATH function, or simply activate another measurement function.

  • Page 74: System/Display Configuration

    GDM-8352 User Manual YSTEM/DISPLAY CONFIGURATION View Serial Number ............75 View Version Number ............75 Beeper Settings ............... 76 Brightness Settings ............77 Input Impedance Settings ..........78 Frequency/Period Input Jack Settings ......79 Digital Filter ..............80 Digital Filter Overview ..........80 Digital Filter Type Settings.........

  • Page 75: View Serial Number

    4. The firmware version number will be displayed in the secondary display. 5. Press Exit to exit from the version menu. Display For details about firmware updates, please contact Note the GW Instek Service Center or visit the GW Instek website at www.gwinstek.com.

  • Page 76: Beeper Settings

    GDM-8352 User Manual Beeper Settings The beeper setting determines how you are notified of a compare or continuity test result. Note: When the beeper setting is off it will also turn off the keypad tones as well as any error or warning tones.

  • Page 77: Brightness Settings

    SYSTEM/DISPLAY CONFIGURATION 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. 4. Set the light setting between 1 (dim) and 5 (bright).

  • Page 78: Input Impedance Settings

    GDM-8352 User Manual Input Impedance Settings The 200mV and 2V DC voltage ranges can be set to an input impedance of 10MΩ or 10GΩ. This setting is only applicable for DC voltage. Range Input impedance 10MΩ, 10GΩ Default 10MΩ 1. Press the MENU key.

  • Page 79: Frequency/Period Input Jack Settings

    SYSTEM/DISPLAY CONFIGURATION Frequency/Period Input Jack Settings The INJACK settings set which input terminal is used for frequency or period measurements. Range Injack VOLT, 1A, 10A Default VOLT 1. Press the MENU key. Procedure 2. Go to MEAS on level 1. 3.

  • Page 80: Digital Filter

    GDM-8352 User Manual Digital Filter Digital Filter Overview The digital filter converts the analog input signal Filter Basics into digital format before passing it to the internal circuits for processing. The filter affects the amount of noise included in the measurement result.
  • Page 81 SYSTEM/DISPLAY CONFIGURATION Filter count defines the number of samples to be Filter Count averaged per reading. More samples offer low noise but a longer delay between measurements. Less samples offer high noise but a shorter delay between measurements. 2 ~ 320 Range: The filter window defines the threshold for when Filter Window...

  • Page 82: Digital Filter Type Settings

    GDM-8352 User Manual Digital Filter Type Settings 1. Press SHIFT → FILTER(TYPE) to enter the Procedure (Digital Filter) Type settings menu. 2. Use the Left and Right arrow keys to navigate to the filter type setting or to select the digit to be edited.

  • Page 83: Restore Factory Default Settings

    SYSTEM/DISPLAY CONFIGURATION Restore Factory Default Settings The factory default settings can be restored at anytime from the System menu. Please see the Appendix on page 138 for a list of the factory default settings. Range Factory DEF YES, NO 1. Press the MENU key. Procedure 2.

  • Page 84: Trigger

    GDM-8352 User Manual Trigger The measurements can be triggered internally or externally. When set to internal, the DMM will be triggered automatically according the refresh rate. When set to external, the DMM will wait for an external trigger signal from the Digital I/O port or from the *TRG command.

  • Page 85: External Trigger

    SYSTEM/DISPLAY CONFIGURATION External Trigger The external trigger uses the digital I/O pin for manual triggering of the DMM. Pin 5 of the digital I/O port is normally high. To trigger the DMM a low pulse of ≥10μs is needed. The *TRG command can also be used to externally trigger the DMM when the DMM is in the external trigger mode.

  • Page 86: Digital I/O

    GDM-8352 User Manual IGITAL I/O Digital I/O Overview ............87 Normal Mode ............. 88 User Mode ..............89...

  • Page 87: Digital I/O Overview

    DIGITAL I/O Digital I/O Overview The Digital I/O port is a dual function port. By default (Normal Mode) the port is used with the compare function to output Hi Fail, Lo Fail, Pass, and EOM (end of measurement) signals. In addition there is also a TRIG IN input pin.
  • Page 88 GDM-8352 User Manual Pins 1 ~ 4 are open-collector outputs, with a Wiring Diagram Pins 1 ~ 4 max input of 15mA. All outputs are active low. Ext Vcc Digital I/O Terminal Imax = 15mA Pin 1-4 Wiring Diagram Pin 5...
  • Page 89 Related DIGitalio:MODE {USER|NORM|?} Commands DIGitalio{X}:SETup {ON|OFF} 1. Connect to the GDM-8352 remotely, see page 91 Procedure for remote control options. 2. Enable the user mode using the DIGitalio:MODE command. See page 131. 3. Set the state of pins 1 ~ 4 using the...
  • Page 90 GDM-8352 User Manual Example DIG:MODE? Queries the mode. >NORM Returns Norm mode. DIG:MODE USER Sets to USER mode. DIG1:SETup ON Turns pin1 output on. DIG2:SETup ON Turns pin2 output on. DIG3:SETup ON Turns pin3 output on. DIG4:SETup ON Turns pin4 output on.

  • Page 91: 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 97. Configure Remote Control Interface ......... 92 USB Interface ............. 92 Configure USB Interface ..........92 Configure RS232 Interface .........

  • Page 92: Configure Remote Control Interface

    GDM-8352 User Manual Configure Remote Control Interface USB Interface The USB device port on the rear panel is used for remote control. The USB port can be configured as either a TMC or CDC interface. When configured as a TMC interface, the DMM can be controlled using National Instruments NI-Visa software*.

  • Page 93: Configure Rs232 Interface

    REMOTE CONTROL 1. Connect the USB cable to the rear panel type B Steps USB port. 2. Press MENU. 3. Go to I/O on level 1. 4. Go to USB on level 2. 5. Select USB-CDC or USB-TMC. Display USB class USB menu setting indicator...
  • Page 94 GDM-8352 User Manual 2. Press MENU. 3. Go to I/O on level 1. 4. Go to RS232 on level 2 and press Enter. 5. The baud rate settings appear. Set the baud rate. 6. Press Enter to confirm the RS232 settings.

  • Page 95: Configure Eol Character

    REMOTE CONTROL Configure EOL Character The TX EOL settings set the EOL (end of line) Overview character for return messages. The EOL characters that can be received from a PC include CR, LF, CR+LF or LF+CR, with CR+LF being the most common.

  • Page 96: Return To Local Control

    GDM-8352 User Manual 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.

  • Page 97: Command Overview

    COMMAND OVERVIEW 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 Compatible Standard...
  • Page 98 GDM-8352 User Manual 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...
  • Page 99 COMMAND OVERVIEW 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: [SENSe:]UNIT? Both SENSe:UNIT? and UNIT? are valid forms.
  • Page 100 For queries, it will return the highest possible value allowed for the particular setting. The GDM-8352 automatically sets the command Automatic parameter to the next available value. parameter range selection...

  • Page 101: Command List

    COMMAND OVERVIEW Command List Configure Commands (Display 1) CONFigure:VOLTage:DC........106 CONFigure:VOLTage:AC ........106 CONFigure:VOLTage:DCAC ........ 106 CONFigure:CURRent:DC ........106 CONFigure:CURRent:AC ........107 CONFigure:CURRent:DCAC ........ 107 CONFigure:RESistance ........107 CONFigure:FRESistance ........107 CONFigure:FREQuency ........108 CONFigure:PERiod ..........108 CONFigure:CONTinuity ........108 CONFigure:DIODe ..........
  • Page 102 GDM-8352 User Manual Measure Commands MEASure:VOLTage:DC? ........113 MEASure:VOLTage:AC? ........113 MEASure:VOLTage:DCAC? ......... 113 MEASure:CURRent:DC? ........113 MEASure:CURRent:AC? ........114 MEASure:CURRent:DCAC? ........114 MEASure:RESistance? ......... 114 MEASure:FRESistance? ........114 MEASure:FREQuency? ........114 MEASure:PERiod? ..........115 MEASure:CONTinuity? ........115 MEASure:DIODe? ..........115 MEASure:CAPacitance? ........
  • Page 103 COMMAND OVERVIEW [SENSe:]FREQuency:INPutjack? ......120 [SENSe:]PERiod:INPutjack ........120 [SENSe:]PERiod:INPutjack? ......... 120 [SENSe:]CONTinuity:THReshold ......120 [SENSe:]CONTinuity:THReshold? ....... 120 [SENSe:]UNIT ............121 [SENSe:]UNIT? ............. 121 [SENSe:]FUNCtion[1/2] ........121 [SENSe:]FUNCtion[1/2]? ........121 Calculate Commands CALCulate:FUNCtion ........... 122 CALCulate:FUNCtion? ......... 122 CALCulate:STATe ..........122 CALCulate:STATe? ..........
  • Page 104 GDM-8352 User Manual TRIGger:SOURce ..........127 TRIGger:SOURce? ..........127 TRIGger:AUTO ............. 127 TRIGger:AUTO? ........... 127 SAMPle:COUNt ........... 127 SAMPle:COUNt? ..........127 TRIGger:COUNt ........... 128 TRIGger:COUNt? ..........128 System Commands SYSTem:BEEPer:STATe ........129 SYSTem:BEEPer:STATe? ........129 SYSTem:BEEPer:ERRor ........129 SYSTem:BEEPer:ERRor? ........129 SYSTem:BEEPer ...........
  • Page 105 COMMAND OVERVIEW Common Commands *CLS ..............133 *ESE? ..............133 *ESE ..............134 *ESR? ..............134 *IDN? ..............134 *OPC?..............134 *OPC ..............134 *PSC? ..............134 *PSC ..............134 *RST ..............135 *SRE? ..............135 *SRE ..............135 *STB? ..............135 *TRG ..............

  • Page 106: Configure Commands (Display 1)

    GDM-8352 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 1 Sets the voltage range to 2 volt. CONFigure:VOLTage:AC Sets measurement to AC Voltage on the first display and specifies the range.

  • Page 107: Configure:current:ac

    COMMAND OVERVIEW CONFigure:CURRent:AC Sets measurement to AC Current on the first display and specifies the range. Parameter: [None] | [Range(<NRf> | MIN | MAX | DEF)] Example: CONF:CURR:AC 10e-2 Sets the measurement mode to ACI with a 200mA range. CONFigure:CURRent:DCAC Sets measurement to DC+AC Current on the first display and specifies the range.

  • Page 108: Configure:frequency

    GDM-8352 User Manual CONFigure:FREQuency Sets measurement to Frequency on the first display and specifies the range. Parameter: [None] | [Range(<NRf> | MIN | MAX | DEF)] Example: CONF:FREQ MAX Sets the frequency measurement range to max. CONFigure:PERiod Sets measurement to Period on the first display and specifies the range.

  • Page 109: Configure:capacitance

    COMMAND OVERVIEW CONFigure:CAPacitance Sets measurement to Capacitance on the first display. Parameter: [None] | [Range(<NRf> | MIN | MAX | DEF)] Example: CONF:CAP 10E-6 Sets the measurement mode to Capacitance with a 10μF Range. CONFigure:FUNCtion? Returns the current function on the first display. Return parameter: VOLT, VOLT:AC,VOLT:DCAC, CURR, CURR:AC,CURR:DCAC, RES, FRES, FREQ, PER, TEMP, DIOD, CONT, CAP...

  • Page 110: Configure2:Voltage:dc

    GDM-8352 User Manual Secondary Display: CONFigure2 Commands CONFigure2:VOLTage:DC Sets measurement to DC Voltage on the second display and specifies the range. Parameter: [None] | [Range(<NRf> | MIN | MAX | DEF)] Example: CONF2:VOLT:DC 1 Sets the voltage range to 2 volts.

  • Page 111: Configure2:Resistance

    COMMAND OVERVIEW CONFigure2:RESistance Sets measurement to 2W Resistance on the second display and specifies the range. Parameter: [None] | [Range(<NRf> | MIN | MAX | DEF)] Example: CONF2:RES 10e3 Sets the range to 20kΩ on the second display. CONFigure2:FRESistance Sets measurement to 4W Resistance on the second display and specifies the range.

  • Page 112: Configure2:Function

    GDM-8352 User Manual CONFigure2:FUNCtion? Returns the current function on the second display. Return parameter: VOLT, VOLT:AC, CURR, CURR:AC, RES, FRES, FREQ, PER, NON CONFigure2:RANGe? Returns the range of the current function on the second display. Return parameter: DCV: 0 .2(200mV), 2(2V), 20(20V), 200(200V), 1000(1000V) ACV: 0.2(200mV), 2(2V), 20(20V), 200(200V), 750(750V)

  • Page 113: 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? > +0.10348E-01 Returns the DC voltage measurement as 0.010348 V. MEASure:VOLTage:AC? Returns the AC voltage measurement on the first display. Parameter: [None] | [Range(<NRf>...

  • Page 114: Measure:current:ac

    GDM-8352 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? > +0.00872E-02 Returns the AC current measurement as 0.0872mA. MEASure:CURRent:DCAC? Returns the DC+AC current measurement on the first display.

  • Page 115: Measure:period

    COMMAND OVERVIEW MEASure:PERiod? Returns the period measurement on the first display. Parameter: [None] | [Range(<NRf> | MIN | MAX | DEF)] Example: MEAS:PER? MAX Returns the period at the maximum range. MEASure:CONTinuity? Returns the continuity measurement on the first display. Example: MEAS:CONT? Returns the continuity.

  • Page 116: Measure2:Voltage:dc

    GDM-8352 User Manual MEASure2:VOLTage:DC? Returns the DC voltage measurement on the second display. Parameter: [None] | [Range(<NRf> | MIN | MAX | DEF)] Example: MEAS2:VOLT:DC? >+0.10321E-01 Returns the DC voltage measurement as 0.010321V. MEASure2:VOLTage:AC? Returns the AC voltage measurement on the second display.

  • Page 117: Measure2:Fresistance

    COMMAND OVERVIEW MEASure2:FRESistance? Returns the 4W resistance measurement on the second display. Parameter: [None] | [Range(<NRf> | MIN | MAX | DEF)] Example: MEAS2:FRES? > +1.00023E+03 Returns the 4W measurement. MEASure2:FREQuency? Returns the frequency measurement on the second display. Parameter: [None] | [Range(<NRf> | MIN | MAX | DEF)] Example: MEAS2:FREQ? >...

  • Page 118: [Sense:]Temperature:rjunction:simulated

    GDM-8352 User Manual [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. [SENSe:]TEMPerature:RJUNction:SIMulated? Returns temperature simulation value. Return parameter: <NR1> (+0000~+5000) ,where +0000=0.00˚C, +5000=50.00˚C [SENSe:]DETector:RATE Sets the detection rate (sample rate)

  • Page 119: [Sense:]Average:count

    COMMAND OVERVIEW [SENSe:]AVERage:COUNt Sets the digital filter average count. Parameter: <NR1> (2~320)|MIN|MAX Example: SENS:AVER:COUN 100 Sets the digital filter average count to 100. [SENSe:]AVERage:COUNt? Returns the current digital filter average count. Return parameter: <NR1>(+002 ~ +320) [SENSe:]AVERage:WINDow Sets the digital filter window. Parameter: 0.01|0.1|1|10|0 (none) Example: SENS:AVER:WIND 0.1 Sets the digital filter window to 0.1%.

  • Page 120: [Sense:]Frequency:inputjack

    GDM-8352 User Manual [SENSe:]FREQuency:INPutjack Assigns an input terminal for the frequency function. Parameter: (0|1|2) 0=volt, 1=1A, 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 121: [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", “FRES”, "FREQ", "PER", "TEMP:TCO", "DIOD", "CONT", “CAP”...

  • Page 122: Calculate Commands

    GDM-8352 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 123: 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 124: Calculate:limit:upper

    GDM-8352 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 125: 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 126: Trigger Commands

    GDM-8352 User Manual TRIGger Commands READ? Returns 1 and 2 display value. Example1: SAMP:COUN 4(USBTMC) READ?(count = SAMP:COUN/2, rounded up) >+0.10212E-01,+0.00000E+00,+0.10348E-01,+0.00000E+00 Queries 2 counts of measurement samples from the first and second display. Example2: SAMP:COUN 3(USBCDC or RS232) READ?(Count = 3) >+0.10212E-01,+0.00000E+00,+0.10348E-01,+0.00000E+00,...

  • Page 127: Trigger:source

    COMMAND OVERVIEW TRIGger:SOURce Selects the trigger source. Parameter: INT | EXT Example: TRIG:SOUR INT Sets the trigger source as internal. TRIGger:SOURce? Returns current trigger source. 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.

  • Page 128: Trigger:count

    GDM-8352 User Manual TRIGger:COUNt Sets the number of trigger counts. Parameter: <NR1>(1 ~ 9999) | MIN | MAX Example: TRIG:COUN 10 Sets the number of trigger counts to 10. TRIGger:COUNt? Returns the number of trigger counts. Parameter: None | MIN | MAX...

  • Page 129: System Commands

    COMMAND OVERVIEW 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. Return parameter: Beep on Pass | Beep on Fail | No Beep SYSTem:BEEPer:ERRor Sets the beeper to sound on an SCPI error.

  • Page 130: System:display

    GDM-8352 User Manual 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 (nine characters/numbers) INPut:IMPedance:AUTO Sets the input impedance for DCV mode (100mV range and 1V range).

  • Page 131: Display:text:clear

    COMMAND OVERVIEW DISPlay:TEXT:CLEar Clear message from display. Parameter:NONE Example: DISP:TEXT:CLE DIGitalio:MODE Sets the mode for Digital I/O. Parameter: NORM|USER Example: DIG:MODE NORM Sets the Digital I/O Mode to normal. DIGitalio:MODE? Returns the Digital I/O mode. Return parameter: NORM|USER DIGitalio0:SETup Sets pins 1~4 of the Digital I/O port when in user mode. Parameter: <boolean>,<boolean>,<boolean>,<boolean>...

  • Page 132: Digitalio[1|2|3|4]:Setup

    GDM-8352 User Manual DIGitalio0:SETup? Returns the state of pins 1~4 of the Digital I/O port when in user mode. Return parameter: <boolean>,<boolean>,<boolean>,<boolean> Example: DIG0:SET? >1,0,1,0 DIGitalio[1|2|3|4]:SETup? Returns the state of the selected pin(1, 2, 3 or 4) of the Digital I/O port when in user mode.

  • Page 133: Interface Commands

    COMMAND OVERVIEW Interface Commands SYSTem:LOCal Enables local control (front panel control) and disables remote control. SYSTem:REMote Enables remote control and disables local control (front panel control). Local control can be recalled by pressing the 2ND or local button. SYSTem:RWLock Enables remote control and disables local control (front panel control).

  • Page 134: Ese

    GDM-8352 User Manual *ESE Sets the ESER contents. Parameter: <NR1> (0~255) Example: *ESE 65 Sets the ESER to 01000001 *ESR? Returns SESR (Standard Event Status Register) contents. Example: *ESR? >198 Returns 198. SESR=11000110 *IDN? Returns the manufacturer, model No., serial number and system version number.

  • Page 135: Rst

    COMMAND OVERVIEW *RST Recalls default panel setup. *SRE? Returns the SRER (Service Request Enable Register) contents. *SRE Sets SRER contents. Parameter: <NR1>(0~255) Example: *SRE 7 Sets the SRER to 00000111. *STB? Returns the SBR (Status Byte Register) contents. Example:*STB? >64 Returns the contents of the SBR as 01000000.

  • Page 136: Faq

    5. Ensure that an appropriate range setting is used. If a too-large range is used, the resolution or the measurement may be affected. For more information, contact your local dealer or GW Instek at www.gwinstek.com / marketing@goodwill.com.tw.

  • Page 137: Appendix

    APPENDIX PPENDIX System Menu Tree LEVEL 1 SYSTEM MEAS TEMP TX TERM LEVEL 2 UPDATE Vx.xx LEVEL 2 TX EOL CR+LF LF+CR LEVEL 2 RS232 USB-CDC 9600 USB-TMC 19200 38400 57600 115200 LEVEL 2 SENSOR UNIT TYPE J 23.00 TYPE K TYPE T LEVEL 2 CONT...

  • Page 138: Factory Default Settings

    GDM-8352 User Manual Factory Default Settings Measurement Item: DCV Range: AUTO Rate: SYSTEM Menu: BEEP: Pass LIGHT: 3 S/N: N/A FACTORY: NO MEAS Menu: CONT: 0010Ω INJACK: VOLT INPUT R: 10M TEMP Menu: SENSOR: TYPE J SIM: 23.00 UNIT: C...

  • Page 139: 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 140: Replacing The Input Fuse

    GDM-8352 User Manual Replacing the Input Fuse Rating Size Fuse Rating Type 1.25A 1000V 6.3mm X 32mm F1.25A 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 141 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 142: Status System

    GDM-8352 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? *SRE...

  • Page 143: Specifications

    APPENDIX Specifications The specifications apply when the DMM is warmed up for at least 30 minutes and operates in the slow rate. Below are the basic conditions required to operate the DMM within specifications: Calibration: Yearly  Accuracy: ± (% of Reading + Digits) ...
  • Page 144 GDM-8352 User Manual DC Voltage Range Resolution Full Scale Accuracy 200.000mV 0.001mV 239.999 0.012% + 8 2.00000 V 0.00001V 2.39999 0.012% + 5 20.0000 V 0.0001V 23.9999 0.012% + 5 200.000 V 0.001V 239.999 0.012% + 5 1000.00 V 0.01 V 1020.00...
  • Page 145 APPENDIX [1] [2] Resistance Current Range Resolution full scale Accuracy (4W) source 200.000Ω 0.001Ω 239.999 0.05% + 8 2.00000kΩ 0.00001kΩ 2.39999 0.05% + 5 20.0000kΩ 0.0001kΩ 23.9999 μ 0.05% + 5 200.000kΩ 0.001kΩ 239.999 0.05% + 5 μ 2.00000MΩ 0.00001MΩ 2.39999 0.05% + 5 μ...
  • Page 146 GDM-8352 User Manual AC Current Accuracy [1][3] Range Resolution Full Scale 20 Hz to 45 45 Hz to 2 2 kHz to 10kHz 20.0000mA 0.0001mA 23.9999 1.5% + 100 0.5% + 100 2% + 200 200.000mA 0.001mA 239.999 1.5% + 100 0.5% + 100 2% + 200 1.00000A...
  • Page 147 APPENDIX Thermocouple Specifications Type Measurement Range Accuracy -200 ~ 0°C 0.6°C J, K, T 0 ~ +300°C 0.3°C *Specifications do not include probe accuracy. Capacitance Range Resolution Full Scale Test Current Accuracy μ 10.00nF 0.01nF 11.99 2.0%+10 μ 100.0nF 0.1nF 119.9 2.0%+4 μ...

  • Page 148: Additional Specifications

    GDM-8352 User Manual Additional Specifications The Additional Specifications apply in addition to the Specifications listed on page 143 when the operating temperature exceeds 18˚C ~ 28˚C. DC Voltage Measurement method: Sigma Delta A-to-D converter. Input protection: 1000V peak on all ranges.
  • Page 149 APPENDIX AC Voltage (AC Coupling Mode/AC + DC Coupling Mode) Measurement method: AC coupled true RMS - measure the AC component with up to 400 VDC bias on any range. Crest Factor: Maximum 3 at full scale. Input Impedance: 1 MΩ ± 2% in parallel with <100 pF on all ranges. Maximum input voltage: 750 Vrms on all ranges.
  • Page 150 GDM-8352 User Manual AC Current (AC Coupling Mode/AC + DC Coupling Mode) Measurement method: Current to the fuse and current shunt, AC coupled true RMS measurement (measures the AC component only). Crest factor: Maximum of 3 at full scale. Rate...
  • Page 151 APPENDIX Resistance (2-wire resistance and 4-wire resistance) Measurement method: 2-wire resistance or 4-wire resistance. Open-circuit voltage: Approximately 7.5 VDC. Input protection: 500Vpeak on all ranges. Diode Measurement method: 1mA ±2% constant current source. Open-circuit voltage: Approximately 7.5 VDC. Input protection: Input protection of 500V peak. Rate Additional Rate Error Count Fast...
  • Page 152 GDM-8352 User Manual Frequency Measurement method: Reciprocal counting technique. Input impedance: 1M ± 2% in parallel with <100pF on all ranges. Ω Maximum input voltage: 750 Vrms on all ranges. Input protection: 1200V peak on all ranges with gas discharge.
  • Page 153 APPENDIX Measurement Noise Rejection CMR (Common Mode Rejection) For 1kΩ unbalance LO lead, 50/60 Hz ± 0.1%: DC >120 dB, AC > 70 dB Temperature Coefficients Specified ambient temperature range accuracy is typically within the calibration temperature (Tcal) ± 5°C range. If the operating environment of the multimeter is within 0°C to (Tcal)-5°C or (Tcal)+5°C to 50°C (specification units/°C), you must add the additional temperature coefficient errors to the accuracy...

  • Page 154: Dimensions

    GDM-8352 User Manual Dimensions GDM-8352 Units = mm. GDM-8352 SENSE INPUT 5 ½ Digit Dual Measurement Multimeter W 4W 1000V 200Vpk 750V POWER DC + AC RANGE LOCAL 500Vpk TEMP 2W/4W Hz/P Auto REL# MATH COMP TYPE Enter FUSE SHIFT...

  • Page 155: Declaration Of Conformity

    No. 69 Lushan Road, Suzhou New District Jiangsu, China. declare that the below mentioned product Type of Product: Digital Multimeter Model Number: GDM-8351, GDM-8352 are herewith confirmed to comply with the requirements set out in the Council Directive on the Approximation of the Law of Member States relating to Electromagnetic Compatibility (2004/108/EC) and Low Voltage Directive (2006/95/EC).
  • Page 156 GDM-8352 User Manual NDEX Accessories ......... 12 Continuity Advanced measurement setting ..........47 Conventions ....... 25 compare .......... 68 ..........63 Current dBm/dB calculation ..... 61 range ..........38 dBm/W .......... 61 setting ..........36 Digital filter settings ..... 82 Declaration of conformity ..

  • Page 157: Index

    INDEX Input jack settings ...... 79 fuse ............ 7 Serial number ......75 Main features ......11 Service operation Marketing about disassembly ......6 contact .......... 136 contact .......... 136 Menu tree ........137 Specifications ......143 Period Status system ......142 setting ..........

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