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1. 72 Math Measurement 72 Measure MXB eee 72 Measure 1 X it ttt 73 Measure 74 30 GW INSTEK OPERATION Basic Measurement Overview Refresh Rate Background The refresh rate defines how frequently the 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 For further details please see the specifications Refresh rate Function 5 M F Readings Continuity Diode 10 20 40 DCV DCI R 5 10 40 ACV ACI 5 10 40 Frequency Period 1 10 76 Capacitance 2 2 2 Steps 1 Press the left or right arrow keys to change the refresh rate 2 The refresh rate will be FoMes shown at the top of the display N The refresh rate cannot be set for capacitance Note measurement 31 GW INSTEK GDM 834X Series User Manual Reading Indicator Overview 1 The reading indicator next to the 1st display flashes according to the refresh rate setting FI dE LLLILI th v Automatic Manual Triggering Overview By default the GDM 8342 8341 automatically triggers according to the refresh rate See the previous page for refresh rate setting details The TRIG key is used t
2. GW INSTEK OPERATION Set Continuity Threshold The continuity threshold defines the maximum resistance allowed in the DUT when testing the continuity Range Threshold 0 to 10000 Default Threshold 10Q Resolution 10 Procedure 1 Press MENU 2 Go to the MEAS menu on level 1 3 Go to the CONT menu on level 2 4 Set the continuity threshold level 5 Press the Enter key to confirm the continuity settings 6 Press EXIT to exit the CONT setting menu Display Continuity Continuity function setting indicator Ss FANT T EFT LHII rt Li 1 si 49 GW INSTEK 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 Range PASS Beeps when the continuity passes FAIL Beeps when the continuity fails OFF Beeper is turned off Procedure 1 Press MENU 2 Go to the SYSTEM menu on level 1 3 Go to the BEEP menu on level 2 4 Set the BEEP setting to PASS FAIL or OFF 5 Press the AUTO ENTER key to confirm the beeper settings 6 Press EXIT to exit the BEEP setting menu Display Beep Beep menu setting indicator h v Pan 50 GW INSTEK OPERATION Frequency Period Measure
3. N Note GDM 8342 only Main Display Shows measurement results and parameters For display configuration details see page 78 light setting For an overview of the main display see page 20 14 GW INSTEK GETTING STARTED v Q 9F Ht Input INPUT This terminal is used for all Terminal v Q r dt measurements except for DC AC current measurements MAX AX 1000V 5A 750V ps COM Terminal ow ws Accepts ground COM line in all 5A measurements The maximum withstand voltage AX QE between this terminal and earth is COM 500Vpk m DC AC 0 5A Low current measurement Terminal terminal Accepts DC AC Current input For details see page 39 AMPS Fuse Holder DC 500pA 0 5A AC 500 0 5 As a fuse protects the instrument from over current Rating T0 5A 250V This terminal accepts DC AC current input For the fuse replacement procedure see page 146 DC AC 12A Vpk bd Mis High range current measurement Terminal L terminal Accepts DC AC Current input For DCI or ACI details see page 39 15 GW INSTEK GDM 834X Series User Manual Measurement top row of measurement keys are used for Keys basic DMM measurements such as voltage 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 The secondary function is acc
4. Filename Format Overview When files are saved to USB they are saved as a number starting from GW000NGWO000 XX CSV and are automatically incremented for each new CSV file For example the first file will be named GW000 GW000 XX CSV the next GW001 GW001 XX CSV and so on Note that the suffix XX represents a number from 00 to 99 Each time the system logs more than 50000 readings in total a new file is generated and the suffix is incremented For 85 GW INSTEK 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 GW000NGW000 02 CSV counts 100001 102000 N Please note that automatic file name generation Note only occurs ifthe FILE setting is set to NEW FILE See page 92 for details Please note that the suffix will only be incremented if the total number of readings exceeds 50000 To be able to exceed 50000 readings either the FILE setting should be set to CONTINU continuous or the Count setting should be set to CONTINU continuous See page 91 and 92 for details Operator Mode Overview In the operator mode you can choose to operate in Simple mode or in Advance mode where various parameters can be designated by the user Simple Mode This mode is the easiest operation mode and is almost setting free It is the default operating mode After
5. 53 Dual Measurement Overview 57 Advanced Measurement Overview 62 dBm dB W 63 Max Min 66 Relative Measurement 67 Hold 69 Compare 70 Math 72 SYSTEM DISPLAY 76 View Serial Number 77 View Version Number 77 Brightness 5 78 Input Resistance Settings 79 GW INSTEK GDM 834X Series User Manual Frequency Period Input Jack Settings 80 Compatibility Settings tne 81 Restore Factory Default Settings 82 5 5 83 USB Store 84 REMOTE CONTROL seien sb eis 101 Configure Remote Control Interface 102 Return to Local Control 105 COMMAND OVERVIEW 106 Command Syntax sedes Ei 106 Command List edet oet head 111 142
6. Secondary Displays the units for the secondary measurement Measurement function Units Secondary Displays the secondary measurement function Measurement function icons Function Status Display status icons for operations functions that Icons are not linked to the primary or secondary functions Primary Display Displays the results of the primary measurement 21 GW INSTEK GDM 834X Series User Manual Rear Panel Optional GPIB port GDM 8342 only Power Cord USB Device Port Fuse Calibration Port 0 125AT 0 063AT GPIB Port The GPIB port be used for remote control This is a factory installed option for the GDM 8342 only Y 120 Accepts the power cord 8 sf AC 100 120 220 240V ove 4 i 10 50 60Hz For power on sequence see page 25 22 GW INSTEK GETTING STARTED Holds the main fuse i 100 120 VAC 0125 Fuse Socket Y 120 o m Ove Calibration Port CALIBRATION USE ONLY USB Device lt 220 240
7. Measurement Accuracy 1 year Sensor Type Range Resolution 23 C x5 C Thermocouple K 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 APPENDIX GW INSTEK Dimensions GDM 8342 GDM 8341 arenas 0 WR 107 e gt 231 265 155 GW INSTEK GDM 834X Series User Manual Declaration of Conformity We GOOD WILL INSTRUMENT 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 Type of Product Digital Multimeter Model Number GDM 8342 GDM 8341 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 For the evaluation regarding the Electromagnetic Compatibility and Low Voltage Directive the following standards were applied EMC EN 61326 1 Electrical equipment for measurement control an
8. M 11 ACCOSSOMIOS ee P 12 Package Contents 13 T E mt 14 GDM 8342 8341 Front 14 Display Overview 20 Rear Panel ertt e ee 22 10 GW INSTEK 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 Performance accuracy 0 02 High current range 10A High Voltage range 1000V e High ACV frequency response 100kHz Features 50000 count display Multi functions DCV ACI DCI R Hz Temp Continuity Diode test MAX MIN REL dBm Hold MX B 1 X REF dB Compare e Manual or Auto ranging AC true RMS Data Logging to USB Data logging to PC using an Excel Add In Interface Voltage Resistance Diode Capacitance Temperature input e Current input USB device port as standard for remote control USB host for data logging e Optional GPIB factory install e Calibration port for service operators only e Excel Add In for easy to use remote control data logging and for saving recalling setups These features are only available on the GDM 8342 1 GW INSTEK GDM 834X Series User Manual Accessories Standard Part number Description Accessories 82DM 83420E
9. 111 Command 106 interface configuration iio ssi eiii reiten 103 SB 102 Replacing the AC source fuse 145 Replacing the input fuse 146 Resistance ipe OTRO 44 43 Return from remote control 105 Safety instruction Service operation about 6 Specifications Status System menu tree Temperature reference junction temperature 56 53 SEINE 53 DIM HER DE 56 thermocouple 55 158 Tilt stand 24 Triggering unm dz UK power 9 USB Store adVanee asciende 97 CSV 2 84 95 deleting files or directories 99 file option 92 filename filename 85 long record 88 operator 86 OVerView 83 SAVE 91 Voltage comparison table 37 Ctest factor 38
10. DC 500mA max 100mA DC5A 1 DC 10 10 GW INSTEK OPERATION Resistance Measurement Set to Q 1 Press the Q key to activate resistance Measurement measurement Note pressing the Q key twice will activate continuity measurement instead 2 The mode will switch to resistance mode immediately as shown below Display Resistance Resistance Measurement lt units range Js AUTO 5 Connection The GDM 8342 8341 uses 2 wire resistance measurement Connect the test leads between the VO 4t terminal and the COM terminal 43 GW INSTEK GDM 834X Series User Manual Select the Resistance Range The resistance range can be set automatically or manually Auto Range To turn the automatic range selection On Off press the AUTO key Manual Range Press the Up or the Down key to select the range The AUTO indicator turns Off automatically If the appropriate range is unknown select the highest range Selectable Range Resolution Full scale BN 5000 10mQ 510 002 Ranges 5kQ 100m 5 1000kQ 50kQ 10 51 000 0 500kQ 10Q 510 00kQ 5MO 1009 5 1000MQ 50MO 1kQ 51 000MQ N For further details please see the specifications on Note page 152 GW INSTEK OPERATION Diode Test The diode test checks the forward bias characteristics of a diode by
11. 510 00 1 50 40 0 50 20 1 50 40 3 00 60 2 1 4 max 5A 100pA 5 1000 2 0 40 0 509630 0 5 10 1 12 000 2 096440 0 50 30 X x 0 8V max 1 The 500pA range requires an input of gt 35p1A to meet specifications The 5mA 10A ranges need more than 5 of full scale range to meet specifications 2 Input current 5k 20kHz 330mArms 3 The accuracy of ACI DCI is equal to ACI s with 10 more digits added The specifications are guaranteed to 10A A beeping alarm will go off when the input current being measured is higher than 10A 151 GW INSTEK GDM 834X Series User Manual Resistance Accuracy 1 year 23 C Resistance Resolution Full Scale Test Current 5 C 2 5000 10mQ 510 00 0 83mA 0 1 5 1 5kQ 100mQ 5 1000 0 83mA 0 1 3 1 50kQ 10 51 000 83pA 0 19643 500kQ 10Q 510 00 8 3pA 0 19643 5MQ 1000 5 1000 830nA 0 19643 50MQ 1KQ 51 000 560nA 10MQ 0 3 3 1 Using the REL function If you don t use the REL function then increase the error by 0 2Q 2 When measuring resistances greater than 500kQ please use shielded test leads to eliminate the noise interference that may be induced by standard test leads Open circuit voltage approximates 6V max on 500 5 range approximates 5 5V max on 50MQ range Input protection of 500V peak on all ranges Diode Accuracy Range Resolution Full Scale Test Current 1 year 23 5 C 5V 100pV 5 1000 0 83mA 0
12. Returns the period measurement on the first display Parameter None Range lt NRf gt MIN MAX DEF Example MEAS PER MAX Returns the period at the maximum range 124 GW INSTEK 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 Parameter NONE J K T Example MEAS TEMP TCO J gt 2 50E 1 Returns the temperature MEASure2 VOLTage DC Returns the DC voltage measurement on the second display Parameter None Range lt NRf gt MIN MAX DEF Example MEAS2 VOLT DC gt 0 488E 4 Returns the DC voltage measurement as 0 0488 mV MEASure2 VOLTage AC Returns the AC voltage measurement on the second display Parameter None Range lt NRf gt MIN MAX DEF Example MEAS2 VOLT AC gt 0 511E 3 Returns the AC voltage measurement as 0 511 mV 125 GW INSTEK GDM 834X Series User Manual MEASure2 CURRent DC Returns the DC current measurement on the second display Parameter None Range lt NRf gt MIN MAX DEF Example MEAS2 CURR DC gt 0 234 4 Returns the DC current measurement as 0 0234 mA MEASure2 CURRent AC Returns the
13. 127 SENSe TEMPerature RJUNCction SIMulated 127 SENSe TEMPerature RJUNction SI Mulated 127 5 5 127 SENSe DETector RATE 127 SENSe FREQuency IN Putjack 128 SENSe FREQuency INPutjack 128 5 128 5 128 SENSe CONTinuity THReshold 128 SENSe CONTinuity THReshold 128 129 SENSe UNIT ccccsececsecssscccessssssssssssssseeseeeeseseeeee 129 SENSe FUNCtion 1 2 es 129 SENSe FUNCtion 1 2 es 129 GW INSTEK COMMAND OVERVIEW Calculate Commands 130 130 1 5 2 130 CALCulate STATe 2 130 CALCulate MINimum 130 CALCulate MAXimum seen 130 CALCulate HOLD REFerence 131 131 1 131 1 131 CALCulate LlI Mit LOWer 2 131 CALC
14. press Exit to cancel setting the relative reference value Display Relative REL setting value setting mode Dci WEL Molt tot tot ta Deactivate Press the REL key again to deactivate the Relative Relative measurement mode or simply activate Measurement another measurement function 68 GW INSTEK 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 Applicable The hold function can be used with the measurements following basic measurement functions ACV DCV ACI DCI Hz P TEMP Procedure 1 Press the HOLD key 2 The measurement reading appears on the primary display and the hold threshold on the secondary display Display Measurement Hold reading threshold AC HOLD 1 18 tu Set the Hold Use the Up and Down arrow keys to select a Threshold hold threshold level as a percentage Range 0 01 0 1 1 10 Deactivate Hold Press the HOLD key for 2 seconds to deactivate Measurement the hold measurement or simply activate another measurement function 69 GW INSTEK 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 Applicable The compare function can be used with the measurements following basic measurement function
15. running a constant forward bias current of approximately 0 83mA through the DUT Set to Diode 1 Press the 4 key once to activate diode Measurement measurement Note pressing the 4 key twice will activate the capacitance measurement instead 2 The mode will switch to Diode mode immediately as shown below Display Diode Diode function state indicator c GP _ n Inm norm 11 LI LIN Connection Connect the test lead between the VO r 4t terminal and COM terminal Anode V Cathode COM The display updates the reading 45 GW INSTEK GDM 834X Series User Manual Capacitance Measurement The capacitance measurement function checks the capacitance of a component Set to Diode 1 Press the gt 4 key twice to activate Measurement capacitance measurement Note pressing the gt t key once will activate the diode measurement instead 2 The mode will switch to capacitance mode immediately as shown below Capacitance Capacitance Measurement Display indicator units range Lo d c o m Anl LILU Connection Connect the test lead between the VO r 4c terminal and COM terminal Positive V Negative COM The display updates the reading Y CN GW INSTEK OPERATION Select the Ca
16. APPENDIX Ce 143 System Menu 143 Factory Default 144 Replacing the AC Source Fuse 145 Replacing the Input Fuse 146 Status system 2 148 Specifications 149 DITION SIONS tret eee ges 155 Declaration of 156 INDEX 157 GW INSTEK Table of Contents 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 N Warning Identifies conditions or practices that WARNING could result in injury or loss of life N Caution Identifies conditions or practices that CAUTION could result in damage to the DMM or to other properties DANGER High Voltage Attention Refer to the Manual Protective Conductor Terminal Earth ground Terminal Do not dispose electronic equipment as unsorted municipal waste Please use a separate collection facility or contact the supplier from which this instrument was purchased bf E D GW INSTEK GDM 834X Series User Manual Safety Guidelines General Make sure t
17. 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 The above measuring configuration is used to measure the voltage present on the resistance under test and the current through the resistance under test when using the DCI DCV or ACI ACV dual measurement function 61 GW INSTEK 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 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 Basic Measurement Advanced ACV ACI Meas DCV DCI Q Hz P TEMP DIODE CAP dB s X X X X X X dBm T X X X X X X Max Min e X e Relative gt X e Hold e X X Compare X e Math e e X X Temperature measurement is not supported by the GDM 8341 62 GW INSTEK OPERATION dBm dB W Measurement dBm dB Calculation Overview Using the or DCV measurement results the DMM calculates the dB or dBm value based on a reference
18. INSTEK GDM 834X Series User Manual System Commands Status Commands Interface Commands Common Commands 114 5 5 136 5 2 136 136 SYSTem BEEPer ERRor 136 SYSTem ERRor 136 SYSTem VERSion 136 SYSTem bDISPl y itte 137 SYSTem DISPlay ie iere 137 5 5 5 137 5 5 5 2 137 5 137 INPut IMPedance AUTO 137 INPut IMPedance AUTO 137 STATus QUEStionable ENABle 138 STATus QUEStionable ENABle 138 STATus QUEStionable EVENt 138 5 138 SY STemilO Calis 138 5 5 138 SYSTemiRWLEoGle 5 e ptite enti 138 CES etate er 139 dog 139 ESE REUNION NUN 139 ESR 139 nee 139 P M 139 lit EMINENS 140 140 140
19. INSTEK USB STORE Time Mode Available only in Advance Mode Range TIME CURRENT RESTART Default RESTART Overview The Time Mode setting designates how the 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 The RESTART setting restarts the time stamp time to 0 each time the USB STO function is used This setting will appear automatically after the USB Store function has been started in Advance mode see page 97 for details Display Tmode menu Tmode menu setting indicator HE LIN INL IN I Timer Range TIMER 00 00 00 23 59 59 hours minutes seconds Default Elapsed time from when the unit was switched on GW INSTEK GDM 834X Series User Manual Overview The timer setting sets the current timer time 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 on 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 count for each time this occurs Note however the day count cannot be set in the timer settings A The GDM 834X uses volatile RAM and does not Note have a CMOS backup battery to save the TIMER settings when the power is turned off When the power is reset the TIMER setting will be reset to 00 00 00
20. Manual SYSTem Related Commands SYSTem BEEPer STATe Selects the beeper mode no beep beep on fail and beep on pass Parameter lt NR1 gt 0 1 2 0 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 Parameter ON OFF Example SYST BEEP ERR ON Allows the beeper to sound when an SCPI error occurs SYSTem BEEPer ERRor Returns the beeper error mode Return parameter 0 1 0 1 ON SYSTem ERRor Returns the current system error if any SYSTem VERSion Returns system version Return Parameter X XX GW INSTEK 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 Sets the SCPI mode to normal SYSTem SCPi MODE Returns the SCPI mode Return parameter NORMAL COMPATIBLE INPut IMPedance AUTO Sets the input impedance for DCV mode Parameter ON 10G OFF 10M Example INP IMP AUTO ON Turns the Automatic input impedance
21. Occasionally however a temporary conductivity caused by condensation must be expected e Pollution degree 3 Conductive pollution occurs or dry non conductive pollution occurs which becomes conductive due to condensation which is expected In such conditions equipment is normally protected against exposure to direct sunlight precipitation and full wind pressure but neither temperature nor humidity is controlled Storage Location Indoor environment Temperature 10 C to 70 C e Humidity 0 35 C lt 90 RH gt 35 C lt 80 RH Disposal Do not dispose this instrument as unsorted municipal waste Please use a separate collection facility or contact the supplier from which this instrument was purchased Please make sure discarded electrical waste is properly recycled to reduce environmental impact GW INSTEK 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 Earth Blue Neutral 7 Brown Live Phase As the colours of the wires in main leads may not correspond with the coloured marking identified in your plug appliance proceed as follows The wire wh
22. Parameter None Range lt NRf gt 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 Parameter None Range lt NRf gt MIN MAX DEF Example CONF2 CURR DC 50e 3 Sets the DC current range to 50mA on the second display CONFigure2 CURRent AC Sets measurement to AC Current on the second display and specifies the range Parameter None Range lt NRf gt MIN MAX DEF Example CONF2 CURR AC 50e 2 Sets the measurement mode to ACI with a 500mA range on the second display CONFigure2 RESistance Sets measurement to 2W Resistance on the second display and specifies the range Parameter None Range lt NRf gt MIN MAX DEF Example CONF2 RES 50e3 Sets the range to 50kQ on the second display 120 GDM 834X Series User Manual GW INSTEK COMMAND OVERVIEW CONFigure2 FREQuency Sets measurement to Frequency on the second display and specifies the range Parameter None Range lt NRf gt 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 Parameter None Range lt NRf gt MIN MAX DEF Example CONF2 PER Sets the DMM to period measurement using the previous range
23. RRS 140 IJ ML 140 140 GW INSTEK COMMAND OVERVIEW BETHLEEM E UU 140 e E UA 140 115 GW INSTEK 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 lt NRf gt MIN MAX DEF Example CONF VOLT DC 5 Sets the voltage range to 5 volts CONFigure VOLTage AC Sets measurement to AC Voltage on the first display and specifies the range Parameter None Range lt NRf gt MIN MAX DEF Example CONF VOLT AC Sets the AC range to auto range CONFigure VOLTage DCAC Sets measurement to DC AC Voltage on the first display and specifies the range Parameter None Range lt NRf gt MIN MAX DEF Example CONF VOLT DCAC Sets the DC AC voltage range to auto range CONFigure CURRent DC Sets measurement to DC Current on the first display and specifies the range Parameter None Range lt NRf gt MIN MAX DEF Example CONF CURR DC 50e 3 Sets the DC current range to 50mA 116 GW INSTEK COMMAND OVERVIEW CONFigure CURRent AC Sets measurement to AC Current on the first display and specifies range Parameter None Range lt NRf gt 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
24. SHIFT SHIFT EXIT gt COMP HOLD COMP SHIFT HOLD SHIFT EXIT INT EXT TRIG TRIG INT EXT SHIFT TRIG SHIFT EXIT gt 18 Measures the Relative value page 67 Manually sets the reference value for the Relative value measurement REL Measures the Maximum or the Minimum value page 66 MATH Enters the Math measurement mode The supported math functions include MX B REF and 1 X See page 72 for details MX MN Activates the Hold function page 69 COMP Activates the compare measurement function See page 70 HOLD Triggers sample acquisition manually when the trigger is set to external triggering See page 32 Note Not supported for capacitance measurement INTIEXT Toggles the trigger source as either internal or external manual trigger TRIG GW GETTING STARTED MENU USB STO Enters the configuration menu for MEN System Settings Measurement Settings Temperature measurement settings I O settings and USB storage settings See page 76 for the system menu USB STO USB STO SHIFTS MENU EXIT MENU Logs measurement data to a USB drive This function is only available for the GDM 8342 See page 83 SHIFT EXIT pum When used as a SHIFT key it is EXIT used to access the secondary functions associated with the measurement keys When used as an EXIT key it will exit out of men
25. STATQUESEVEN STATQUESENAB value Fina alii STAT QUES ENAB Standard Event 6 Request Service Standard Event 7 Not Used Event Register Enable Register Serial Poll SPOLL SRE lt value gt STB SRE 0 Operation Complete Not Used 2 Query Error 3 Device Error OR Ouiput Butter 4 Execution Error 5 Command Error Not Used 7 Power On ESR ESE value ESE For the following command sets please refer to the diagram above STAT QUES EVEN STAT QUES ENAB STAT QUES ENAB ESR ESE ESE STB 148 GW INSTEK 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 e Calibration Yearly Operating Temperature Specification 18 28 C 64 4 82 4 F Relative Humidity 80 Non condensing e Accuracy of Reading Digits AC measurements are based on 50 duty cycle e The power supply cable must be grounded to ensure accuracy All specifications are applicable to the main 159 display only General Specifications Specification Conditions Temperature 23 C 5 C Humidity 8096RH 75 RH for resistance measurement readings greater than 10MQ Operating Environment 0 50 C Temperature Range 0 35 C Relative Humidity 8096RH gt 35 C Relative Humidity lt 70 RH Indoor use only Alti
26. appropriate range is unknown select the highest range Selectable Range Resolution Full scale Curent Ran ers 500 10nA 510 00pA 5mA 100nA 5 1000mA 50mA 1pA 51 000mA 500mA 10pA 510 00mA 5A 100pA 5 1000A 10A 1mA 12 0004 N NOS For further details please see the specifications on page 149 N T DC currents with AC components cannot be accurately measured if the DC AC component exceed the ADC dynamic range for the selected DC range Any current exceeding the ADC 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 GW INSTEK GDM 834X Series User Manual For example A 5A DC 5A Range OV B E A B Input exceeds the ADC dynamic range C D The DCI offset causes the input to exceed the upper ADC dynamic range E The DCI offset causes the input to exceed the lower ADC dynamic range The DC current range should be manually selected when the following conditions are true e When DCI measurement is used e When the signals being measured contain both DC and AC components e When the amplitude of the AC component in the measured signal is higher or lower than the dynamic range of the range being currently selected by the auto range function Maximum Dynamic Range 42 Selected DCV Range ADC Dynamic Range DC 500pA max 0 1mA DC 5mA 1 DC 50mA 10
27. display and specifies range Parameter None Range lt NRf gt MIN MAX DEF Example CONF CURR DCAC 50e 2 Sets the measurement mode to DC AC Current with a 500mA range CONFigure RESistance Sets measurement to 2W Resistance on the first display and specifies range Parameter None Range lt NRf gt MIN MAX DEF Example CONF RES 50e3 Sets the range to 50kQ CONFigure F REQuency Sets measurement to Frequency on the first display and specifies the range Parameter None Range lt NRf gt MIN MAX DEF Example CONF FREQ MAX Sets the frequency measurement range to max 117 GW INSTEK GDM 834X Series User Manual CONFigure PERiod Sets measurement to Period on the first display and specifies the range Parameter None Range lt NRf gt 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 Parameter None CONFigure DIODe Sets measurement to Diode on the first display Parameter None CONFigure TEMPerature TCOuple Sets measurement to Temperature thermocouple T CUP on the first display Parameter None K T Example CONF TEMP TCO J Sets the measurement mode to TCO with a type J sensor CONFigure CAPacitance Sets measurement to Capacitance on the first display Parameter None Range lt NRf gt MIN MAX DEF Exam
28. 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 Procedure 1 Select ACV or DCV measurement See page 33 2 Press SHIFT Q key to activate the dB measurement mode The 1st display shows the dB reading the second display shows the voltage reading Display dB Voltage measurement reading DC 5 d 1 q 3313 JUDI v LI tit ICa View the dBm To view the dBm reference value press the Reference Value 2ND key The Up and Down arrow keys can also be used to change the voltage range or the reading Exit dB Press the SHIFT key again to exit the Measurement dB measurement or simply activate another measurement function 65 GW INSTEK 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 Applicable The Max Min function can be used with the measurements following basic measurement functions ACV DCV ACI DCL Hz P TEMP Procedure For Max measurement press the MX MN key once For Min measurement press the MX MN key twice Display Basic meas Max Min X Measurement function indicator range 4 AUTO E IMETI A III View Max Min Press the 2ND key to view the Max or Min Value value Display Max Min Max Min reading
29. is lined up with the arrow on the fuse holder Insert the fuse socket 145 GW INSTEK GDM 834X Series User Manual Replacing the Input Fuse Fuse Rating Type Rating 0 5 0 5A 250V N Only replace the fuse with a fuse of the correct type Note and rating Steps 1 Turn the DMM off 2 Press the fuse holder with your finger and turn anticlockwise This will release the fuse holder from the panel lt wr 46 146 GW INSTEK APPENDIX 3 Replace the fuse at the end of the holder with the correct type and rating yt Sae BS 609 oN ui Z 4 Push the fuse holder back into the panel and turn clockwise when the fuse holder is level with the front panel 147 GW INSTEK GDM 834X Series User Manual Status system The diagram below is a description of the status system Questionable Data Binary Wieghts Event Register Enable Register J 1 2 256 0 Voltage Overload 2 2 2 512 1 Current Overload 2 4 2 1024 Not Used B 8 2 2048 Not Used 2 16 D 4096 Not Used Not Used 2 128 2 32768 Not Used Not Used 6 ENTE m Status Byte Summary Register Enable Register 11 Limit Test Fail LO 12 Limit Test Fait HI Motun 13 NotUsed Not Used 4 3 5 Not Used n Questionable Data
30. mode AC AUTO 5 m M 1 FA Incr 1 N ty Deactivate Hold the MX MN key for two seconds to Max Min deactivate or simply activate another Measurement measurement function 66 GW INSTEK 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 Applicable The relative function can be used with the measurements following basic measurement functions ACV DCV ACI DCI Hz P TEMP 4 Procedure Press the REL key The measurement reading at that instant becomes the reference value Display Relative value AC REL Range View Relative Press the 2ND key to view the relative reference Reference Value value at full scale Display Relative reference value IL ag gr It tay pm r 67 GW INSTEK GDM 834X Series User Manual Manually Set the 1 Relative Reference Value To manually set the relative reference value press SHIFT REL The REL value is displayed on the screen at full scale Use the Left and Right arrow keys to navigate to the digit to be edited or to select the decimal point Use the Up and Down arrow keys to edit the selected digit or to place the position of the decimal point Press the Enter key to confirm alternatively
31. on INPut IMPedance AUTO Returns the input impedance mode Return parameter lt Boolean gt 0 1 O OFF 10M 1 ON 10G 137 GW INSTEK 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 Example STAT PRES 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 SYSTem RWLock Enables remote control and disables local control front panel control This command is analogous to the SYSTem REMote command GW INSTEK COMMAND OVERVIEW IEEE 488 2 Common Commands CLS Clears the Event Status register Output Queue Operation Event Status Questionable Event Status Standard Event Status Returns the ESER Event Status Enable Register contents Example ESE gt 130 Returns 130 ESER 10000010 ESE Sets the ESER contents Parameter lt NR1 gt 0 255 Example ESE 65 Sets the ESER to 01000001 ESR Returns SESR Standard Event Status Register contents Example ESR 2198 Returns 198 SESR 110
32. place of any numerical parameter where indicated For queries it will return the lowest possible value allowed for the particular setting MAX Optional For commands this will set the parameter setting to the highest value This parameter can be used in place of any numerical parameter where indicated For queries it will return the highest possible value allowed for the particular setting Automatic The GDM 8342 8341 automatically sets the parameter range command parameter to the next available value selection Example conf volt dc 1 This will set the measurement item to DC Voltage and the range to 5V There is no 1V range so the DMM selects the next available range 5V Message Remote Marks the end of a command Terminator EOL Command line The following messages are in accordance with IEEEA488 2 standard LF CR CR LF The most common EOL character is CR LF 109 GW INSTEK GDM 834X Series User Manual Return CR LF Message Message EOL Command Separator Separator semicolon 110 GW INSTEK COMMAND OVERVIEW Command List Configure Commands Display 1 116 116 116 1
33. stabilize the unit to match the specifications The measured voltage does not match the expected value There are a number of reasons why the measured value may not match the expected values 1 Ensure that all connections are connected securely and have a good contact at all times Poor contacts could result in erroneous measurements 2 Ensure that the appropriate input resistance has been set in the System menu For 500mv and 5V ranges the input resistance can be set to either 10 or 1060 3 When measuring AC voltage or current the RMS of the voltage peak is measured not the voltage peak See page 37 for details 4 The measurement rate settings can have an effect on the accuracy of the measurement Slow measurements are more accurate while the fast rate is not as accurate 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 GWInstek at www gwinstek com marketing goodwill com tw 142 GW INSTEK APPENDIX DIX System Menu Tree LEVEL 1 SYSTEMk MEAS k ty TEMP VO k J4USBSTO GDM8343 only LEVEL 2 30 GDM 8342 only LEVEL 2 SENSOR SIM UNIT J 23 00 TYPE K GDM
34. 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 Range LANG NORM COMP Procedure 1 Press the MENU Key 2 Go to SYSTEM on level 1 3 Go to LANG on level 2 4 Set the LANG setting to either NORM normal mode or COMP compatibility mode 5 Press the Enter key to confirm 6 Press the EXIT key to exit from the LANG menu Display LANG setting 81 GW INSTEK 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 Procedure 1 Press the MENU key 2 Go to SYSTEM on level 1 3 Go to FACTORY on level 2 4 Set the FACTORY DEF setting to YES or NO Choosing YES will restore the factory default settings 5 Press the Enter key to confirm and to restore the factory default settings immediately Display Factory default setting He INLI 82 GW INSTEK USB STORE Usp STORE The GDM 8342 is able to save log measurement results to a USB stick 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 834
35. the Up or the Down key to select the range The AUTO indicator turns Off automatically If the appropriate range is unknown select the highest range Selectable Voltage Ranges A Note Range Resolution Full scale 500mV 10pV 510 00mV 5V 0 1mV 5 1000V 50V 1mV 51 000V 500V 10mV 510 00V 750V AC 100mV 765 0V 1000V DC 100mV 1020 0V For further details please see the specifications on page 149 N Note DC voltages with AC components cannot be accurately measured if the DC AC component exceeds the ADC dynamic range for the selected DC range Any voltage exceeding the ADC 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 GW INSTEK GDM 834X Series User Manual For example A C D 5V DC 5V Range OV 5V B E A B Input exceeds the ADC dynamic range C D The DCV offset causes the input to exceed the upper ADC dynamic range E The DCV offset causes the input to exceed the lower ADC dynamic range The DC voltage range should be manually selected when any of the following conditions are true e When DCV measurement is used e When the signals being measured contain both DC and AC components e When the amplitude of the AC component in the measured signal is higher or lower than the dynamic range of the range being currently selected by the auto range function Maximum DCV Selected DCV Rang
36. the light setting between 1 dim and 5 bright 5 Press the Enter key to confirm 6 Press the EXIT key to exit from the brightness settings Display Brightness setting 78 GW INSTEK SYSTEM DISPLAY CONFIGURATION Input Resistance Settings The 500mV and 5V DC voltage ranges can be set to an input resistance of 10 or 10GQ This setting is only applicable for DC voltage Range Input resistance 10MO 10GQ Default Procedure 1 Press the MENU key 2 Go to MEAS on level 1 3 Go to INPUT R on level 2 4 Set the input resistance to 10 or 10GQ 5 Press the Enter key to confirm 6 Press the EXIT key to exit from the input resistance menu Display Input resistance setting 1 PA 79 GW INSTEK 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 Procedure 1 Press the MENU key 2 Go to MEAS on level 1 3 Go to INJACK on level 2 4 Set the INJACK setting to either VOLT 500mA or 10A 5 Press the Enter key to confirm 6 Press the EXIT key to exit from the INJACK menu Display INJACK setting GW INSTEK 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
37. 00 50 00 C SENSe DETector RATE Sets the detection rate sample rate Parameter RATE S M F Example SENS DET RATE S Sets the rate to slow S SENSe DETector RATE Returns the sample rate Return parameter SLOW MID FAST 127 GW INSTEK GDM 834X Series User Manual SENSe FREQuency I NPutjack Assigns an input terminal for the frequency function Parameter 0 1 2 O volt 1 500mA 2 10 Example SENS FREQ INP 0 Sets the input jack to the Volt input terminal SENSe FREQuency I NPutjack Returns the assigned input terminal used for the frequency function Return Parameter VOLT 500mA 10A SENSe PERiod I N Putjack Assigns an input terminal for the period function Parameter 0 1 2 0 volt 1 500mA 2 10 Example SENS PER INP 0 Sets the input jack to the Volt input terminal SENSe PERiod I N Putjack Returns the assigned input terminal used for the period function Return Parameter VOLT 500mA 10A SENSe CONTinuity THReshold Sets the continuity threshold in ohms Parameter lt NRf gt 0 1000 Example SENS CONT THR 500 Sets the continuity threshold to 500 SENSe CONTinuity T HReshold Returns the continuity threshold 128 GW INSTEK 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 fu
38. 00110 IDN Returns the manufacturer model No serial number and system version number Example IDN gt GWInstek GDM8342 00000000 1 0 OPC 1 is placed in the output queue when all the pending operations are completed 139 GW INSTEK GDM 834X Series User Manual OPC Sets operation complete bit in SERS Standard Event Status Register when all pending operations are completed PSC Returns power On clear status Return parameter lt Boolean gt 0 1 07 don t clear 1 clear PSC Clears power On status Parameter lt Boolean gt 0 1 0 don t clear 1 clear RST Recalls default panel setup SRE Returns the SRER Service Request Enable Register contents SRE Sets SRER contents Parameter lt NR1 gt 0 255 Example SRE 7 Sets the SRER to 00000111 STB Returns the SBR Status Byte Register contents Example STB gt 81 Returns the contents of the SBR as 01010001 TRG Manually triggers the DMM 140 GW INSTEK COMMAND OVERVIEW For the following command sets please refer to the status system diagram on page 148 STAT QUES EVEN STAT QUES ENAB STAT QUES ESR ESE ESE STB SRE SRE 141 GW INSTEK GDM 834X Series User Manual AQ 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
39. 01 User Manual CD 82DM 83421M01 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 Temperature Probe Adapter with Thermal Coupling K type Download Name Description gdmvcp inf In GDM 834X USB driver USB DRIVER ZIP GDM 834x Excel Addins Data logging Excel Add In logs measurements to a PC by remote control via the USB interface only This Excel Add In can t be used via the GPIB interface GW INSTEK GETTING STARTED Package Contents Check the contents before using the instrument Opening the box Contents e Main unit Power cord x1 region single unit e Test leads red x1 dependent black x1 e User manual CD USB cable x1 e Safety instruction sheet 13 GW INSTEK GDM 834X Series User Manual Appearance GDM 8342 8341 Front Panel Main DC AC 0 5A Terminal Display AMPS Fuse Holder VQ e Terminal COM Terminal DC AC 12A Terminal Power Switch USB Host Function keys and port GDM 8342 only Arrow keys Power Switch POWER Turns On E or Off RM the main power For the power up sequence see page 25 USB Host Port lt The Host port is type A USB port for logging data See the USB Store chapter for more details page 83
40. 05 5 Input protection of 500V peak Open circuit voltage approximates 6V Continuity Accuracy Range Resolution Full Scale Test Current 1 year 23 C 5 5000 00 100mQ 5100 0 0 83mA 0 19645 Input protection of 500V peak Open circuit voltage approximates 6V GW INSTEK APPENDIX Capacitance Accuracy Range Resolution Full Scale Test Current 1 year 23 C 5 1 5nF 0 5 1nF 2 2 096420 sn l saep 0901 5 100 8 3pA 20D 50nF 5 10nF 2 2 096430 50 10 50 299 2 0 10 500nF 0 1nF 510 0 83pA 5pF 5 100 0 56mA 2 0 4 50pF 10nF 51 00 0 83mA 1 For the 5nF 50pF range make sure that the input is greater than 1096 of the range 2 Need to use the REL function Input protection of 500V peak on all ranges Frequency Measurement Range Accuracy 1 year 23 C 5 10Hz 500Hz 0 01 5 500Hz 500kHz 0 01 3 AC DC measurements do not allow frequency measurements Input protection of 1000V peak on all ranges Voltage Measurement Sensitivity Minimum Sensitivity RMS sine wave Range 10 100kHz 100K 500kHz 500mV 35mV 200 5V 0 25V 0 5V 50V 2 5V 5V 500V 25V uncal 750V 50V uncal Current Measurement Sensitivity Minimum Sensitivity RMS sine wave Range 30 20kHz 500pA 35pA 5mA 0 25mA 50mA 2 5mA 500mA 25mA 5A 0 25A lt 2kHz 10A 2 5A lt 2kHz 153 GW INSTEK GDM 834X Series User Manual Temperature Specifications
41. 111 GW INSTEK GDM 834X Series User Manual Measure Commands Sense Commands 112 MEASure VOLTage DC 123 123 MEASure VOLTage DCAC 123 MEASure CURRent DC 123 2 124 124 MEASure RESistance 124 124 124 2 125 5 125 MEASure TEM Perature TCOuple 125 MEASure2 VOLTage DC sss 125 2 125 MEASure2 CURRent DC 126 2 2 126 MEASure2 RESistance 126 MEASure2 FREQuenoy 126 2 4 126 SENSe TEMPerature TCOuple TYPE 127 SENSe TEMPerature TCOuple TYPE
42. 133 GW INSTEK GDM 834X Series User Manual TRIGger Commands READ Returns 1 and 2 display value VALT Returns the 1 display reading Example SAMP COUN 100 VAL1 gt 0 333E 4 V DC gt 0 389E 4 V DC gt etc for 100 counts Queries 100 counts of stored samples from the 1 display VAL2 Returns the 2 4 display reading Example SAMP COUN 100 VAL2 gt 0 345E 4 V DC gt 0 391E 4 V DC gt etc for 100 counts Queries 100 counts of stored samples from the 274 display 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 GW INSTEK 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 lt NR1 gt 1 9999 MIN MAX Example SAMP COUN 10 Sets the number of samples to 10 SAMPle COUNt Returns the number of samples Parameter None MIN MAX TRIGger COUNt Sets the number of trigger counts Parameter lt NR1 gt 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 135 GW INSTEK GDM 834X Series User
43. 16 CONFigure CURRent AC 117 CONFigure CURRent 117 515 117 CONFigure FREQuengy see 117 CONFigure PERiod eee 118 CONFigure CONTinuity sese 118 CONFigure DIODe esse 118 CONFigure TEMPerature TCOuple 118 CONFigure CAPacitance 118 CONFigure FUNCtion esee 118 CONFigure RANGe sss 119 CONFigure AUTO eee 119 2 119 Configure Commands Display 2 2 119 2 120 2 120 2 120 2 120 2 121 2 121 CONE niente enters 121 CONFigure2 FUNCtion sss 121 CONFigure2 RANGe ssssssseeee 122 2 20 0 122 2 202 2 0 221 122
44. 32 Recommended Max memory size 32GB Max record count a recording 5 000 000 records N Note Flash disks which need to use card adaptors are not recommended to be used in this application CSV Format Overview The GDM 8342 saves readings as a CSV file comma separated values that can be easily read using spreadsheet programs such as Microsoft Excel Each CSV file saves the following information Parameters Time dd The elapsed number of days since the start of the readings Time hh mm ss The elapsed time since the start of the readings in hours minutes seconds formatting 15 Value The reading on the primary display 84 Gwin STEK USB STORE Ist 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 The count is restarted each time measurement is restarted When a measurement is started restarted the first count is marked as START the last as END Note Records the accumulative number of readings that are recorded in that file up to the maximum of 50 000 Example Time dd Time 1st Value 1st Unit 2nd 2nd Count Note hh mm ss Value Unit 0 0 00 05 0 00E 00 V DC START 00012 0 0 00 06 0 00 00 V DC 2 00002 0 0 00 06 0 00E 00 V DC 00032
45. 8342 only LEVEL 2 CONT INJACK INPUT R 0010 VOLT 10M 500mA 10G 10A LEVEL2 BEEP VER LIGHT SN LANG 55 Vxxx 12345678 NORM FAIL LIGHT 2 COMP YES OF LIGHT 3 LIGHT 4 LIGHT 5 LEVEL 2 MODE RECORD TIMER DATE SIMPLE NORMAL 00 00 00 13 03 01 ADVANCE LONG Pressing Shift Menu _ FILE JNAME JCOUNT TMODE TIMER GDM 8342 only 143 GW INSTEK GDM 834X Series User Manual Factory Default Settings Measurement Item DCV Range AUTO Rate 5 SYSTEM Menu BEEP Pass VER N A LIGHT 3 S N N A LANG NORM FACTORY NO MEAS Menu CONT 0010Q INJACK VOLT INPUT R 10M TEMP Menu SENSOR TYPE J SIM 23 00 UNIT 1 0 Menu USB BAUD 115200 GPIB OFF USBSTO Menu MODE SIMPLE RECORD NORMAL TIMER 00 00 00 DATE 13 03 01 GW INSTEK APPENDIX Replacing the AC Source Fuse Fuse Ratings Type Rating 0 125AT 100VAC 120VAC 0 063AT 220VAC 240VAC N Only replace the fuse with a fuse of the correct type Note and rating Steps 1 Turn the DMM off and take out the power cord 2 Remove the fuse socket using a flathead screwdriver PE 3 Remove the fuse in the holder and replace with the correct type and rating 4 Ensure the correct line voltage
46. AC current measurement on the second display Parameter None Range lt NRf gt MIN MAX DEF Example MEAS2 CURR AC gt 0 387E 2 Returns the AC current measurement MEASure2 RESistance Returns the 2W resistance measurement on the second display Parameter None Range lt NRf gt MIN MAX DEF Example MEAS2 RES gt 1 1912 3 Returns the 2W measurement MEASure2 FREQuency Returns the frequency measurement on the second display Parameter None Range lt NRf gt MIN MAX DEF Example MEAS2 FREQ gt 2 3712E 2 Returns the frequency 237 12Hz MEASure2 PERiod Returns the period measurement on the second display Parameter None Range lt NRf gt MIN MAX DEF Example MEAS2 PER MAX Returns the period at the maximum range 126 GW INSTEK COMMAND OVERVIEW SENSe Commands SENSe TEMPerature TCOuple TY PE Sets thermocouple type Parameter Type J K T Example SENS TEMP TCO TYPE J Sets the thermocouple to type J SENSe TEMPerature TCOuple TY PE Returns the thermocouple type Return parameter J K T SENSe TEMPerature RJUNction SIMulated Set temperature simulation value Parameter lt NRf gt 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 40000 5000 where 0000 0 00 C 50
47. B STORE Note About Deleting Files or Directories on the USB Stick Note Overview If you find the need to delete files or directories 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 directory and last log file GWXXX XX CSV in that directory when saving log files it is imperative that the file directory structure and the files within the directories remain continuous or files may be stored to the wrong directory or data may be added to the wrong log file Suggestions When Deleting Directories or Log Files Only delete the last directories do not delete directories before the last remaining directory For example the following directories are on the USB stick GW000 GW001 GW002 GW003 004 GW005 Recommended Delete the last directories GW000 GW001 GW002 GW003 GW004 GW005 Not recommended Deleting any directories before the last directory GW000 GW004 GW002 GW003 GW004 GW005 Only delete the last log files do not delete any log files before the last remaining log file For example the following log files are ina directory GW000 00 CSV GW000 01 CSV GW INSTEK GDM 834X Series User Manual 100 GW000 02 CSV Recommended Deleting only the last files or all the files from a directory GW000 00 CSV GW000 04 CSV GW000 02 CSV OR
48. CAL 2ND key when in remote mode 2 The unit will go back into local mode and the RMT icon will turn off Display Remote control indicator AUTO RMT 7 ri r1 oot i 09999 105 GW INSTEK GDM 834X Series User Manual Com MAND 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 Compatible 1 488 2 Partial compatibility Standard SCPI 1994 Partial compatibility Command SCPI Standard Commands for Programmable Structure Instruments commands follow a tree like structure organized into nodes Each level of the command tree is a node Each keyword in a SCPI command represents each node in the command tree Each keyword node of a SCPI command is separated by a colon For example the diagram below shows an SCPI sub structure and a command example CONFigure CONFigure VOLTage DC VOLTage DC DCAC 106 GW INSTEK COMMAND OVERVIEW Command types There are a number of different instrument 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 Simple A single command with without a parameter Example CONFigure VOLTage DC Query A query is a simple or compound command followed by a q
49. CONFigure2 OFF Turns the second display function off Parameter None CONFigure2 FUNCtion Returns the current function on the second display Return parameter VOLT VOLT AC CURR CURR AC RES FREQ PER NON 121 GW INSTEK 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 0 0005 500 0 005 5mA 0 05 50mA 0 5 500mA 5 5 10 10A DCI 0 0005 500 0 005 5mA 0 05 50mA 0 5 500mA 5 5 10 10A RES 50 1 5000 50E 2 5kQ 50E 3 50kQ 50E 4 500kQ 50E 5 5MQ 50E 6 50MQ CONFigure2 AUTO Sets Auto Range on or off on the 2nd display Parameter ON OFF Example CONF2 AUTO ON CONFigure2 AUTO Returns the Auto Range status of the function on the 2nd display Return Parameter 0 1 1 Auto range 0 Manual range 122 GW INSTEK COMMAND OVERVIEW Measure Commands MEASure VOLTage DC Returns the DC voltage measurement on the first display Parameter None Range lt NRf gt MIN MAX DEF Example MEAS VOLT DC gt 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 lt NRf gt MIN MAX DEF Example MEAS VOLT AC gt 0 511E 3 Returns the AC v
50. CV DCV ACI DCL O Hz P TEMP Overview of Math Functions Measure MX B MX B Multiplies the reading X by the factor M and adds subtracts offset B 1 Inverse Divides 1 by the reading 9 Percentage Runs the following equation ReadingX Reference Reference x 10096 Procedure 72 1 Press SHIFT MX MN to enter the MATH menu The MX B setting appears The M factor will be flashing indicating that the M factor is to be set Use the Left and Right arrow keys to navigate to the digit to be edited or to select the decimal point Use the Up and Down arrow keys to edit the selected digit or to place the position of the GW INSTEK 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 Display MX B meausurement math reading indicator oc AUTO 5 L 4 Deactivate Math Press SHIFT MX MN to deactivate the Measurement MATH function or simply activate another measurement function Measure 1 X Procedure 1 Press SHIFT MX MN to enter the MATH menu The MX B setting appears 2 Press the Down key twice to skip past MX B settings and go to the 1 X settings 1 X will be flashing in the secondary dis
51. CW2O000 00 CSV GWO000 01 CSV GWOOO 02 CSV Not recommended Deleting any file before the last file GW000 00 CSV GW000 01 CSV GW000 02 CSV GW INSTEK REMOTE CONTROL REMOTE 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 1 102 USB Interface 102 GPIB Interface 103 Return to Local 1 105 101 GW INSTEK 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 toa connected PC Any terminal program that can communicate via a serial port can be used for remote control Before the DMM can be used for remote control the USB driver included on the User Manual CD must first be installed USB PC connector Type A host figurati ME DMM connector Rear panel Type B slave Speed 1 1 2 0 full speed high speed Selectable baud rate 9600 19200 38400 57600 115200 Parity None Hardware flow Off control Data Bits 8 Stop bit 1 Steps 1 Connect the USB cable to the rear panel type B USB port 2 Press MENU 3 Go to I O on level 1 4 Go to USB on level 2 5 Set the baud rate to an applicable rate 102 GW INSTEK
52. Dual Measurement Multimeter GDM 834X Series USER MANUAL GW INSTEK PART NO 82DM 83420E01 150 9001 CERTIFIED MANUFACTURER GW INSTEK 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 Good Will Instrument Co Ltd No 7 1 Jhongsing Rd Tucheng Dist New Taipei City 236 Taiwan GW INSTEK Table of Contents Table of Contents SAFETY 5 5 GETTING STARTED ii eere ere e 10 Characteristics ioo 11 Appearance tado EE Eve daas 14 r1 24 OPERATION 352 29 Basic Measurement Overview 31 AC DC Voltage Measurement 33 AC DC Current Measurement 39 Resistance 43 Diode Teste Pee 45 Capacitance Measurement 46 CONTINUITY Te5t iier treten eee eorr eas 48 Frequency Period Measurement 5 Temperature Measurement
53. Procedure 1 Press the MENU key 2 Go to USBSTO on level 1 3 Go to TIMER on level 2 4 Set TIMER time between 00 00 00 and 23 59 59 5 Press the Enter key to confirm 6 Press the EXIT key to exit from the TIMER menu Displa pay Timer setting 2 1 2 I E 94 GW INSTEK USB STORE Date Range Date 13 03 01 99 12 31 Year Month Day Default 13 03 01 Overview The date setting sets the date stamp for any CSV files that are saved N 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 The GDM 8342 will not update the date setting automatically this must be done manually by the user Procedure 1 Press the MENU Key 2 Go to USBSTO on level 1 3 Goto DATE on level 2 4 Set the DATE The format for the date is Year Month Day 5 Press the Enter key to confirm 6 Press the EXIT key to exit from the DATE menu Date menu Display Date setting indicator GW INSTEK GDM 834X Series User Manual Save to USB Overview The USB STO option allows the GDM 8342 to 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 N When the GDM 8342 starts to save records to Note USB all buttons except for the SHIFT MENU 2ND and left and right arrow keys will be locked and di
54. 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 a v 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 GPIB GPIB Address 0 30 configuration Range Steps 1 Connect the GPIB cable to the rear panel GPIB port 2 Press MENU 3 Go to I O on level 1 Go to GPIB on level 2 5 Turn GPIB ON and press Enter to Confirm 6 The GPIB address settings will automatically appear after turning GPIB on Set the GPIB address N Press Enter to confirm the GPIB address setting 8 Press EXIT to exit from the System menu 103 GW INSTEK GDM 834X Series User Manual Display GPIB address setting 11 N Note GPIB Constraints 104 GPIB menu indicator nE ADDR e Maximum 15 devices 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 e Unique address assigned to each device No loop or parallel connections GW INSTEK REMOTE CONTROL Return to Local Control Background When the unit is in remote control mode the 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 Procedure 1 Press the LO
55. VAC 0 063AT For fuse replacement details see page 145 Reserved for calibration purposes For service technicians only Type B USB port This port is used for remote control 23 GW INSTEK 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 24 GW INSTEK GETTING STARTED Power Up Steps 1 Ensure the correct line 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 N Make sure the ground connector on the power Note cord is connected to a safety ground This will influence the measurement accuracy 3 Push to turn on the main power switch on the front panel 4 The display turns and shows the last function that was used before the power was reset 25 GW INSTEK GDM 834X Series User Manual How to Use the Instrument Background The following section will introduce to you how to access the basic functions on the DMM as well as how to navigate the menu system and the edit parameter va
56. X Series Excel Add In manual for details USB Store OVERVIEW 84 Supported USB 84 CSV nasties 84 Filename 85 Operator Mode serasi a 86 Long Record Mode ssssssssse eee 88 View the Store Function Status 89 Set the Starting File Name Available only in Advance Mode 91 Save Count Available only in Advance Mode 91 Save to an Existing File Available only in Advance Mode 92 Time Mode Available only in Advance Mode 93 Mug 93 Dru cp 95 Save to USB tae nette dpt 96 Save to USB Simple 96 Save to USB Advance Mode 97 Note About Deleting Files or Directories on the USB Stick e Mere 99 83 GW INSTEK 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 toa specified number of reading counts as well as the option to continue saving to a previously stored file instead of saving to a new file Supported USB Sticks USB Disk Type Flash Disk Only FAT Format Fat16 or Fat
57. ay Procedure 1 Toggle whether the primary or secondary display is the active display by pressing the 2ND key Primary display is the active display 2ND is not visible on the display Secondary display is the active display 2ND is visible on the display N Do not hold the 2ND key This will turn the dual Note measurement mode off 2 Edit the range rate or measurement item for the active display in the same way as for single measurement operation See the Basic Measurement chapter for details page 31 Turn Off 2nd To turn Off the 2nd measurement press and Measurement hold the 2nd key for more than 1 second 59 GW INSTEK GDM 834X Series User Manual Connection The diagrams below describe how to connect the DMM to measure a number of common dual measurement items Voltage and Frequency Period measurement A 500Vpk COM MAX AAA 60 GW INSTEK OPERATION Voltage Frequency Period and Current Measurement m INPUT J MAX 77 800Vpk COM 1 NAA I x p eje m Hi 0 0 5A IJH 11 id Note
58. d EN 61326 2 1 laboratory use EMC requirements 2006 Conducted amp Radiated Emission Electrostatic Discharge EN 55011 2009 A1 2010 EN 61000 4 2 2009 Current Harmonics Radiated Immunity EN 61000 3 2 EN 61000 4 3 2006 A1 2009 A2 2009 2006 A1 2008 A2 2010 Voltage Fluctuations Electrical Fast Transients EN 61000 3 3 2008 TEC 61000 4 4 2004 A1 2010 Surge Immunity 61000 4 5 2006 onducted Susceptibility N 61000 4 6 2009 ower Frequency Magnetic Field N 61000 4 8 2010 oltage Dip Interruption 61000 4 11 2004 mo m Jg lt Low Voltage Equipment Directive 2006 95 Safety Requirements EN 61010 1 2010 EN 61010 2 030 2010 156 GW INSTEK INDEX 2 02 12 41 Advanced measurement setting ne 39 compare Declaration of conformity 156 Diode Display overview Disposal instructions 8 Dual measurement amp eret 57 OVerVieW 57 EN61010 measurement category 6 Percentage pollution 8 relative ioi deter 67 Environment supported functions 62 safety instruction sss 7 Brightness level 78 Factory default settings Cancel r
59. e ADC Dynamic Range Dynamic Range 500mV max 100mV DC5V max 1V DC 50V max 10V DC 500V max 100V DC 1000V max 1000V 36 OPERATION GW INSTEK Voltage Conversion Table This table shows the relationship between an AC and DC reading for various waveforms Waveform Peak to Peak True RMS DC Sine 2 828 1 000 0 000 N PK PK Rectified Sine full wave 1 414 0 435 0 900 Rectified Sine half wave 2 000 0 771 0 636 ff PK PK Square 2 000 1 000 0 000 PK PK Rectified Square 1 414 0 707 0 707 PK PK Rectangular Pulse 2 000 2K 2D K J D D X PK PK D x Y D X Y cY Triangle Sawtooth 3 464 1 000 0 000 NE 37 GW INSTEK GDM 834X Series User Manual Crest Factor Table Background Crest factor is the ratio of the peak signal 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 If the crest factor is more than 3 0 it usually indicates an abnormal waveform as seen from the below table Crest Factor Table Waveform Shape Crest factor Square wave 1 0 Sine wave 1 414 Triangle sawtooth 1 732 Mixed frequencies MANA 1414 20 SCR output 100 10 1 414 3 0 White noise 3 0 4 0 AC Coupled pulse train gt 3 0 Spike GW INSTEK OPERATION AC DC Current Measure
60. e Units Range Units C F Procedure 1 Press the MENU key 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 6 Press the EXIT key to exit from the temperature menu Display Temperature Unit menu unit setting indicator 54 GW INSTEK 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 and range Type Measurement Range Resolution 200 to 300 C 0 1 C 200 to 300 C 0 1 C 200 to 300 C 0 1 C Procedure Display Press the MENU key Goto TEMP on level 1 Go to SENSOR on level 2 Press the Enter key to confirm menu Thermocouple type setting e J Iv 11 L Sensor menu indicator 29 Select the thermocouple type J K Press the EXIT key to exit from the temperature 55 GW INSTEK 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 junct
61. emote control 105 restore 82 Capacitance Factory default settings 144 TAGE 47 Frequency cogo oa ORA 46 SeLUng mco on nO ERE A OH 51 Caution symbol 5 Frequency Period input jack Cleaning the instrument 7 Settings semet 80 Command IEE488 2 commands139 Front panel diagram 14 Command set Fuse CALCulate commandis safety 1 7 CONFigure commandis Ground CONFigure2 commands 5 Measure commands Indicator Remote commands 32 SENSe commands Input jack 80 STATus report commandis 138 In put resistance 79 SYSTem related commands 136 TRIGger commands 134 Main features M 11 Compatibility settings 81 Marketing A COMAG eriseeria ineine 142 Continuity beeper ce 50 Menu 143 threshold sss 49 Package contents 13 Continuity Period setting 48 setting 51 Conventions 26 Power up 25 Current Rear panel 157 GW INSTEK GDM 834X Series User Manual OVETVICW 22 Refresh rate Remote control 101 Command list
62. entering this mode the system will set the Existing File setting to New File Count to Continu and Time Mode to Restart by default The system will then start to seek for the first available file name e g The first file name will usually start from GW000 if GW000 doesn t already exist If GW000 and GW001 exist already then GW002 would be the next available filename 86 GW INSTEK USB STORE Advance Mode Users can make detailed settings by themselves 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 and Date Setup Note that the settings that are available for the Advance mode are automatically available when you activate the USB Store function in the Advance mode See page 97 Procedure 1 Press the MENU key 2 Go to USBSTO on level 1 3 Go to MODE on level 2 4 Set MODE to SIMPLE or ADVANCE 5 Press the Enter key to confirm 6 Press the EXIT key to exit from the MODE menu Display Operator mode Operator mode setting menu indicator Ex 87 GW INSTEK GDM 834X Series User Manual Long Record Mode Overview If users need long term data records the Long Record Mode can be used to log test data for a long period of time I
63. essed in conjunction with the SHIFT key Upper Measurement keys DCV Measures DC Voltage page 33 DCV DCI Measures DC Current page SHIFT gt DCV E 39 EXIT ACI Measures AC Voltage page 33 ACV ACI ACI Measures AC Current page 5 gt 39 DCV ACV DCI Measures DC AC voltage DCI ACI Measures DC EXIT page 39 16 GW INSTEK GETTING STARTED Resistance Measures resistance or continuity Continuity depending on the selected mode See page 43 and 48 respectively dB Measures dB See page 65 dB shom Diode Tests diodes or measures Capacitance capacitance depending on the selected mode See page 45 and 46 respectively dBm ekiu Measures dBm See page 63 SHIFT Es NET Hz P TEMP Measures the frequency or period or a signal depending on the selected mode See page 51 TEMP Measures temperature See SHIFT gt Hz P us page 53 2NP As the 2nd key selects the measurement item on the 2nd display page 57 Pressing and holding for more than 1 second turns off the 2nd display 2ND As the Local key releases the remote control and returns the instrument to local panel operation page 105 7 GW INSTEK GDM 834X Series User Manual Lower Measurement keys REL REL REL REL SHIFT REL SHIFT EXIT MATH MX MN MX MN MATH
64. for the Hold function Parameter lt NRf gt 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 lt NRf gt MIN MAX Example CALC REL REF MAX Sets the reference value to the maximum allowed CALCulate REL REFerence Returns the reference value from the relative function CALCulate LIMit LOWer Sets the lower limit of the compare function Para meter lt NRf gt MIN MAX Example CALC LIM LOW 1 0 Sets the lower limit to 1 0 CALCulate LIMit LOWer Returns the lower limit of the compare function CALCulate LIMit UPPer Sets the upper limit of the compare function Para meter lt NRf gt MIN MAX Example CALC LIM UPP 1 0 Sets the upper limit to 1 0 131 GW INSTEK 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 lt NRf gt MIN MAX Example CALC DB REF MAX Sets the reference voltage for dB measurements to the maximum allowed CALCulate DB REFerence Returns the reference voltage from the dB function CALCulate DBM REFerence Sets the resistance value for the dBm function Parameter lt NRf gt MIN MAX Example CALC DBM REF MAX Sets the re
65. front panel 2 If the USB stick is recognized by the DMM the USB STO icon will be lit This indicates that the DMM is ready to save files to the USB stick 3 Press SHIFT MENU 4 Each Advance mode setting will now appear one after the other Set each option and press the Enter key to continue to the next option The following options will appear in order 97 GW INSTEK 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 The USB STO icon will flash slowly indicating the DMM is saving to USB 6 To stop saving to USB press SHIFT MENU again When the save operation has stopped the USB STO icon will stop flashing and will remain lit 7 The USB stick can now be removed or another save option can be performed Do not remove the USB stick while the DMM is WARNING saving to the USB drive N 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 filename suffix XX has reached its maximum value 99 and cannot be increased further Display Recorded USB STO Measurement icon 0 d Fa We 3 LI 3 98 GW INSTEK US
66. hat the voltage input level does not Guideline exceed DC1000V AC750V N Make sure the current input level does not CAUTION exceed 12A Do not place any heavy object on the instrument Avoid severe impact or rough handling that can lead to damaging the instrument Do not discharge static electricity to the instrument e Use only mating connectors not bare wires for the terminals Do not block or obstruct the cooling fan vent opening Do not perform measurement at the source of a low voltage installation or at building installations Note below Do not disassemble the instrument unless you are qualified as service personnel e Make sure that the COM terminal to earth is limited to 500Vpk Note EN 61010 1 2010 specifies the measurement categories and their requirements as follows The GDM 834X falls under category 1 600V e Measurement category IV is for measurement performed at the source of low voltage installation Measurement category 111 is for measurement performed in the building installation e Measurement category Il is for measurement performed on the circuits directly connected to the low voltage installation a GW INSTEK SAFETY INSTRUCTIONS Power Supply AC Input voltage 100 120 220 240 V AC N 50 60Hz WARNING The power supply voltage should not fluctuate more than 1096 Connect the protective grounding conductor of the AC power cord to an ear
67. he display will show OL over load on the display The specifications are guaranteed to an input of 10A A beeping alarm will go off when the input value is higher than 10A GW INSTEK APPENDIX AC Voltage ACV DCVp AC Coupled Full Accuracy 1 year 23 C 5 1 Range Resolution Scale 30 50Hz 50 10kHz 10 30 2 30K 100kHz 500 10pV 510 00 1 009640 0 50 40 2 00 60 3 00 120 5V 100pV 5 1000 1 00 20 0 35 15 1 00 20 3 00 50 50V ImV 51 000 1 00 20 0 35 15 1 009 20 3 00 50 500V 10 510 00 x 0 596 15 1 0096 20 2 3 00 50 2 750V 100mV 765 0 x 0 5 15 x x 1 Specifications are for sine wave inputs that are greater than 5 range 2 Input voltage lt 300Vrms 3 The accuracy of ACV DCV is equal to ACV s with 10 more digits added The specifications are guaranteed to an input of 750V A beeping alarm will go off when the input value is higher than 750V Input protection of 1000V peak on all ranges AC coupled true RMS measures the AC component of the input with up to 400Vdc of bias on any range AC Current ACI DCI 3 AC Coupled Resolu Full Accuracy 1 year 23 C 5 1 Burden Range Scale 30 50Hz 50 2 2 2K 5kHz 5 20 2 Voltage 500 10 510 00 1 50 50 0 50 40 1 509650 3 00 75 0 06 max 5mA 100nA 5 1000 1 50 40 0 50 20 1 50 40 3 00 60 0 6V max 50mA 51 000 1 50 40 0 50 20 1 50 40 3 00 60 0 14V max 500mA 1 0
68. he dual measurement function Supported Dual Primary Secondary Display Measurement Display ACV DCV ACI DCI Hz P Q modes ACV e e e e e X DCV X X ACI X DCI x x e X X Hz P 7 X X X Q X X X X X e 57 GW INSTEK GDM 834X Series User Manual Using Dual Measurement Mode Procedure 1 Choose one of the basic measurement functions 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 2 To set a measurement mode for the second display press the 2ND key and then select the second measurement mode For example press 2ND SHIFT ACV to select ACI measurement for the second display Display Indicators for 15 2nd measurement measurement and unit oc AUTO 5 d d F L 1 unnac Jot 110112 20 151 measurement Indicators for 2 and unit measurement GW INSTEK OPERATION Editing the After the secondary measurement function has 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 To edit measurement parameters in dual measurement mode you must first set which display is the active display The 2ND icon under the secondary display determines which display is the active displ
69. hen you access a menu or parameter setting or Parameter the Up Down Left and Right keys can be used again to edit the parameter as well RANGE e setting or parameter is flashing it indicates that that particular parameter can be edited e Pressing the Left or Right arrow key will allow you to select a digit or character to edit e Pressing the Up or Down keys will allow you to edit the selected character 28 GW INSTEK OPERATION Operation Basic Measurement 31 Refresh Rate cient ferte 31 Reading Indicator 31 Automatic Manual Triggering sess 32 AC DC Voltage Measurement 33 Select the Voltage Range 35 Voltage Conversion 37 Crest Factor Table 5e e repere 38 AC DC Current 39 Select the Current Range sse 41 Resistance Measurermieriti iiie ceci bennekutbecede ude use des 43 Select the Resistance Range 44 PIDDIMDI M 45 Capacitance 46 Select the Capacitance 47 C ntin ity TSO EOS Pier era P 48 Set Contin
70. ich is coloured Green amp Yellow must be connected to the Earth terminal marked with either the letter E the earth symbol 5 or coloured Green Green amp Yellow The wire which is coloured Blue must be connected to the terminal which is marked with the letter N or coloured Blue or Black The wire which is coloured Brown must be connected to the terminal marked with the letter L or P or coloured Brown or Red If in doubt consult the instructions provided with the equipment or contact the supplier This cable appliance should be protected by a suitably rated and approved HBC mains fuse refer to the rating information on the equipment and or user instructions for details As a guide a cable of 0 75012 should be protected by a or 5A fuse Larger conductors would normally require 13A types depending on the connection method used Any exposed wiring from a cable plug or connection that is engaged in a live socket is extremely hazardous If a cable or plug is deemed hazardous turn off the mains power and remove the cable any fuses and fuse assemblies All hazardous wiring must be immediately destroyed and replaced in accordance to the above standard GW INSTEK GDM 834X Series User Manual G 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 M
71. ion temperature should be determined by the user Range SIM 0 50 C default 23 00 C Resolution 0 01 C Procedure 1 Press the MENU key 2 Go to TEMP on level 1 3 Go to SIM on level 2 4 Set the SIM simulated reference junction temperature 5 Press the Enter key to confirm 6 Press the EXIT key to exit from the temperature menu Display Reference junction SIM menu temperature setting indicator CIM 1 13H Jiu C LI 56 GW INSTEK 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 If the primary and secondary measurement modes have the same range rate and rely on the same fundamental measurement then a single measurement is taken for both displays such as ACV and frequency period measurements If the primary and secondary displays use different measurement functions ranges or rates then separate measurements will be taken for each display For example ACV and DCV measurements Most of the basic measurement functions except for resistance continuity can be used in the dual measurement mode Supported dual measurement modes The following table lists all the measurement functions that are supported with t
72. lues Using the Any of the primary functions can be used by Function keys simply pressing the desired function key For example To activate the DCV function press the DCV key DCI DCV To activate a secondary function first press the SHIFT key followed by the function key for the secondary function For example To activate DCI measurement first press the SHIFT key SHIFT will be highlighted on the display Next press the DCV function key This will activate the DCI mode DCI SHIFT EXIT gt GW INSTEK GETTING STARTED Navigating the The menu system is navigated with the Up Menu System Down Left and Right arrow keys the Auto Enter key and the SHIFT EXIT key RANGE SHIFT RANGE To enter the menu system press the MENU key See page 143 for the System Menu tree USB STO MENU e Pressing the Left and Right arrow keys will navigate to each of the menu items on the current menu level e Pressing the Down key will go down to the next level of the menu tree e Conversely pressing the Up key will allow you to go back to the previous menu level e Pressing Down or Enter on the last item in menu tree will allow you to edit the settings or parameters for that particular item or setting e Pressing the Exit key will allow you to exit from the current settings and return to the previous menu tree level 27 GW INSTEK GDM 834X Series User Manual Editing a Setting W
73. ment 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 Set to ACI DCI 1 Press SHIFT or SHIFT ACV to Measurement measure DC or AC current respectively For AC DC current press SHIFT followed by both the DCV and ACV key at the same time 2 The mode will switch to AC DC or AC DC mode immediately as shown below A AC amp DC Current Measurement indicator units range di AUTO 5 C 1 5 H t IIL ll Li Connection Connect the test lead between the 10A terminal and the COM terminal or DC AC 0 5A terminal and the COM terminal depending on the input current For current lt 0 5A use the 0 5A terminal For current up to 12A use the 10A terminal The display updates the reading 39 GW INSTEK GDM 834X Series User Manual VEL XEN Max 0 5A GW INSTEK OPERATION Select the Current Range The current range can be set automatically or manually Auto Range To turn the automatic range selection On Off press the AUTO key Manual Range Press the Up or the Down key to select the range The AUTO indicator turns Off automatically If the
74. ment The GDM 8342 8341 can be used to measure the frequency or period of a signal Range Frequency 10Hz 500kHz Period 2 0us 100ms Procedure To measure frequency press the Hz P key once FREQ will be displayed on the secondary display To measure the period press the Hz P key twice PERIOD will be displayed on the secondary display Display Frequency Measurement Measurement units mode AUTOS by FRET RE F E Litt tt Connection Connect the test lead between the VO r 4t terminal and the COM terminal The display updates the reading INPUT CAT 600V 51 GW INSTEK GDM 834X Series User Manual Frequency Period Voltage Range Settings The input voltage range for frequency period measurements can be set to Auto range or to manual By default both the period and frequency voltage range are set to Auto Range Voltage 500 5V 50 500 750V Manual Range 1 When in the PERIOD or FREQ measurement mode press the 2ND key twice This will allow the secondary display to show the voltage range Set the range with the Up and Down keys The AUTO indicator will turn off when a new range is selected Press the 2ND key twice more to switch the secondary display back to the previous view Autorange 1 Pre
75. n this mode the Rate is set by the system to the slow rate and the refresh rate is set to 1 data refresh per second excluding dual measurement ACI DCI and ACV DCV modes Normal The Normal setting is the regular record mode The longest recordable time depends on the refresh rate that is chosen the longest recordable time in seconds equals 5 000 000 refresh rate Long In the long record mode a fixed record speed of one record per second will be logged into the log file the longest recordable time is 5 000 000 seconds Procedure 1 Press the MENU key 2 Go to USBSTO on level 1 3 Go to RECORD on level 2 4 Set RECORD to NORMAL or LONG 5 Press the Enter key to confirm 6 Press the EXIT key to exit from the MODE menu GW INSTEK USB STORE Display Operator mode Operator mode setting menu indicator View the Store Function Status Overview The USB Status menu can be used to check the 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 USB Store Status ELTIME Displays the elapsed time from Items when the USB store function was started Format HHH MM SS COUNT Displays the number of readings that have been logged for the current operation STATUS Displays the USB Store function status These statuses include 1 START indicates that the function has been started 2 STOP indica
76. nction 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 display2 VOLT DC VOLT AC CURR DC CURR AC RES FREQ PER NON Example SENS FUNCI VOLT DC Sets the 1 display to the DCV function SENSe FUNCtion 1 2 Returns the function displayed on the first or second display Return parameter display 1 VOLT VOLT AC VOLT DCAC CURR CURR AC CURR DCAC RES FREQ PER TEMP TCO DIOD CONT CAP display 2 VOLT VOLT AC CURR CURR AC RES FREQ PER NON 129 GW INSTEK 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 CALCulate STATe Turns the Advanced function on off Parameter ON OFF Example CALC STAT OFF Turns the Advanced function off CALCulate STATe Returns the status of the Advanced function Return Parameter 0 1 1 ON 02OFF CALCulate MINimum Returns the minimum value from the Max Min measurement CALCulate MAXimum Returns the maximum value from the Max Min measurement GW INSTEK COMMAND OVERVIEW CALCulate HOLD REFerence Sets the percentage threshold
77. o manually trigger acquisition when the trigger mode is set to EXT Manual Trigger 1 Press SHIFT TRIG to toggle the trigger mode to EXT 2 Press the TRIG key to manually trigger each measurement when in EXT trigger mode N Manual triggering is not supported for capacitance Note measurements GW INSTEK 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 Set to ACV DCV 1 Press the DCV or ACV key to measure DC or Measurement AC voltage For AC DC voltage press the ACV and DCV keys at the same time 2 The mode will switch to AC DC or AC DC mode immediately as shown below AC amp DC Voltage Measurement indicator units range LDOngdge gt z DEn Connection Connect the test lead between the V and the COM terminal The display updates the reading 33 GW INSTEK GDM 834X Series User Manual n 3 EN ee 250V D 2 27 IEA res 34 GW INSTEK OPERATION Select the Voltage Range The voltage range can be set automatically or manually Auto Range To turn the automatic range selection On Off press the AUTO key Manual Range Press
78. oltage measurement as 0 511 mV MEASure VOLTage DCAC Returns the DC AC voltage measurement on the first display Parameter None Range lt NRf gt MIN MAX DEF Example MEAS VOLT DCAC gt 0 326E 3 Returns the DC AC voltage measurement as 0 326 mV MEASure CURRent DC Returns the DC current measurement on the first display Parameter None Range lt NRf gt MIN MAX DEF Example MEAS CURR DC gt 0 234E 4 Returns the DC current measurement as 0 0234 mA 123 GW INSTEK GDM 834X Series User Manual MEASure CURRent AC Returns the AC current measurement on the first display Parameter None Range lt NRf gt MIN MAX DEF Example MEAS CURR AC gt 0 387E 2 Returns the AC current measurement as 3 87mA MEASure CURRent DCAC Returns the DC AC current measurement on the first display Parameter None Range lt NRf gt MIN MAX DEF Example MEAS CURR DCAC gt 0 123 4 Returns the DC AC current measurement as 0 0123 mA MEASure RESistance Returns the 2W resistance measurement on the first display Parameter None Range lt NRf gt MIN MAX DEF Example MEAS RES gt 1 1937E 3 Returns the 2W measurement as 1 1937kQ MEASure FREQuency Returns the frequency measurement on the first display Parameter None Range lt NRf gt MIN MAX DEF Example MEAS FREQ gt 2 3708E 2 Returns the frequency 237 08Hz MEASure PERiod
79. pacitance Range The capacitance range can be set automatically or manually Auto Range To turn the automatic range selection On Off press the AUTO key Manual Range Press the Up or the Down key to select the range The AUTO indicator turns Off automatically If the appropriate range is unknown select the highest range Selectable Range Resolution Full scale Capactialice 5nF 1pF 5 100nF Ranges 50nF 10pF 51 00nF 500nF 100pF 510 0nF 5pF 1nF 5 100pF 50pF 10nF 51 00 N For further details please see the specifications on Note page 152 N The refresh rate settings and the EXT trigger Note cannot be used in the capacitance mode GW INSTEK 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 Procedure 1 Press the O key twice to activate continuity testing 2 The mode will switch to continuity testing immediately as shown below Display Continuity Continuity function state indicator es 5 TOM 58 U LIN m Connection Connect the test lead between the VO 4 terminal and COM terminal The display updates the reading A INPUT O HE A CAT 600v 1000 C O S
80. play 73 GW INSTEK GDM 834X Series User Manual T rm rr ud 3 Press Enter to activate the 1 math function The results begin immediately Display 1 X 1 X math measurement indicator AC AUTO E Ll Deactivate Math Press the SHIFT MX MN to deactivate the Measurement MATH function or simply activate another measurement function Measure Percentage Procedure 1 Press SHIFT MX MN to enter the MATH menu 2 The MX B setting appears Press the Up key to skip past MX B settings and go to the REF settings will be flashing in the secondary display 3 Use the Left and Right arrow keys to navigate to the digit to be edited or to select the decimal point Use the Up and Down arrow keys to edit the selected digit or to place the position of the decimal point 74 GW INSTEK OPERATION E ma c 4 Press Enter to confirm the REF setting and to begin the Percentage measurement Display Calculated percentage function meausurement indicator DC AUTO 5 gu nnm e LI tht 0d Deactivate Math Press SHIFT MX MN to deactivate the Measurement MATH function or simply activate another measurement function 75 GW INSTEK GDM 834X Series User Manual SysTEM DISPLAY CONFIGURATION View Serial Number rrr ena baeo 77 View Version 12224 77 Brightness Set
81. ple CONF CAP 5E 5 Sets the measurement mode to Capacitance with a 50pF Range CONFigure FUNCtion Returns the current function on the first display Return parameter VOLT VOLT AC VOLT DCAC CURR CURR AC CURR DCAC RES FREQ PER TEMP DIOD CONT CAP 118 GW INSTEK 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 500 0 005 5mA 0 05 50mA 0 5 500mA 5 5A 10 10A DCI 0 0005 500 0 005 5mA 0 05 50mA 0 5 500mA 5 5A 10 10A RES 50 1 5000 50 2 5 50E 3 50kQ 50E 4 500kQ 50 5 5 5 E 6 50MQ CAP 5E 9 5nF 5E 8 50nF 5E 7 500nF 5E 6 5pF 5 50 CONFigure AUTO Sets Auto Range on or off on the first display Parameter ON OFF Example CONF AUTO ON CONFigure AUTO Returns the Auto Range status of the function on the 1 display Return Parameter 0 1 1 Auto range 0 Manual range Secondary Display CONFigure2 Commands CONFigure2 VOLTage DC Sets measurement to DC Voltage on the second display and specifies the range Parameter None Range lt NRf gt MIN MAX DEF Example CONF2 VOLT DC 5 Sets the voltage range to 5 volts 119 GW INSTEK CONFigure2 VOLTage AC Sets measurement to AC Voltage on the second display and specifies the range
82. resistance value in the following dBm 10 logio 1000 x Vreading dB dBm dBmref W Vreading Ref Where Vreading Input Voltage ACV or DCV Rref Reference resistance simulating an output load dBmref Reference dBm value Measuring dBm W Procedure 1 Select ACV or DCV measurement See page 33 2 To measure dBm press SHIFT gt The primary display will show the dBm measurement while the secondary display shows the reference resistance 63 GW INSTEK GDM 834X Series User Manual Display dBm Reference measurement resistance boc td O Uli Setting the To set the reference resistance use the Up and Reference Down arrow keys Resistance The selectable reference resistances are shown below Selectable reference resistances 2 4 8 16 50 75 93 110 124 125 135 150 250 300 500 600 800 900 1000 1200 8000 View the result in When the reference resistance is less than 500 Watts it is possible to calculate the power in watts If the reference resistance is equal to or greater than 500 then this step can be ignored Press SHIFT 4 again to view the result in watts Display Power measurement Reference and unit resistance ang 0016 0 70 LI LI L dBm Exit dBm Press SHIFT 4 again to exit the dBm Measurement measurement or simply activate another measurement function GW INSTEK OPERATION Measure dB dB
83. s ACI DCI Hz P TEMP Procedure 1 Press SHIFT HOLD 2 The high limit setting appears Use the Left and Right arrow keys to navigate to the digit to be edited or to select the decimal point Use the Up and Down arrow keys to edit the selected digit or to place the position of the decimal point 3 Press the Enter key to save the high limit setting and automatically go on to the low limit setting 4 Enter the low limit setting in the same fashion as the high setting 5 Press the Enter key to confirm the low limit settings 6 The compare measurement results will appear immediately If the current measurement reading is between 70 GW INSTEK 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 LAT Uet Deactivate Press SHIFT HOLD to deactivate compare Compare measurements or simply activate another Measurement measurement function 71 GW INSTEK 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 Applicable The math function can be used with the Measurements following basic measurement functions A
84. sabled Remote control will also be disabled the GDM 8342 will stop receiving or transmitting any commands after it starts to save records to USB Save to USB Simple Mode Overview The procedure below describes the save operation when the Mode is set to Simple Procedure 1 Insert a USB stick into the USB Host port on the front panel 2 If the USB stick is recognized by the DMM the USB STO icon will be lit This indicates that the DMM is ready to save files to the USB stick 3 Press SHIFT MENU The USB STO icon will flash slowly indicating the DMM is saving to USB 4 To stop saving to USB press SHIFT MENU again When the save operation has stopped the USB STO icon will stop flashing and will remain lit GW INSTEK USB STORE 5 The USB stick can now be removed or another save operation can be performed N Do not remove the USB stick while the DMM is WARNING saving to the USB drive N 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 filename suffix XX has reached its maximum value 99 and cannot be increased further Display Recorded USB STO Measurement icon D V Onde LIL Save to USB Advance Mode Overview The procedure below describes the save operation when the Mode is set to Advance Procedure 1 Insert a USB stick into the USB Host port on the
85. sistance value for dBm measurements to the maximum allowed CALCulate DBM REFerence Returns the resistance value from the dBm function CALCulate MATH MM Factor Sets the scale factor M for math measurements Parameter lt NRf gt MIN MAX Example CALC MATH MMF MIN Sets the scale factor M to the minimum allowed value CALCulate MATH MMFactor Returns the scale factor M used in the math measurement 132 GW INSTEK COMMAND OVERVIEW CALCulate MATH M BFactor Sets the offset factor B for math measurements Parameter lt NRf gt MIN MAX Example CALC MATH MBF MIN Sets the offset factor B to the minimum allowed value CALCulate MATH M BFactor Returns the offset factor B used in the math measurement CALCulate MATH PERCent Sets the reference value for the Percent function Parameter lt NRf gt MIN MAX Example CALC MATH PERC MAX Sets the reference value for the Percent function to the maximum CALCulate MATH PERCent Returns the reference value setting for the Percent function CALCulate NULL OFFSet Sets the reference value for the relative function This command is analogous to the CALCulate REL REFerence command Parameter lt NRf gt MIN MAX Example CALC NULL OFFS MAX Sets the reference value to the maximum allowed CALCulate NULL OFFSet Returns the reference value from the relative function This query is analogous to the CALCulate REL REFerence query
86. ss the Auto Enter key 2 AUTO will be displayed on the screen again Display Autorange Voltage range indicator setting une 121244 Note The 2nd key is only used to toggle the view of the 52 second display between the menu function FREQ or PERIOD and the voltage range The voltage range can actually be set without switching to the 2ND display GW INSTEK 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 Range Thermocouple 200 C 300 C Procedure To make temperature measurements press SHIFT Hz P TEMP The temperature mode appears showing the temperature on the primary display and the type of sensor on the secondary display Display Temp Measurement Units d m DU LI Connection Connect the sensor lead between the VO 4c terminal and the COM terminal The display updates the reading 53 GW INSTEK GDM 834X Series User Manual c Set the Temperatur
87. tes that the function has been stopped 3 F FULL indicates that the current log file is full 4 D FULL indicates that the USB disk currently being used is full 5 ERROR indicates errors for unknown reasons 89 GW INSTEK 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 Procedure 1 Insert a USB stick and start the USB Store function as described on page 96 or 97 2 To check the status of a save operation press SHIFT 2ND 3 The USB Status menu will appear on the display The elapsed time will be displayed when you enter this menu 4 Press the Left or Right arrow keys to switch between the ELTIME COUNT STATUS S FILE and E_FILE displays 5 Press SHIFT 2ND again to exit from the USB status menu Display Elapsed time Count or USB store status Status item pL ie j USBSTO L l FETA E LILILILIL tt m 90 GW INSTEK USB STORE Set the Starting File Name Available only in Advance Mode Overview The GDM 8342 will allow you to set the value 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 Range GW000 XX CSV to GW999 XX CSV Display File name Name menu number se
88. th ground to avoid electrical shock Fuse e Fuse type 0 125AT 100 120VAC N 0 063AT 220 240 VAC WARNING e Make sure the correct type of fuse is installed before power up To avoid risk of fire replace the fuse only with the specified type and rating Disconnect the power cord before fuse replacement Make sure the cause of a fuse blowout is fixed before fuse replacement Cleaning the Disconnect the power cord before cleaning strument Usea soft cloth dampened in a solution of mild detergent and water Do not spray any liquid Do not use chemicals containing harsh material such as benzene toluene xylene and acetone Operation e Location Indoor no direct sunlight dust free Environment almost non conductive pollution Note below Temperature Full accuracy for 0 C to 50 C Humidity 0 35 C lt 80 RH gt 35 C lt 70 RH Altitude lt 2000m GW INSTEK 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 e Pollution refers to addition of foreign matter solid liquid or gaseous ionized gases that may produce a reduction of dielectric strength or surface resistivity e Pollution degree 1 No pollution or only dry non conductive pollution occurs The pollution has no influence e Pollution degree 2 Normally only non conductive pollution occurs
89. tings uinci nd 78 Resistance Settings eese tnt pce rd bn dedu aa 79 Frequency Period Input Jack Settings 80 Compatibility Settings rtr rt br ra ri beo ina eat 81 Changing the Compatibility Setting 81 Restore Factory Default 82 76 GW INSTEK SYSTEM DISPLAY CONFIGURATION View Serial Number Procedure 1 Press the MENU key 2 Go to SYSTEM on level 1 3 Go to S N on level 2 4 The serial number will be displayed across both the primary and secondary display Display c ny 000000 Exit Press the EXIT key twice to go back to the measurement screen View Version Number Procedure 1 Press the MENU key 2 Go to SYSTEM on level 1 3 Go to VER on level 2 4 The firmware version number will be displayed in the secondary display 5 Press Exit to exit from the version menu v 00 i I LDU ITIN N 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 GW INSTEK GDM 834X Series User Manual Brightness Settings The display has 5 settable brightness levels Range Brightness 1 dim 5 bright Procedure 1 Press the MENU key 2 Go to SYSTEM on level 1 3 Go to LIGHT on level 2 4 Set
90. tting indicator MOM INFITIE Save Count Available only in Advance Mode Range Count CONTINU 00002 50000 Default 10 Overview The COUNT function sets how many readings to perform each time the USB STO function is used By default the COUNT setting is set to 10 When this function is used the DMM will automatically return to the ready status when the specified number of readings have been logged Note however that the CONTINU continuous setting will continuously log data 91 GW INSTEK 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 N When set to CONTINU the actual number of Note reading counts cannot exceed 5000000 50000 readings X100 Count menu indicator gt L LILIIN T Display Count setting Save to an Existing File Available only in Advance Mode Range FILE CONTINU NEWFILE Default NEWFILE Overview By default a new file is created each time the USB STO function is used The FILE menu gives you the option to continue saving to the previous file rather than creating a new file each time the USB STO function is used This setting will appear automatically after the USB Store function has been started in Advance mode see page 97 for details Display File menu File menu setting indicator vn FILE 92 GW
91. tude 2000 meters Pollution degree 2 Storage Conditions 10 70 C Temperature Range 0 35 C Relative Humidity lt 90 RH gt 35 C Relative Humidity lt 80 RH General Power Consumption Max 15VA Dimensions 265 mm W X 107 mm H X 302 mm D Weight Approximately 2 9 kg 149 GW INSTEK GDM 834X Series User Manual DC Voltage Accuracy Input Range Resolution Full Scale 1 year 23 C 5 C Resistance 10MQ or 500 10pV 510 00 Hen 10MQ or zii i id pe 0 029644 gt 10 0 50V ImV 51 000 11 1MQ 500V 10mV 510 00 10 1MO 1000V 100mV 1020 0 10MQ When the input value exceeds the full scale of the selected range the display will show OL over load on the display The specifications are guaranteed to an input voltage of 1000V A beeping alarm will go off when the input voltage is higher than 1000V Input protection of 1000V peak on all ranges DC Current Accuracy Shunt Burden Range Resolution Full Scale 1 year 23 x5 C Resistance Voltage 500pA 10nA 510 00 0 05 5 1000 0 06 5mA 100nA 5 1000 0 05 4 1000 0 6V 50 51 000 0 05 4 10 0 14V max 500mA 10pA 510 00 0 10 4 10 1 4V max 5A 100pA 5 1000 0 25 5 10mQ 0 5V max 10A 12 000 0 25 5 10mQ 0 8V max 500pA 500mA range has 3 6V voltage limit protection and 0 5A fuse protection And 10A range has a 12A fuse protection When the input value exceeds the full scale of the selected range t
92. u systems AUTO ENTER When used as an AUTO key it C will set the range of the selected function to autorange When used as an ENTER key it will confirm the entered value or menu item 19 GW INSTEK GDM 834X Series User Manual Arrow Keys RANGE E The arrow keys are used to A navigate the menu system and edit values CD The Up and Down arrow keys will also manually set the range for the voltage and current measurements RANGE The Left and Right arrow keys will also toggle the refresh rate between the fast medium and slow rates Display Overview Primary measurement units Primary measurement Secondary Display function icons Secondary measurement units GWINSTEK coM ssae 50000 Dual Measurement AC DC 2W4W AUTO FMS HOLD RELMIN MAX RMT AWA fi 1 RATIO UNCAL MEM USBSTO CR SW 9 M C FSW mu NR NN uh va DC 2W AW AUTOMATH LIMIT ERR SHIFT EXT dBi mu im N i M dBm 2ND COMP STO RCL FILT RS232 LAN USB GPIB REAR Secondary measurement function icons gt Primary Display Function status icons Primary Displays the primary measurement function Measurement Function Icons Primary Displays the units for the primary measurement Measurement function Units Secondary Displays the results of the secondary Display measurement 20 GW INSTEK GETTING STARTED
93. uestion mark A parameter data is returned Example CONFigure RANGe Command Forms Commands and queries have two different forms long and short The command syntax is written with the short form of the command in capitals and the remainder long form in lower case The commands can be written either in capitals or lower case just so long as the short or long forms are complete An incomplete command will not be recognized Below are examples of correctly written commands Long form CONFigure DIODe CONFIGURE DIODE Configure diode 107 GW INSTEK GDM 834X Series User Manual Short form CONF DIOD conf diod Square Brackets Commands that contain 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 both valid forms Command CONFigure VOLTage DC 500 Format 1 2 3 1 Commandheader 3 Parameter 1 2 Space Common Type Description Example Input Parameters Booleans boolean logic 0 1 NRI integers 0 1 2 3 lt NR2 gt decimal 0 1 3 14 8 5 numbers lt NR3 gt floating point 4 5 1 8 25 1 with exponent lt NRf amp any of NR1 2 3 1 1 5 4 5e 1 108 GW INSTEK COMMAND OVERVIEW MIN Optional For commands this will set the parameter setting to the lowest value This parameter can be used in
94. uity Threshold 2 49 Continuity Beeper Settings 50 Frequency Period Measurement 51 Frequency Period Voltage Range Settings 52 Temperature 53 Set the Temperature 54 Select Thermocouple 55 GW INSTEK GDM 834X Series User Manual Set the Reference Junction Temperature 56 Dual Measurement 57 Supported dual measurement modes 57 Using Dual Measurement 58 Advanced Measurement 62 Supported Advanced Measurement Functions 62 dBm dB W 63 Calculation sees 63 Measuring dBM W 63 0 05 65 Max Min 66 Relative 67 Hold 69 Compare 70 Math
95. ulate LI Mit LOWer 131 131 4422 132 CALCulate DB REFerence 132 CALCulate DB REFerence 132 132 132 CALCulate 132 132 CALCulate MATH MBFactor 133 CALCulate 133 CALCulate MATH PERCent eene 133 133 133 2 133 Trigger Commands d pp 134 LR 134 NECI acs 134 OURCe cti entres 134 TRIGger SOUR Ce iere terrere onnes 134 TRIGSer AUTO necem erp 135 135 5 135 0 8 135 TRIGSer COU Nt ise ettet 135 TRIGger COUN eee tenete 135 113 GW

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