EEVBlog 121GW User Manual Download

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121GW Multimeter

User’s Manual

Last Revised

26 October 2018

Summary of Contents for 121GW

Page 1: ...121GW Multimeter User s Manual Last Revised 26 October 2018 ...

Page 2: ...troduction 11 Multimeter Features 12 Summary 12 Logging Capabilities 12 Mechanical 12 Software 12 Batteries 12 Specifications 13 General 13 DC AC Voltage 14 Current 15 Resistance Capacitance 15 Diode 15 Frequency Duty Cycle 16 VA 16 Temperature Continuity 16 Bluetooth 17 Standards 18 Compliance Symbols 18 IEC Standards 18 ANSI Standards 18 Safety EN 19 Sécurité FR 21 ...

Page 3: ...30 OFF Low Z mVA VA Hz ms V mV Temp mA A VA A Ω 30 OFF Low Z mVA VA Hz ms V mV Temp mA A VA A Ω 30 OFF Low Z mVA VA Hz ms V mV Temp mA A VA A Ω 31 Z VA VA Hz ms V mV Temp mA A VA A 31 Taking Measurements 32 Voltage 32 DC voltage 32 AC voltage 33 dBm measurement 34 DC AC volts 35 DC mV AC mV 36 Low Z DC voltage 37 Current 38 DC amps DC milliamps 38 AC amps AC milliamps 39 DC μA AC μA 40 Burden Volt...

Page 4: ...ncy 53 Period 54 Duty Cycle 55 Other Measurement Functions 56 Manually changing a range 56 Measurement Holds 56 Manual Hold 56 Automatic Hold 56 REL Relative Measurement 56 MIN MAX AVG 57 Backlight 58 Data Logging 59 Bluetooth 60 Setup Menu 61 Maintenance 64 Debugging 64 Cleaning Storage 64 Fuse Replacement 65 Calibration 66 Firmware Update 70 Warranty 71 ...

Page 5: ...uring on the μA microamps range 40 Figure 15 Lead configuration for measuring burden voltage on the A mA mode 42 Figure 16 Lead configuration for measuring burden voltage on the μA range 42 Figure 17 Practical example of how to connect leads when measuring current 43 Figure 18 The correct electrical connections for making measurements on power VA modes 44 Figure 19 Meter terminals to use when meas...

Page 6: ...6 121GW Multimeter User s Manual 26 Oct 2018 ...

Page 7: ...sales eevblog com This multimeter and its accessories can be purchased from the online store at www eevblog com Community support for this meter is provided on the EEVBlog Forum at www eevblog com forum If you have an urgent request or cannot get the help you need online you can call us on 61 2 8626 8743 ...

Page 8: ...ofit standards organisation that oversee the development and use of standards in various domains ETL ETL Testing Laboratories The compliance certification mark of Intertek Group in Europe OP Overload Protection The voltage that a function of the Multimeter than withstand Accuracy The closeness of a measured value to a known standard Low BurdenTM Provides low burden voltage when measuring current c...

Page 9: ...o this guide Release Date Changes Description 15th December 2018 Re write of various sections New style and graphics 15th January 2018 Added Serial Number section Added Hold requirement to save setup items Fixed various grammar errors Added Bluetooth symbol to frontpage 11th December 2017 Original Release ...

Page 10: ...e radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in an installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try...

Page 11: ... in and Micro SD card data logging You ve made a wise choice buying this instead of some questionable quality cheapie it should return the favour with many years of safe and accurate service That ETL logo you see stamped on the back of the meter ensures that the meter design has been independently tested to the latest IEC UL EN61010 1 3rd Edition safety standard by Intertek With a genuine 600V CAT...

Page 12: ...erature capacitance frequency and duty cycle Simultaneous voltage current measurement and VA calculation Low Z input mode eliminates ghost voltages Automatic touch hold data measurement Audible and visual incorrect input jack warning Closed case calibration of individual ranges Logging Capabilities Bluetooth LE Low Energy communication Data logging onto a Micro SD card CSV format Mechanical Compac...

Page 13: ...2 F Temperature coefficient Temperature coefficient Nominal TC 0 1 Specified accuracy C RMS sensing True RMS sensing AD8436 Ingress protection IP41 Pollution degree 2 Safety cETLus 3rd Edition CAT III 600 V CE Conformity IP41 RoHS Compliant IEC EN61010 1 2010 3rd Edition Drop protection 1m Transient protection 6 kV 2 Ω Pulsed Source EMC Commercial limits compliance with EN61326 1 Bluetooth BLE112 ...

Page 14: ...0 mV 0 05 5 600 V 0 1 V 0 1 10 AC V True RMS Crest Factor 10 50 mV 1 μV 1 2 15 45 to 400 Hz 50 mV 1 μV 2 0 20 0 4 to 5 kHz 500 mV 10 μV 0 8 10 45 to 400 Hz 500 mV 10 μV 1 5 10 0 4 to 5 kHz 5 to 500 V 0 1 to 10 mV 0 3 10 45 to 400 Hz 5 to 500 V 0 1 to 10 mV 1 5 10 0 4 to 5 kHz 600 V 0 1 V 1 0 10 45 to 400 Hz 600 V 0 1 V 1 0 10 0 4 to 5 kHz AC V DC V True RMS 5 to 500 V 0 1 to 10 mV 1 0 10 45 to 100...

Page 15: ... mode will use the x10 amplified and may have additional offset error that should be REL d out before measurement 5 The burden voltage can change with the type of fuse fitted Resistance Capacitance Measurement Range Resolution Accuracy R Ω 50 Ω6 0 001 Ω 0 5 20 500 Ω 0 01 Ω 0 3 5 5 to 500 kΩ 0 1 to 0 01 kΩ 0 2 5 5 MΩ 0 1 kΩ 0 3 5 50 MΩ 1 kΩ 1 2 20 C μF 10 nF to 100 μF 0 01 nF to 0 1 μF 2 5 5 9999 μ...

Page 16: ... with the corresponding ranges for the voltage and current ranges being used respectively Congruent with the VA resolution provided for that range Temperature Continuity Measurement Range Resolution Accuracy Temp C 200 to 1350 C K Type 0 0 C 0 5 3 C Continuity 30 Ω or 300 Ω User selectable OPEN or CLOSED 10 m Ω This channel has overload protection for up to 600 V External temperature measurement u...

Page 17: ...12 The Bluetooth module is in conformity with the essential requirements and other relevant requirements of the CE RED 2014 53 EU The product is in conformity with the following standards and or normative documents Essential Requirement Applicable Standards Specifications Safety Requirements EN 60950 1 2006 A11 2009 A1 2010 A12 2011 A2 2013 EMC Requirements EN 301 489 1 V2 1 1 EN 301 489 17 V3 1 1...

Page 18: ...ropéenne mark It indicates that the product complies with required European standards ETL the listed CUS Mark It Indicates that the product is the mark that indicates testing by Intertek IEC Standards The product is Extra Low voltage system as per IEC 60038 The product VAC does not supply 50 or 120 VDC The product is classified as IP41 as per IEC 60529 standards Tested for IEC 60950 1 and IEC EN61...

Page 19: ...c shock CAUTION See explanation in section WARNING A condition or action that could result in serious injury or death to the user 1 Using the device outdoors risks electric shock or fire The device is not designed to operate in rain or moisture 2 The product is rated IP41 and should be treated accordingly This means that the product should not be exposed to liquids or dust 3 Inspect leads and ensu...

Page 20: ...that could result in damage or malfunctions in the instrument 1 Before changing functions remove test leads from any measurement point 2 Before any measurement ensure test leads are connected to appropriate connector on the device and in an appropriate manner to the test points ...

Page 21: ... condition ou une action qui pourrait entraîner des blessures graves ou la mort de l utilisateur 1 L utilisation de l appareil à l extérieur risque d être électrique ou d incendie L appareil n est pas conçu pour fonctionner sous la pluie ou l humidité 2 Le produit est classé IP41 et devrait être traité en conséquence Cela signifie que le produit ne doit pas être exposé aux liquides ou à la poussiè...

Page 22: ... des dégâts ou des dysfonctionnements dans l instrument 1 Avant de modifier les fonctions retirez les fils de test de n importe quel point de mesure 2 Avant toute mesure assurez vous que les fils de test sont connectés au connecteur approprié sur l appareil et de manière appropriée aux points de test ...

Page 23: ...ns utilise some symbols which are defined in the table below Symbol Meaning Symbol Meaning Dangerous Voltage Warning or Caution AC Alternating Current Ground DC Direct Current Double Insulation Protection Class II Either AC or DC Fuse Not Applicable to Identified Model Battery ...

Page 24: ...A mA A COM 10A MAX FUSED 400mA MAX FUSED MAX CAT III 600V Ω V Temp LOW BURDEN True RMS OFF OFF Low Z V mV Hz mVA VA mA A VA ms Temp Ω A 15V AutoHOLD RANGE HOLD REL PEAK 1ms 1kHz MODE MIN MAX MEM SETUP MULTIMETER 121GW 1 2 3 4 Figure 1 Front panel Legend Number Item Name See Page 1 Display screen 26 2 Keypad 27 3 Rotary switch 26 4 Input terminals 28 ...

Page 25: ...25 121GW Multimeter User s Manual 26 Oct 2018 Back The diagram below labels important features on the back of your meter Magnetic clip holder Probe holders Tilting bail Rubber boot Figure 2 Back view ...

Page 26: ...lay is only used when a function that requires it is selected A fast updating bar graph is below the main display Primary display Secondary display Bar graph Figure 3 Display screen Rotary switch Used to turn the power on and off and to select the primary measurement function There are two 2 OFF positions for convenience and both work identically OFF OFF Low Z V mV Hz mVA VA mA A VA ms Temp Ω A Fi...

Page 27: ... pass filter AutoHOLD HOLD REL PEAK 1ms 1kHz MIN MAX MEM SETUP Used to select the 1 ms PEAK CAPTURE mode Secondary use as the DOWN arrow key for setup selection Holding down this button turns on and off the Bluetooth data transfer functionality 15V AutoHOLD RANGE HOLD REL PEAK 1ms 1kHz MODE MIN MAX MEM SETUP Used to select and cycle through the different function modes displayed in red on the rota...

Page 28: ...t is 11 A HRC fused An input warning alert functions for the is jack A 500mA mA A COM Ω V Temp Milliamps Microamps This input jack is used for the 50 mA and μA current modes It is 400 mA HRC fused An input warning alert functions for the is jack A 500mA mA A COM Ω V Temp Common The common jack ground negative for all ranges and functions mA A COM Ω V Temp Volts Ohms Continuity Capacitance Diode Te...

Page 29: ...lowing modes available at this position Mode Name Rotary Switch Symbol Initial Primary Display Units Display Initial Secondary Display See Page 1 DC volts OFF Low Z mVA VA Hz ms V mV Temp mA A VA A Ω 0 0000 DC V Temperature 32 2 AC volts OFF Low Z mVA VA Hz ms V mV Temp mA A VA A Ω 0 0000 AC V 00 00 Hz 33 3 DC AC volts OFF Low Z mVA VA Hz ms V mV Temp mA A VA A Ω 0 00 DC AC V Temperature 35 VA Hz ...

Page 30: ...ition Mode Name Rotary Switch Symbol Initial Primary Display Initial Units Display Initial Secondary Display See Page 1 Resistance OFF Low Z mVA VA Hz ms V mV Temp mA A VA A Ω 0 FL M Ω Temperature XX 2 Continuity Cable Break OFF Low Z mVA VA Hz ms V mV Temp mA A VA A Ω 0F L Ω Temperature XX 3 Diode OFF Low Z mVA VA Hz ms V mV Temp mA A VA A Ω 0FL V Temperature XX 4 Capacitance OFF Low Z mVA VA Hz ...

Page 31: ...mA A VA A Ω 0 000 AC µA bd 0FF XX 3 DC µVA OFF Low Z mVA VA Hz ms V mV Temp mA A VA A Ω 0 00 DC µVA 0 0000 V 0 00 mA XX 4 AC µVA OFF Low Z mVA VA Hz ms V mV Temp mA A VA A Ω 0 00 AC µVA 0 0000 V 0 00 mA XX Hz ms V mV Temp mA A VA A Pressing 15V AutoHOLD RANGE HOLD REL PEAK 1ms 1kHz MODE MIN MAX MEM SETUP will cycle through the following modes available at this position Mode Name Rotary Switch Symb...

Page 32: ...sition but if you have previously changed the mode then the meter will remember your choice so press 15V AutoHOLD RANGE HOLD REL PEAK 1ms 1kHz MODE MIN MAX MEM SETUP until you see DC at the top left of the primary display DC volts is measured between the two probes A 500mA mA A COM 10A MAX FUSED 400mA MAX FUSED MAX CAT III 600V Ω V Temp LOW BURDEN True RMS OFF OFF Low Z V mV Hz mVA VA mA A VA ms T...

Page 33: ... A 500mA mA A COM 10A MAX FUSED 400mA MAX FUSED MAX CAT III 600V Ω V Temp LOW BURDEN True RMS OFF OFF Low Z V mV Hz mVA VA mA A VA ms Temp Ω A 15V AutoHOLD RANGE HOLD REL PEAK 1ms 1kHz MODE MIN MAX MEM SETUP MULTIMETER 121GW OFF Low Z mVA VA Hz ms V mV Temp mA A VA A Ω Figure 6 Measuring on the AC V range This switch position has two further ranges DC volts and DC AC volts See the table on page XX...

Page 34: ... MEM SETUP until dBm is displayed at the far top right of the screen A 500mA mA A COM 10A MAX FUSED 400mA MAX FUSED MAX CAT III 600V Ω V Temp LOW BURDEN True RMS OFF OFF Low Z V mV Hz mVA VA mA A VA ms Temp Ω A 15V AutoHOLD RANGE HOLD REL PEAK 1ms 1kHz MODE MIN MAX MEM SETUP MULTIMETER 121GW Figure 7 dBm measurement display The value of dBm is defined and calculated as follows note that RREF is by...

Page 35: ...primary display DC AC volts is measured between the two probes A 500mA mA A COM 10A MAX FUSED 400mA MAX FUSED MAX CAT III 600V Ω V Temp LOW BURDEN True RMS OFF OFF Low Z V mV Hz mVA VA mA A VA ms Temp Ω A 15V AutoHOLD RANGE HOLD REL PEAK 1ms 1kHz MODE MIN MAX MEM SETUP MULTIMETER 121GW OFF Low Z mVA VA Hz ms V mV Temp mA A VA A Ω Figure 9 Measuring on the DC AC V range This switch position has two...

Page 36: ...ve to select the mode again by pressing 15V AutoHOLD RANGE HOLD REL PEAK 1ms 1kHz MODE MIN MAX MEM SETUP The measurement is taken between the two probes A 500mA mA A COM 10A MAX FUSED 400mA MAX FUSED MAX CAT III 600V Ω V Temp LOW BURDEN True RMS OFF OFF Low Z V mV Hz mVA VA mA A VA ms Temp Ω A 15V AutoHOLD RANGE HOLD REL PEAK 1ms 1kHz MODE MIN MAX MEM SETUP MULTIMETER 121GW OFF Low Z mVA VA Hz ms ...

Page 37: ... to the input terminals as shown below in Figure 5 DC volts is measured between the two probes Figure 11 Measuring on the Low Z range Ghost voltages are voltages present on a circuit that should not be energized The Low Z function can remove ghost voltages from your measurements by dissipating any coupling voltage Use this range to reduce the possibility of false readings where the presence of gho...

Page 38: ...de at this rotary switch position but if you have changed the mode previously to AC A mA then you will have to change back by pressing 15V AutoHOLD RANGE HOLD REL PEAK 1ms 1kHz MODE MIN MAX MEM SETUP This is a combined amps and milliamps mode The meter will automatically change ranges for you as the measurement requires it LOAD A 500mA mA A COM 10A MAX FUSED 400mA MAX FUSED MAX CAT III 600V Ω V Te...

Page 39: ...terminals as shown in Figure XX on page XX To use this mode press 15V AutoHOLD RANGE HOLD REL PEAK 1ms 1kHz MODE MIN MAX MEM SETUP until AC appears to the top left of the primary display This is a combined amps and milliamps mode The meter will automatically change ranges for you as the measurement requires it Figure 13 Measuring on the AC A mA range This switch position has one other range DC A m...

Page 40: ...SETUP LOAD LOAD A 500mA mA A COM 10A MAX FUSED 400mA MAX FUSED MAX CAT III 600V Ω V Temp LOW BURDEN True RMS OFF OFF Low Z V mV Hz mVA VA mA A VA ms Temp Ω A 15V AutoHOLD RANGE HOLD REL PEAK 1ms 1kHz MODE MIN MAX MEM SETUP MULTIMETER 121GW OFF Low Z mVA VA Hz ms V mV Temp mA A VA A Ω Figure 14 Measuring on the μA microamps range This switch position has two other modes DC µVA and AC µVA See the ta...

Page 41: ... starts flashing and or the meter beeps depending on your audio setting to indicate you can change the setting 4 Press 15V AutoHOLD RANGE HOLD REL PEAK 1ms 1kHz MODE MIN MAX MEM SETUP or 15V AutoHOLD RANGE HOLD REL PEAK 1ms 1kHz MODE MIN MAX MEM SETUP once to change the secondary display to bd 0n 5 Hold 15V AutoHOLD RANGE HOLD REL PEAK 1ms 1kHz MODE MIN MAX MEM SETUP down for a few seconds again u...

Page 42: ...21GW OFF Low Z mVA VA Hz ms V mV Temp mA A VA A Ω Figure 15 Lead configuration for measuring burden voltage on the A mA mode A 500mA mA A COM 10A MAX FUSED 400mA MAX FUSED MAX CAT III 600V Ω V Temp LOW BURDEN True RMS OFF OFF Low Z V mV Hz mVA VA mA A VA ms Temp Ω A 15V AutoHOLD RANGE HOLD REL PEAK 1ms 1kHz MODE MIN MAX MEM SETUP MULTIMETER 121GW OFF Low Z mVA VA Hz ms V mV Temp mA A VA A Ω LOAD F...

Page 43: ...wire High current through a meter is the most common way that a fuse can get blown so always ensure that the meter is in the correct mode and that you have the probes or leads connected to the correct terminals A 500mA mA A COM 10A MAX FUSED 400mA MAX FUSED MAX CAT III 600V Ω V Temp LOW BURDEN True RMS OFF OFF Low Z V mV Hz mVA VA mA A VA ms Temp Ω A 15V AutoHOLD RANGE HOLD REL PEAK 1ms 1kHz MODE ...

Page 44: ... and current at the same time so a different lead setup is required to successfully make the measurement Figure XX below shows a generic schematic representation of how the measurement system connections should be made with the meter s common terminal connecting to the ground for both voltage and current V A Device or Circuit Meter PSU or Battery Figure 18 The correct electrical connections for ma...

Page 45: ...mode The meter will automatically change ranges for you as the measurement requires it DC mVA VA is the default mode at this rotary switch position but if you have changed the mode previously to AC mVA VA then the meter will remember your choice so you may have to select the mode again by pressing 15V AutoHOLD RANGE HOLD REL PEAK 1ms 1kHz MODE MIN MAX MEM SETUP Figure 19 Meter terminals to use whe...

Page 46: ... changed the mode previously then the meter will remember your choice so you may have to select the mode again by pressing 15V AutoHOLD RANGE HOLD REL PEAK 1ms 1kHz MODE MIN MAX MEM SETUP Figure 20 Meter terminals to use when measuring on the DC µVA AC µVA modes Please refer to the previous page page XX for important information on how the measurement system connections should be made when measuri...

Page 47: ...ple needs to be inserted the correct way around look for the positive and negative sign indicators on the body of the thermocouple plug To use this mode press 15V AutoHOLD RANGE HOLD REL PEAK 1ms 1kHz MODE MIN MAX MEM SETUP until o C appears to the right of the primary display Figure 21 Measuring in the temperature mode This switch position has two other modes DC mV and AC mV See the table on page...

Page 48: ...l remember your choice so you may have to select the mode again A 500mA mA A COM 10A MAX FUSED 400mA MAX FUSED MAX CAT III 600V Ω V Temp LOW BURDEN True RMS OFF OFF Low Z V mV Hz mVA VA mA A VA ms Temp Ω A 15V AutoHOLD RANGE HOLD REL PEAK 1ms 1kHz MODE MIN MAX MEM SETUP MULTIMETER 121GW OFF Low Z mVA VA Hz ms V mV Temp mA A VA A Ω Figure 22 Measuring on the resistance range This switch position ha...

Page 49: ...BURDEN True RMS OFF OFF Low Z V mV Hz mVA VA mA A VA ms Temp Ω A 15V AutoHOLD RANGE HOLD REL PEAK 1ms 1kHz MODE MIN MAX MEM SETUP MULTIMETER 121GW OFF Low Z mVA VA Hz ms V mV Temp mA A VA A Ω Figure 23 Measuring on the continuity range In this mode there are four settings that alow you to measure either continuity or cable break discontinuity with two different resistance thresholds 30 Ω and 300 Ω...

Page 50: ... audio setting to indicate you can change the setting 4 Press 15V AutoHOLD RANGE HOLD REL PEAK 1ms 1kHz MODE MIN MAX MEM SETUP or 15V AutoHOLD RANGE HOLD REL PEAK 1ms 1kHz MODE MIN MAX MEM SETUP to toggle between continuity testing mode and cable break testing mode Continuity is represented by the dm setting and you can select either dm 30 or dm 300 for 30 Ω or 300 Ω respectively Cable break is is...

Page 51: ...51 121GW Multimeter User s Manual 26 Oct 2018 Diodes ...

Page 52: ...elative REL function Make sure the probes are not touching and that your hands are not touching them Ensure you have the the meter in capacitance measurement mode then press 15V AutoHOLD RANGE HOLD REL PEAK 1ms 1kHz MODE MIN MAX MEM SETUP once A small triangle should appear in the bottom left of the display as in diagram XXX below The meter is now zeroed for capacitance A 500mA mA A COM 10A MAX FU...

Page 53: ... so you may have to select the mode again A 500mA mA A COM 10A MAX FUSED 400mA MAX FUSED MAX CAT III 600V Ω V Temp LOW BURDEN True RMS OFF OFF Low Z V mV Hz mVA VA mA A VA ms Temp Ω A 15V AutoHOLD RANGE HOLD REL PEAK 1ms 1kHz MODE MIN MAX MEM SETUP MULTIMETER 121GW OFF Low Z mVA VA Hz ms V mV Temp mA A VA A Ω Figure 25 Measuring on the frequency range This switch position has two other modes perio...

Page 54: ...54 121GW Multimeter User s Manual 26 Oct 2018 Period ...

Page 55: ...55 121GW Multimeter User s Manual 26 Oct 2018 Duty Cycle ...

Page 56: ...r visible The bargraph display will continue to update in live mode while the cap tured value is held on the screen Automatic Hold Press the HOLD button twice until A HOLD is displayed This mode will wait for a stable reading and automatically lock that value on the display A beep will be heard to indicate this capture It will continue to hold this value until the measurement changes significantly...

Page 57: ...function AVG This can be entered by pressing the button until the AVG symbol appears To capture min max and average results press the MIN MAX button until all three icons are shown on the LCD To exit out of these modes hold the button until a beep is heard and the icons are cleared from the screen Pressing the MIN MAX button will cycle through the displayed results of each measurement ...

Page 58: ...58 121GW Multimeter User s Manual 26 Oct 2018 Backlight To enable the backlight hold the MODE button ...

Page 59: ... by default recorded once per second The logging data is stored on the SD card in the following format as a CSV TABLE Main Secondary Sample Function Value Units Function Value Units 1 DCV 0 0000 V etc etc etc The data that is recorded is taken from the currently displayed function if you are measuring voltage then voltage is recorded The number of accumu lated logged data points is displayed on th...

Page 60: ...LCD Ensure that Bluetooth is enabled on the host device before running the appli cation on the remote computing device The multimeter will continue to functional as normal in Bluetooth mode but the display data will be transmitted via the Bluetooth connection To disable Bluetooth mode press and hold the 1ms Peak button until BT is not displayed ...

Page 61: ...nt temperature measurement Note that there will be thermal lag due to the sealed enclosure It is displayed on the secondary display The displayed temperature can be changed from Celsius to Fahrenheit using the SETUP menu To do this 1 Make sure the temperature is displayed 2 Press and hold SETUP 3 Use the UP DOWN arrow keys to select the mode 4 Hold SETUP until a beep is heard to save the value BAT...

Page 62: ...nd b ON 4 Hold SETUP until a beep is heard to save the value LCD CONTRAST If the multimeter has ghosted characters you may want to turn the contrast down if the screen is not dark enough you may need to turn up the contrast This may need to be changed due to variations in ambient operating temper ature To change the contrast 1 Navigate to the menu item that says LCD X using the SETUP button 2 Hold...

Page 63: ... 1 Navigate to the menu item XXXXX using SETUP Where X are num bers 2 Hold SETUP 3 Press UP and DOWN keys to configure the value 4 Hold SETUP until a beep is heard to save the value LOGGING INTERVAL The logging interval can range from 200 ms to 999 seconds If you need to change the interval then you should 5 Navigate to the menu item In x using SETUP 6 Hold SETUP 7 Press UP and DOWN keys to config...

Page 64: ...t be opened to replace the AA batteries 2 If the measurements fail to respond to changes in measured devices check the fuse leads and test probe connections Cleaning Storage The device should be kept in a clean condition this requires periodic clean ing The device should be cleaned slightly damp cloth with mild detergent Do not use solvents or abrasives as they could damage the device When the dev...

Page 65: ...s blown If it beeps when connected to the A jack then it is likely that the larger A fuse is blown If it beeps when connected to the mA jack then it is likely that the smaller mA fuse is blown mA μA current input fuse 400 mA 600 V DC AC IR 10 kA HRC FAST Designed to UL 248 1 Dimension 6mm x 32 mm Recommended ASTM HV610 0 4 400 mA 600V or HV620 0 4 1000V A 500 mA current input fuse 11 A 1000 V DC A...

Page 66: ... enable calibration mode the following procedure must be followed Turn off the meter 1 Press and hold the MODE button 2 Turn on device 3 If the screen says CAL 1 Press REL button enter calibration mode 4 The secondary screen will display CAL when the device is in calibra tion mode 5 Switch to the function mode you want to calibrate as per normal me ter operation voltage current resistance etc 6 Pr...

Page 67: ... in the multimeter 9 Hold MEM 10 Turn on the meter 11 Release MEM 12 Press the DOWN button 13 Press the Mode button 14 The calibration data will now save to the SD card ZERO OFFSET CALIBRATION To calibrate the offset of a mode and range the following procedure must be followed 1 Follow the steps shown in the section Cal ibration Mode 2 Disconnect or short the input that would result in a zero read...

Page 68: ...be restarted FULL SCALE GAIN CALIBRATION Before attempting any full scale gain calibration you need to be sure that you have the required reference values for the ranges that calibration is needed These values are given in the calibration table To calibrate the full scale gain of a range the fol lowing procedure must be followed 1 Follow the steps shown in the section Calibration Mode 2 Connect a ...

Page 69: ...TE If you do not setup the leads prior to starting the offset calibration then the final calibration value will be affected If at any time during the timer countdown the measurement is interrupted the offset calibration pro cedure should be restarted ...

Page 70: ...e latest EEVblog bin firmware file 3 Press and hold the and buttons simultaneously 4 Switch on the multimeter 5 If IAP appears on the screen then press to enter firm ware upgrade mode 6 Once you are ready to begin the up grade press again to begin 7 The multimeter will restart itself once the update is complete do not do this manually NOTE Do not disconnect the SD card or power down the multimeter...

Page 71: ... tampering hacking acci dent misuse abuse neglect or improper maintenance Batteries and consequential damage resulting from failed batteries are not covered by warranty Any implied warranties including but not limited to implied warranties of merchantability and fitness for a purpose are limited to the express war ranty The company shall not be liable for loss of use of the instrument or other inc...

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