User Manuals
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1. gt High W 2 pna nma ara 12 x SETUP AC DC RANGE EXIT 1 11 Illustration 1 CMM 40 4 1 1 Sockets 7 measurement socket mA pA 10A Measurement socket for the purpose of measurements of di rect and current 8 measurement socket COM Measurement socket common for all the measurement func tions connection to the mass of the device 9 measurement socket Q gt ej CAP V C Hz 96 Measurement socket for all the measurement functions ex cept of current measurements 4 1 2 Elements of selection of the measurement function 1 40 000 count LCD display 2 STORE lt RECALL button 3 MAX MIN button 4 MODE button 5 RANGE SETUP button 6 Rotational selector Selection of function e pA direct and alternative current measurement up to 40001 4 20mA loop current measurement mA direct and alternative current measurement up to 400mA 10 2 direct and alternative current measurement up to 10A frequency and duty cycle measurement OFF meter off VacHz alternative voltage frequency and duty cycle measurement Voc direct voltage measurement mV direct and alternative2. Swe SS a b e d 2 cnet ttn one 9V battery Diode test 0 9 Uo 2 8V f Continuity test 1 0 35mA sound signal for lt 350 9 Overrange indication OL displayed h Crest lt 3 at full scale up 500V Measurement category in acc with EN 61010 1 600V decreasing linearly to lt 1 5 at 1000V captures peaks 1ms Measurements rate 2 times per second nominal Input gt 10MQ VDC amp gt 9MQ Display 40 000 count backlit liquid crystal with bargraph Store 2000 187 x 81 x 55 Weight includes 342g FUSES mA HA ranges 0 5A 1000V ceramic fast blow EHE A range 10A 1000V ceramic fast blow Operating temperature 0 C to 40 C 32 F to 104 F Storage temperature 20 C to 60 C 4 F to 140 F Operating max 80 up to 31 C 87 F decreasing linearly to 50 at 40 C 1049 Storage humidity seen lt 80 Max operating 2000m 7000ft Auto power OFF 15 minutes
3. ATTENTION introduces a description of a situation where non observance of the recommendations presented in the present manual may imply damage for the meter Indications of possible problems are preceded by the word Caution WARNING Before using the instrument acquaint yourself with the pre sent manual and observe the safety regulations and recom mendations specified by the manufacturer WARNING The purpose of the CMM 40 meter is to realise measure ments of AC DC voltage AC DC current resistance capaci tance frequency duty cycle diode test continuity and tem perature Using the meter in a manner which does not com ply with the recommendations specified in the present man ual may lead to its damage and constitutes a source of a se rious risk for the user WARNING The CMM 40 meter may be operated solely by qualified and properly authorised personnel for work at electric installa tions Using the meter by unauthorised personnel may lead to its damage and constitutes a source of a serious risk for the user 2 Safety In order to guarantee proper operation and correctness of the obtained results it is necessary to observe the following recommen dations Before commencing operation of the meter please acquaint yourself thoroughly with the present manual The instrument should be operated solely by properly qualified personnel who also must be trained regarding the industrial s
4. 3 5 10 digits 400 00 01 4000 0 1 m 40 000mF 0 001mF 5 m v 10 digits Frequency measurement electron ic Range Resolution Basic uncertainty 40 000Hz 0 001Hz 400 00Hz 0 01Hz 4 0000kHz 0 0001kHz 40 000kHz 0 001kHz 0 1 m v 1 digit 400 00kHz 0 01kHz 4 0000MHz 0 0001MHz 40 000MHz 0 001MHz 100 00MHz 0 01MHz Not specified Sensitivity 0 8V rms min 20 to 80 duty cycle and 100kHz 5Vrms min 20 to 80 duty cycle and gt 100kHz 31 Frequency measurement electrical Range Resolution Basic uncertainty 40 00Hz 0 01Hz 10 000kHz 0 001kHz t 0 5 Sensitivity 1Vrms Duty cycle measurement Range Resolution Basic uncertainty 0 10 99 0 0 0196 1 2 m v 2 digits Pulse width 100 100ms Frequency 5Hz to 150kHz Temperature measurement Range Resolution Basic uncertainty 50 0 1200 0 C 0 1 C 1 2 5 C 58 0 2192 0 F 0 1 F 1 m v 4 5 F probe accuracy not included 4 20mA 6 loop measurement Range Resolution Basic uncertainty 25 00 125 00 0 01 t 50 digits 25 4 0 20 100 24mA 125 Other technical data Ingress protection in acc with EN 60529 Pollution degree
5. into STORE function On the left upper corner of LCD shows NO XXXX which states current storage serial number e Then press button PEAK HOLD to change into the initial serial number 0000 Press again it will change back On the 23 right upper corner of LCD shows XXXX which states how many current storage is used e Press STORE button again enter into recording interval time set up function On the left upper shows 0000 S which states recording interval time using button and to select the range is 0 255 seconds When the recording interval time is 0000 S then press STORE button again to change into manual recording Press the STORE button again to record once e When the recording interval time is 1 255 S then press STORE button again to start recording automatically from 0000 or XXXX chosen earlier Recording times is showed on the left upper corner data is showed on the right upper corner Due to digitally limitation there is only display preceding four numbers e finish above STORE function press EXIT button shortly 5 20 Data memory clean function If you want to clean all the memory data the steps are e When power off press the EXIT button long time Then turn the switch from OFF to random and release the EXIT button the LCD will flash thrice and meantime buzzer thrice which means all memory data have been cleaned 5 21 Data recall function In order to realise data recall it is necessa
6. the diode under test Forward voltage will typically indicate 0 400 to 0 700V Reverse voltage will in dicate OL Shorted devices will indicate near 0V and an open device will indicate OL in both polarities Having done the measurement disconnect the test leads from the meter 19 5 9 Capacitance measurements To avoid electric shock disconnect power to the unit under test and discharge all capacitors before taking any capaci tance WARNING In order to realise capacitance measurement it is necessary to realise the following actions Set the rotary function switch to the green Q9F ej CAP posi tion Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the positive Q jack Press the MODE button to indicate F Touch the test leads to the capacitor to be tested Read the capacitance value in the display Having done the measurement disconnect the test leads from the meter 5 10 Temperature measurements In order to realise temperature measurement it is necessary to real ise the following actions 20 Set the function switch to the green Temp position Insert the temperature probe into the input jacks making sure to observe the correct polarity Press the MODE button to indicate F or C Touch the temperature probe head to the part whose temperature you wish to measure keep the probe touching the part under test until the reading
7. G MANUAL RANGE SELECTION eren 21 62 6 3 6 4 6 5 6 6 6 7 6 8 6 9 6 10 PARAMETER SETTING UP FUNCTION RELATIVE DATA HOLD FUNCTION PEAK HOLD FUNCTION DISPLAY BACKLIGHT DATA RECORD FUNCTION DATA MEMORY CLEAN FUNCTION DATA RECALL FUNCTION 611 AC DC FUNCTION eee 7 REPLACEMENT OF THE BATTERIES 8 REPLACEMENT OF THE FUSES 27 9 CLEANING AND MAINTENANCE 28 10 STORAGE 28 11 DISMANTLING AND UTILIZATION 29 12 ATTACHMENTS 12 1 TECHNICAL 12 2 STANDARD EQUIPMENT citri rrr tta Hoe Eon He taa gt 33 12 3 MANUFACTURER issues iecore RYE EXTR YR CREER TRE VOU d 34 1 Introduction We appreciate your having purchased our industrial meter The CMM 40 meter is a modern high quality measuring device which is easy and safe to use Please acquaint yourself with the present manual in order to avoid measuring errors and prevent possible problems related to operation of the meter In the present manual we apply three kinds of warnings These are texts in frames which describe possible dangers both for the user and the meter itself The messages starting from the word WARNING describe situations which imply a risk for life or health should the recommendations presented in the present manual not be observed The word
8. Ss OPERATING MANUAL INDUSTRIAL MULTIMETER CMM 40 Version 1 4 TABLE OF CONTENTS 1 INTRODUCTION 4 eere ee 4 2 SAFETY 2 1 INTERNATIONAL SAFETY SYMBOLS eee 7 3 PREPARATION OF THE METER FOR OPERATION ee ooo eo eoe een eno epar ene eee In paa ep Ru 7 4 FUNCTIONAL DESCRIPTION 8 41 MEASUREMENT SOCKETS AND ELEMENTS OF SELECTION OF THE MEASUREMENT 2 2 2 41 111 8 9 4 1 2 Elements of selection of the measurement function 449 42 LED DISPLAY ded 10 4 37 STESTEBADS un teet He REED INI 12 5 MEASUREMENTS VE ETARE 13 51 DC VOLTAGE 5 69 9 13 5 2 AC VOLTAGE MEASUREMENTS 14 5 3 MV VOLTAGE MESUREMENTS 15 54 DC CURRENT MEASUREMENTS 16 5 5 AC CURRENT FREQUENCY DUTY CYCLE MESUREMENTS 17 5 6 RESISTANCE 5 18 57 CONTINUITY MEASUREMENTS 18 5 8 DIODE MEASUREMENTS 19 5 9 CAPACITANCE MEASUREMENTS 20 5 10 TEMPERATURE MEASUREMENTS 20 5 11 FREQUENCY OR DUTY CYCLE MEASUREMENTS 21 5 12 904 20 MA 21 6 SPECIAL FUNCTIONS e eceeeeeeeeeeeees 21 6 1 AUTORANGIN
9. ack For current measurements up to 20A set the function switch to the 10A HZ position and insert the red test lead banana plug into the 10A jack Press the MODE button to indicate DC on the display Remove power from circuit under test then open up circuit at the point where you wish to measure current Touch the black test probe tip to the negative side of the cir cuit Touch the red test probe tip to the positive side of the cir cuit e Apply power to the circuit Read the current in the display Having done measurement disconnect the test leads from the meter 16 5 5 AC current frequency duty cycle measurements ATTENTION Do not make 20A current measurements for longer than 30 seconds Exceeding 30 seconds may cause damage to the meter and or the test leads In order to realise a measurement of AC current it is necessary to realise the following actions Insert the black test lead banana plug into the negative COM jack For current measurements up to 4000 set the function switch to the position and insert the red test lead banana plug into the pA mA jack For current measurements up to 400mA set the function switch to the mA position and insert the red test lead banana plug into the pA mA jack For current measurements up to 20A AC set the function switch to the 10A HZ position and insert the red test lead banana plug into t
10. afety regulations Use great care when making measurements if the voltages are greater than 20VAC rms or 40VDC These voltages are consid ered a shock hazard Before use for non contact AC voltage measurements always test the voltage detector on a known live circuit to verify proper operation Set function switch to the appropriate position before measur ing When measuring volts do not switch to current resistance modes Do not exceed the maximum allowable input range of any func tion Do not apply voltage to meter when resistance function is se lected When changing ranges using the selector switch always dis connect the test leads from the circuit under test Do not exceed the maximum rated input limits It is prohibited to operated the meter is damaged and completely or partially out of order gt Ifthe insulation of the test leads has been damaged If it has been stored for an excessive period of time in inad equate conditions e g if it is humid Repairs must be realised solely by an authorised service work shop WARNING Do not realise measurements with wet hands WARNING Do not realise measurements in environments in which there are inflammable gases Otherwise operation of the meter under such conditions may cause sparking and explosion ATTENTION Input Limits Function Maximum Input V DC or V AC 1000V DC AC rms mA AC DC 500mA ee fast acting 10A 1000 fast acti
11. approx with disable feature Enclosure rere double molded waterproof Compliance with the requirements specified in the following o eM EN 61010 1 usd teme er eed EN 61010 2 032 Quality standard ISO 9001 11 2 Standard equipment The standard set provided by the manufacturer includes the fol lowing components The CMM 40 meter Test leads 2 pieces 9V battery K Type temperature probe Socets protective plugs 2 szt Operating manual Carrying case Warranty card 33 11 3 Manufacturer The manufacturer of the device which also provides guarantee and post guarantee service is the following company SONEL S A ul Wokulskiego 11 58 100 Swidnica Tel 48 74 858 38 60 Fax 48 74 858 38 09 E mail export 2sonel pl Web page www sonel pl Note Service repairs must be realised solely by the manufactur er Made in China for SONEL S A 34
12. ary to real ise the following actions 22 Perform the measurement as described in the operating instructions Press the REL button to store the reading in the display and the REL indicator will appear on the display e Left auxiliary display the margin of initial value and the current value Right auxiliary display the initial reading Main display the reading after REL test Press the EXIT button to exit the relative mode 5 16 DATA HOLD function The hold function freezes the reading in the display Press the HOLD key momentarily to activate or to exit the HOLD function 5 17 PEAK HOLD function The peak hold function captures the peak AC or DC voltage or current The meter can capture negative or positive peaks as fast as 1 millisecond in duration Hold the PEAK button for 2 s MAX will display in left auxiliary display MIN will display in right auxiliary display The meter will update the display each time a lower negative or higher possitive peak occurs Press the EXIT button to exit the peak hold mode Auto Power Off feature will be disabled automatically in this mode 5 18 Display backlight Press the key to turn the backlight on The backlight will au tomatically turn off after SET time Press the button to exit the backlight on mode 5 19 Data record function In order to realise data store it is necessary to do the following In the current testing mode press STORE button one time enter
13. ement indications provided original test leads are used WARNING Connection of inadequate test leads constitutes a risk of electric shock with a dangerous voltage or may be a cause of measurement errors 12 5 Measurements It is recommended to get acquainted thoroughly with the con tents of the present chapter since it describes the measurement systems the manner of realisation of measurements and the basic principles of interpretation of the results 5 1 DC voltage measurements ATTENTION Do not measure DC voltages if a motor on the circuit is being switched ON or OFF Large voltage surges may occur that can damage the meter In order to realise a measurement of DC voltage it is necessary to realise the following actions Set the function switch to the VDC position e with the RANGE button set the measurement range manually if necessary Insert the black test lead banana plug into the negative COM jack Insert the red test lead banana plug into the positive V jack Touch the black test probe to the negative side of the cir cuit Touch the red test probe tip to the positive side of the cir Cuit Read the voltage in the display Having done measurement disconnect the test leads from the meter 13 5 2 AC voltage measurements WARNING Risk of Electrocution The probe tips may not be long enough to contact the live parts inside some 240V outlets for appl
14. fore removing the meter cover In order to replace the fuses it is necessary to do the following Disconnect the test leads from the meter and place rotational selector in the position OFF Remove the battery cover two B screws and the battery Remove the six A screws securing the rear cover Gently remove the old fuse and install the new fuse into the holder Always use fuse of the proper size and value 0 5A 1000V fast blow for the 400mA range SIBA 70 172 40 10A 1000V fast blow for the 20A range SIBA 50 199 06 Replace and secure the rear cover battery and battery cover 27 To avoid electric shock do not operate your meter until the fuse cover is in place and fastened securely WARNING 8 Cleaning and maintenance This MultiMeter is designed to provide years of dependable ser vice if the following care instructions are performed 15 2 KEEP THE METER DRY If it gets wet wipe it off USE AND STORE THE NORMAL TEMPERATURES Temperature extremes can shorten the life of the electronic parts and distort or melt plastic parts HANDLE THE METER GENTLY AND CAREFULLY Dropping it can damage the electronic parts or the case KEEP THE METER CLEAN Wipe the case occasionally with a damp cloth DO NOT use chemicals cleaning solvents or detergents USE ONLY FRESH BATTERIES OF THE RECOMMENDED SIZE AND TYPE Remove old or weak batteries so they do not lea
15. he 10A jack Press the MODE button to indicate AC on the display Remove power from the circuit under test then open up circuit at the point where you wish to measure current Touch the black test probe tip to the neutral side of the circuit Touch the red test probe tip to the hot side of the circuit e Apply power to the circuit Read the current in the display In the 10AAC range right aux iliary display frequency Press and hold the MODE button to indicate Hz Read the frequency in the display Momentarily press the MODE button again to indicate 96 Read the duty cycle in the display Press and hold the MODE button to return to current meas urement 17 Press EXIT for 2 seconds into the function of AC DC Test DC and AC True RMS Having done the measurement disconnect the test leads from the meter 5 6 Resistance measurements ATTENTION Measurements must not be realised in live circuits Capaci tors must be discharged In order to realise a measurement of the resistance it is neces sary to realise the following actions e Setthe function switch to the Q gt ej CAP position Insert the black test lead banana plug into the negative COM jack Insert the red test lead banana plug into the positive Q jack Press the MODE button to indicate Q on the display Touch the test probe tips across the circuit or part under test It is best to disconnect one side
16. hed ON or OFF Large voltage surges may occur that can damage the meter In order to realise a measurement of mV voltage it is necessary to realise the following actions Set the function switch to the mV position with the RANGE button set the measurement range manually if necessary Press the MODE button to indicate DC or or in AC range press EXIT for two seconds and chose AC DC Insert the black test lead banana plug into the negative COM jack Insert the red test lead banana plug into the positive V jack Touch the black test probe tip to the negative side of the cir cuit Touch the red test probe tip to the positive side of the cir cuit Read the mV voltage in the display Having done the measurement disconnect the test leads from the meter 15 5 4 DC current measurements ATTENTION Do not make 20A current measurements for longer than 30 seconds Exceeding 30 seconds may cause damage to the meter and or the test leads In order to realise a measurement of DC current it is necessary to realise the following actions Insert the black test lead banana plug into the negative COM jack For current measurements up to 4000 set the function Switch to the pA position and insert the red test lead banana plug into the pA mA jack For current measurements up to 400mA set the function switch to the mA position and insert the red test lead banana plug into the pA mA j
17. iances because the contacts are recessed deep in the outlets As a result the reading may show 0 volts when the outlet actually has voltage on it Make sure the probe tips are touching the metal contacts inside the outlet before assum ing that no voltage is present ATTENTION Do not measure AC voltages if a motor on the circuit is being switched ON or OFF Large voltage surges may occur that can damage the meter In order to realise a measurement of AC voltage it is necessary to realise the following actions 1 Set the function switch to the VAC Hz position with the RANGE button set the measurement range manually if necessary Insert the black test lead banana plug into the negative COM jack Insert red test lead banana plug into the positive V jack Touch the black test probe tip to the neutral side of the circuit Touch the red test probe tip to the hot side of the circuit Read the voltage in the main display and the frequency in the right auxiliary display Press the MODE button to indicate Hz Read the frequency in the main display Press the MODE button again to indicate 96 Read the of duty cycle in the main display 4 Press EXIT AC DC for 2 seconds into the function of AC DC Test DC and AC True RMS Having done the measurement disconnect the test leads from the meter 5 3 mV voltage measurements ATTENTION Do not measure mV voltages if a motor on the circuit is being switc
18. ing made and is generally the best mode for most measurements For measurement situations requiring that a range be manually selected perform the following 21 Press the RANGE key The display indicator will turn off Press the RANGE key to step through available ranges until you select the range you want exit the manual ranging mode and return to autoranging press EXIT Caution Manual ranging does not apply for the Temperature Conti nuity Diode test mV current 10A and 4 20mA functions 5 14 MAX MIN Press the MAX MIN key to activate the MAX MIN recording mode The display icon MAX will appear The meter left auxiliary display will display and hold the maximum reading and will update only when a new occurs The display icon MIN will appear The right auxiliary display meter will display and hold the minimum reading and will update only when a new min occurs To exit MAX MIN mode press EXIT 5 15 Relative mode The relative measurement feature allows you to make meas urements relative to a stored reference value A reference voltage current etc can be stored and measurements made in comparison to that value The displayed value is the difference between the ref erence value and the measured value Caution Relative mode does not operate in the 4 20mA diode test and continuity function In order to realise relative measurement it is necess
19. k and damage the unit IF THE METER IS TO BE STORED FOR A LONG PERIOD OF TIME the batteries should be removed to prevent damage to the unit The electronic system of the meter does not require maintenance 9 Storage In the case of storage of the device the following recommenda tions must be observed 28 Disconnect all the test leads from the meter Make sure the meter and its accessories are dry In the case the meter is to be stored for a prolonged period of time the battery must be removed from the device 10 Dismantling and utilization Worn out electric and electronic equipment should be gathered selectively i e it must not be placed with waste of another kind Worn out electronic equipment should be sent to a collection point in accordance with the law of worn out electric and electronic equipment Before the equipment is sent to a collection point do not dis mantle any elements Observe the local regulations concerning disposal of packages worn out batteries and accumulators 11 Attachments 11 1 Technical data m v means measured value of standard DC voltage measurement Range Resolution Basic uncertainty 400 00mV 0 01mV 4 0000V 0 0001V 40 000V 0 001V 0 06 m v 4 digits 400 00V 0 01V 1000 0V 0 1V 0 1 5 digits AC voltage measurement True RMS AC DC Range Resolution Basic uncertainty 400 00
20. mV 0 01mV 196 m v 40 digits 4 0000V 0 0001V 40 000V 0 001V us 400 00V 0 01V t 196 m v 30 digits 1000 0V 0 1V frequency range 50 to 1000Hz 29 DC current measurement Range Resolution Basic uncertainty 400 0 01 4000 0 1pA 40 000mA 0 001mA t 196 m v 4 3 digits 400 00mA 0 01mA 10 000A 0 001A 20 30 sec max with reduced accuracy AC current measurement True RMS DC Range Resolution Basic uncertainty 400 0 4000 0 1pA 40 000mA 0 001mA t 1 596 m v 30 digits 400 00mA 0 01mA 10 000A 0 001A 20 30 sec max with reduced accuracy Caution Accuracy is stated at 65 F to 83 F 18 C to 28 C and less than 75 RH AC switch according to the calibration of sine wave It gen erally increase 2 reading 2 full scale if non sine wave in the wave crest less than 3 0 30 Resistance measurement Range Resolution Basic uncertainty 400 000 0 010 0 3 9 digits 4 0000 0 0001 40 000 0 001kQ 400 00kQ 0 01kQ 0 3 m v 4 digits 4 0000MQ 0 0001MQ 40 000MQ 0 001MQ t 296 m v 10 digits Capacitance measurement Range Resolution Basic uncertainty 40 000nF 0 001nF 2 400 00nF 0 01nF 3 5 m v 40 digits 4 0000yF 0 0001 uF 40 00 0
21. ng fuse A AC DC 20A for 30 seconds max every 15 minutes Frequency Resistance Capaci tance Duty Cycle Diode Test 1000V DC AC rms Continuity Temperature 1000V DC AC rms Surge Protection 8kV peak per IEC 61010 2 1 International Safety Symbols cates the user must refer to the manual for further infor mation A This symbol adjacent to another symbol or terminal indi This symbol adjacent to a terminal indicates that under normal use hazardous voltages may be present Double insulation 3 Preparation of the meter for operation Having purchased the meter examine completeness of the con tents of the package Before measurements commence it is necessary to realise the fol lowing actions e sure the conditions of the batteries or accumulators mit to realise measurements e Make sure the casing of the meter and the insulation of the test leads are not damaged e Insert the black test lead into the negative COM terminal and the red test lead into the other positive terminal WARNING Connection of inappropriate or damaged test leads consti tutes a risk of an electric shock with a dangerous voltage 4 Functional description 4 1 Measurement sockets and elements of selection of the measurement function ss R humSA KHz SETAC DC 888 CF 1 Low AUTO Send
22. of the part under test so the rest of the circuit will not interfere with the resistance reading Read the resistance in the display Having done measurement disconnect the test leads from the meter 5 7 Continuity Measurements ATTENTION Measurements must not be realised in live circuits Capaci tors must be discharged In order to realise continuity test it is necessary to realise the follow ing actions e Setthe function switch to the Q gt e CAP position 18 Insert the black lead banana plug into the negative COM jack Insert the red test lead banana plug into the positive Q jack Press the MODE button to indicate and on the display Touch the test probe tips to the circuit or wire you wish to check If the resistance is less than approximately 350 the audible signal will sound If the circuit is open the display will indicate OL Having done the measurement disconnect the test leads from the meter 5 8 Diode Measurements ATTENTION Measurements must not be realised in live circuits Capaci tors must be discharged In order to realise diode test it is necessary to realise the follow ing actions Set the function switch to the green Q9F e CAP position Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the positive Q jack Press the MODE button to indicate and V on the display Touch the test probes to
23. ry to do the following Press STORE lt JRECALL button two seconds to enter into RECALL function On the left upper corner shows XXXX which states current storage serial number On the right upper corner shows XXXX which states how many current storage is used Press button HOLD PeakHOLD shortly once to scan data from 0000 to XXXX continuously Press again then scan again e button to select serial number XXXX on the left upper corner and record data on the right upper corner To finish above RECALL function press EXIT button 24 5 22 Parameter setting up function In order to realise parameter setting up it is necessary to do the following Press the RANGE SETUP button second seconds to enter into SET function Then press SET shortly once change on setting content e Setting content includes in sequence A upper limit buzzer alarm B lower limit buzzer alarm C auto power off time D turn off phonating E backlight time Use buttons to select the parameter Press SET button continuously to switch to setting content till exiting set up to testing mode So the updated setting content is saved If press EXIT button in this period all setting can t be saved 5 23 AC 4 DC function In order to use AC DC function it is necessary to do the fol lowing In all the measuring mode press EXIT button for 2 seconds to enters into AC DC testing The precision is the
24. same as AC measure LCD shows signal Press button EXIT to exit 6 Replacement of the batteries The CMM 40 meter is supplied by means of one 9V battery It is recommended to use alkaline battery Attention When making measurements with a battery s mnemonic on one must take into account additional indefinite ment uncertainty or unstable working of the meter 25 WARNING Should the test leads be left in the sockets during replace ment of the battery there might be a risk of electric shock with a dangerous voltage WARNING To avoid electric shock do not operate the meter until the battery cover is in place and fastened securely Caution If your meter does not work properly check the fuses and batteries to make sure that they are still good and that they are properly inserted In order to replace the battery it is necessary to do the following remove all the test leads from the measurement sockets and place rotational selector in the position OFF Open the rear battery cover by removing two screws B using a Phillips head screwdriver Insert the battery into battery holder observing the correct po larity Put the battery cover back in place Secure with the screws 26 Illustration 3 Battery cover of the CMM 40 meter 7 Replacement of the fuses WARNING To avoid electric shock disconnect the test leads from any source of voltage be
25. stabilizes about 30 seconds Read the temperature in the display Having done the measurement disconnect the probe leads from the meter Caution The temperature probe is fitted with a type K mini connector A mini connector to banana connector adaptor is supplied for connection to the input banana jacks 5 11 Frequency duty cycle measure ments In order to realise frequency or 96 duty cycle measurement it is nec essary to realise the following actions Setthe rotary function switch to the green Hz position Insert the black lead banana plug into the negative COM jack and the red test lead banana plug into the positive Hz jack Touch the test probe tips to the circuit under test Read the frequency on the display Press the MODE button to indicate 96 Read the duty cycle in the display Having done the measurement disconnect the test leads from the meter 5 12 64 20 mA measurements In order to realise measurement it is necessary to realise the follow ing actions Set up and connect as described for DC mA measurements the rotary function switch to the 4 20mA position e meter will display loop current as a with 25 4mA 0 20 100 and 24mA 125 Special functions 5 13 Autoranging manual range selection When the meter is first turned on it automatically goes into au toranging This automatically selects the best range for the meas urements be
26. voltage measurement up to 400mV Hz frequency and duty cycle measurement Q e CAP resistance capacitance and continuity measurement and diode testing Temp Celsius or Fahrenheit temperature measurement 10 Backlight button 11 EXIT AC DC button 12 HOLD PEAKHOLD gt button 13 REL button 4 2 LCD display DBBB sw BABAR SETAC DC TRMS dBMK Q Hz mV uAnF C F SB GB p lt gt E lt gt Low AUTO Send AVG PEAK HOLD High W 10 20 30 40 Illustration 2 LCD display of the CMM 40 meter continuity check mode 10 diode test mode Battery status n nano 10 capacitance micro 10 amps m milli 10 volts amps A Amps kilo 105 ohms F Farads capacitance M mega 105 ohms Q Ohms Hz Hertz frequency percent duty ratio AC alternating current DC direct current degrees Celsius F degrees Fahrenheit MAX maximum MIN minimum No serial number 11 S second SET set up parameter AC DC alternating current direct current TRMS true RMS STO store RCL recall AUTO auto range PEAK peak hold V Volts relative HOLD display hold 4 3 Test leads The manufacturer guarantees correct measur
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