72-7732A 72-7730A
Contents
1. 53 Safety and Compliances _ _ _ _ 53 Physical Specifications _ _ _ 54 General Specifications 55 Feature Summary 56 Basic Specifications 57 Detailed Accuracy Specifications 58 A DC Voltage 58 B AC Voltage 59 C DC Current e 61 TENMA Model 72 7730A 72 7732A OPERATING MANUAL CHAPTER TITLE PAGE DAC Current 62 E Resistance _ _ _ _ 63 F Continuity Test _ 63 G Diode Test ee A A A A A E a A 64 H Capacitance 64 l Frequency _ _ _ _ _ 65 J Temperature C 66 Degrees Celsius 66 Fahrenheit S S z A E a _ 66 K 4 20mA loop current 67 TENMA Model 72 7730A 72 7732A OPERATING MANUAL Chapter 1 Before You Start Overview This Operating Manual covers informa2. TENMA 272 7730 72 7732A Intelligent Digital Multimeters TENMA Model 72 7730A 72 7732A OPERATING MANUAL TABLE OF CONTENTS CHAPTER TITLE PAGE 4 Before You Start 5 Overview 5 Inspection O a ee O 6 Safety Information 7 Rules For Safe Operation 7 International Electrical Symbols 9 2 Getting Acquainted cee 10 Turning the Meter On A a io 10 Battery Considerations 10 Automatic Power Off _ _ 10 Automatic Backlight Off _ 10 Low Battery Indication 11 The Meter Structure 11 Rotary Switch 12 Functional Buttons SR 14 The Meter Functions Vs Displays 21 Selecting the Range 24 Understanding the Display _ 24 TENMA Model 72 7730A 72 7732A OPERATING MANUAL CHAPTER TITLE PAGE Analogue Bar Graph gt 2 2 2 2
3. button decrement or increment an Option Each Setup Selection and Option appears in the primary display in the sequence shown in Table 5 1 47 TENMA Model 72 7730A 72 7732A OPERATING MANUAL Table 5 1 Setup Selections Selection Option Factory Default Description HIGH Ba r HEE a OFF Over the upper limits beeps intermittently Press pto select the digit you want to edit LOW oe E E OFF Over the upper limits beeps intermittently Press p to select the digit you want to edit Y 10 mins power off 20 mins power off 30 mins power off Power off feature is disabled 2 Beeps continuously and icon lights on No beep icon flashes 0 Backlight turn off in 10 seconds Backlight turn off in 20 seconds Backlight turn off in 30 seconds Disable backlight feature 48 TENMA Model 72 7730A 72 7732A OPERATING MANUAL Table 5 1 Setup Selections Selection Option Factory Default Description Analog Zero is in the left hand side Zero is in the A ANTT Bar Zero ls in the center center y A Graph It can only apply to DCV DCI and C F functions Saving Setup Options At each setup Option store your choice and exit setup by press EXIT advance to the next Option by press To exit the Setup mode without saving the present Option press Setup 49 TENMA Model 72 7730A 72 7732A OPERATING MANUAL Chapter 6 Maintenance This chapter pr
4. Frequency measurement Frequency signal duty cycle measurement C F Centigrade temperature measurement Fahrenheit temperature measurement UA S DC current measurement 4004A 40004A Toggle between AC or DC current OA DC current measurement 40mA 400mA Toggle between AC or DC current 4 20mA loop current as reading AN AC or DC current measurement 10A Toggle between AC or DC current 13 TENMA Model 72 7730A 72 7732A OPERATING MANUAL Functional Buttons The buttons activate features that augment the function selected with the rotary switch The buttons are shown in Table 2 2 RECALL lt STORE Press the button once to access the main feature e g STORE To access the first additional feature of the button e g RECALL press and hold the button for over 1 second This additional feature appears right above or on the left hand side of the appropriate keys To access the second additional feature of the button e g press once the button again while the Meter has already entered the first additional feature e g RECALL The second additional feature appears on the right hand side above the appropriate keys The RANGE and EXIT buttons has only one additional feature 14 TENMA Model 72 7730A 72 7732A OPERATING MANUAL Table 2 2 Functional Buttons Button SETUP Description Range feature Exit AUTO and enter MANUAL ranging In MANUAL select next input range EXIT to return to A
5. Y and Y or 2 5GQ mV impedance in parallel with the circuit This loading effect can cause measurement errors in high impedance circuits In most cases the error is negligible 0 1 or less if the circuit impedance is 10kQ or less Special care should be taken when measuring high voltage When voltage measurement has been completed disconnect the test leads from the circuit under test and remove the test leads from the input terminals of the Meter 31 TENMA B Measuring Current A Warning If the fuse burns out during measurement the Meter may be damaged or the operator may be hurt Model 72 7730A 72 7732A OPERATING MANUAL To avoid possible damage to the Meter or to the equipment under test check the Meteris fuses before measuring current Use proper terminals function and range for the measurement Never place the test leads in parallel with any circuit or component when the leads are plugged into the current terminals To measure AC or DC current set up the Meter as Figure 3 2 and proceed as follows 1 Turn off power to the circuit Discharge all high voltage capacitors 2 Insert the red test lead into the mAWA or A terminal and black test lead into the COM terminal 3 If you are using the A terminal set the rotary switch to AW If you are using mApA terminal set the rotary switch to WAN Tor currents below 40000pA Figure 3 2 Currents Measurement mA or max MA for current above 40000uUA 72
6. Button Description Access Method E e n Setup each press to select the digit you want to edit Press the button once after entering e n Recall press to enable SEND feature Setup or Recall or Store mode e n Store press to toggle between clearing all the stored reading or start storing reading from the current index number LIGHT Press to exit certain button functions and the Meter will return Press the button once to the factory default setting Press to turn the backlight on It is possible to toggle between Press and hold the button for over 1 1St and the 2 backlight level and Exit the feature by pressing second this button After exiting the light feature it is necessary to press and hold the button for over 1 second to turn the backlight on again 17 TENMA Model 72 7730A 72 7732A OPERATING MANUAL Table 2 2 Functional Buttons Button Description Access Method gt Press to display max min and average values Press the button once Press EXIT to stop and return to current measurement mode In Setup each press to decrement an Option Press the button once after entering SEND mode _ Press to display max min and average values Press the button once MAXMIN Press EXIT to stop and return to current measurement mode Press to output the data AUTO mode switch off The primary Press and hold display shows SEND the button for over 1 second Press EXIT to
7. exit In Setup each press to decrement an Option Press the button once after entering In Recall each press to go back to the previous stored reading SEND mode In Store each press to decrease a second on the storing interval Press EXIT to exit 18 TENMA Model 72 7730A 72 7732A OPERATING MANUAL Table 2 2 Functional Buttons Button Description Access Method Press to enter relative mode the primary display shows A Press the button once The left secondary display shows the present measurement value The right secondary display shows the stored value The primary display shows the present measurement value minus the stored value Press EXIT to exit relative mode In Setup each press to increment an Option Press and hold the button for over 1 In Recall each press to recall the next stored reading second In Store each press to increase a second on the storing interval When it is at AC measurement mode press the button to Press the button once display AC DC True RMS value in the primary display and Yellow Button the left secondary display AC DC 19 TENMA Model 72 7730A 72 7732A OPERATING MANUAL Table 2 2 Functional Buttons Button CJ Blue Button Access Method Use the blue button to select any rotary switch alternate Press the button once Description function labeled in blue letters Press and hold the Button while turning
8. into the Hz terminal and the black test lead into the COM terminal 2 Set the rotary switch to Hor RW 72 7730A 72 7732A and press BLUE button to select the Hz measurement mode for frequency measurement or for duty cycle measurement The BLUE button cycles among mV frequency and duty cycle 3 Connect the test leads across with the object being measured The measured value shows on the primary display Figure 3 7 Frequency Duty Cycle Measurement 41 TENMA Model 72 7730A 72 7732A OPERATING MANUAL Note e The requirement of Input amplitude a is as follows When 10Hz 40MHz 200 mV lt a lt 30Vrms gt 40MHz Un specified e When frequency measurement has been completed disconnect the connection between the test leads and the circuit under test and remove test leads from the input terminals of the Meter 42 Model 72 7730A 72 7732A OPERATING MANUAL H Measuring Temperature A warning Do not apply voltage to the input terminals when the Meter is in the Temperature Measurement Mode 1 Set the rotary switch to C F the display shows OL Short circuit the test leads to show the room temperature The Meter is default to Celsius C degree unit you can change units by press the BLUE button once you have selected the temperature function Insert the point contact temperature probe into the Meter as figure 10 Place the temperature probe to the object being measured The measured
9. on the Meter to toggle to 4000 counts for all functions It is faster when the Meter is at 4000 counts measurement mode If you turn the meter off then on or if the meter resumes from Automatic Power Off mode the meter will revert back to 40 000 count measurement mode 20 TENMA Model 72 7730A 72 7732A OPERATING MANUAL The Meter Functions Vs Displays Table 2 3 shows the cross reference of function and display Table 2 3 Functions Vs Displays Function Primary Display Right Secondary Display Left Secondary Display DCV The tested DC voltage value No display Full range 4 40 400 1000 ACV The tested AC voltage value The tested frequency value Full range 4 40 400 1000 45 00Hz 100 0kHz DCmv The tested DCmV value No display Full range 400 Q The tested resistance value No display Full range 400 4 40 400 4 40 1 The tested resistance value No display Full range value 400 The tested resistance value No display Full range 4 Hz The tested frequency value No display Full range 40 400 4 40 400 4 40 400 JE The tested capacitance value No display Full range 40 400 4 40 400 4 40 C The tested C value No display 1000 F The tested F value No display 1832 DCpA The tested DCuA value No display Full range 400 4000 21 TENMA Model 72 7730A 72 7732A OPERATING MANUAL Table 2 3 Functions Vs Displays Fu
10. possible electric shock or personal injury replace the battery as soon as the battery icon Ea appears The Meter Structure The Figure 2 1 shows the Meter structure 1 LCD Display 2 Functional Buttons 3 Rotary Switch 4 Input Terminals Figure 2 1 Meter Structure 11 TENMA Rotary Switch Turn the Meter on by selecting any measurement function The Meter presents a standard display for that function The display may also be influenced by some of the choices made in Setup Model 72 7730A 72 7732A OPERATING MANUAL Use the blue button to select any rotary switch alternate function labeled in blue letters When you turn the rotary switch from one function to another a display for the new function appears Button choices made in one function do not carry over into another function The Table 2 1 described each rotary switch position Table 2 1 Rotary Switch Selections a Rotary Switch Function Blue Key Function OFF Turn the Meter off Vv DC voltage measurement Vv AC voltage measurement mV DC millivoltage measurement Hz mV DC millivoltage measurement e Frequency measurement e Frequency signal duty cycle measurement 12 TENMA Model 72 7730A 72 7732A OPERATING MANUAL Table 2 1 Rotary Switch Selections ME ie Sa P Rotary Switch Function Blue Key Function Deon O Resistance measurement e Diode test e Continuity test de Capacitance measurement None Hz
11. used under MANUAL ranging mode 29 TENMA Chapter 3 Making Measurement Introduction Chapter 3 explains how to make measurements Most measurement functions can be selected by using the rotary switch While letters or symbols identify primary functions blue letters or symbols identify alternative functions Press the BLUE button to access these alternate functions A Measuring Voltages A warning To avoid personal injury or damage to the Meter from electrical shock do not attempt to measure voltages higher than 10001 although readings may be obtained 30 Model 72 7730A 72 7732A OPERATING MANUAL Figure 3 1 Voltages Measurement Model 72 7730A 72 7732A OPERATING MANUAL To measure voltage set up the Meter as Figure 3 1 and do the following 1 2 3 Insert the red test lead into the V terminal and the black test lead into the COM terminal Set the rotary switch to Y or Y or CZ Connect the test leads across the object being measured The measured value shows on the display AC measurement displays the True RMS value DC measurement displays the effective value of sine wave mean value response When a ACV function is selected you can press the Yellow Button to view the AC DC True RMS value in the primary display To exit please EXIT button The BLUE button cycles among mV frequency and duty cycle TENMA Note When measuring voltage the Meter acts around a 10MQ
12. value shows on the display after several seconds TENMA C L Figure 3 8 Temperature Measurement 43 TENMA Note O Place the Meter in an environment of 18 C 23 C otherwise false reading may be obtained especially in testing low temperature e The included point contact temperature probe can only be used with temperature 230 C below e The included point contact temperature probe is suitable for temperature measurements below 440 degrees Fahrenheit When temperature measurement has been completed disconnect the connection between the temperature probe and the input terminals of the Meter I 4 20 mA loop currentas readout It shows the mA measured value or output level in in a 4 20mA scale To use 4 20mA Loop feature connect the Meter as follows Y 4 20mA 1 Set the rotary switch toma and press BLUE button to select 4 20mA feature 44 Model 72 7730A 72 7732A OPERATING MANUAL 2 The rest procedure please follow B Measuring Current DC current measurement Figure 3 2 3 When the readings obtained is e lt 4mA the primary display shows LO e 4mA the primary display shows 0 20mA the primary display shows 100 e gt 20mA the primary display shows HI TENMA Model 72 7730A 72 7732A OPERATING MANUAL Introduction Chapter 4 shows you how to use store recall and communication features available on the Meter Storing and Clearing Re
13. 3 0 c A residual reading of 80 digits with test leads shorted will not affect stated accuracy d When frequency is lower than 100kHz the accuracy guarantee range 10 100 e When making AC DC measurment the accuray need to add 1 35 digits of reading based on the above table O At 10A range a When the measured current is lt 5A continuous measurement is allowed b When the measured current is between 5A 10A continuous measurement lt 10 seconds and interval more than 15 minutes 62 Model 72 7730A 72 7732A OPERATING MANUAL E Resistance Range Resolution Accuracy TENMA Overload Protection 72 7730A 72 7732A 72 7730A 72 7732A 200Q 40002 0 0190 0 4 20 test leads 0 3 8 test leads open circuit value open circuit value 2kQ 4kQ 0 0001k22 0 4 2 0 3 8 1000V 20kQ 40kQ 0 001kQ di Gs 200kQ 400kQ 0 01kQ 0 8 20 0 5 20 2MQ 4MQ 0 0001MQ 1 40 1 40 20MQ 40MQ 0 001MQ 1 5 40 1 5 40 F Continuity Test Range Resolution Overload Protection VI 0 019 1000V Remarks e Open circuit voltage approximate 1 2V e The buzzer does not sound when the test resistance is gt 60Q e The beeper comes on continuously for open conditions that is test resistance is lt 40Q 63 TENMA Model 72 7730A 72 7732A OPERATING MANUAL G Diode Test Range Resolution Overload Protection gt 0 0001V 1000V Remarks e Open
14. 752 F 0 1F 1 5 50 1000V 752 F 1832 F 2 18 Remarks e Included is a K Type nickel chromium nickel silicon point contact temperature probe which could only measure temperature below 230 C If you want to measure temperature higher than 230 C you must use the rod contact temperature probe 66 Model 72 7730A 72 7732A OPERATING MANUAL K 4 20 mA loop current Range Resolution TENMA 4 20mA 0 01 Accuracy Overload Protection 1 50 0 5A 1000V fast type fuse 6 3X32mm Remarks When the readings obtained is O lt 4mA the primary display shows LO O 4mA the primary display shows 0 20mA the primary display shows 100 e gt 20mA the primary display shows HI kk END kk 67 TENMA Model 72 7730A 72 7732A OPERATING MANUAL Copyright 2006 Tenma Test Equipment All rights reserved Tenma Test Equipment 405 S Pioneer Blvd Springboro Ohio 45066 www tenma com 68
15. 7730A is 20000UA 32 TENMA Model 72 7730A 72 7732A OPERATING MANUAL DC measurement is default press blue button to select AC measurement Open the circuit path to be tested Touch the red testing leads to the more positive side of the break touch the black probe to the more negative side of the break Reversing the leads will produce a negative reading but will not damage the Meter Turn on power to the circuit then read the display AC measurement displays the True RMS value DC measurement displays the effective value of sine wave mean value response Turn off power to the circuit and discharge all high voltage capacitors Remove the Meter and restore the circuit to normal operation Note O f the value to be measured is unknown use the maximum measurement position and reduce the range step by step until a satisfactory reading is obtained e When the measured current is lt 5A continuous measurement is allowed When the measured current is between 5A 10A continuous measurement lt 10 seconds and interval more than 15 minutes e When current measurement has been completed disconnect the connection between the test leads and the circuit under test and remove test leads from the input terminals of the Meter When a ACA function is selected you can press the Yellow Button to view the AC DC True RMS value in the primary display To exit please EXIT button 33 TENMA C Measuring Resist
16. 9 Using MAX MIN 29 3 Making Measurements C 30 Introduction 30 A Measuring Voltage 30 B Measuring Current 9 32 C Measuring Resistance 34 D Testing for Continuity _ _ _ _ 35 E Testing Diodes 37 F Measuring Capacitance 6 E 39 G Measuring Frequency Duty Cie os 41 H Measuring Temperature 43 4 20mA loop current as readout 44 4 Using Stores Recall and Send Features 45 Introduction S 45 Storing and Clearing R Readings _ 45 Recalling Stored pa _ 46 Using Send A eee 46 TENMA Model 72 7730A 72 7732A OPERATING MANUAL CHAPTER TITLE PAGE 5 Changing the Default Setting _ _ _ _ 47 Introduction _ _ _ _ _ _ 47 Selecting Setup Options _ _ _ _ _ _ 47 6 Maintenance 50 A General Service ee E A 50 B Replacing the Fuses L 51 C Replacing the Battery _ _ _ _ _ _ 52 7 Specifications
17. Meter e When testing the resistance signal from the calibrator it is necessary to press and hold the RANGE while turning on the Meter to change the maximum display to 4000 counts but the accuracy remains unchanged When resistance measurement has been completed disconnect the connection between the test leads and the circuit under test and remove test leads from the input terminals of the Meter D Testing for Continuity A Warning Do not apply voltage to the test leads while the meter is in the Continuity measurement mode To avoid possible damages to the Meter or to the devices under test disconnect circuit power and discharge all the high voltage capacitors before measuring continuity To test for continuity set up the Meter as Figure 3 4 and do the following 1 Insert the red test lead into the 2 terminal and the black test lead into the COM terminal 2 Set the rotary switch to Q gt press BLUE button to select 0 measurement mode and connet the test leads across with the object being tested 3 The beeper comes on continuously for open conditions The beeper will sound for conditions of less than lt 500 The BLUE button cycles among resistance continuity and diode 35 TENMA Note e When in the continuity mode the test leads will have open circuit voltage of approximately 1 2VDC The resistance measurement range is 4000hm e When continuity measurement has been completed disconnect the conne
18. UTO AUTO is default Access Method Press the button once Testing resistance signal from calibrator When testing resistance signal from calibrator it is necessary to press this button to change the maximum display to 4000 counts but the accuracy remains unchanged Press and hold the button while turning on the Meter Setup feature Access Setup selections the display shows SET In the Setup mode each press of SETUP button steps to the next Selection Press and hold the button for more than 1 second 15 TENMA Model 72 7730A 72 7732A OPERATING MANUAL Table 2 2 Functional Buttons Button Description Access Method pa Store feature Press the button Store the current measurement value Press EXIT to exit once the Store feature Recall feature Press and hold the button for over 1 Recall the stored value Press EXIT to exit the Recall feature second Setup feature Press the button In Setup press to select OFF at the selection of HIGH and LOW once after entering Setup mode peak HOLD gt Hold feature Press the button once Press HOLD to freeze the displayed value Press EXIT to release the display Peak Hold feature Press and hold the button for over 1 Press to access Peak Hold feature the primary display second shows PEAK HOLD Press EXIT to exit 16 TENMA Model 72 7730A 72 7732A OPERATING MANUAL Table 2 2 Functional Buttons
19. adings To store readings proceed as follows Press STORE once STO and no xxxx appears to confirm the operation and the left secondary display shows the current measurement reading Press to toggle between clearing the stored readings and start from the first readings or start from the last stored reading Right secondary display shows the original number of records O Press STORE the second time STO appears The left secondary display shows the storing time interval in second it is preset to zero To change the interval Chapter 4 Using Store Recall amp Send Features in second by pressing or button The interval can be as high as 255 seconds or as low as 0 second Press and hold STORE to access the quick setting Press STORE the third time STO and no appears The left secondary display shows the index number increase one The right secondary display shows the value of the corresponding index number the primary display shows the current measurement reading If there is not set time to store the reading each press of STORE to store one reading An index number increase one The maximum number of stored reading is 100 and 9999 for 72 7732A When the stored readings memory is full the Meter will stop storing data To exit press EXIT Automatic power off feature is disabled while the meter is in this mode 45 TENMA Model 72 7730A 72 7732A OPERATING MANUAL Recalling Stored Readings Using Send Whe
20. ance A Warning Do not apply voltage to the test leads while the meter is in the Resistance measurement mode Model 72 7730A 72 7732A OPERATING MANUAL To avoid possible damages to the Meter or to the devices under test disconnect circuit power and discharge all the high voltage capacitors before measuring resistance To measure resistance set up the Meter as shown in Figure 3 3 and follow the following procedure 1 Insert the red test lead into the Q terminal and the black test lead into the COM terminal 2 Set the rotary switch to Q 1 press BLUE button to select Q measurement mode 3 Connect the test leads across with the object being measured The measured value shows on the display The BLUE button cycles among resistance continuity Figure 3 9 Restotance Measurement and diode 34 TENMA Model 72 7730A 72 7732A OPERATING MANUAL Note e When measuring low resistance the test leads can add 0 1 to 0 20 of error to resistance measurement To test the leads touch the probe tips together and read the resistance of the leads If necessary you can press RELA to automatically subtract this value e For high resistance measurement gt 1MQ it normally requires several seconds to obtain a stable reading In order to obtain precision readings use the test lead as short as possible e The LCD displays OL indicating open circuit or the tested resistor value is higher than the maximum range of the
21. circuit voltage approximate 2 8V e A good silicon junction drops between 0 5V and 0 8V H Capacitance Range Accuracy Resolution Overload 72 7730A 72 7732A 72 7730A 72 7732A Protection 20nF 0 00inF 1 2 20 capacitance 1 20 capacitance value alue of open circuit test leads of open circuit test leads anne GAS 1 2 20 1 2 20 1000V 2uF 4uF 0 0001 UF 20uF 40pF 0 001pF 1 2 40 2004F 400yF 0 01pF 1 5 40 1 2 20 2mF 4mF 0 0001mF 5 40 5 20 20mF 40mF 0 001 mF Not specified Not specified 64 TENMA Model 72 7730A 72 7732A OPERATING MANUAL I Frequency Range Resolution Accuracy Overload Protection 72 7730A 72 7732A 72 7730A 72 7732A 20Hz 0 001Hz 200Hz 0 01Hz 2kHz 0 0001kHz 20kHz 0 001kHz 0 1 15 0 01 8 1000V 200kHz 400kHz 0 01kHz 2MHz 4MHz 0 0001MHz 20MHz 40MHz 0 001MHz 200MHz 400MHz 0 01MHz _ Not Specified Not Specified Remarks e Input amplitude a as follows DC electric level is zero When 10Hz 40MHz 200mV lt a lt S 30Vrms When gt 40MHz Not specified 65 TENMA J Temperature Model 72 7730A 72 7732A OPERATING MANUAL Degrees Celsius 40 C 40 C 3 30 40 C 400 C 0 1 C 1 30 1000V 400 C 1000 C 2 10 Fahrenheit Range Resolution Accuracy Overload Protection 40 F 32 F 4 50 32 F
22. ction between the test leads and the circuit under test and remove test leads from the input terminals of the Meter Model 72 7730A 72 7732A OPERATING MANUAL Figure 3 4 Continuity Test 36 TENMA Model 72 7730A 72 7732A OPERATING MANUAL E Testing Diodes A warning Do not apply voltage to the test leads while the meter is in the Diode test mode To avoid damages to the Meter or to the devices under test disconnect circuit power and discharge all the high voltage capacitors before testing diodes Use the diode test to check diodes transistors and other semiconductor devices The diode test sends a current through the semicondutor junction then measures the voltage drop across the junction A good silicon junction drops between 0 5V and 0 8V To test the diode out of a circuit set up the Meter as Figure 3 5 and proceed as follows 1 Insert the red test lead into the 2 terminal and the black test lead into the COM terminal l 2 Set the rotary switch to Q gt and press BLUE Figure 3 5 Diode Test button to select gt measurement mode 37 TENMA Model 72 7730A 72 7732A OPERATING MANUAL 3 For forward voltage drop readings on any semiconductor e When diode testing has been completed disconnect component place the red test lead on the component s the connection between the test leads and the circuit anode and place the black test lead on the componentis under test and remove test lea
23. ds from the input cathode The red test lead polarity is while the black terminals of the Meter test lead polarity is The measured value shows on the display The BLUE button cycles among resistance continuity and diode Note O In a circuit a good diode should still produce a forward voltage drop reading of 0 5V to 0 8V however the reverse voltage drop reading can vary depending on the resistance of other pathways between the probe tips e Connect the test leads to the proper terminals as said above to avoid error display e The LCD will display OL indicating either open circuit or wrong polarity connection e The unit of diode is volt V displaying the positive connection voltage drop value O Open circuit voltage approximate 2 8V 38 TENMA Model 72 7730A 72 7732A OPERATING MANUAL F Measuring Capacitance A warning To ensure accuracy the meter will first internally discharge the capacitor under test DIS C will show on the display Depending upon the size of the capacitor and the amount of discharge required this process may be somewhat slow To avoid damage to the Meter or to the equipment under test disconnect circuit power and discharge all high voltage capacitors before measuring capacitance Use the DC Voltage function to confirm that the capacitor is discharged Black To measure capacitance set up the Meter as shown in Figure 3 6 and proceed as follows 1 Insert t
24. e 610 3X38mm Fuse 2 10A 1000V fast type fuse 6 3X32mm O Rejoin the case bottom and case top and install the 5 screws Figure 6 1 Fuse Replacement Replacement of a fuse is seldom required a blown fuse is always the result of improper operation 51 TENMA C Replacing the Battery A Warning To avoid false readings which could lead to possible electric shock or personal injury replace the battery as soon as the battery indicator Ed appears Model 72 7730A 72 7732A OPERATING MANUAL Make sure the test leads are disconnected from the circuit being tested before opening the case bottom Follow Figure 6 2 and proceed as follows to replace the battery e Turn the rotary switch to OFF and remove all connections from the terminals Remove the screw from the battery compartment and separate the battery compartment from the case bottom O Replace with a new 6F22 9V battery O Rejoin the case bottom and battery compartment and reinstall the screw Battery Figure 6 2 Battery Replacement 52 TENMA Model 72 7730A 72 7732A OPERATING MANUAL Chapter 7 Specifications Safety and Compliances Maximum Voltage between any Terminal and Ground Refer to different range input protection voltage Certification CE IEC 61010 CAT III1000V CAT IV 600V overvoltage and Compliances double insulation standard A Fused Protection for pAmA input terminal 0 5A 1000V fast type fuse 0 10 3X38
25. e amp Computer Interface Software 1 piece 8 Carrying Bag 1 piece 9 9V Battery NEDA 1604 6F22 006P 1 piece In the event that items are missing or damaged please contact your dealer immediately 6 TENMA Model 72 7730A 72 7732A OPERATING MANUAL Safety Information This Meter complies with the standards IEC61010 safety measurement requirement in pollution degree 2 overvoltage category CAT III 1000V CAT IV 600V and double insulation CAT Ill Distribution level fixed installation with smaller transient overvoltage than CAT IV CAT IV Primary supply level overhead lines cable systems etc Use the Meter only as specified in this operating manual otherwise the protection provided by the Meter may be impaired In this manual a Warning identifies conditions and actions that may pose hazards to the user or may damage the Meter or the equipment under test A Note identifies the information that user should pay attention to International electrical symbols used on the Meter and in this Operating Manual are explained on page 9 Rules For Safe Operation A Warning To avoid possible electric shock or personal injury and to avoid possible damage to the Meter or to the equipment under test adhere to the following rules e Before using the Meter inspect the case Do not use the Meter if it is damaged or the case or part of the case is removed Look for cracks or missing plastic Pay attentio
26. econd kHz Kilohertz 1x103 or 1000 hertz MHz Megahertz 1x106 or 1 000 000 hertz mV V V Volts The unit of voltage mV Millivolt 1x10 3 or 0 001 volts HA mA A A Amperes amps The unit of current mA Milliamp 1x1073 or 0 001 amperes pA Microamp 1x10 6 or 0 000001 amperes 26 TENMA Model 72 7730A 72 7732A OPERATING MANUAL Table 2 4 Display Features No Symbol Meaning 9 nF yF Farad The unit of capacitance mF nF Nanofarad 1x10 9 or 0 000000001 farads UF Microfarad 1x10 6 or 0 000001 farads mF Millifarad 1x10 3 or 0 001 farads 10 Y Automatic power off feature is on 11 Dn Continuity test 12 STO Data store is on RCL Data recall is on 13 A The relative mode is on to display the present value minus the stored value 14 LOW The indicator for the lowest setup limit HIGH The indicator for the highest setup limit 15 AUTO The Meter is in the auto range mode in which the Meter automatically selects the range with the best resolution 16 SEND Data output is in progress 27 TENMA Model 72 7730A 72 7732A OPERATING MANUAL Table 2 4 Display Features 28 No Symbol Meaning 17 70 Backlight feature is on 18 HOLD Data hold mode is active 19 PEAK HOLD Peak hold mode is active 20 Diode test 21 O Frequency signal duty cycle e 4 20mA loop current as reading 22 OL The input value is
27. g paragraphs describe several techniques used to conserve battery power Automatic Power Off The display blanks and the Meter goes into isleepi mode after a set period of inactivity While in Sleep mode pressing the blue button or turning the rotary switch will reactivate the Meter The Meter then returns to the display for the function selected with the rotary switch all previously activated button features are discarded 10 Model 72 7730A 72 7732A OPERATING MANUAL Chapter 2 Getting Acquainted The automatic power off is preset to 10 minutes From the Setup menu see Chapter 5 you could specify a time 10 minutes 20 minutes 30 minutes or OFF If you set to OFF the Meter retains on until you turn the rotary switch to OFF or the battery becomes too weak Automatic Backlight Off Press LIGHT button to turn the backlight on and press LIGHT again to turn it off Press EXIT to exit the feature Press LIGHT to select the backlight level low or high In Setup menu see Chapter 5 you could specify a time to automatically turn off the backlight 10 seconds 20 seconds 30 seconds or OFF If the period is set to OFF the backlight feature is disabled TENMA Model 72 7730A 72 7732A OPERATING MANUAL Low Battery Indication A constant battery icon Ea in the upper left corner of the display notifies you that the batteries are low and should be replaced A Warning To avoid false readings which could lead to
28. he red test lead into the 7 terminal and the black test lead into the COM terminal Figure 3 6 Capacitance Measurement 39 TENMA Model 72 7730A 72 7732A OPERATING MANUAL 2 Set the rotary switch to AE measurement mode e When capacitance measurement has been the Meter may display a fixed reading which is a completed disconnect the connection between the internal distributed capacitor value For best accuracy test leads and the circuit under test and remove test when testing capacitors less than 10nF the internal leads from the input terminals of the Meter distributed capacitor value should be subtracted from the reading To improve the measurement accuracy of small value capacitors less than 10nF press RELA with the test leads open to subtract the residual capacitance of the Meter and leads 3 It is recommended that the short test clip leads be used for capacitance measurement Note e The LCD displays OL indicating the tested capacitor is shorted or it exceeds the maximum range S Capacitors larger than 400pF take longer time The analogue bar graph shows the time left before finishing the measurement 40 TENMA Model 72 7730A 72 7732A OPERATING MANUAL G Measuring Frequency Duty Cycle A Warning To avoid personal injury please do not attempt to input voltage higher than 30V rms To measure frequency and duty cycle connect the Meter as Figure 3 7 and do the following 1 Insert the red test lead
29. ications Accuracy of reading number of least significant digits guarantee for 1 year Operating temperature 18 C 28 C Relative humidity 75 RH A DC Voltage Accuracy 72 7730A 72 7732A 0 01mV 0 05 5 0 025 5 Around 2 5GQ 0 0001V Overload Protection Input Impedance Resolution 72 7730A 72 7732A 200mV 0 08 5 0 05 5 1000N Around 10MQ 1000V 0 1V 0 1 8 58 Model 72 7730A 72 7732A OPERATING MANUAL TENMA B AC Voltage AC DC measurement is available Range Bandwidth oe Input Impedance 72 7730A 72 7732A 72 7730A 72 7732A 2V 45Hz 1kHz 0 6 40 0 4 30 1kHz 10kHz 3 40 3 30 10kHz 100kHz 7 40 6 30 20V 45Hz 1kHz 0 6 40 0 4 30 1kHz 10kHz 3 40 3 30 10kHz 100kHz 7 40 6 30 Approx 10MQ 200V 45Hz 1kHz 0 6 40 0 4 30 1kHz 10kHz 5 40 5 30 10kHz 100kHz Not Specified Not Specified 1000V 45Hz 1kHz 1 2 40 1 30 1kHz 5kHz 6 40 5 30 5kHz 10kHz 10 40 10 30 59 TENMA Model 72 7730A 72 7732A OPERATING MANUAL Remarks Overload Protection 1000V e Display a True rms are valid from 10 of range to 100 of range b AC crest factor can be up to 3 0 except 1000V where it is 1 5 c A residual reading of 80 digits with test leads shorted will not affect stated accuracy d When freque
30. l 72 7732A 2000 counts Model 72 7730A Right Secondary 4000 counts Model 72 7732A 2000 counts Model 72 7730A Bar Graph 40 segments updates 10 times second Bright backlight for clear readings in poorly lighted areas The Meter automatically selects best range AC DC True RMS AC RMS Choices for AC only or AC DC readings Data Hold Holds readings on display Continuity Beeper sounds for resistance readings below threshold Bar Graph 40 segments Duty Cycle Measure signal on or off time in MAX MIN Mode Record maximum and minimum Battery Access Door 56 Easy battery replacement TENMA Model 72 7730A 72 7732A OPERATING MANUAL Basic Specifications Function DC Voltage AC Voltage True RMS Ranges Description 0 to 1000V 0 to 1000V 100kHz bandwidth Basic Accuracy DC Voltage 72 7730A 72 7732A 0 05 AC Voltage 72 7730A 72 7732A 0 6 STORE Readings DC Current O to 10A 5 10A for lt 10 seconds interval gt 15 minutes AC Current True RMS O to 10A 5 10A for lt 10 seconds interval gt 15 minutes Resistance 0 to 40MQ Capacitance 0 to 40mF Frequency 0 400MHz Temperature 40 C 1000 C 40 F 1832 F Up to 100 readings or 9999 reading for 72 7732A may be saved by the user ina memory These readings may be viewed by using Recall feature 57 TENMA Model 72 7730A 72 7732A OPERATING MANUAL Detailed Accuracy Specif
31. mm A Fused Protection for A input terminal 10A 1000V fast type fuse 6 3X32mm 53 TENMA Physical Specifications Model 72 7730A 72 7732A OPERATING MANUAL Display LCD Primary display 40 000 counts model 72 7732A 20 000 counts model 72 7730A Updates 2 3 times second Two secondary displays 4000 counts model 72 7732A 2000 counts model 72 7730A Analog 40 segments updates 10 times second Operating Temperature 0 C 40 C 322F 104 F Storage Temperature 10 C 50 C 14 C 122 C Relative Humidity lt 75 0 C 30 C below lt 50 30 C 40 C Battery Type 9V NEDA 1604 or 6F22 or 006P Electromagnetic Compatibility e In a radio field of 1 V m below Overall Accuracy Specified Accuracy 5 of Range e Ina radio field of 1 V m above No assigned accuracy is specified Dimensions H x W x L 7 X 3 3 X1 5 177X 85X40mm Weight Approx 340g 12 oz including battery 54 TENMA Model 72 7730A 72 7732A OPERATING MANUAL General Specifications Range Auto Polarity Auto Overload Display OL Except at 4 20mA loop range displays HI or LO Low Battery Display EA 55 TENMA Feature Summary Tri Digital Displays Analogue Bar Graph Backlight with 2 brightness levels Autorange Model 72 7730A 72 7732A OPERATING MANUAL Primary 40 000 counts Model 72 7732A 20 000 counts Model 72 7730A Left Secondary 4000 counts Mode
32. n to the insulation around the connectors O Inspect the test leads for damaged insulation or exposed metal Check the test leads for continuity Replace damaged test leads with identical model number or electrical specifications before using the Meter e Do not apply more than the rated voltage as marked on the Meter between the terminals or between any terminal and ground e To prevent potential damage to the meter do not change the position of the rotary switch while making measurements TENMA Model 72 7730A 72 7732A OPERATING MANUAL e When the Meter working at an effective voltage over 60V in DC or 30V rms in AC special care should be taken for there is danger of electric shock e Use the proper terminals function and range for your measurements e If the value to be measured is unknown use the maximum measurement position e Do not use or store the Meter in an environment of high temperature humidity explosive inflammable and strong magnetic field The performance of the Meter may deteriorate after dampened e When using the test leads keep your fingers behind the finger guards e Disconnect circuit power and discharge all high voltage capacitors before testing resistance continuity diodes e Before measuring current check the Meter s fuses and turn off power to the circuit before connecting the Meter to the circuit O Replace the battery as soon as the battery indicator Ea appears With a low batte
33. n using a Send feature please refer to the Installation Use the following procedure to recall the stored reading Guide of the included CD ROM O Press RECALL to recall the stored value and RCL appears to confirm the operation e The left secondary display shows the index number NO XXXX e The primary display shows the corresponding recalled data e The right secondary display shows the total number of the stored data O Press K button to enable the SEND feature to export the data to the computer via USB The software shows the data storing time and also the data value After the data transferring is completed the SEND feature will be disabled automatically O Press or button to view additional stored reading Press and hold RECALL to access quick recalling e Press EXIT to exit recalling 46 TENMA Model 72 7730A 72 7732A OPERATING MANUAL Chapter 5 Changing the Default Setting Introduction The Meter allows you to change the default operating configuration by changing setup options made at the factory These settings are stored and can be changed in the Setup mode using the procedure described in this chapter Selecting Setup Options To enter the Setup mode turn the Meter on and press and hold SETUP button for over 1 second It is recommended to change the default setting only when the Meter is at DCV measurement mode In the Setup mode each press of SETUP button steps to the next Selection Each press of or
34. nction Primary Display Right Secondary Display Left Secondary Display ACpA The tested ACA value The tested frequency value Full range 400 4000 45 00Hz 10 00kHz DCmA The tested DCmA value No display Full range 40 400 ACmA The tested ACmA value The tested frequency value Full range 400 4000 45 00Hz 10 00kHz DCA The tested DC current value No display Full range 10 ACA The tested AC current value The tested frequency value Full range 10 45 00Hz 10 00kHz STO The current measurement The value of the corresponding Index number increase one reading index number Index number no 0001 no0 0100 22 TENMA Model 72 7730A 72 7732A OPERATING MANUAL Table 2 3 Functions Vs Displays Function Primary Display Right Secondary Display Left Secondary Display RCL The recalled value The total number of stored value Index number no 0001 no 0100 MAX MIN Chapter 2 Getting Acquainted Using MAX MIN RELA The present measurement value The stored value The present measurement value minus the stored value 23 TENMA Selecting the Range Press RANGE to select either a fixed range or the autorange feature Autoranging AUTO lighted in the display always comes on initially when you select a new function In autorange the Meter selects the lowest input range possible ensuring that the reading appears with the highest available resolution If AUTO is already on press RANGE t
35. ncy is lower than 100kHz the accuracy guarantee range 10 100 e When making AC DC measurment the accuray need to add 1 35 digits of reading based on the above table 60 TENMA Model 72 7730A 72 7732A OPERATING MANUAL C DC Current Accuracy Resolution Overload Protection 72 7730A 72 7732A 72 7730A 72 7732A 200uA 0 01pA 0 1 15 20004A 40004A 0 1pA 0 15 20 0 5A 1000V fast type fuse 10 3X38mm 20mA 0 001mA 0 15 15 200mA 400mA 0 01mA 10A 0 001A 0 7 30 0 5 30 4094 10001 fast type fuse 6 3X32mm Remarks At 10A range e When the measured current is lt 5A continuous measurement is allowed e When the measured current is between 5A 10A continuous measurement lt 10 seconds and interval more than 15 minutes 61 TENMA Model 72 7730A 72 7732A OPERATING MANUAL D AC Current AC DC measurement is available di Resolution Bandwidth Accuracy Overload Protection 72 7730A 72 7732A 72 7730A 72 7732A 200A 400pA 0 01UA 45Hz 1kHz 0 8 15 0 7 15 2000pA 40004A 0 1UA 1kHz 10kHz 1 5 40 0 5A 1000V fast type 20mA 40mA 0 001mA 1 40 fuse 4 10 3X38mm 200mA 400mA 10A 45Hz 1kHz 2 20 10A 1000V fast type 1kHz 10kHz 6 40 5 40 fuse 6 3X32mm Remarks e Display a True rms are valid from 10 of range to 100 of range b AC crest factor can be up to
36. o enter MANUAL ranging in the present range You can then select the next manual range each time you press RANGE Return to autoranging by press EXIT Note that there is no MANUAL ranging on REL feature Understanding the Display Display features are shown in Figure 2 2 and described in Table 2 4 24 Model 72 7730A 72 7732A OPERATING MANUAL 0 8 0 8 ggg AC DC TrueRMS MkQHz mV PAT 788080 AALOWAUTOSEND cen Peak HOLDHI HPF ETT ES 04 12 02 Figure 2 2 Display Features TENMA Model 72 7730A 72 7732A OPERATING MANUAL Table 2 4 Display Features No Symbol Meaning 1 MAX Maximum reading displayed MIN Minimum reading displayed 2 No The sequence of the reading 3 C F Degrees Celsius default or Fahrenheit 4 Indicates negative reading 5 EA The battery is low Warning To avoid false readings which could lead to possible electric shock or personal injury replace the battery as soon as the battery indicator appears 6 SET Setup feature is on 25 TENMA Model 72 7730A 72 7732A OPERATING MANUAL Table 2 4 Display Features No Symbol Meaning TrueRMS Indicator for True RMS value AC DC For DCV and DCA functions reading represents the True RMS total of AC and DC measurements 9 O KQO MQ Q Ohm The unit of resistance kQ Kilohm 1x103 or 1000 ohms MQ Megaohm 1x106 or 1 000 000 ohms Hz kHz MHz Hz Hertz The unit of frequency in cycles s
37. ovides basic maintenance information including battery and fuse replacement instruction Z warning Do not attempt to repair or service your Meter unless you are qualified to do so and have the relevant calibration performance test and service information A General Service Periodically wipe the case with a damp cloth and mild detergent Do not use abrasives or solvents e To clean the terminals with cotton bar with detergent as dirt or moisture in the terminals can affect readings e Turn the Meter to OFF when it is not in use O Remove the battery when the meter will not be used for a long period of time O Do not use or store the Meter in a place of humidity high temperature explosive inflammable and strong magnetic field 50 TENMA Model 72 7730A 72 7732A OPERATING MANUAL B Replacing the Fuses A Warning To avoid electrical shock or arc blast or personal injury or damage to the Meter use specified fuses ONLY in accordance with the following procedure Follow Figure 6 1 and proceed as follows to replace the Meteris fuse e Turn the rotary switch to OFF and remove all connections from the terminals O Remove the 5 screws from the case bottom 6 Remove the fuse by gently prying one end loose then take out the fuse from its bracket O Install ONLY replacement fuses with the identical type and specification as follows and make sure the fuse is fixed firmly in the bracket Fuse 1 0 5A 1000V fast type fus
38. ry the Meter might produce false readings that can lead to electric shock and personal injury e When servicing the Meter use only the same model number or identical electrical specifications replacement parts e The internal circuit of the Meter shall not be altered at will to avoid damage of the Meter and any accident e Soft cloth and mild detergent should be used to clean the surface of the Meter when servicing No abrasive and solvent should be used to prevent the surface of the Meter from corrosion damage and accident e The meter is suitable for indoor use only e Turn off the meter when not in use Remove batteries if the meter is not to be used for a long period of time e Routinely check the battery for leaks and replace immediately of leaks appear A leaking battery will permanently damage the Meter TENMA Model 72 7730A 72 7732A OPERATING MANUAL International Electrical Symbols Symbols used on the Meter and in this manual are explained in Table1 2 dl Table 1 2 International Electrical Symbols AC or DC Measurement DC Measurement AC Measurement Ground Double Insulated Warning Refer to the Operating Manual aE par Low Battery Conforms to Standards of European Union TENMA Turning the Meter On To turn the Meter on turn the rotary switch from OFF to any switch setting Battery Considerations The Meter uses one 9V Battery NEDA 1604 6F22 006P The followin
39. tion on safety and cautions Please read the relevant information carefully and observe all the Warnings and Notes strictly A Warning To avoid electric shock or personal injury read the Safety Information and Rules for Safe Operation carefully before using the Meter Digital Multimeter 72 7730A hereafter referred to as the Met r is a 20 000 count 4 1 2 digit Digital Multimeter 72 7732A hereafter referred to a amp the Met r is a 40 000 count 4 3 4 digit highly reliable auto ranging instrument It will measure AC voltage and current DC voltage and current Resistance Capacitance Frequency Diodes Continuity Relative Mode AC True RMS AC DC Low Battery Display Double Display Backlight Data Hold Automatic Power Off and full overload protection Additionally it provides temperature measurement 4 20mA loop data store and recall functions z TENMA Model 72 7730A 72 7732A OPERATING MANUAL Inspection Open the package case and take out the Meter Check the items shown on Table 1 1 carefully to see if any items are missing or damaged Table 1 1 Unpacking Inspection Item Description Qty 1 English Operating Manual 1 piece 2 Test Lead 1 pair 3 K Type nickel chromium nickel silicon Point Contact Temperature Probe It is 1 piece only suitable for measuring temperature under 230 C 4 Alligator Clip 1 piece 5 Test Clip 1 pair 6 USB interface cable 1 piece 7 CD ROM Installation Guid
40. too large for the selected range 23 Analogue Bar Graph Provides an analog indication of the present input quick response TENMA Model 72 7730A 72 7732A OPERATING MANUAL Analog Bar Graph The bar graph provides an analog indication of the measured input For most measurement functions the bar graph updates 10 times per second Using MAX MIN The MAX MIN mode stores minimum MIN and maximum MAX input values When the input goes below the stored minimum value or above the stored maximum value the Meter beeps and stores the new value Press MAX MIN to enter MAX MIN mode The sampling time is every 2 seconds The maximum reading and MAX are shown on the left secondary display The minimum reading and MIN are shown on the right secondary display The primary display shows the current measurement reading Press MAX MIN the second time the current measurement reading is shown on the left secondary display The minimum reading and MIN are shown on the right secondary display The primary display shows the maximum value Press MAX MIN the third time the current measurement reading is shown on the left secondary display The maximum reading and MAX are shown on the right secondary display The primary display shows the minimum value Each subsequent press of MAX MIN steps through the above three modes To exit MAX MIN mode press EXIT Press HOLD to stop the Meter updating reading MAX MIN mode can only be
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