Owner`s Manual
Contents
1. CAPACITANCE MEASUREMENTS WARNING To avoid electric shock disconnect power to the unit under test and discharge all capacitors before taking any capacitance measurements Remove the batteries and unplug the line cords 1 Set the rotary function switch to the CAP position 2 Insert the black test lead banana plug into the negative COM jack Insert the red test lead banana plug into the positive CAP jack 3 Touch the test leads to the capacitor to be tested 4 Read the capacitance value in the display FREQUENCY MEASUREMENTS 1 Set the rotary function switch to the FREQ position 2 Insert the black lead banana plug into the negative COM jack and the red test lead banana plug into the positive Hz jack 3 Touch the test probe tips to the circuit under test 4 Read the frequency on the display DUTY CYCLE 1 Set the rotary function switch to the FREQ position 2 Insert the black lead banana plug into the negative COM jack and the red test lead banana plug into the positive Hz jack Press the SELECT key momentarily to select in the display Touch the test probe tips to the circuit under test Read the duty cycle on the display 17 aro TEMPERATURE MEASUREMENTS 1 Set the function switch to the Type K F or C position 2 Insert the Temperature Probe into the input jacks making sure to observe the correct polarity 3 Touch the Temperature Probe head to the part whose temperat2. 8 digits 7 digits 400mA_ 0 1mA 4A 0 001A 3 0 reading 3 5 reading 20A 0 01A 8 digits 10 digits NOTE Accuracy is stated at 65 F to 83 F 18 C to 28 C and less than 75 RH Function Range Resolution Accuracy Resistance 4002 0 12 0 8 reading 4 digits 4kQ 0 001k2 0 8 reading 2 digits 40kQ 0 01k 400kQ 0 1kQ 1 0 reading 2 digits 4MQ 0 001MQ 40MQ 0 01MQ 3 0 reading 5 digits Capacitance 40nF 0 01nF 5 0 reading 7 digits 400nF 0 1nF 3 0 reading 5 digits 4uF COME 3 5 reading 5 digits 40uF 0 01 uF 100uF 0 1 uF 5 0 reading 7 digits Frequency 5 000Hz__ 0 001H2__ 14 5 reading 5 digits 50 00Hz 0 01Hz 500 0Hz 0 1Hz 5 000kHz 0 001kHz 50 00kHz 0 01kHz 500 0kHz 0 1kHz 1 2 reading 2 digits 5 000MHz 0 001MHz 10 00MHz 0 01MHz 1 5 reading 4 digits Sensitivity 0 8V rms min 20 to 80 duty cycle and lt 100kHz 5Vrms min 20 to 80 duty cycle and gt 100kHz Duty Cycle 0 1 to 0 1 1 2 reading 2 digits 99 9 Pulse width 100us 100ms Frequency 5Hz to 150kHz ne 1385F 3 0 reading 3 digits ype 20 to 7 750 C probe accuracy not included NOTE Accuracy specifications consist of two elements e reading This is the accuracy of the measurement circuit e digits This is the acc
3. BATTERY INSTALLATION WARNING To avoid electric shock disconnect the test leads from any source of voltage before removing the battery cover 1 Disconnect the test leads from the meter Remove the rear battery cover by removing the two screws using a Phillips head screwdriver 3 Insert the battery into battery clips observing the correct polarity 4 Put the battery cover back in place and secure with the two screws WARNING To avoid electric shock do not operate the meter until the battery cover is in place and fastened securely NOTE 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 10 OPERATING INSTRUCTIONS WARNING Risk of electrocution High voltage circuits both AC and DC are very dangerous and should be measured with great care 1 ALWAYS turn the function switch to the OFF position when the meter is not in use 2 If OL appears in the display during a measurement the value exceeds the range you have selected Change to a higher range NOTE On some low AC and DC voltage ranges with the test leads not connected to a device the display may show a random changing reading This is normal and is caused by the high input sensitivity The reading will stabilize and give a proper measurement when connected to a circuit DC VOLTAGE MEASUREMENTS CAUTION Do not measure DC voltages if a motor on the circuit
4. Protective holster SBNOAPoON NOTE Tilt stand and battery compartment are on rear of unit SYMBOLS AND ANNUNCIATORS Continuity Diode test Battery status Test lead connection error nano 10 capacitance micro 10 amps cap milli 10 volts amps kilo 10 ohms mega 10 ohms Hertz frequency Percent duty ratio Alternating current Direct current Degrees Fahrenheit C F AUTO IRTEMP HOLDREL gt MkQ Hz A T 0 0 o DC AC myn a D D Se vl 4 B J ae a a a A Amps F Farads capacitance Q Ohms V Volts REL Relative AUTO Autoranging HOLD Display hold C Degrees Centigrade SPECIFICATIONS Function Range _ Resolution Accuracy DC 400mV_ 0 1mV 0 3 reading 2 digits Voltage 4y 0 001V 40V 0 01V 0 5 reading 2 digits 400V 0 1V 600V 1V 0 8 reading 3 digits AC 50 to 400Hz 400Hz to 1kHz Voltage 4oomv Jo imV 1 5 reading 2 5 reading 15 digits 15digits ay aks 1 5 reading 2 5 reading 40V 0 01 6 digits 8 digits 400V 0 1V 600V 1V 1 8 reading 3 reading 6 digits 8 digits DC 200uA O 1uA RI OOO UA ANA 1 5 reading 3 digits 20mA 0 01mA 200mA_ 0 1mA 2A POON 2 5 reading 5 digits 20A 0 01A AC 50 to 400Hz 400Hz to 1KHz Current 400uA 0 1uA 4000uA 1pA 1 8 reading 3 0 reading 40mA 0 01mA
5. is being switched ON or OFF Large voltage surges may occur that can damage the meter 1 Set the function switch to the V position 2 Press the SELECT button to indicate DC on the display 3 Insert the black test lead banana plug into the negative COM jack Insert the red test lead banana plug into the positive V jack 4 Touch the black test probe tip to the negative side of the circuit Touch the red test probe tip to the positive side of the circuit 5 Read the voltage in the display AC VOLTAGE MEASUREMENTS AC VOLTAGE The probe tips may not be long enough to contact the live parts inside some 240V outlets for appliances 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 WARNING To avoid electric shock make sure the probe tips are touching the metal contacts inside the outlet before assuming no voltage is present CAUTION 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 1 Set the function switch to the V position 2 Press the SELECT button to indicate AC on the display 3 Insert the black test lead banana plug into the negative COM jack Insert red test lead banana plug into the positive V jack 4 Touch the black test probe tip to the negative side of the circuit Touch the red test p
6. manual before use 2 Check to be sure the battery is properly installed 3 Check to be sure the battery is good 4 If the battery is good and the meter still doesn t operate check to be sure that both ends of the fuse are properly installed If You Do Not Understand How the Meter Works 1 Purchase Multitesters and Their Use for Electrical Testing Item No 82303 2 Call our Customer Service Line 1 888 326 1006 SERVICE AND PARTS Item Number Description 82376 Fuse kit 93894 9V battery 82398 Set of black and red Test Leads 73754 D Replacement battery cover 73754 C Front Cover 73754 CS Rear cover screws 82377 Thermocouple probe For replacement parts shipped directly to your home Call 9 am 5 pm Eastern Time M F 1 888 326 1006 24
7. Owner s Manual PROFESSIONAL True RMS Autoranging Multimeter EOI to E 1 1 l Model No 73754 AUTORANGING MULTIMETER CAUTION Read understand and e Safety follow Safety Rules and Operating Operation Instructions in this manual before e Maintenance using this product e Espa ol Sears Roebuck and Co Hoffman Estates IL 60179 U S A www craftsman com 062606 TABLE OF CONTENTS Warranty Safety Instructions Safety Symbols Control and Jacks Symbols and Annunciators Specifications Battery Installation Operating Instructions DC Voltage Measurements AC Voltage Measurements DC Current Measurements AC Current Measurements Resistance Measurements Continuity Check Diode Test Capacitance Measurements Frequency Measurements Duty Cycle Measurements Temperature Measurements Autoranging Manual range selection Relative Mode Display Backlight MAX Hold Auto Power Off Low Battery Indication Wrong Connection Indication Maintenance Battery Replacement Fuse Replacement Troubleshooting Service and Parts ONE YEAR FULL WARRANTY ONE YEAR FULL WARRANTY ON CRAFTSMAN PROFESSIONAL MULTIMETER If this CRAFTSMAN Professional Multimeter fails to give complete satisfaction within one year from the date of purchase RETURN IT TO THE NEAREST SEARS STORE OR OTHER CRAFTSMAN OUTLET IN THE UNITED STATES and Sears will replace it free of charge This warranty gives you specific legal rights and you may al
8. S turn off the power and disconnect the test leads before opening the cover to replace the fuse or battery 7 NEVER operate the meter unless the back cover is in place and fastened securely SAFETY SYMBOLS This symbol adjacent to another symbol terminal or operating device indicates that the operator must refer to an explanation in the Operating Instructions to avoid personal injury or damage to the meter This WARNING symbol indicates a potentially hazardous situation which if not avoided could result in death or serious injury This CAUTION symbol indicates a potentially hazardous situation which if not avoided may result damage to the product This symbol advises the user that the terminal s so marked must not be connected to a circuit point at which the voltage with respect to earth ground exceeds in this case 600 VAC or VDC This symbol adjacent to one or more terminals identifies them as being associated with ranges that may in normal use be subjected to particularly hazardous voltages For maximum safety the meter and its test leads should not be handled when these terminals are energized This symbol indicates that a device is protected throughout by double insulation or reinforced insulation CONTROLS AND JACKS 4000 count LCD display HOLD SELECT button Function switch mA uA and A input jacks COM input jack Positive input jack RANGE hold button 9 RELATIVE button 10 Backlight button 11
9. banana plug into the positive Q jack 3 Touch the test probe tips across the circuit or part under test It is best to disconnect one side of the part under test so the rest of the circuit will not interfere with the resistance reading 4 Read the resistance in the display Resistance CONTINUITY CHECK WARNING To avoid electric shock never measure continuity Set the function switch to the Q position 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 SELECT button to indicate y on the display Touch the test probe tips to the circuit or wire you wish to check 5 Ifthe resistance is less than approximately 150 the audible signal will sound If the circuit is open the display will indicate OL DIODE TEST 1 4 Set the function switch to the Q position Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the positive diode jack Press the SELECT button to indicate on the display Touch the test probes to the diode under test Forward voltage will typically indicate 0 400 to 0 700mV Reverse voltage will indicate OL Shorted devices will indicate near OmV Shorted devices will indicate near OmV and an open device will indicate OL in both polarities 16 aal PR a a te
10. measurements on the 20A scale for longer than 30 seconds Exceeding 30 seconds may cause damage to the meter and or the test leads 1 Insert the black test lead banana plug into the negative COM jack 2 For current measurements up to 4000HA AC set the function switch to the pA position and insert the red test lead banana plug into the HA mA jack 3 For current measurements up to 400mA AC set the function switch to the mA position and insert the red test lead banana plug into the pA mA jack 4 For current measurements up to 20A AC set the function switch to the A range and AC urco income insert the red test lead banana plug into the 20A jack 5 Press the SELECT button to indicate AC on the display 6 Remove power from the circuit under test then open up the circuit at the point where you wish to measure current 7 Touch the black test probe tip to the negative side of the circuit Touch the red test probe tip to the positive side of the circuit 8 Apply power to the circuit 9 Read the current in the display 14 RESISTANCE MEASUREMENTS WARNING To avoid electric shock disconnect power to the unit under test and discharge all capacitors before taking any resistance measurements Remove the batteries and unplug the line cords 1 Set the function switch to the Q position 2 Insert the black test lead banana plug into the negative COM jack Insert the red test lead
11. n place and fastened securely This multimeter is designed to provide years of dependable service if the following care instructions are performed 1 KEEP THE METER DRY If it gets wet wipe it off 2 USE AND STORE THE METER IN NORMAL TEMPERATURES Temperature extremes can shorten the life of the electronic parts and distort or melt plastic parts 3 HANDLE THE METER GENTLY AND CAREFULLY Dropping it can damage the electronic parts or the case 4 KEEP THE METER CLEAN Wipe the case occasionally with a damp cloth DO NOT use chemicals cleaning solvents or detergents 5 USE ONLY FRESH BATTERIES OF THE RECOMMENDED SIZE AND TYPE Remove old or weak batteries so they do not leak and damage the unit 6 IF THE METER IS TO BE STORED FOR A LONG PERIOD OF TIME the batteries should be removed to prevent damage to the unit UL LISTED The UL mark does not indicate that this product has been evaluated for the accuracy of its readings 21 BATTERY REPLACEMENT WARNING To avoid electric shock disconnect the test leads from any source of voltage before removing the battery cover 1 When the battery becomes exhausted or drops below the operating voltage A will appear in the left hand side of the LCD display The battery should be replaced 2 Follow instructions for installing batteries See the Battery Installation section of this manual 3 Dispose of the old batteries properly WARNING To avoid electric shock do n
12. ot operate your meter until the battery cover is in place and fastened securely NOTE 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 FUSE REPLACEMENT WARNING To avoid electric shock disconnect the test leads from any source of voltage before removing the battery cover A 1 Disconnect the test leads from the meter 2 Remove the protective rubber holster 3 Remove the battery cover two B screws 4 Disconnect and remove the battery 5 Remove the four A screws securing the rear cover 6 Remove the rear cover 7 Lift the center circuit board straight up from the connectors to gain access to the fuse holders 8 Gently remove the old fuse and install the new fuse into the holder 9 Always use a fuse of the proper size and value 0 2A 250V fast blow for the 200mA range 20A 250V fast blow for the 20A range 10 Align the center board with the connectors and gently press into place 11 Replace and secure the rear cover battery battery cover and screws WARNING To avoid electric shock do not operate your meter until the battery cover is in place and fastened securely 23 TROUBLESHOOTING There may be times when your meter does not operate properly Here are some common problems that you may have and some easy solutions to them Meter Does Not Operate 1 Always read all the instructions in this
13. re the reading in the display and the REL indicator will appear on the display The display will now indicate the difference between the stored value and the measured value Press the REL button to exit the relative mode Note The Relative function does not operate in the Frequency function DISPLAY BACKLIGHT Press and hold the 3 button for gt 1 second to turn on or off the display backlight function The backlight will automatically turn off after 30 seconds HOLD The hold function freezes the reading in the display Press the HOLD key momentarily to activate or to exit the hold function AUTO POWER OFF The auto off feature will turn the meter off after 15 minutes LOW BATTERY INDICATION The z icon will appear in the lower left corner of the display when the battery voltage becomes low Replace the battery when this appears WRONG CONNECTION INDICATION The xe icon will appear in the upper right corner of the display and the buzzer will sound whenever the positive test lead is inserted into the 20A or uA mA input jack and a non current function is selected If this occurs turn the meter off and reinsert the test lead into the proper input jack for the function selected 20 MAINTENANCE WARNING To avoid electric shock disconnect the test leads from any source of voltage before removing the back cover or the battery cover WARNING To avoid electric shock do not operate your meter until the battery cover is i
14. robe tip to the positive side of the circuit 5 Read the voltage in the display Voltage DC CURRENT MEASUREMENTS CAUTION Do not make current measurements on the 20A scale for longer than 30 seconds Exceeding 30 seconds may cause damage to the meter and or the test leads 1 Insert the black test lead banana plug into the negative COM jack 2 For current measurements up to 4000uA DC set the function switch to the pA position and insert the red test lead banana plug into the uA mA jack 3 For current measurements up to 400mA DC set the function switch to the mA position and insert the red test lead banana plug into the uA mA jack 4 For current measurements up to 20A DC set the function switch to the A range and insert the red test lead banana plug into the 20A jack 5 Press the SELECT button to indicate DC on the display 6 Remove power from the circuit under test then open up the circuit at the point where you wish to measure current 7 Touch the black test probe tip to the negative side of the circuit Touch the red test probe tip to the positive side of the circuit 8 Apply power to the circuit 9 Read the current in the display Current DC mA amp uA AC CURRENT MEASUREMENTS WARNING To avoid electric shock do not attempt to measure AC A in circuits that have voltages which exceed 250V AC CAUTION Do not make current
15. so have other rights which vary from state to state Sears Roebuck and Co Dept 817WA Hoffman Estates IL 60179 For Customer Assistance Call 9am 5pm ET Monday through Friday 1 888 326 1006 WARNING USE EXTREME CAUTION IN THE USE OF THIS DEVICE Improper use of this device can result in injury or death Follow all safeguards suggested in this manual in addition to the normal safety precautions used in working with electrical circuits DO NOT service this device if you are not qualified to do so SAFETY INSTRUCTIONS This meter has been designed for safe use but must be operated with caution The rules listed below must be carefully followed for safe operation 1 NEVER apply voltage or current to the meter that exceeds the specified maximum Input Limits Function Maximum Input VDC or VAC 600V DC 600V AC 200Vrms on 400mV range mA AC DC 500mA 250V fast acting fuse A AC DC 20A 250V fast acting fuse 30 seconds max every 15 minutes Resistance Diode Test 250Vrms for 15sec max Continuity 2 USE EXTREME CAUTION when working with high voltages 3 DO NOT measure voltage if the voltage on the COM input jack exceeds 600V above earth ground 4 DO NOT measure current of circuits whose voltage is greater than 600V above earth ground 5 NEVER connect the meter leads across a voltage source while the function switch is in the resistance or diode mode Doing so can damage the meter 6 ALWAY
16. uracy of the analog to digital converter 8 Diode Test Continuity Check Temperature Sensor Input Impedance AC Response ACV Bandwidth Display Overrange indication Auto Power Off Polarity Measurement Rate Low Battery Indication Battery Fuses Operating Temperature Storage Temperature Operating Humidity Storage Humidity Operating Altitude Weight Size Safety Test current of 0 3mA maximum open circuit voltage 1 5V DC typical Audible signal will sound if the resistance is less than 150Q approx test current lt 0 7mA Requires type K thermocouple gt 7 5MQ VDC amp VAC True rms 50Hz to 1kHz 4000 count backlit liquid crystal OL is displayed 15 minutes approximately Automatic no indication for positive Minus sign for negative 2 times per second nominal is displayed if battery voltage drops below operating voltage one 9 volt NEDA 1604 battery mA pA ranges 0 2A 250V fast blow A range 20A 250V ceramic fast blow 41 F to 104 F 5 C to 40 C 4 F to 140 F 20 C to 60 C Max 80 up to 87 F 31 C decreasing linearly to 50 at 104 F 40 C lt 80 7000ft 2000 meters maximum 0 753lb 342g includes holster 7 36 x 3 2 x 2 0 187 x 81 x 50mm includes holster For indoor use and in accordance with the requirements for double insulation to IEC1010 1 1995 EN61010 1 1995 Overvoltage Category III Pollution Degree 2 9
17. ure you wish to measure Keep the probe touching the part under test until the reading stabilizes about 30 seconds 4 Read the temperature in the display Note 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 AUTORANGING MANUAL RANGE SELECTION 2 3 When the meter is first turned on it automatically goes into AutoRanging This automatically selects the best range for the measurements being made and is generally the best mode for most measurements For measurement situations requiring that a range be manually selected perform the following Press the RANGE key The AUTO display indicator will turn off Press the RANGE key to step through the available ranges until you select the range you want To exit the Manual Ranging mode and return to AutoRanging press and hold the RANGE key for 2 seconds Note Manual ranging does not apply for the Capacitance Frequency and Temperature functions RELATIVE MODE 2 3 4 The relative measurement feature allows you to make measurements 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 reference value and the measured value Perform the measurement as described in the operating instructions Press the REL button to sto
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