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1. NOTE The polarity of red lead is positive 2 Set the range switch at desired position 10 3 Connect test leads across the resistor being measured and read the measurement from the LCD display 4 If the resistor being measured is connected to a circuit turn off the power and discharge all capacitors before attaching test leads Diode Test 1 Set the function switch to Q position NOTE The polarity of red lead is positive 2 Set the range switch to Pt oosition 3 Connect the red test lead to the anode of the diode and the black lead to the cathode 4 The approx forward voltage drop of the diode will be displayed in mV If the connection is reversed 1 will appear indicating overload Audible Continuity Test 1 2 3 11 Set the function switch to Q position Set the range at a position Connect test leads to two points of the circuit to be tested If the resistance is less than 500 the Meter will buzz Specifications General Specification Maximum Voltage Fuse Protection Power Supply Display Measuring Method Over Range Indication Polarity Indication Operating Temperature Storage Temperature Low Battery Indication Size Weight 12 CAT II 600V F 250 mA 250V 12V battery GP 23AX1 LCD with 1999 counts Updates 2 3times sec Dual slope integration A D converter 1 on the display Displayed for negative polarity 0 C to 40 C 3
2. free from defects in workmanship and material for three years from the date of original purchase This warranty does not cover defects resulting from damage caused by the user such as drops neglect misuse unauthorized alteration usage outside of specified conditions contamination or improper repair maintenance To receive service on the instrument if it becomes necessary during the warranty period contact your nearest Dawson authorized service center at 800 898 6991 or visit www DawsonTools com to obtain a return authorization within the US only A return authorization is necessary before returning any instrument to Dawson no service will be provided without a return authorization The user is responsible for properly packing the unit and charges such as shipping freight and insurance charges The extent of Dawson s liability is limited solely to the repair replacement of the instrument The above warranty in its entirety is inclusive and no other warranties written or oral are expressed or implied Out of the Box Check the Meter and accessories thoroughly before using the Meter Contact your local distributor if the Meter or any components are damaged or malfunction 3 Accessories Battery 12V GP 23A 1pc Soft Case 1pc User Manual 1pc Safety Information Z WARNING TO REDUCE THE RISK OF FIRE ELECTRICAL SHOCK PRODUCT DAMAGE OR PERSONAL INJURY PLEASE FOLLOW THE SAFETY INSTRUCTIONS DESCRIBED IN THE USER MANU
3. 2 F to 104 F 10 C to 50 C 10 F to 122 oR 120x70x18mm Approx 110g Technical Specification DC VOLTAGE Range Resolution Accuracy 2V 1mV 0 5 of reading 1digit 20V 10mV 0 8 of reading 1digit 200mV 100mV 0 8 of reading 1digit 500V 1V 0 8 of reading 1digit Overload protection SOOVDC or RMSAC for all ranges AC VOLTAGE Range Resolution Accuracy 200V 100mV 1 2 of reading 10digits 500V 1V 1 2 of reading 10digits Overload protection SOOVDC or RMSAC for all ranges Frequency range 45Hz to 450Hz Measurement algorithm Average responds DC CURRENT Range Resolution Accuracy 200mA 0 1mA 2 0 of reading 2digits Overload protection 250 mA 250V 13 RESISTANCE Range Resolution Accuracy 2kQ 10 1 0 of reading 2digits 20kQ 100 1 0 of reading 2digits 200kQ 100Q 1 0 of reading 2digits 2000kQ 1kQ 1 0 of reading 2digits Maximum open circuit voltage 0 65V Overload protection 250V RMS AC for all ranges DIODE TEST Range description gt t Show the approx forward voltage drop of the diode ot Built in buzzer sounds when resistance is less than 500 Overload protection 250V RMS AC 14 Maintenance and Repair Repair Please follow these steps closely if the Meter is not functioning properly 15 Check batteries replace with new batteries if lo
4. AL READ THE USER MANUALS BEFORE USING THE METER A WARNING DO NOT PLACE THE METER IN ANY ENVIRONMENT OF HIGH PRESSURE HIGH TEMPERATURE DUST EXPLOSIVE GAS OR VAPOR TO ENSURE SAFE OPERATION AND LIFE OF THE METER FOLLOW THESE INSTRUCTIONS Avoid shaking dropping or any kind of impacts when using or transporting the Meter To avoid electric shock or personal injury repairs or servicing not covered in this manual should be performed only by qualified personnel Avoid direct exposure to sunlight to ensure extended life of the Meter Do not place Meter in a strong magnetic field this may cause false readings Use only the batteries indicated in the Technical Spec Avoid exposing batteries to humidity Replace batteries as soon as the low battery indicator appears Temperature and humidity sensitivity of the Meter will be lower over time Please calibrate the Meter periodically for best performance Please keep the original packing for future shipping purposes ex Calibration After opening the box check for any damage during delivery The Meter should be used in the range of specified ambient temperature and humidity SAFETY SYMBOLS A Important safety information please refers to the user manual l Earth ground Indicates compliance with requirements for double insulation El A Fuse must be replaced with ratings specified in the manual A Important Safety Information Never
5. Dawson DDM180 Pocket Size Digital Multimeter User s Manual DDM180 HIGH SAFETY DMM 2000kQ OFF CATI fas Table of Cont LIMITED WARRANTY AND LI ents MITATION OF LIABILITY ccccccsssecccesseeccssseeccesssecceeseeees 3 Out Of th BOX i ccecccecccsecssccececessssssseeeeeeeeees 3 ACCOSSOPMES 355 scssntcascassodanSrctaasonceraqesbctet ihcadts 4 A Important Safety Information 6 COPIPICATION n at arera aiaei 7 INTRODUCTION ssssssessssessssesosssssssseesssessesse 7 OAV EA N AE EE AE AEE AE SEEE 7 Figures and Components sss0cccceceeeeees 8 Buttons and Componentts sscscc000 8 USING THE METER csseccccccsssssseeeeeeeeees 9 DC Voltage Measurement ccccccceeeeseees 9 AC Voltage MeasureMent cccceceeeseeeeees 9 DC Current Measurement 10 Resistance Measurement n os 10 Diod Testisi iaae 11 Audible Continuity TeSt ccccccccccccccseseees 11 SPECIFICATIONS cccccccesssssseeeeeeeeeeeeeees 12 General Specification ccccccccesessecececeeees 12 Technical Specification cccccccccccecseseees 13 MAINTENANCE AND REPAIR sseeeeeeees 15 REDIF PEET E E 15 Replacing Batteries ccccccccccsssssccceceeees 16 CONTACT DAWSON ssssssssssessssessssseessssssesse 16 FEATURES 82 ooioiiesoseecteessseicresesessesss Back Page LIMITED WARRANTY AND LIMITATION OF LIABILITY This instrument from Dawson Tools Inc will be
6. d position If the magnitude of voltage to be measured is unknown set the range switch at the highest range and then reduce the range until satisfactory reading is obtained 3 Connect test leads across the source or load being measured The polarity of red lead connection will be indicated at the same time as the voltage value 4 When the range switch is set at 500V position HV sign will appear on the display to remind user of high voltage measurement Special attention should be paid AC Voltage Measurement 1 Set the function switch to V position 2 Set the range switch to desired position Measurement can be obtained at 2V and 20V positions but the accuracy is not guaranteed 3 Connect test leads across the source or load being measured and read the voltage value on the LCD display 4 When the range switch is set at 500V position HV sign will appear to remind user of high voltage measurement DC Current Measurement 1 Set the function switch to A position 2 Set the range switch at 200mA position NOTE Measurement reading can be obtained at other positions but the decimal point will be in the incorrect place 3 Open the circuit in which the current is to be measured and connect test leads in series with the circuit 4 Read current value on the LCD display along with the polarity of red lead connection Resistance Measurement 1 Set the function switch to Q position
7. use the meter to measure voltages that might exceed 500V DC AC above earth ground in category II installations Always be careful when working with voltage above 60V DC or 30VAC RMS Keep fingers behind the probe barriers while measuring Do not perform resistance measurements on powered circuits Inspect test leads and probes for cracks breaks or crazes on insulation before using the meter Repair or maintenance should be implemented by trained personnel Certification This meter has met IEC 1010 standards with an overvoltage category CAT II and pollution 2 Introduction Overview This Dawson DDM180 compact digital multimeter is designed to measure AC and DC voltages DC current Resistance Diode and Audible Continuity checks It is low profile and lightweight with test leads wound on its body making it easy to carry It is ideal for electronic and appliance repair home or commercial use This instrument will provide years of satisfactory service Figures and Components Buttons and Components 1 Range Switch Select desired ranges or turn on off the meter Function Switch Switch between functions 3 LCD Display 3 1 2digit 7segments Maximum 1999 counts 4 Test Leads Red positive test lead and black negative test lead Front Panel 2000kQ OFF A cam Poe Using the Meter DC Voltage Measurement 1 Set the function switch to V position 2 Set the range switch at desire
8. w battery indicator Es appears Follow User s Manual to confirm all procedures Before sending Meter back for repair include a description of the problems encountered Remove batteries and pack Meter well to avoid damage in delivery Dawson does not cover damage due to delivery Repair or service not covered in this manual should be performed only by the authorized service center or qualified personnel Replacing Batteries Follow these steps to replace batteries Turn off the Meter Loosen the battery compartment door and remove the door from the case bottom Remove batteries and replace with new batteries Re attach the battery compartment door to the case bottom and tighten screw Contact Dawson Dawson Tools Inc 1142 S Diamond Bar Blvd 858 Diamond Bar CA 91765 Phone 310 728 6220 www DawsonTools com g Do not recycle 16 Back Page Features LCD Display Diode Test Audible Continuity Low Battery Indicator 17

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