ATD-5540 AUTOMOTIVE MULTIMETER
Contents
1. 600V AC Use caution when measuring voltage above 25V DC or 25V AC Circuit tested must be protected by a 10A fuse or circuit breaker Do not use the meter if it has been damaged Do not use the test leads if the insulation is damaged or if metal is exposed Safety Cont d A Danger Avoid electrical shock do not touch the test Se leads tips or the circuit being tested Do not try a voltage measurement with the test leads in the 10A or the mA terminal When testing for the presence of voltage or current make sure the meter is functioning correctly Take a reading of a known voltage or current before accepting a zero reading Choose the proper range and function for the measurement Do not try voltage or current measurements that may exceed the ratings marked on the Function Range switch or terminal When measuring current connect the meter in series with the load Never connect more than one set of test leads to the meter Disconnect the live test lead before disconnecting the common test lead The mA and the 10A terminals are protected by fuses To avoid possible injury or damage use only in circuits limited to DC 10A for 60 seconds See also Fuse Replacement Safety Cont d IMPORTANT To maintain accuracy of the meter replace the discharged battery immediately when the battery symbol appears on the meter display Avoid measuring error from outside interference keep th2. 39mm D e Weight Approx 222g Meter Only 355g With Holster Electrical Specifications ELECTRICAL SPECIFICATIONS Accuracy is given as of reading number of least significant digits at 18 C to 28 C 65 F to 83 F with relative humidity up to 70 RPM Tach Ranges 600 2000 6000 12000 x10RPM Resolution 1 RPM Effect Reading gt 600RPM Accuracy 2 rdg 4 dgts Overload protection 500VDC or RMS AC 17 DUTY CYCLE Ranges 1 0 90 0 Resolution 0 1 Pulse width gt 100us lt 100ms Accuracy 2 0 rdg 5dgts Overload protection 500VDC or RMS AC DWELL ANGLE No of cylinders 3 4 5 6 8 Ranges 0 120 0 3CYL 0 90 0 4CYL 0 72 0 5CYL 0 60 0 6CYL 0 45 0 8CYL Resolution 0 1 Accuracy 2 0 rdg 5dgts Overload protection 50 0VDC or RMS AC DC VOLTAGE Ranges 200mV 2V 20V 200V 600V Resolution 100 u V Accuracy 0 5 rdg 1dgt on 200mV 0 8 rdg 1dgt 2V to 600V ranges Input impedence 10M Q Overload protection 600VDC or AC rms DC CURRENT Ranges 10A Resolution 10mA Accuracy 3 0 rdg 3dgts 18 Input protection 10A 250V fast acting ceramic fuse on 10A input RESISTANCE Ranges 200 2 2K2 20KQ 2MQ 20M Q Resolution 100m Accuracy 0 8 rdg 3dgts on 200 Q 0 8 rdgt 2dgts on 2KQ to 2MQ ranges 1 5 rdgt 5dgts on 20M Q ranges Overload protection 250VDC or RMS AC FREQUENCY Ranges 200Hz 2000Hz 20KHz Resolution 0 1Hz Accuracy 1 0 rdg 4dgts on all ran
3. INSTRUCTION MANUAL Contents SCH EE 1 M ter Basics eege 4 Meter FUMCHONS eeneg 4 SEE WV E 6 ATD 5540 FSSC E O E cues cene rete aauatrecenvrcesyaeret ea sicom 7 AUTOMOTIVE MULTIMETER Bee E E 8 Audible COntinuity ed cccccecceeceeceeccecceccnsceeseesceeeeeseneeees 9 INSTRUCTIONS DC Current A EE 10 RER A eet 11 FreQUeNCY FL G ceccscesccssccnensecesscescocsseccensscarepsnsessesesense 12 DWED 13 Daty Cycle EE 14 MANTENA na EE S 15 Fuse and Battery Replacement 15 Trouble Shooting ee 16 General Spechhcattopns 16 Electrical Specifications aa aieicecssseeeeseneeeeeseeeeess 17 Warranty Information a ccceceassseesseee 20 Safety AX DANGER Exceeding the limits of this meter is dangerous It will expose you to serious or possibly fatal Engines produce carbon monoxide which is odorless causes slower reaction time and can lead to serious injury When the engine is operating keep service areas WELL VENTILATED or attach the vehicle exhaust system to the shop exhaust removal system Set the parking brake and block the wheels before testing or repairing the vehicle It is especially important to block the wheels on front wheel drive vehicles the parking brake does not hold the drive wheels Wear an eye shield when testing or repair ing vehicles injury Carefully read and understand the cautions and the specification limits of this meter Voltage between any terminal and ground must not exceed 600V DC or
4. cimal point one place and increase the accuracy An I display means the range is too low select the next higher range OK WARNING When measuring voltage be sure the Red test lead is in the terminal marked VI the test lead is in an Amp A or Milliampere mA terminal you may be injured or the meter damaged 3 Black 3 Red Meter Functions Resistance Q Meter Functions Diode Check mj IMPORTANT Turn the power OFF to the test circuit gt Select the Diode Check gt setting with the rotary switch IMPORTANT If you are testing an application that has capacitors in the circuit be sure to turn the power OFF on the test circuit and discharge all capacitors Accurate measurement is not possible if external or residual voltage is present Insert e Black lead in COM terminal e Red lead in V Q RPM terminal Touch the Black test probe to the negative side of the diode Touch the Red test probe to the gt Select the resistance Q positive side of the diode Reverse the probes Black to the positive side and Red to the negative side Note A good diode will read low in one direction and high in the other direction when the probes are reversed or vice versa A defective diode will have the same reading in both directions or read between 1 0 to 3 0V in both directions Reverse Diode tO Probes to 4 to 9V Good 4 to 9V L O L rang
5. connected in series as described Circuit open no beep Circuit complete beep sounds Meter Functions RPM x10RPM gt Select the RPM range with the rotary switch or gt Select the x 10RPM range with the rotary switch 1 000 to 12 000 RPM Multiply the displayed reading times by ten to get actual RPM Insert the inductive pickup connecting terminal into the meter e Ground lead in COM terminal e Output lead in V Q RPM terminal Connect the inductive pickup to a spark plug wire If no reading is received unhook the clamp turn it over and connect again Note Position the inductive pick up as far away from the distributor and 2a aa the exhaust manifold as possible i EE Position the inductive pick up to a 3 K E within six inches of the spark plug pa al or move it to another plug wire if Zu no reading or an erratic reading is UU received T 2 11 Meter Functions Frequency Hz gt Select the Frequency Freq setting with the rotary switch Gei the rotary switch to the Frequency range that gives the most accurate measurement reading Insert e Black lead in COM terminal e Red lead in V Q RPM terminal Connect the Black test probe to ground Connect the Red test probe to the signal out wire of the Black sensor to be tested Ground Side Signal Out Side Voltage In Side 12 Meter Functions Dwell gt Select the proper Dwell range with the rotary swi
6. e meter away from spark plug or coil wires Avoid damaging the meter when testing voltage disconnect the test leads from the test points before changing functions Do not exceed the limits shown in the table below FUNCTION Input limit DC Volts 2eVHz OC 600 Volts DC 500 Volts AC DC Ohm resistance Ohm resistance lt f VHZ oC 250 Volts AC DC Diode DC 10A in 10A AC DC Duty Cycle 2eVHz OC 500 Volts AC DC Dwell angle 10 Amp measurement for 60 seconds maximum Ohms can not be measured if voltage is present ohms can be measured only in a non powered circuit However the meter is protected to 250 volts Meter Basics 1 Display Large 3 1 2 digit 1999 counts LCD display with low battery indication 2 Rotary Selector Switch Turn this switch to Select a function or turn the meter OFF 3 Test Lead Terminals The Black test is used in the common COM terminal for all rests The Red test Lead is used to measure Amp or Volts Meter Functions Voltage DCV gt The meter will automatically select the best voltage V range Insert e Black lead in COM terminal e Red lead in V Q RPM terminal Touch the Black probe to ground or to the negative circuit Touch the Red probe to the circuit coming from the power source IMPORTANT voltage must be measured in parallel Red probe measuring circuit from power source gt Accuracy Selection of a lower range will move the de
7. e with the rotary switch Insert e Black lead in COM terminal e Red lead in V Q9 RPM terminal Touch the test lead probes across the resistor to be tested L ne O O OOOV OOOV Meter Functions Audible Continuity Meter Functions DC Current A IMPORTANT All current measured flows through the meter It is important that you do not e Measure current greater than 600 Volts AC or DC with respect to ground e Exceed 60 seconds when measuring continuous current between 1A 10A Allow five minutes for cool down before continuing IMPORTANT Turn the power OFF on the test circuit gt Select the Audible Continuity eil range with the rotary switch Insert e Black lead in COM terminal e Red lead in V Q RPM terminal Connect one test probe to each end of the circuit to be tested e Circuit complete the meter will beep continuously e Circuit open there is no beep and the display shows to 1 over limit gt Select the 10A range with the rotary switch Insert e Black lead in COM terminal es Red lead in the 10A terminal IMPORTANT Turn OFF all power to the circuit or disconnect the circuit from the power source Connect e The Red probe to the side of the circuit closest to the power source e The Black probe to the side of the ae circuit to ground e Turn the power ON and test Note Current must always be measured with the meter test probes
8. ges Sensitivity 3 5V RMS min at gt 20 and lt 80 duty cycle Effect Reading More than 100 digits at pulse width gt 2u Sec Overload protection 500 VDC or RMS AC DIODE TEST Test current 0 6mA typical Vf 0 6V Resolution 1mV Accuracy 10 rdg 3dgts Open circuit voltage 3 0Vdc typical Overload protection 250VDC or RMS AC 19 AUDIBLE CONTINUITY Audible threshold Less than 50 Q Resolution 100m Q Overload protection 250VDC or RMS AC Warranty Information This product is warranted to be free from defects for one year If this product fails during the first 12 months due to faulty materials or workmanship it will be replaced free of charge at the discretion of the manufacturer NOTE This one year warranty does not cover dead batteries and blown fuses For warranty and service coverage please return this product to your dealer for processing and evaluation OR return it directly to Electronic Specialties Inc 139 Elizabeth Ln Genoa City WI 53128 262 279 1400 WWW ESITEST COM Defective units being returned to your dealer or to the factory should include proof of purchase date Any testers that do not function due to misuse or abuse will be subject to out of warranty service charges 20
9. ng fuse Make sure the replacement fuse is centered in the fuse holder 3 Re assemble the case Fasten the three screws Screws Shown Loosened F10A 250V 15 Trouble Shooting Meter will not turn ON Check the battery contacts for a tight fit Check for a minimum battery voltage of 8 0 volts Ampere reading is erratic or there is no reading at all Disassemble the meter back cover and test the fuses for continuity Meter reading is erratic Printed circuit board contaminated from handling with hands Low battery Open circuit in a test lead frayed or broken wire Wrong range selected Blown fuse General Specifications GENERAL SPECIFICATIONS Display 3 1 2digit 1999 counts liquid crystal display LCD Polarity Automatic negative polarity indication Overrange Indication 1 mark indication Low Battery Indication The is displayed when the battery voltage drops below the operating level Measurement Rate 2 times per second nominal Operating Environment 0 Cto 50 C 320 F to 122 F 16 at lt 70 R H e Storage Environment 20 Cto 60 C 4 F to140 F at lt 80 R H e Temperature Coefficient 0 2x specified accuracy C lt 18 C or gt 28 C e Power Single standard 9 Volt battery NEDA 1604 or IEC6F 22 Battery Life 200 hours typical with alkaline battery Fuse 10A 600V 6 3x25mm fast acting ceramic type e Dimensions 147mm H x70mm W x
10. tch Insert Black lead in COM terminal Red lead in V Q RPM terminal Connect the Black test probe to ground Connect the Red test probe to the wire that connects to the breaker points see illustration Black To breaker points 13 Meter Functions Duty Cycle gt Select the Duty Cycle range with the rotary switch Insert Black lead in COM terminal Red lead in V Q RPM terminal Connect the Black test probe to ground Connect the Red test probe to the signal wire circuit The illustration for a mixture control solenoid is shown with the metering rod in the closed position The meter will display the percentage of time the plunger is in the closed position low duty cycle during one duty cycle E Black 14 Red Bi Mixture l Control Shown t To ECM Maintenance Fuse and Battery Replacement A WARNING l 2 Avoid electrical shock remove test leads before opening case Do not operate the meter or rotate the meter switch when the case is open To replace a battery or fuse loosen the three screws in the case back and remove the case by lifting up and forward Replace the battery with an 9 Volt alkaline battery Important To prevent contamination of the circuits your hands must be clean and the printed circuit board must be held by the edges Replace the fuses with the same type of fuse 10 A is a F 10 A 250V high energy fast acti
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