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ATD Tools ATD-5540 Instructions Manual

Automotive multimeter
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ATD-5540
AUTOMOTIVE MULTIMETER
INSTRUCTIONS
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INSTRUCTION
Contents
Voltage(V) .........................................................
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Electrical Speci cations
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Questions and answers

Dan Michaelson
March 27, 2025

I need to replace the battery in my ATD-5540 and the manual says to remove the 3 screws in the back there are no screws or holes in the back of the tester.

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1 comments:
Mr. Anderson
March 27, 2025

To replace the battery in the ATD Tools ATD-5540:

1. Loosen the three screws in the case back.
2. Remove the case by lifting up and forward.
3. Replace the battery with a 9-volt alkaline battery.

If screws are not visible, they may be covered or recessed. Inspect the back closely for hidden screw covers and remove them to access the screws.

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Summary of Contents for ATD Tools ATD-5540

  • Page 1: Table Of Contents

    INSTRUCTION MANUAL Contents Safety Meter Basics Meter Functions Voltage(V) ………………………………………………… ATD-5540 Resistance( AUTOMOTIVE MULTIMETER Diode Check( Audible Continuity( ) INSTRUCTIONS DC Current(A) RPM( Frequency(Freq) Dwell( ) Duty Cycle(%) Maintenance Fuse and Battery Replacement Trouble Shooting General Speci cations Electrical Speci cations...

  • Page 2: Safety

    Safety Safety Cont ’d … DANGER Danger Engines produce carbon monoxide which is Avoid electrical shock: do not touch the test odorless, causes slower reaction time, and leads, tips or the circuit being tested. can lead to serious injury. When the engine is operating, keep service...

  • Page 3: Meter Basics

    Safety Cont’d … Meter Basics IMPORTANT To maintain accuracy of the meter, replace the discharged battery immediately when the battery symbol appears on 1. Display: the meter display. Large 3 1/2 digit (1999 counts) LCD display with low battery Avoid measuring error from outside interference: keep the meter indication.

  • Page 4: Meter Functions

    Meter Functions-Voltage (DCV) The meter will automatically select the best voltage (V) range. Insert: Black lead in COM terminal. Red lead in V- Ω -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...

  • Page 5: Resistance( )

    Meter Functions – Resistance ( Ω Meter Functions – Diode Check ( IMPORTANT: Turn the power OFF to IMPORTANT:If you are testing an the test circuit application that has capacitors Select the Diode Check ( setting with the rotary switch. in the circuit, be sure to turn the power OFF on the test circuit and Insert:...

  • Page 6: Audible Continuity( )

    Meter Functions – Audible Continuity ( Meter Functions DC Current (A) IMPORTANT : All current measured flows through the meter. IMPORTANT: Turn the power It is important that you do not: OFF on the test circuit Measure current greater than 600 Volts AC or DC, with respect to ground.

  • Page 7: Rpm

    Meter Functions-RPM/x10RPM Meter Functions-Frequency(Hz) Select the RPM range with the rotary switch. Select the Frequency(Freq) Select the x 10RPM range with the rotary switch (1,000 to 12,000 setting with the rotary switch. RPM). Multiply displayed reading times by ten to get actual Set the rotary switch to the RPM.

  • Page 8: Dwell( )

    Meter Functions-Dwell Select the proper Dwell Meter Functions-Duty Cycle (%) range with the rotary switch. Insert: Select the % Duty Cycle range with the rotary switch. ·Black lead in COM terminal. Insert: ·Red lead in V- ·Black lead in COM terminal. Ω...

  • Page 9: Maintenance

    Maintenance Trouble Shooting Fuse and Battery Replacement 1. Meter wilI not turn ON. Check the battery contacts for a tight fit. WARNING: Check for a minimum battery voltage of 8.0 volts. Avoid electrical shock: remove test leads before opening case. 2.

  • Page 10: Electrical Specifications

    at<70% R.H. %DUTY CYCLE Ranges:1.0%-90.0% Storage Environment : -20℃to 60℃ (-4 F to140 Resolution:0.1% at<80%R.H Pulse width:>100us,<100ms accuracy ) / ℃ Temperature Coefficient : 0.2×(specified ( < 18 ℃ or > 28℃ ). Accuracy:±(2.0%rdg+5dgts) Overload protection: 500VDC or RMS AC Power : Single standard 9 Volt battery (NEDA 1604 or lEC6F22).

  • Page 11: Warranty Information

    Input protection:10A/250V fast acting ceramic fuse on 10A input AUDIBLE CONTINUITY Audible threshold : Less than 50 Ω Resolution:100m Ω RESISTANCE Ranges : 200 Ω , 2K Ω , 20K Ω , 2M Ω , 20M Ω Overload protection:250VDC or RMS AC Resolution : 100m Accuracy :±(0.8%rdg+3dgts) on 200 Ω...

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