ATD Tools ATD-5544 Instruction Manual
ATD Tools ATD-5544 is a versatile and reliable digital multimeter designed to measure AC/DC voltage, resistance, DC current, and perform diode and battery tests. Its compact size and lightweight design make it perfect for field and bench use. With a 3-1/2 digit LCD display, it provides clear and accurate readings. Safety features like overload protection and automatic polarity indication ensure safe and efficient measurements. Whether you're a professional electrician, hobbyist, or DIY enthusiast, the ATD-5544 is an essential tool for various electrical tasks.
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AC VOLTAGE MEASUREMENT
Set the FUNCTION and RANGE switch to desired ACV position and connect the test leads across the source or load under measurement.
DC CURRENT MEASUREMENT
Set the FUNCTION and RANGE switch to DCA position.
Connect test leads IN to a circuit turn.
RESISTANCE MEASUREMENT
Set the FUNCTION and RANGE switch to desired ohm range, if the resistance being measured is connected to a circuit turn off power and discharge all capacitors before applying probes.
DIODE TEST
Set the FUNCTION and RANGE switch to 2k/Diode position, connect test leads ac ross the diode. RED probe to the anode of the diode and black to the cathode.
BATTERY TEST
Set the FUNCTION and RANGE switch to BATT position.
Connect test leads to the terminals of the battery under test.
Read display value and decide if the battery is OK
MAINTENANCE CAUTION:
Remove from any energized circ uits to avoid shock hazard.
Fuse rarely need replacement and blow almost always as a result of operator error. If "BAT" appears on display, this indicates that the battery s hould be replaced. To replace battery remove screw in the bottom of case - remove the old and replace with a new one. Be careful to observe polarity. To replace Fuse (200mA/250V) remove the screw in the bottom of the case, simply remove the old and replace with a new one.
ESI * 262-279-1400 * www.esitest.com
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ATD-5544 INSTRUCTION MANUAL
MINI DIGITAL MULTIMETER
!
WARNING
• This product contains lead, a chemical known in the state of
California to cause cancer, birth defects and other reproductive harm.
• Wash hands after each use.
GENERAL
Before attempting to operate the instrument, become familiar with each control. A thorough understanding of how the instrument operates will avoid undue mistakes and minimize measurement errors, instrument damage and the possibility of personal injury.
FRONT PANEL DESCRIPTION
1. CASE
2. POWER SWITCH
3. 3-1/2 DIGIT LCD DISPLAY
4. FUNCTION AND RANGE SWITCH
5. "V Ω mA" JACK
6. "COM" JACK
SPECIFICATIONS GENERAL
DISPLAY: 3-1/2 digit LCD with a max reading of 1999
POLARITY: Automatic (-) negative polarity indication
ZERO ADJUSTMENT: Automatic
OVER RANGE INDICATION: only the digit '1' is displayed.
POWER: 12V Alkaline Manganese button cells A23
EI12(Japan) or optional.
DIMENSIONS: 100mm long x 48mm wide x 26mm thick
NET WEIGHT: 104g (including battery)
ELECTRICAL SPECIFICATIONS
Accuracies are guaranteed for 1 year, 23 ℃ ± 5 ℃ less than
75% RH
DC VOLTAGE
200m, 2V, 20V, 200V, 500V ± 0.5%rdg ± 2d
Impedance: 1M ohm
OVERLOAD PROTECTION: 500V rms
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AC VOLTAGE
200V, 500V (40Hz-400Hz) ± 2.0%rdg ± 5d
Impedance: 450k ohm
OVERLOAD PROTECTION: 500V rms
RESISTANCE:
200,2000,20k,200k,2000k ± 1.5%rdg ± 4d
DC CURRENT:
2000 μ , 20m, 200mA ± 2.0%rdg ± 2d
OVERLOAD PROTECTION: 200mA/250V fuse
DIODE TEST
Test current: 1.6mA MAX
Test voltage: 3.2V MAX
BATTERY TEST
Range: 9V
Test current: 6mA
OPERATION:
· The mark "1" is for warning that the input voltage should not exceed the indicated values. This is to prevent damage to the internal circuitry.
· The range switch should be set to the range which you want to test before operation.
DC VOLTAGE MEASUREMENT
Set the FUNCTION and RANGE switch to desired DCV position and connect the test leads across the source of load under measurement. If the test voltage is not known beforehand, then set the range switch to the highest 500V range and work down. The polarity of the red lead connection will be indicated at the same time as the voltage.
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