MT-1503 SMART Multimeter Instruction Sheet
Read First: Safety Information To ensure that the tester is used safely, follow these instructions: Do not use the DMM if the tester or test leads appear damaged or if you suspect that the DMM is not operating properly. Disconnect the live test lead before disconnecting the common test lead. When using the test leads, keep your fingers behind the finger guards on the test leads. Do not apply more than 600V rms between a DMM terminal and earth ground.
safeguards within this equipment. 1. Automatic Selection Insert the red test lead to the “V/OHM” jack, and the black test lead to the “COM” jack. When turned on, the DMM powers up in SCAN mode.”SCAn” will appear in the LCD. Test the object by 2 test leads, you’ll get the tested AC, DC voltages or resistance. The DMM automatically selects the appropriate measurement mode and range.
Resistance measurement Refer to Automatic Selection. Without exterior voltage, the DMM shifts to resistance measure mode when the resistance in the input terminal is below 40MΩ. The tested resistance will be shown with figures, accompanying corresponding units Ω，kΩ or MΩ. In resistance measure mode, do not impose voltage on the test resistance or it may be damaged or operated incorrectly. DC and AC Voltage measurement Refer to Automatic Selection. When the Volts DC is above +0.7V or -0.
value will not exist any more. It begins at 0V to measure the voltage range. DC and AC Current measurement Refer to Automatic Selection. When the current is above 5mA, the DMM enters current measure mode automatically. The LCD will indicate the current with DC or AC and its shown with figures in the corresponding units A or mA Warning To avoid damage to the meter or injury if the fuse blows, never attempt an in-circuit current measurement where the open-circuit potential to earth is greater than 250V.
In auto selection status, “Just one key selects the measurement function” mode happens if this key is pressed when “SCAn” appears in the LCD. Continuously press this key, DMM will exit the status of auto selection and then enter the specific measure mode, DCV, ACV, OHM, Diode, Continuity, Capacity, SCAN can be selected in turn. “SCAn” appearing in the LCD means it returns to auto selection mode. ②. HOLD BUTTON a. Hold button is the reading hold button that acts with trigger.
d. Auto power-off functions are cancelled after entering MAX/MIN mode. e. Press and hold MAX/MIN button more than 2 seconds, it exits out MAX/MIN mode. f. In auto selection mode, the button has no effect on them. 3. Just one button selects the measurement function “Just one button selects the measurement function” mode happens if SELECT button is pressed when “SCAn” appears in the LCD.
a. Connect the black test lead to "COM" socket and red test leads to the "VΩHz" socket. b. Press SELECT button to “Ω” or “ c. Connect the probes across circuit to be tested. d. Caution: Ensure that the circuit to be tested is "dead". (no live voltage present) ”,” ” position. Capacitance measurement a. Before testing, discharge the capacitor by shorting its leads together. Use caution in handing capacitors because they may have a charge on them of considerable power before discharging. b.
Other Functions ①. Beeper Function a. When the key is pressed, the beeper beeps one short sound. b. Beeper will keep 5 sounds for warning in 1 minute before auto power off, and beep 1 sound before power off. c. In auto selection mode, it effects and sounds only while pressing SELECT key with “SCAn” on the LCD. ②. Auto Power-OFF a. If the buttons of the meter have no action within certain time, the system will be power off automatically (sleep mode). It’s 10 minutes to auto power off.
If the battery is weak, a " " symbol will appear on the left of the display. It means that the battery should be replaced. Battery: 1.
Service and Parts This DMM should be serviced only by a qualified service technician. Specifications Maximum Voltage: Between any Terminal and Earth Ground 600 V rms. Display: 3 3/4-digits, 4000 counts, updates 3/sec. Overload Indication: “OL” show on right up of the LCD. Use environment: Temperature 32 to104°F (0°C to 40°C), humidity< 85% RH. Storage environment : Temperature Altitude: Operating under 2000m, Storage under 10,000m Battery Type: Alkaline 1.
At Smart Mode Function ACV DC V Ω Range Resolution Accuracy 4.000V 1 mV ±(0.8% +3) 40.00V 10 mV ± (0.8% +3) 400.0V 0.1 V ± (0.8% +3) 500V 1V ± (1.2% +3) ±4.000 V 1 mV ± (0.5% +3) ±40.00 V 10 mV ± (0.5% +3) ±400.0 V 0.1 V ± (0.5% +3) ±500 V 1V ± (0.8% +3) 400.0 Ω 0.1 Ω ± (1% +5) 4.000 kΩ 1Ω ± (1% +3) 40.00 kΩ 10 Ω ± (1% +3) 400.0 kΩ 0.1 k Ω ± (1% +3) 4.
AC A (50 to 400Hz) DC A 40.00 MΩ 10 kΩ ± (2% +3) 005.0~400.0mA 0.1mA ± (2.5% +5) 4.000A 1mA ± (2.5% +5) 005.0~400.0mA 0.1mA ± (2% +5) 4.000A 1mA ± (2% +5) Input maximum: 600Vrms Current Measurement Overload Protection: 10A/250V Fuse. At 3 Buttons Selecting Mode Function AC V (40 to 400Hz) Range Resolution Accuracy 400.0mV 0.1 mV ±(1.2% +3) 4.000V 1 mV ± (0.8% +3) 40.00V 10m V ± (0.8% +3) 400.0V 0.1 V ± (0.8% +3) 500V 1V ± (1.
DC V Ω AC A (40 to 400Hz) DC A Capacity ±400.0 mV 0.1 mV ± (0.5% +3) ±4.000 V 1 mV ± (0.5% +3) ±40.00 V 10 mV ± (0.5% +3) ±400.0 V 0.1 V ± (0.5% +3) ±500 V 1V ± (0.8% +3) 400.0 Ω 0.1 Ω ± (1% +5) 4.000 kΩ 1Ω ± (1% +3) 40.00 kΩ 10 Ω ± (1% +3) 400.0 kΩ 0.1 k Ω ± (1% +3) 4.000 MΩ 1 kΩ ± (1% +3) 40.00 MΩ 10 kΩ ± (2% +3) 005.0~400.0mA 0.1mA ± (2.5% +5) 4.000A 1mA ± (2.5% +5) 005.0~400.0mA 0.1mA ± (2% +5) 4.
400µF~4000µF Continuity Diode 0.1µF Less than 100Ω Approx. Test voltage : Approx. 2.
15
