MASTECH MAS830L Digital Multimeter

Quick Start Guide

Important Safety Precautions

Special attention should be paid when using the test and measurement instrument because improper usage may cause electric shock and damage the equipment.

Use proper measurement category (CAT), voltage, and amperage rated probes, test leads, and adapters.
Do not use or store the device around explosive gas, vapor, or under high temperature and humidity.
When handling test probes and crocodile clips, keep fingers behind the physical guard.
Examine test leads before use. Replace any with deteriorated insulation.
Connect the common test lead before the live test lead, and remove the live test lead before the common test lead.
Before measuring current, ensure instrument fuses are available and disconnect power to the circuit.
Remove batteries if the device is not used for an extended period or if stored above 45°C to prevent damage from battery leakage.

(This section is translated into Spanish, French, Chinese, Japanese, and Russian in the original document.)

Specifications

Measurement	Range	Resolution	Accuracy
Voltage (V=)	200mV/2V/20V/200V/600V	0.1mV/1mV/10mV/0.1V/1V	±(0.5%+3) / ±(0.8%+5) / ±(1.2%+10)
Current (A=)	20μA/200μA/2mA/10mA/10A	0.01μA/0.1μA/1μA/0.1mA/10mA	±(1.0%+3) / ±(1.5%+5) / ±(3.0%+10)
Resistance (Ω)	200Ω/2kΩ/20kΩ/200kΩ/2MΩ	0.1Ω/1Ω/10Ω/100Ω/1kΩ	±(0.8%+5) / ±(0.8%+2) / ±(1.0%+5)

Basic Operations

The following diagrams illustrate basic operations:

Battery Installation: Shows the process of opening the battery compartment and inserting batteries.

[Diagram showing battery installation]

DC Voltage Measurement (V=): Connect the red probe to the VΩmA jack and the black probe to the COM jack. Set the dial to V=. Connect probes across the voltage source. Example shows 12.56V.

[Diagram showing DC Voltage measurement setup]

AC Voltage Measurement (V~): Connect the red probe to the VΩmA jack and the black probe to the COM jack. Set the dial to V~. Connect probes across the AC voltage source. Example shows 220V.

[Diagram showing AC Voltage measurement setup]

DC Current Measurement (A=): Connect the red probe to the 10A or mA jack (depending on expected current) and the black probe to the COM jack. Set the dial to A=. Connect the multimeter in series with the circuit. Example shows 150.6mA.

[Diagram showing DC Current measurement setup]

Resistance Measurement (Ω): Connect the red probe to the VΩmA jack and the black probe to the COM jack. Set the dial to Ω. Connect probes across the resistor. Example shows 1005Ω.

[Diagram showing Resistance measurement setup]

Continuity Test (Beep Symbol): Connect the red probe to the VΩmA jack and the black probe to the COM jack. Set the dial to the continuity symbol (looks like a sound wave or diode symbol). If continuity exists, the multimeter will beep. Example shows a reading of 35Ω, indicating continuity.

[Diagram showing Continuity Test setup]

Transistor hFE Measurement: Insert the transistor into the hFE socket, ensuring correct pin orientation (NPN or PNP). Set the dial to hFE. The multimeter displays the transistor's gain (hFE). Example shows a reading of 100.

[Diagram showing Transistor hFE measurement setup]

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MASTECH MAS830L Digital Multimeter

Company Information

Important Safety Precautions

Specifications

Basic Operations

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