MASTECH MY78 Digital Multimeter Multimetro Digital User Guide
How to Download
Safety Instructions
The special attention should be paid when using the test and measurement instrument because the improper usage may cause electric shock and damage the equipment.
- Use proper measurement category (CAT), voltage, and amperage rated probes, test leads, and adapters for the measurement.
- Do not use or store the device around explosive gas, vapor, or under high temperature and humidity.
- When handling the test probes and crocodile clips, keep your fingers behind the physical guard.
- Examine the measuring test leads (if present) before use. Any element of which the insulation is deteriorated (even partially), replace them with proper functional test leads.
- Connect the common test lead before the live test lead and remove the live test lead before the common test lead.
- Before measuring current, make sure the instrument fuses available and disconnect the power supply to the circuit test
- Remove the batteries if the device is not used for an extended period of time, or if stored in temperatures above 45 °C. If the batteries are not removed, battery leakage can damage the device.
Contents
Specifications
Range | Resolution | Accuracy | |
| V~ | 400 mV 4V/40V/400V 600V | 0.1mV 1mV/10mV/0.1V 0.1V/1V | ±(3.0%+3) ±(0.8%+3) ±(1.2%+3) |
V | 400mV/4V/40V/400V 600V | 0.1mV/1mV/10mV/0.1V 0.1V/1V | ±(0.7%+2) ±(0.8%+2) |
| A~ | 400μA/4000μA/40mA/400mA 10A | 0.1μA/1μA/10μA/0.1mA 1mA/10mA | ±(1.5%+5) ±(3.0%+7) |
| A | 400μA/4000μA/40mA/400mA 10A | 0.1μA/1μA/10μA/0.1mA 1mA/10mA | ±(1.2%+3) ±(2.0%+10) |
| R | 400Ω/4kΩ/40kΩ/400kΩ/4ΜΩ 40ΜΩ | 0.1Ω/1Ω/10Ω/0.1kΩ/1kΩ 0.01MΩ | ±(1.2%+2) ±(2.0%+5) |
| C | 4nF 40nF/400nF/4μF/40μF/200μF | 1pF 0.01nF/0.1nF/1nF/10nF/0.1μF | ±(4.0%+25) ±(4.0%+15) |
| Hz | 10Hz/100Hz/1kHz 10kHz/100kHz/200kHz >200kHz | 0.01Hz/0.01Hz/0.1Hz 1Hz/10Hz/0.1kHz 0.1kHz | ±(2.0%+5) ±(2.0%+5) Reference |
| Hz% | 5% ~ 95% | 0.1% | ±(2.0%+2) |
| A~ For Clamp Meter | 40A 400A | 1A/1mV 1A/1mV | ±(1.0%+3) ±(1.0%+3) |
| A For Clamp Meter | 40A 400A | 1A/1mV 1A/1mV | ±(0.8%+3) ±(0.8%+3) |
Battery Installation
How to Connect
Current Checkup
hFE
Mounting ON/OFF
ADP
Hz
