Key facts
- Manuals
- 1
- Languages
- ZH
- Last added
- 2012-03-16
Featured M840D manuals

M840D Digital Multimeter User Manual
This manual introduces the M840D handheld digital multimeter, describing its robust construction, LCD display, and measurement capabilities for voltage, current, resistance, capacitance, temperature, frequency, and diode/continuity tests. Safety precautions, battery and fuse replacement, and proper probe handling are also covered.
Detailed sections explain how to select ranges, connect probes, and interpret readings for DC/AC voltage, DC/AC current, resistance, capacitance, temperature, and frequency measurements, along with special functions such as data hold and hFE testing. This manual is written in Chinese.
Covers: 概述 · 一般特性 · 电气特性 · 测量前的准备与注意事项 · 测量方法 · 电池及保险丝的更换
Latest M840D manuals
M840D Digital Multimeter User Manual
User Manual 8 pages · 206 KB · ZHThe M840D digital multimeter user manual provides safety instructions, specifications, and step‑by‑step measurement procedures.
Which document do I need?
User Manual
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in M840D manuals
What is the maximum input voltage for DC measurements?
Do not exceed 1000 V for DC voltage; higher voltages may damage the instrument.
How can I measure resistance larger than the selected range?
If the display shows “1”, the range is overloaded; turn the range selector to a higher range before reading the value.
