Victor 81C/81D Digital Multimeter is a stable and reliable 3 3/4 bit digital multimeter. It can be used to measure DC voltage, AC voltage, DC current, AC current, resistance, temperature, capacitance, frequency/duty cycle, diode and continuity test. It also features unit symbol display, automatic/manual range switching, automatic power off and alarm functions. The whole machine adopts a 8-bit microprocessor that can directly drive the LCD and a double integration A/D conversion integrated circuit, which provides high resolution and high accuracy digital display driver. This meter is fully featured, with high measurement accuracy and easy to use. It is an ideal tool for laboratories, factories, radio enthusiasts and households.
This manual introduces the Victor 81C/81D digital multimeter, describing its LCD display, measurement functions and key controls. It includes sections on product overview, unboxing checklist, safety precautions, panel and button functions, additional features, specifications, maintenance and troubleshooting.
The guide explains how to use the auto‑shutdown feature, battery replacement, and proper safety practices when measuring high voltages or currents. It also provides detailed troubleshooting steps and contact information for service support. This manual is written in Chinese.
| Display type | LCD |
|---|---|
| Measurement method | Dual‑integration conversion |
| Conversion rate | ≈ 1 measurement per second |
| Power source | Two AA (1.5 V) batteries |
Read the safety notes, set the function switch to the correct range, ensure probe contacts are secure and insulated, and avoid measuring voltage when the probes are inserted in the current socket.
Press and hold any function key while powering on; this disables the automatic shutdown.
It uses two AA (1.5 V) batteries.
The instrument uses a dual‑integration conversion method for measurements.