This manual introduces the features, operation and maintenance of the 287/289 True-rms Digital Multimeters.
This manual introduces the Fluke 287 and 289 True‑RMS digital multimeters, covering safety guidelines, symbol definitions, and the layout of the front‑panel controls. It explains how to use core functions such as auto‑repeat measurement, input alert, low‑pass filtering, and dB measurements, as well as how to adjust display contrast and configure the rotating switch.
The document also contains the warranty terms (ten‑year coverage for the instrument and LCD), registration instructions, and detailed technical specifications including voltage, current, resistance, temperature, and frequency measurement capabilities. Service and repair procedures are provided for authorized service centers. This manual is written in Chinese.
| Common mode rejection ratio | 120 dB at 50/60 Hz |
|---|---|
| Input impedance | 10 MΩ |
| Maximum voltage rating | 1000 V |
It provides an audible or visual alert when the measured input exceeds a user‑defined limit.
Use the contrast adjustment control on the front panel to set the desired display contrast.