ຂ່າວ EMIN

The Fluke 289 is a high-performance True RMS digital multimeter designed for industrial applications. It features advanced data logging and review capabilities, allowing measured values to be recorded and displayed as trend graphs directly on the instrument. With up to 14× zoom, users can inspect and analyze recorded data direct on the display

An oscilloscope plots a graph of an electrical signal. In most applications, the graph shows how the signal changes over time: The vertical (Y) axis represents voltage and the horizontal (X) axis represents time. The intensity or brightness of the display is sometimes called the Z-axis. This simple graph can tell us a lot about a signal.