詳細資料：
Tektronix TDS544A Oscilloscope, Digital: 500MHz,1GSa/s,4ch （Stand alone）
The Tektronix TDS544A oscilloscope is a graph-displaying device – it draws a graph of an electrical signal. In most applications, the graph shows how signals change 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.
The Tektronix TDS544A oscilloscope''''s simple graph can l you many things about a signal, such as: the time and voltage values of a signal, the frequency of an oscillating signal, the “moving parts” of a circuit represented by the signal, the frequency with which a particular portion of the signal is occurring relative to, other portions, whether or not a malfunctioning component is distorting the signal, how much of a signal is direct current （DC） or alternating current （AC） and how much of the signal is noise and whether the noise is changing with time.
儀器保證：
我們的大多數設備在裝運之前均經過嚴格的質量檢測與校驗。也可申請國家計量證書。
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