| 摘要 |
<p>An input section (100) outputs a digital signal representing a characteristic value corresponding to a measurement range of an input signal. The digital signal is then stored in a memory (1). A display (2) displays the digital signal stored in the memory (1) as an image which is developed along one of the two-dimensional coordinates axes and represents the predetermined characteristic value. A zone setting section (6) outputs zone width data for setting, as a marker zone, a portion including a desired range of the one axis for the image displayed on the display (2). A zone display controller (5) causes the display (2) to display the marker zone, in accordance with the zone width data. A detector (3) reads out the digital signal within the desired range of the one axis, from the memory, in accordance with the zone width data, and detects the specific characteristic value in the readout digital signal. A display (4) controller causes a display (2) to display detected specific characteristic value data.</p> |
