| 摘要 |
PURPOSE:To facillitate the determination of an analyzing point, and to indicate clearly the determined position on a photograph by displaying the analyzing position on a sample simultaneously to the sample image. CONSTITUTION:Deflected electrode voltage controlling signals -VX-+VX are generated by a D/A converter 25, and are sent to a deflected electrode voltage generator 31 and a CRT28. A cursor controlling part 26 is operated by operating a cursor designating key 27, and a counter 24 is set to the value corresponding to the cursor position. A digital output 23 of the counter 24 and a digital output 33 of a counter 30 are sent to a comparator 21, a video signal controller 22 is controlled to rise the brightness of the CRT28 at the point where both are coincide with each other, and the cursor is displayed on the CRT28 simultaneously to the usual image. Here, when performing the spot analysis on the coincident point P of both cursors of X axis, Y axis, the signal of the output 33 is sent to the converter 25 by a selector 23, the electrode voltage controlling signal corresponding accurately to the position of the P point is sent out, and the spot analysis result 29 of the P point is obtained. |
