3.9.15Optional setting

Operation environments are set on the Optional Setup dialog window.

To open the Optional Setup dialog window, select the Optional Setup command from the

Option menu or click the Opt Setup button on the tool button area of the operation panel.

.The dialog window has 5 tabs. Each has functions as follows.

(1) General tab : general setting

(a) RASTER ROTATION area

WD-Rotation selection specifies if the image rotation caused by the objective lens magnetic field is compensated automatically or not. For normal operation, it is strongly recommended to enable the automatic compensation function.

(b) LOW MAG MODE area

Select the highest magnification in the Low Mag Mode. Use [x2k] for usual operation. [x10k] is only for special requirements. Image distortion caused by field magnetic disturbance may appear at magnification higher than x2k.

(c) MICRON MARKER area

When Sizable is selected, the length of the micron

marker will be adjusted so as the length indication do not have fraction.

If Fixed is selected, the length is fixed to 30mm on 4x5 inches photograph. In this case, the length value indication some times has fraction, especially by coarse focusing.

(d) DATA ENTRY / MEASUREMENT area

Select font and size to be used in Data Entry and CD Measurement.

(e) PRINT SIZE

Set the size of images when placed on a page using Windows application software. The setting is effective only on application programs those support the X and Y-Resolution tags of Tiff files or equivalent header of DIB files. The Aldus Page Maker supports TIFF files and MS Word also DIB files.

4x5 Photo Size button sets the value just same as photograph size.

(f) SIGNAL SELECT

When the U/L SED Ratio Variable box is checked, in Mix mode the gain ratio of upper and lower SE detector is kept to which upper and lower detectors are used independently. It is effective to control ratio of signals detected by both detectors.

If it is not checked, ratio of both two detectors is even. In this case upper detector signal will be dominant at short working distance and lower detector signal at long working distance. The latter may be easier to usual operation.

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