Midmark Preva - Changing Default Exposure Settings

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Preva Dental X-ray System User Manual, 00-02-1576, Revision ZA1

Changing Default Exposure Settings

The operator can adjust image density for all of a receptor’s presets simultaneously or change each of

the technique factors individually. Default settings can also be restored. For charts of the factory default

settings, refer to the Default Exposure Times section on page 26.

If the 30 cm (12 inch) cone is to be used, configure the device for use with it before changing default

exposure settings. This will reset exposure settings to the defaults used with the 30 cm cone.

Before changing presets, use one of the Exposure Settings tables (page 32 for the 20 cm/8 in. cone,

page 33 for the 30 cm/12 in. cone) to record the presets being programmed.

Displaying the

Preset Options

1. From the Main System Configuration menu (see Figure 4), select CHANGE

PRESETS. The Preset Options menu shown in Figure 6 will be displayed.

2. Select EXIT to return to the Main System Configuration menu.

Figure 6

Preset Options Menu

Changing All

Receptor

Settings Globally

1. Select ALTER DENSITIES from the Preset Options menu. The first Image

Receptor Type will be displayed showing the selected Image Receptor

Type and the current density.

2. Use the Image Receptor Type button to select the image receptor to adjust.

3. Use the up and down arrows to specify the percentage by which densities

will be increased or decreased for the selected receptor. Densities can be

increased or decreased according to the values on the display.

4. Press Enter to save the changes.