5-126. On the File Name dialog box that appears, enter a name up to eight characters long andthen press w.• This saves the background image under the name you specify. It also changes the imagespecified for the “Background” item on the Setup screen to the newly saved backgroundimage.k Adjusting the Lightness (Fade I/O) of the Background ImageYou can adjust the lightness of the graph screen background image specified by the“Background” setting on the Setup screen within a range of 0% (as-is) to 100% (all white).A higher setting value makes the image lighter, and a setting of 100% displays an all whitebackground.→You can use this setting to adjust the background image to a level that makes the graph easierto see.• Note that the lightness setting can be adjusted only when the background image is a 16-bitimage data.• After you adjust the lightness level, the setting is stored with the background image.u To adjust the lightness (Fade I/O) of the background image1. While the graph screen is on the display, press K3(FadeI/O). If you are in the DynaGraph mode, press K1(FadeI/O).• This causes a slider for adjusting image lightness to appear on the display.2. Use d and e to adjust the lightness value.• Each press of d or e changes the setting value in steps of 5%.• You can also input values directly, if you want. To specify a lightness value of 20%, forexample, press caw.3. After the setting is the way you want, press J.