Page 246 - Gas Detection Systems Training Manual

8.3.5.1.3 Set Screen Saver Options Screen
Setting the screen saver settings is accomplished after selecting this option from the Supervisor Configuration Menu. Here you can make changes and test them- especially the normal brightness and contrast of the LCD display without leaving the screen, whereas testing the screen saver takes you away and returns to the home screen, where you will have to come back to the Screen Saver Settings Screen to make any further changes if needed.
Seconds Until Screen Saver: Changing this setting allows you to vary the time delay from when a screen enters until it is automatically brought to the screen saver with no user key/touch activity. When returning from the screen saver, the system will revert back to the home screen regardless of where the screen saver started from. Valid values are from 10 seconds to 300 seconds.
Normal Brightness and Normal Contrast: These values define how the normal screens appear- how bright, and how much contrast. These values do not apply to the screen saver. Valid values are between 5 and 100 percent. Depending on the LCD angle, contrast values should not generally exceed 55 or the screen will wash out. Brightness however, may need to be near 100 depending on the operating environment, and assuming a brightly lit area. If the area is low light, then the brightness can bee reduced.
Screen Saver Brightness and Contract (Backlight): These values define how the screen saver appears. The goal of the screen saver is to greatly extend the life of the LCD backlight, which can be rather short if left on and on high contrast and brightness for long periods of time. The contrast value can remain the same as normal if desired, however the main value to change is the brightness, since this directly controls the backlight level. This value should be set to 5 or 10 percent- just enough to barely see that something is there.
Sensor Electronics Corporation 5500 Lincoln Drive Minneapolis, Minnesota 55436 September 29th, 2006
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SEC 3500 OI Supervisor Operator’s Manual Version 2.1.0095