Thermo Fisher Scientific CyberScan DO 5000 - Manual (Page 35)

Instruction Manual CyberScan DO5000
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This option allows you to change the contrast on the screen to
improve the readability of the information presented on the screen.
The numbering system that appears on the screen is from 0 to 25.
The darkest setting is 0 and the lightest setting is 25.
To Set Display Contrast
1. Access the Set Display Contrast screen from the System Setup
screen. The current display contrast value is displayed on the
screen.
2. Use the lighter or darker button to adjust the contrast of the
screen to the desired level.
3. Touch save to accept the contrast setting and return to the
System Setup screen.
OR
Touch exit to return to the System Setup screen, without making
any changes.
The display contrast of the screen is affected by the internal
temperature of the meter. The meter will warn up after being plugged
in. during this period (approximately 20 minutes), the display contrast
of the screen will get lighter. You may need to adjust the contrast
during this period to meet your specifications.