CipherLab 5000 Hardware Manual page 61

Configuring 5000/5100:
System Menu
Settings > Backlight Period
Set the backlight duration for the keypad and LCD.
Enter a value between 0 and 99999.
Screen 5: System Menu> 2. Settings> 2. Backlight Period
Settings > CPU Speed
Set the CPU speed to save power if necessary. The current value is highlighted.
Options include: Full, Half, Quarter, Eighth and Sixteenth.
Screen 6: System Menu> 2. Settings> 3. CPU Speed
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