Vanguard CT-8000 - Manual (Page 13)

REV 2 CT-8000 USER’S MANUAL
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2.0 PRE-TEST SETUP
2.1 Operating Voltages
The CT-8000’s operating voltage is selectable between 110-120 Vac, 50/60 Hz and 220-240 Vac,
50/60 Hz. Operating voltage is set by the voltage selection switch as shown in Figure 2. To
change the voltage setting, remove the CT-8000 from its enclosure, locate the voltage setting
switch on the right side of the unit, and set the new operating voltage.
Figure 2. CT-8000 Operating Voltage Setting Switch
2.2 LCD Screen Contrast Control
To increase the LCD screen contrast, press and hold the [PAPER ∧ Contrast] key for two
seconds. Release the button when the desired contrast level has been reached.
To decrease the LCD screen contrast, press and hold the [PAPER ∨ Contrast] key for two
seconds. Release the button when the desired contrast level has been reached.