ViewEra V191HV - Manual (Page 10)

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b. Press UP or DOWN to increase or decrease the contrast of the display. Then press “1” to confirm the
adjustment and back to OSD main menu.
2) Brightness
a. Press UP or DOWN to move the highlight to Brightness and press “1” to enter.
b. Press UP or DOWN to increase or decrease the brightness of the display. Press “1” to confirm the adjustment
and back to OSD main menu.