ViewEra V191 - Manual (Page 10)

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b. Press “” or ““ 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 “” or ““ to move the highlight to Brightness and press “ 1 ” to enter.
b. Press “” or ““ to increase or decrease the brightness of the display. Press “ 1 ” to confirm the
adjustment and back to OSD main menu.