Model 90 Quantifier Sound Level Meter
Page 37
Instrument Setup
Select the Setup option from the main menu and press OK.
Key Press
Display
Comments
Display Contrast
To adjust the contrast of the display, select the Contrast Option and press OK
Key Press
Display
Comments
Select the Lighter or Darker option
and press the OK repeatedly to
adjust the selection.
Press the Exit button to exit from
the Contrast menu.