Manual
Data Logger Manual
Page 15
 Backlight
  Like the display, the LCD screen’s backlight also has power saving
  options. The backlight can be either on continuously, off, or set to
   automatically shut off after 30 seconds of inactivity. This option
   can be changed by fi rst pressing the F2 key to highlight the back
  light parameter confi guration tab. Once the tab is highlighted the
  option can be changed by pressing the F2 key repeatedly or using
  the UP and DOWN keys to select either “On”, “Off” or “Auto”.
LED Modes
  The function of the two LEDs on the upper left corner of the 
  DLI-R can be regulated by fi rst pressing the F3 key to highlight
   the LED parameter confi guration tab. Once the tab is highlighted
   the option can be changed by pressing the F3 key repeatedly
   or using the UP and DOWN keys to select either “Enabled” meaning
  the LEDs will light to indicate device function or “Disabled” meaning  
  the LEDs will never light.
  5.5.ii.b Display Update Mode
  Selecting “MORE” by either pressing the F4 key or “OK” key while
  viewing the Power Modes screen brings up the Display Update Mode
   screen. On this screen, options relating to the refresh rate of the 
  screen are displayed. The F1 key toggles between ‘auto’ and
  ‘reading’ modes. In ‘auto’ mode, the display is updated periodically,
  whereas in ‘reading’ mode, the display only updates after a reading is 
  taken. F2 selects the update period option. Pressing the “UP” and
  “DOWN” keys increase and decrease the update period respectively.
  5.5.ii.c Power Status
  Selecting “MORE” by either pressing the F4 key or the OK key while
  viewing the Display Update Mode screen brings up the Power Status
  screen. On this screen the battery type is displayed and should be
  changed by the user based on whether a Lithium or Alkaline battery
  is used in the DLI-R. This can be changed by fi rst  pressing
  the F1 button to highlight the type parameter confi guration  tab.
  Once the tab is highlighted, the battery type can be changed by
  either pressing the F1 key repeatedly or by using the UP and DOWN
  arrows to select the correct battery type. The percent battery power
  remaining, external power presence, battery voltage and external
  power voltage are also displayed on the Power Status screen.










