Xylem 6308DT INDUSTRIAL DISSOLVED OXYGEN TRANSMITTERS - Manual (Page 6)

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3. The [ ] UP key. During Calibration/Setting mode, this key will
increment the current blinking digit of the active parameter.
4. The [ ] DOWN key. During Calibration/Setting mode, this key will
decrement the blinking digit of the active parameter.
5. The [ ] ENTER key. During Calibration/Setting mode, this key will
save the current modified parameter and move to the next parameter on
the page. If the parameter is the last one in the page then it will move to
first parameter on the next available page.
6. The [ ] LIGHT key. This key will turn on or turn off the backlight of
the LCD. The backlight will automatically turn off if there is no key
activity for about two minutes.
7. LCD screen.
b) NORMAL MODE DISPLAY
1. S:, P: - Salinity and Pressure settings.
2. CURRENT OUT - this will display the actual reading of the 4-20 mA
output. At POWER-ON, this will show "OFF." for about 3 seconds before
going to main display mode. After exiting the Calibration /Setting pages, a
"FROZEN" message will be displayed for about 3 seconds if the unit is
not password locked.
3. annunciator - This will be displayed if Calibration/Setting pages are
password locked meaning the user cannot change the values unless the
correct 4 digit number has been entered.