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5
B. Operational Keys Description
Figure 2
NO.
Key
Description
1
MODE-
In the measure mode, this key will change the DO display to DO % or DO ppm.
In the Calibration/Setting mode this key will move to the next digit of the current
active parameter.
In the Calibration/Setting mode, pressing this key for two seconds will move the
user back to the previous parameter.
2
CAL/VIEW-
Pressing this key for about two seconds, during normal display mode will switch
to Calibration/Setting mode.
During Calibration/Setting mode, pressing this key will switch to the next
available Calibration/Setting page. Pressing this key at the last User/Calibration
page will return the user to the normal display mode.
3
UP-
During Calibration/Setting mode, this key will increment the current blinking digit
of the active parameter.
4
DOWN-
During Calibration/Setting mode, this key will decrement the current blinking
digit of the active parameter.
During pH calibration, the user can press this key to recalibrate the stand or
slope buffer again.