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17
In max/min value inquiry mode, press “MAX/MIN” key
once, you will switch MAX to MIN or MIN to MAX;
Press and hold “MAX/MIN” for one second, “MAX/MIN”
on top LCD interface will disappear, and the max/min
value inquiry mode will exit.
Figure 3-1-3
Tips
In non-zero calibration mode, press and hold “MAX/MIN”
key for a short time to use the max/min value inquiry
functions;
Application of data hold and zero calibration mode
Press and hold “HOLD/ZERO” key for a short time,
“HOLD”
will appear on the top left position of the LCD
interface (as shown in 3-1-4A), then the device will
enter the data hold mode;
Press and hold the key again, “HOLD” on the top left
position of the LCD interface will disappear, and the
meter will exit the data hold mode;
Cover the opto-sensor with the visor, and press and
hold “HOLD/ZERO” key for one second, “ADJ” will
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