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to select parameters, and the sample value and error will display
on the LCD. You can modify sample value and error by operating
direction arrows. Select the modification item by operating Ok
button, and confirm the settings. Press Comparison button again
to quit selection mode.
6.4. Deviation proportion measurement
When the instrument is turned on, the instrument will switch to
single measurement mode for the objects to be tested. Insert
reference object in measurement port, press Relevant
Measurement button to save the current vale (D
CUR
) as reference
value (D
REF
). At this time, REL will display on the LCD. Insert
the object for measuring in the measurement port and press
Relevant Measurement button again. At this time, REL will
flash on the LCD the reference value will display on the main
display, and the deviation proportion REL% will display on the
secondary display, REL%=(D
CUR
-D
REF
)/D
REF
*100%. When D
CUR
is more than two times of D
REF
, OL% will display on the
secondary display. Press Relevant Measurement button for more
than 2 seconds to quit the measurement state.
6.5 Data Hold function: press Hold button to stop reading
measurement value and show the current measurement value on
the main display continuously. At this time, only Communication
and Backlight keys are available. Press the Hold key again to
return normal measurement mode.
7. Additional functions
7.1 Auto power off function: To prolong battery life, when the
external power supply is not used, APO will display on the LCD,
which means that auto power off is available. The instrument will
automatically power off without any operation for 5 minutes.
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