Function Key Description; Hold Key; Key; Range Key - HT Instruments HT4010 User Manual

4.2 FUNCTION KEY DESCRIPTION

4.2.1 HOLD key

By pushing HOLD key the parameter's measured value is frozen on the display and the
symbol "HOLD" appears on it. Pushing HOLD key another time deactivates this mode.
4.2.2

key

By pushing and hold
the display. By pressing and hold
waiting the automatically disable after about 20 seconds. The function is available on each
position of the rotary selector.

4.2.3 RANGE key

By pushing RANGE key, the manual mode is activated and the "AUTO" symbol
disappears from the display. Press RANGE cyclically to change the measuring range and
fix the decimal point on the display. For reading more than the maximum range the "OL"
indication is shown at display. To exit this function keep RANGE key pressed for at least 1
second or rotate the selector to another position. This feature is disabled for AC current
diode test and continuity test measurements.

4.2.4 MAX key

By pushing MAX key, maximum value are measured. The symbol corresponding "MAX" is
displayed. This value is stored and automatically updated as soon as an higher value is
measured by meter. Press MAX key again or rotate the selector to another position to exit
from this function. This feature is disabled for resistance, diode test and continuity test
measurements.

4.2.5 MODE key

By pushing MODE key the selection of a double measured functions which are present at
display is possible. In particular this key is active only in Ω
resistance test, diode test and continuity test.
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key for about 1s it's possible to activate the backlight function on
key again for about 3s to exit from the function or
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HT4010
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