HT instruments HT322 - Manual (Page 7)

HT321 - HT322
EN - 6
4.2. DESCRIPTION OF FUNCTION KEYS
4.2.1. HOLD
Key
By pressing HOLD key the measured value is frozen on the display where the symbol
"HOLD" appears. Pressing again HOLD to disable this function and resume normal
operation.
4.2.2. R (RANGE) Key
By pressing R key, the manual mode is activated and the “AUTO” symbol disappears from
the display. Press R cyclically to change the measuring range and fix the decimal point on
the display.
To exit this function keep R key pressed for at least 1 second or rotate the selector to
another position.
4.2.3. MAX
Key
By pressing 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.
4.2.4. SEL
Key
By pressing SEL key the selection of a double measured functions which are present at
display is possible. In particular this key is active only in
/ position to select between
diode test and continuity test or in °C°F position (only HT322) position to select between
°C and °F temperature measure.
4.2.5. Backlight key (only HT322)
By pressing and hold
key for about 3s it’s possible to activate the backlight function on
the display. By pressing and hold key again for about 3s to exit from the function or
waiting the automatically disable after some seconds. The function is available on each
position of the rotary selector.
4.2.6. Auto Power OFF
The instrument automatically turns off 15 minutes after last pressure of keys or last
selector rotation. To resume operation turn the selector on OFF and turn on the instrument
again.