Description Of Function Keys; A Hold Key; Range Key; Max Min/Peak Key - HT Instruments HT63 Manuel D'utilisation

4.2.

DESCRIPTION OF FUNCTION KEYS

4.2.1. A HOLD key

Pressing the A HOLD key freezes the value of the measured quantity on the display. After
pressing this key, the message
to exit the function.
Press and hold the A HOLD key for a long time in order to activate/deactivate the
AutoHOLD function. The message
" "
enabled, the instrument freezes the value of the quantity on the display, automatically
updating it when a new stable value is detected; a buzzer sounds when this happens. This
function is useful in case of input signals with quick oscillations.

4.2.2. RANGE key

Press the RANGE key to activate the manual mode and to disable the Autorange function.
The symbol AUTO
"
press the RANGE key to change measuring range: the relevant decimal point will change
its position. The RANGE key is not active in positions
4-20mA%. In Autorange mode, the instrument selects the most appropriate ratio for
carrying out measurement. If a reading is higher than the maximum measurable value, the
indication O.L appears on the display. Press and hold the RANGE key for more than 1
" "
second to exit the manual mode and restore the Autorange mode.

4.2.3. MAX MIN/PEAK key

Pressing the MAX MIN/PEAK key once activates the detection of maximum (MAX),
minimum (MIN) and average (AVG) value of the quantity being measured. The values are
constantly updated and are displayed cyclically every time the same key is pressed. The
MAX MIN/PEAK key is not active when the HOLD function is activated. The MAX
MIN/PEAK key is not active in positions
Press and hold the MAX MIN/PEAK key for more than 1 second or turn the selector to exit
the function.
Press and hold the MAX MIN/PEAK key for more than two seconds to activate the
detection of Maximum and Minimum peak values o AC Voltage and Current with a
response time of 1ms. Both values are constantly updated and are displayed cyclically
every time the same key is pressed again. The display shows the symbol associated with
the selected function:
The Auto Power OFF function is automatically disabled.
Press and hold the MAX MIN/PEAK key for more than 2 seconds or turn the selector to
exit the function.
4.2.4. Hz%/REL key
Press the Hz%/REL key to select frequency measurement and duty cycle test in
positions VHz%, 10AHz%, mA
frequency range is different in the different positions.
Long pressing the Hz%/REL key activates relative measurement. The instrument zeroes
the display and saves the displayed value as a reference value which subsequent
measurements will be referred to. The symbol
not active in positions
Hz%/REL key again to exit the function.
HOLD
"
A HOLD
"
disappears from the upper left part of the display. In manual mode,
"
PMAX for maximum peak value,
" "
(AC), A
, , Hz%, Temp°C°F and 4-20mA% . Press and hold the
appears on the display. Press the HOLD key again
"
appears on the display. With this function
"
, , CAP, Hz%, Temp°C°F and 4-20mA%.
and Hz% of the rotary selector. The

appears on the display. This function is
" "
EN - 7
, CAP, Hz%, Temp°C°F and
,
PMIN for minimum peak value.
" "
HT63