User Manual

HT100
EN - 7
4.2 DESCRIPTION OF FUNCTION KEYS
4.2.1
/HOLD key
The multifunction
/HOLD key allows the herefollowed operations:
 A simply pressure allows to switch on the instrument. After switch on, a quick autotest
relative to the battery level charging is performed. For a percentage value <10%
replace the batteries (see § 5.2)
 With instrument switched on, the key allows to activate/deactivate the HOLD feature in
way to fix the result of the measured value at display. The “HOLD” symbol is shown.
This feature is not active without any input signals
 Pressing and hold (more than 3s) this key to switch off the instrument
CAUTION
 After switch on the instrument is set in OHM mode and the k and
symbols are displayed
 The instrument changes to VAC/VDC measurement with the herewith
voltage values on inputs:
1.3 ÷ 1000VAC or 2.2 ÷ 1000VDC, -0.7 ÷ -1000VDC
 The instrument changes to
 measurement with the herewith voltage
values on inputs:
VAC< 1.0V, -0.5V  VDC< 2mV
 The instrument change to A AC with the herewith current values:
1.5 < A <200A
CAUTION:
The function priority is the above stated one (VAC/DC,  then AAC)
consequently to measure current is NECESSARY to disconnect both test
leads from the instrument
4.2.2 Backlight
key
Press the
key for the backlight activation/deactivation. This light could help the operator
reading the display while he’s measuring in dark sites.
4.2.3 Disabling the Auto Power OFF function
In order to preserve internal batteries, the instrument switches automatically off
approximately 20 minutes after it was last used. The symbol “APO” appears on the display
when this function is active. When the instrument must be used for long periods of time, it
may be useful to deactivate the Auto Power Off function as follows:
 Switch off the instrument with the
/HOLD key
 Switch on the instrument by press and hold the
/HOLD key for at least 3s until note
three times the “APO” symbol flashing at display. The “APO” symbol then is not more
shown at display
 Switch off and on the instrument to automatically enable the feature