HT instruments HT7052 - Manual (Page 10)

HT7052
EN - 8
5 INITIAL OPERATIONS
5.1 SWITCHING ON THE INSTRUMENT
5.1.1 Mains powered instrument operation
CAUTION
 If you connect instrument to the mains supply when instrument is turned
OFF, internal charger will begin to charge the batteries but instrument will
remain turned OFF. In button left angle of LCD, flashing battery indicator
will appear to indicate that the batteries are charging
 If batteries are defective or missing and the instrument is connected
to the mains, the instrument do not switch on
 If batteries are defective or missing, the charger will not work. In
button left corner of LCD screen only plug character will be appeared
 If the instrument is connected to the mains supply when the instrument is
turn ON, the instrument will automatically switch from the battery supply to
the main supply. In button left corner of the LCD screen, the plug character
will appear
 If instrument is not in measuring mode*, the internal charger will begin to
charge the batteries. In button left corner of LCD screen battery indicator
will start to flash, indicating that the batteries are charging
 It is recommended to DO NOT connect or disconnect the instrument to
mains supply while the instrument is in measuring mode
5.1.2 Backlight operation
Instrument supplied by the batteries
After turning the instrument ON the LCD backlight is automatically turned ON. It can be
turned OFF and ON by simply clicking the LIGHT key
Instrument supplied by the mains
After turning the instrument ON the LCD backlight is automatically turned OFF. It can be
turned OFF and ON by simply clicking the LIGHT key
Auto power OFF
The instrument can be switched OFF only by pressing the ON/OFF key. The auto-off
function is not available to allow long-term measurements to be performed
5.1.3 Autocalibration
The instrument is switched ON by pressing the ON/OFF key. After turning on, the
instrument will perform the autocalibration (see Fig. 3). Measuring test leads should be
disconnected during autocalibration. If not, the autocalibration procedure could be false
and instrument will require disconnection of the test leads and repeat switching OFF and
ON
Fig. 2: Spash screen Fig. 3: Autocalibration Fig. 4: Main menu
After finishing the autocalibration, the main menu (see Fig. 4) will appear and instrument
is ready for normal operation