HT instruments HT4010 - Manual (Page 31)

HT4010
EN - 10
4.3.2 AC Voltage measurement
CAUTION
Maximum input for AC Voltage measurements is 600VDC or 600VACrms.
Do not take any voltage measurement exceeding this limit in order not to
risk electrical shock or damaging the meter.
Fig. 3: Taking AC voltage measurement
1. Approach the meter closest to AC source and note the turn on of red LED which is
placed to the bottom of clamp jaws (see Fig. 1) which detect the AC voltage
2. Rotate the switch on V position. The “AC” symbol is shown at display
3. Pressing the RANGE key to select the correct range or using the Autorange feature
(see paragraph 4.2.3). If the voltage value under test is unknown, select the highest
range
4. Insert the red test lead plug into V Ω jack and the black test lead plug into COM
jack (see Fig. 3)
5. Connect the two long ends of test leads to the desired circuit (see Fig. 3) then reading
will be displayed
6. “OL” message is shown at display if the AC voltage under test is over the maximum
value that the instrument is able to measure
7. For HOLD and MAX functions please refer to paragraph 4.2