HT instruments HT712 - Manual (Page 8)

HT712
EN - 7
4.4. MEASUREMENTS - DESCRIPTION
4.4.1. DC voltage measurement
CAUTION
The maximum input for DC voltage is 600V. Don’t try to measure higher
voltages to avoid risks of electrical shocks or serious damages to the
instrument.
Fig. 3: DC voltage
measurement
1. Turn the selector on .
2. Insert the black test lead in the COM jack and the red
probe in the V+/Ω jack (Fig. 3).
3. Connect the red probe and the black test lead
respectively to the positive and negative poles of the
circuit under test; the voltage value will be displayed
(automatic range detection).
4. Should you get the message "
O.L
" it means that the
detected voltage exceeds the limits which the
instrument can measure. In this case stop the
measurement by disconnecting the test leads from the
circuit under test to avoid risks for yourself and for the
instrument.
5. Should you get a symbol "-" it means that the detected
voltage has an opposite direction compared to the
connection shown in Fig. 3.
6. If you want to activate the HOLD function refer to
chapter 4.2.