HT instruments HT701 - Manual (Page 13)

HT701
EN - 12
4.4.3. DC Current measurement
CAUTION
The maximum input DC current is 400mA. Do not measure currents
exceeding the limits given in this manual. Exceeding current limits could
result in electrical shocks to the user and damage to the instrument.
Fig. 4: Use of the instrument for DC current measurement
1. Cut off power supply from the circuit to be measured
2. Select the mA
position.
3. If necessary, press the MODE key for manually selecting DC measurement (see §
4.3.3).
4. Use the RANGE key for manually selecting the measuring range (see § 4.2.6) or use
Autorange selection. If current value is unknown, select the highest range.
5. Insert the red cable into the input terminal mA and the black cable into the input
terminal COM.
6. Connect the red lead and the black lead in series to the circuit whose current you want
to measure, respecting polarity and current direction (see Fig. 4)
7. Supply the circuit to be measured. The display shows the value of current.
8. If the display shows the message “OL”, the maximum measurable value has been
reached
9. When symbol “-” appears on the instrument’s display, it means that current has the
opposite direction with respect to the connection of Fig. 4
10. For using the HOLD function, see § 4.2.1, for measuring MAX/MIN/AVG values see §
4.2.2 and for saving the result, see § 4.2.5