PeakTech 3415 USB DMM, Руководство по эксплуатации

Страница: 46 / 56

6.2. Measuring DC/AC Current
WARNINGS!
* Do not apply voltage directly across the terminals. You must
connect the meter in series with the circuit.
* The 10 A terminal is fused. A severe fire hazard and short
circuit danger exists if you apply a voltage with high-current
capability to this terminal. The meter can be destroyed under
such conditions.
To measure current, break the circuit and connect the probes to two
circuit connection points. Never connect the probes across a voltage
source in parallel. Doing so can blow the fuse or damage the circuit
under test.
Note: The maximum input current is 600 mA or 10 A depending on
the terminal used. In these ranges excessive current blows the fuses,
which you must replace.
1. Set the rotary selector to the µA/mA range. If you do not
know the current level, set it to the highest position and
reduce the setting as needed to get a reading.
2. Press SELECT to select between DC and AC.
3. Plug the black test lead into your meter’s COM terminal and the
red test lead into your meter’s µA/mA or 10 A terminal.
4. Remove power from the circuit under test and then break
the circuit at the appropriate point.
5. Connect the test leads in series with the circuit.
6. Apply power and read the current. Your meter displays the
current value.
Note: If you see the meter for DC current, “-” appears or disappears.
This indicates the polarity of the measured current.
-45-