Major tech MT1887 Benutzerhandbuch - Seite 6
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DC CURRENT MEASUREMENTS
CAUTION: Do not make 20A current measurements for longer than 30 seconds. Exceeding
30 seconds may cause damage to the meter and/or the test leads.
1.
Insert the black test lead banana plug
2.
For current measurements up to 4000µA
the yellow µA position and insert the red test
µA/mA jack.
3.
For current measurements up to 400mA
the yellow mA position and insert the red test
µA/mA jack.
4.
For current measurements up to 20A
the yellow 10A/HZ/% position and insert the
the 10A jack.
Press the MODE button to indicate "DC" on the display.
5.
6.
Remove power from the circuit under test, then open up the circuit at the point where you
wish to measure current.
7.
Touch the black test probe tip to the negative side of the circuit.
Touch the red test probe tip to the positive side of the circuit.
8.
Apply power to the circuit.
9.
Read the current in the display.
AC CURRENT (FREQUENCY, DUTY CYCLE) MEASUREMENTS
CAUTION: Do not make 20A current measurements for longer than 30 seconds. Exceeding
30 seconds may cause damage to the meter and/or the test leads.
1. Insert the black test lead banana plug into the negative COM jack.
2. For current measurements up to 4000µA
yellow µA position and insert the red test
jack.
3. For current measurements up to 400mA
yellow mA position and insert the red test
jack.
4. For current measurements up to 20A AC,
yellow 10A/HZ/% position and insert the
10A jack.
5. Press the MODE button to indicate "AC" on the display.
6. Remove power from the circuit under test, then open up the circuit at the point where you
wish to measure current.
7. Touch the black test probe tip to the neutral side of the circuit.
Touch the red test probe tip to the "hot" side of the circuit.
8. Apply power to the circuit.
9. Read the current in the display.
Press and hold the MODE button to indicate "Hz".
10.
11.
Read the frequency in the display.
Momentarily press the MODE button again to indicate "%".
12.
13.
Read the % duty cycle in the display.
14.
Press and hold the MODE button to return to current measurement.
into the negative COM jack.
DC, set the function switch to
lead banana plug into the
DC, set the function switch to
lead banana plug into the
DC, set the function switch to
red test lead banana plug into
AC, set the function switch to the
lead banana plug into the µA/mA
AC, set the function switch to the
lead banana plug into the µA/mA
set the function switch to the
red test lead banana plug into the