Wavecom 98, Руководство пользователя

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7
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 into the negative COM jack.
2. For current measurements up to 4000µA DC, set the function switch to the
yellow
µA position and insert the red test lead banana plug into the µA/mA
jack.
3. For current measurements up to 400mA DC, set the function switch to the
yellow
mA position and insert the red test lead banana plug into the µA/mA
jack.
4. For current measurements up to 20A DC, set the function switch to the
yellow
10A/HZ/% position and insert the red test lead banana plug into the
10A jack.
5. Press the MODE
button to indicate “
DC
” 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 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 AC, set the function switch to
the yellow
µA position and insert the red test lead banana plug into the
µA/mA jack.
3. For current measurements up to 400mA AC, set the function switch to
the yellow
mA position and insert the red test lead banana plug into the
µA/mA jack.
4. For current measurements up to 20A AC, set the function switch to the
yellow
10A/HZ/% position and insert the red test lead banana plug into
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. In the 10A AC range, right auxiliary display frequency.
10. Press and hold the MODE
button to indicate “
Hz
”.
11. Read the frequency in the display.
12. Momentarily press the
MODE
button again to indicate “
%
”.
13. Read the % duty cycle in the display.
14. Press and hold the
MODE button to return to current measurement.
15. Press EXIT for 2 seconds into the function of AC+DC. Test DC and AC TRUE Rms.