Direct Current Measurement - Mastech MAS830L Instruction Manual

1. If you do not know the measured voltage range in advance,
set the function/range switch to the maximum range, and
then gradually turn to smaller ranges until satisfactory
resolution.
If the display shows "1", this indicates an overrange
2.
measurement, and the switch should be set to a higher
range.
3. Do not input a voltage of more than 600V, it is capable of
indicating a higher voltage, but with the risk of damaging the
inside circuit.
4. When taking the measurement of high voltage, pay special
attention to avoid an electric shock.

Direct current measurement

Place the black probe into the "COM" jack. For the
1.
current to be measured not exceeding 220mA, put the
red one into the "V..mA" jack. For current to be
measured between 220mA and 10A, insert the red
probe into 10A jack.
2. Set the function/range switch to the desired A~ range,
3. and connect the probe in series with the load to be
measured. The current value and the polarity connected
4. to the red probe will be shown on the display.
If you do not know the measured voltage range in advance,
1.
set the function/range switch to the maximum range, and
then gradually turn to smaller ranges until satisfactory
resolution.
If the display shows "1", this indicates an overrange
2.
measurement, and the switch should be set to a higher
range.
The symbol " " beside the probe indicates the
3.
maximum input current is 200mA or 10A, depending on
the inserted jack. Overcurrent will blow the fuse.
Notice
Notice
8