Operation Instructions; Function Switching; Range Switching; Maximum Value Measurement - Mastech MS8235 Operation Manual

4. Operating Instructions

4.1 Function Switching

1) Press the "FUNC" key to switch between AC and DC
measurement at the current ranges.
2) Press the "FUNC" key to switch between the diode and
continuity ranges.

4.2 Range Switching

1) When the meter is turned on, it is at the auto range for
measuring current, voltage and resistance.
2) Press the "RANGE" key to enter the manual range
mode. The range will go one level up with each press
and return to the lowest level when the highest level
is reached.
3) Hold the "RANGE" key for more than 2 seconds to
return to the auto range.

4.3 Maximum Value Measurement

1) The maximum value measurement function can be
used when the meter is measuring current and voltage.
2) To display the measured maximum value during
measurement, press the "MAX" key, and the
measured maximum value will appear on the LCD.
3) Press the "MAX" key again to release the maximum
value measurement function.

4.4 Reading Holding

1) To hold the reading during measurement, press the
"HOLD" key, and the displayed value on the LCD
will be locked.
2) Press the "HOLD" key again to release the reading
holding mode.
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4.5 Backlight Source

1) If the environment is too dark for reading during
measurement, hold on to the "
2 seconds to turn on the backlight source.
2) Hold on to the " " key again for more than
2 seconds to turn off the backlight source.
3) After the backlight source is turned on, if the "
key is not held down for more than 2 seconds, the
backlight source will shut down automatically 15
seconds later.

4.6 Use Of The Test Key

1) Press "TEST" to start detection when the meter is at
the Phone (phone line mode detection), Tone
(judgment and tracking of cable line), Net Cable
(network cable integrity detection) range.
2) After the detection, the detection result indicator will
flash. Press the "TEST" key to stop flashing and get
ready for the next detection.

4.7 Preparation For Measurement

1) Turn the range selector and turn on the power. If the
battery voltage is low (about ≤7.2V), the LCD will
display the " " symbol, when the batteries must
be replaced.
2) The " " symbol beside the input line indicates that
the input voltage or current should not exceed the
indicated value. This is intended to protect the
internal circuit from damage.
3) Set the range selector to the desired measurement
function and range. In the manual range mode, if the
scale of the measured value is unknown beforehand,
the highest range should be set.
" key for more than
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"