Mastech MS2115A User Manual

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4.2 Manual Measuring Range
RANGE key is automatic/manual measuring range key
to trigger mode. The preset one is automatic measuring
range. Press to switch to manual measuring range.
In the manual measuring range mode, click once to
change to upper range. Continue to the top range, then
continue to press this key to change to the bottom
range, followed by recycling. If this key is pressed more
than 2 sec, it will switch back to automatic measuring
range state.
In capacitance and frequency measurement state, rhw
manual measuring range button is invalid.
Note:
4.3 Frequency/Duty Ratio Switch
1) When the meter is in AC voltage mode, if “Hz/%”
button is pressed, the meter will measure Hz, and
measure AC voltage, AC current signal frequency.
Click “Hz/%” button again, the meter will measure
DUTY cycle, and measure voltage and current signal
duty ratio. If it is in HZ/DUTY position, pressing HZ %
key will switch between HZ and DUTY by recycling.
2) If “Hz/%” button is pressed again, the meter will
revert to voltage, current measurement state.
Note:
The meter is in the maximum/minimum value
measurement state, it can't switch to frequency, duty
ratio measurement mode.
4.4 Maximum/Minimum Measurement Choice
1) Press “MAX/MIN” key to enter MAX mode, and
always keep measurement maximum value; press
“MAX/MIN” key again, the meter will enter minimum
value measurement state; press “MAX/MIN” key for
the third time, the meter will display the difference of
maximum and minimum value; press “MAX/MIN” key
to repeat the above operations by recycling.
2) After entering MAX or MIN mode, it will automatically
save the measured maximum or minimum value.
3) After entering MAX or MIN mode, it will automatically
save the measured maximum or minimum value.
4) If the user presses “MAX/MIN” key more than 2 sec,
the meter will restore normal measuring range.
Note:
1) When the meter is in the maximum/minimum value
measurement state, it is in manual measuring range
mode.
2) When the meter is in the frequency, duty ratio
measurement state, it can't switch to
maximum/minimum value measurement mode.
1) In the resistance mode, press "FUNC" button, it will
switch among resistance, diode and continuity
detection by recycling.
2) In the voltage and current mode, press "FUNC"
button to switch between AC and DC.
4.5 Function Switch

Mastech MS2115A Specifications

General

Brand	Mastech
Model	MS2115A
Category	Measuring Instruments
Language	English