Operating Instruction; Measuring Voltage; Measuring Current - Mastech MY-60 Operator's Manual

2.1 FUNCTION AND RANGE SELECTOR
There are different functions and 32 ranges provided. A rotary switch is used to
select functions as well as ranges.
2.2 POWER SWITCH
A push-push switch is used to turn the meter on or off.
To extend the battery life, Auto Power- Off function is provided (Optional). The
meter will be turned off automatically within around 40 minutes. To turn on the meter
again, push the power switch to release it and then push it once more.
2.3 INPUT JACKS
This meter has four input jacks that are protected against overload to the limits
shown. During use connect the black test lead to COM jack connect red test lead
depending on the function selected.
FUNCTION
200mV
V & V~
Hz
Ω
mA & mA~
20A & 20A~
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3. OPERATING INSTRUCTION

3.1 MEASURING VOL TAGE
1.Connect the black lead to the COM jack and the red test lest lead to the VΩ Hz
jack.
2. Set the rotary switch at the desired V
leads across the source or load under measurement.
The polarity of the red lead connection will be indicated along voltage value when
making DC voltage measurement.
3. When only the figure"1" is displayed, it indicates overrange situation and the
higher range have to be selected.

3.2 MEASURING CURRENT

1. Connect the black lead to the COM jack and the test lead to the mA jack for a
maximum of 200mA current. For a maximum of 20A, move the red lead to the A
jack.
2. Set the rotary switch at desired A
in series with the load under measurement.
RED LEAD CONNECTION
V Ω Hz
V Ω Hz
V Ω Hz
V Ω Hz
V Ω Hz
mA
A
INPUT LIMITS
250V dc or rms ac
1000V dc, 700V ac (sine)
250V dc or rms ac
250V dc or rms ac
250V dc or rms ac
200mA dc or rms ac
10Adc or rms ac continuous
20A for15seconds maximum
or V~ range position and connect test
or A~ range position and connect test leads
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