Mastech MY64 OPERATOR’S MANUAL

Loading ...

2.1

2.2

2.3

FUNCTION AND RANGE SELECTOR

There are different functions and 32 ranges provided. A rotary switch is used to

select functions as well as ranges.

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.

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.

-7-

FUNCTION RED LEAD CONNECTION INPUT LIMITS

200mV

V & V~

Hz

Ω

mA & mA~

20A & 20A~

V

Ω

Hz

V

Ω

Hz

V

Ω

Hz

V

Ω

Hz

V

Ω

Hz

mA

A

250V dc or rms ac

1000V dc, 700V ac (sine)

250V dc or rms ac

200mA dc or rms ac

10Adc or rms ac continuous

20A for15seconds maximum

-8-

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 V

Ω

Hz

jack.

2. Set the rotary switch at the desired V or V~ range position and connect test

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 or A~ range position and connect test leads

in series with the load under measurement.

-9-

Loading ...

Mastech MY64 Digital Multimeter

OPERATOR’S MANUAL - Page 12