To Next Page

To Previous Page

NOTE: If you manually change the measurement range after

entering the Data Hold modes, the Meter exits this

mode.

exit the manual ranging mode, press and hold down

RANGE

RANGE key for two seconds. The Meter returns to the

autorange mode and AUTO

AUTO

AUTO is displayed.

3.1.3

3.1.3 Battery

Battery

Battery Saver

Saver

The Meter enters the "sleep mode" and blanks the display

if the Meter is on but not used for 30 minutes.

Press the HOLD

HOLD

HOLD key or rotate the rotary switch to wake

the meter up.

disable the Sleep mode, hold down the key

while turning the meter on.

3.2

3.2 Measurement

Measurement

Measurement Functions

Functions

3.2.1

3.2.1 AC

AC and

and

and DC

DC Voltage

Voltage

Voltage measurement

measurement

To avoid

avoid

avoid electrical

electrical

electrical shock

shock

shock and/or

and/or

and/or damage

damage

damage to

to the

the

instrument,

instrument, do

do not

not

not attempt

attempt

attempt to

to take

take

take any

any

any voltage

voltage

measurement

measurement that

that

that might

might

might exceed

exceed

exceed 1000Vdc

1000Vdc

1000Vdc or

750Vac

750Vac rms.

rms.

To avoid

avoid

avoid electrical

electrical

electrical shock

shock

shock and/or

and/or

and/or damage

damage

damage to

to the

the

instrument,

instrument, do

do not

not

not apply

apply

apply more

more than

than

than 1000Vdc

1000Vdc

1000Vdc or

750Vac

750Vac rms

rms

rms between

between

between the

the

the common

common

common terminal

terminal

terminal and

and

the

the earth

earth

earth ground.

ground.

The polarity of ac (alternating current) voltage varies over

time; the polarity of dc (direct current) voltage is constant.

The Meter's DC voltage ranges are 400.0mV, 4.000V,

40.00V, 400.0V and 1000V ； AC voltage ranges are

400.0mV , 4.000V, 40.00V, 400.0V and 750V.

(AC 400.0mV range only exists in manual ranging mode).

measure ac or dc voltage:

1. Set rotary switch to the DCV or ACV range.

2. Connect the black and red test leads to the COM and

V terminals respectively.

3. Connect the test leads to the circuit being measured

4. Read the displayed value. The polarity of red test lead

connection will be indicated when making a DCV

measurement.

NOTE:

¥ Unstable display may occur especially at 400mV range,

even though you do not put test leads into input terminals,

in this case, if an erroneous reading is suspected, short

the V terminal and the COM terminal, and make sure the

zero display.

¥ For better accuracy when measuring the dc offset of an

ac voltage, measure the ac voltage first. Note the ac

voltage range, then manually select a dc voltage range

equal to or higher than the ac range. This improves the

accuracy of the dc measurement by ensuring that the

input protection circuits are not activated.

3.2.2

3.2.2 Resistance

Resistance

Resistance measurement

measurement

To avoid

avoid

avoid electrical

electrical

electrical shock

shock

shock and/or

and/or

and/or damage

damage

damage to

to the

the

instrument,

instrument, disconnect

disconnect

disconnect circuit

circuit

circuit power

power

power and

and

discharge

discharge all

all

all high-voltage

high-voltage

high-voltage capacitors

capacitors

capacitors before

before

measuring

measuring resistance.

resistance.

The unit of resistance is the ohm ( Ω ). The Meter measures

resistance by sending a small current through the circuit.

Because this current flows through all possible paths

between the probes, an in-circuit resistance reading

represents the total resistance of all paths between the

probes.

Brand	Mastech
Model	my68
Category	Multimeter
Language	English

Mastech my68 User Manual

Table of Contents

Questions and Answers:

Mastech my68 Specifications

Related product manuals