UNI-T UT56 Manual de usuario descargar pdf (Pagina 2)

P/N:110401104338X

Range Remark Measuring Condition

hFE

Can Measure NPN

and PNP type

Transistor, Display

ranges: 0-1000 β

Basic polarity current

about 10μA,Vce

about 3.0V

Making Measurements

Caution:

1 On/Off Switch

3 Liquid Crystal Display

5 Rotary switch

7 Input jack

2 Capacitance jack

4 Date Hold Switch

6 Transistor jack

(1) If there is no display or is shown on the

LCD when the Meter is switched on, replace

the battery as soon as possible.

(2) Never exceed the maximum input voltage or

current limits shown besides the input jacks

, otherwise the Meter will be damaged

and this is dangerous to life.

(3) Turn the rotary switch to proper range before

operating.

" "

Measuring DC Voltage

1. Connect the black test lead to COM jack and

red test lead to" V

2. Set the rotary switch to V .

3. Connect the test leads across with the object

to be measured. LCD appears the measured

value and also the polarity of the red test leads.

Caution

1) If magnitude of the voltage is unknown, always

start with the highest range and reduce until

satisfactory reading is obtained.

2) If

1 is shown on the LCD, which means the

Meter is overloaded, then set to a higher

measurement range.

means never exceed the maximum input

limit 1000V, otherwise internal circuit of the

Meter will be damaged.

4) Take extra care of to avoid electric shock when

measuring high voltage.

Measuring AC Voltage

1. Connect the black test lead to COM jack

and red test lead to jack.

2. Set the rotary switch to " ~"

3. Connect the test leads across with the object

to be measured.

Caution

1) Refer to DC Voltage Caution 1, 2, 4.

means never exceed the maximum input

limit 750V, otherwise internal circuit of the

Meter will be damaged.

" "

" jack.

" "

Measuring DC Current

1. Connect the black test lead to COM jack .

When measuring below 200mA, connect the

red test lead to mA jack. When measuring

20A or below, connect the red test lead to

2. Set the rotary switch to A

3. Connect the test leads in series with the object

to be measured, the LCD display the measuring

value and polarity of red test lead.

" "

jack.

" 20A"

" " .

Measuring AC Current

1. Connect the black test lead to " " jack.

When measuring below 200mA, connect the

red test lead to

20A or below, connect the red test lead to

20A jack.

2. Set the rotary switch to" A~

3. Connect the test leads in series with the object

to be measured.

1) Please refer to DC Current Caution 1, 2, 3.

Caution

satisfactory reading is obtained.

2) If 1 is shown on the LCD, which means the

Meter is overloaded, then set to a higher

measurement range.

means the maximum input current is 200

mA, overload will cause the burn of fuse. 20A

range does not have fuse protection

" "

"mA" jack. When measuring

" "

" .

" "

COM

Measuring Resistance

Before measuring capacitance, remember it takes

time for zeroing when changing ranges. Floating

reading do not effect accuracy.

Caution

1) If 1 is shown on the LCD, which means the

Meter is overloaded, then set a higher measuring

range. If resistance is above 1M

Ω, the reading

will only be steady after few seconds which is

normal for measuring high value of resistance.

2) 1 is displayed when no input(e.g. open circuit).

3) Make sure all objects, circuit and components

to be measured are without voltage and

discharge all high-voltage capacitors.

4) At 200M

Ω range, test lead is short circuit, it has

1000 digits which need to be subtracted from

the reading when making measurement. For

example, when measuring 100M

Ω, it displays

110.00, 1000 digits need to be deducted (means

110.00-10.00=100.00M

Ω).

1. Connect the black test lead to COM jack and

red test lead

Ω jack.

2. Set rotary switch to

Ω .

3. Connect the test leads across with the object

to be measured.

1) To avoid damage to the Meter or the equip-

ment under testing, disconnect circuit powers

and discharge capacitors before measuring

capacitance.

2) Connect capacitor to the capacitance jack.

Measuring Capacitance

Caution

" "

3) Stabilizing reading takes some time when

measuring high capacitance.

Unit : 1pF=10

-6

μF, 1nF = 10

-3

μF

Measuring Frequency

When measuring above 30Vrms, accuracy could not

be guaranteed and Take extra care since the voltage

are becoming very dangerous at this moment.

Caution

Measuring Diode and Continuity beeper

1. Set the black test lead to COM jack and red

test lead to V

Ω jack (Red test lead polarity is

"+" ), Set the rotary switch to .

2. Connect the test lead across with the object

being measured.The reading is the approximate

value of forward voltage drop for the diode.

1. Connect red test lead to Hz jack and black

test lead to COM jack.

2. Set the rotary switch to kHz .

3. Connect the test leads across with the object being

measured. LCD appears the frequency value.

" "

Auto-Power Off function

1. Meter equips with auto-power off function. It will

be in a sleep condition when it has worked for 30

minutes. Power will be automatically cut off.

2. Press the on/off switch two times to power

up again.

Maintenance

The Meter is a highly precise electrical testing

instrument, do not attempt to change the circuit

of your Meter on your own. Take a note of the

following few points.

1. Do not connect to DC Voltage above 1000V

or AC RMS above 750V.

2. Do not input voltage when the rotary switch

is in

Ω .

3. Do not operate the Meter if battery is not inside

or bottom cabinet is not securely screwed.

4. Disconnect the test leads and power off the

Meter before replacing the Battery and Fuses.

"Current Range"

2. Identify NPN or PNP type, connect objects to

the correspondent transistor jack.

3. LCD appears the hFE nearest value.

4. Measuring condition: Ib 10

μA, Vce 3.0V.

Using Holster

Three different ways to use holster:

1. Set holster parallel on the table, do not open

the tilt stand (see diagram 1)

2. Set holster in a small angle on the table, tilt

it up by the first part of tilt stand (see diagram 2)

3. Set holster in a large angle on the table, tilt it

up by all two parts of tilt stand (see diagram 3).

figure1 figure2 figure3

Using Strap

1. Put the front end of the strap through the round

metal of the Meter, see part 1 of the below

diagram.

2. Put the bottom end of the strap through the front

part and tide it up, see part 2 of the below diagram.

Transistor hFE test

3. Connect the test lead to two ends of the object

being measured, the beeper sounds if the resistant

value between the two ends is below 50

Ω .

Measuring Transistor hFE

1. Set rotary switch to hFE .

Caution

1) If magnitude of the current is unknown, always

start with the highest range and reduce until

1 2

Comentarios a estos manuales

Sin comentarios

UNI-T UT56 Manual de usuario Pagina 2

Comentarios a estos manuales

Relacionado con productos y manuales para Multímetros UNI-T UT56