Elenco 3 1/2 Digit Cap. / Trans. Kit Manual do Utilizador descarregar pdf (Página 7)

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ASSEMBLY

The meter kit has been divided into a number of

sections to make the assembly easy and avoid

major problems with the meter operation.

ONLY OPEN COMPONENT BAGS THAT ARE

CALLED FOR IN YOUR ASSEMBLY PROCEDURE.

DO NOT OPEN ANY OTHER BAGS.

Do not build more than one section of your meter at

a time. Your instructor must approve the proper

operation of the section you have built before you

proceed to the next section. This procedure will

minimize the problems you may have at the

completion of the project.

Your kit program is divided into Sections “A – F”. The

small parts bags will be marked accordingly. The

sections are listed below.

Section A - Meter Display Circuit Assembly.

Section B - DC Voltage and Current Circuit

Assembly.

Section C - AC Voltage and Current Circuit

Assembly.

Section D - Resistance & Buzzer Circuit Assembly.

Section E - Capacitance and Transistor Circuit

Assembly.

Section F - Final Assembly.

IMPORTANT CONSTRUCTION NOTES

1. Wash your hands with soap and water before you

assemble this kit. The high impedance areas on

the circuit board can be contaminated by salt and

oil from your skin. If these areas become

contaminated, your completed multimeter may

not meet the listed specifications. Handle the

circuit board only by its edges.

2. Avoid any excessive accumulation of resin build-

up whenever you solder a connection.

3. Take your time assembling the circuit board.

Work at a slow pace. Remember that accuracy is

far more important than speed.

4. When you perform the steps in assembly, identify

each respective component before you install it.

Then position it over its outline on the top legend

side of the PC board, unless otherwise indicated.

5. Check for the proper polarity of ICs, diodes,

electrolytic capacitors, battery snap and LCD.

BATTERIES

• Do not short circuit the battery terminals.

• Never throw battery in a fire or attempt to open its

outer casing.

• Use only 9V type, alkaline or carbon zinc battery

(not included).

• Insert battery with correct polarity.

• Non-rechargeable batteries should not be

recharged. Rechargeable batteries should only be

charged under adult supervision, and should not

be recharged while in the product.

• Remove battery when it is used up.

• Batteries are harmful if swallowed, so keep away

from small children.

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AC Voltage

Range Resolution Accuracy Maximum Input

200mV 100μV+

1.5% of rdg + 2dgt

2V 1mV +

1% of rdg + 2dgt

20V 10mV +

1% of rdg + 2dgt AC 750V maximum 50Hz - 400Hz

200V 100mV +

1% of rdg + 2dgt

750V 1V +

1.5% of rdg + 2dgt

Resistance

Range Resolution Accuracy Test Current Input Protection

200Ω 0.1Ω +

1% of rdg + 2dgt

2kΩ 1Ω +

0.8% of rdg + 2dgt

20kΩ 10Ω +

0.8% of rdg + 2dgt Approximately Protected By

200kΩ 100Ω +

0.8% of rdg + 2dgt 1.2mA PTC

2MΩ 1kΩ +

0.8% of rdg + 3dgt

20MΩ 10kΩ +

2.0% of rdg + 4dgt

Maximum open circuit voltage: 2.8V

DC Current

Range Resolution Accuracy Protection

200μA 100nA +

1.5% of rdg + 2dgt

2mA 1μA+

1.5% of rdg + 2dgt Protected by

20mA 10μA+

1.5% of rdg + 2dgt 250V/2A Fuse

200mA 100μA+

2% of rdg + 2dgt

20A 10mA +

2.5% of rdg + 3dgt

AC Current

Range Resolution Accuracy Protection

200μA 100nA +

1% of rdg + 3dgt

2mA 1μA+

1% of rdg + 3dgt Protected by

20mA 10μA+

1% of rdg + 3dgt 250V/2A Fuse

200mA 100μA+

1.5% of rdg + 3dgt

20A 10mA +

2.0% of rdg + 3dgt

Capacitance

Range Resolution Accuracy Protection

2nF 1pF +

2.5% of rdg + 3dgt

2nF 10pF +

2.5% of rdg + 3dgt

200nF 100pF +

2.5% of rdg + 3dgt Test frequency 400Hz

2μF 1nF +

2.5% of rdg + 3dgt

20μF 10nF +

2.5% of rdg + 3dgt

200μF 100nF +

5% of rdg + 3dgt

1 2 3 4 5 6 7 8 9 10 11 12 ... 35 36

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Elenco 3 1/2 Digit Cap. / Trans. Kit Manual do Utilizador Página 7

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