Assembly, Batteries – Elenco 3 1/2 Digit Cap. / Trans. Kit User Manual

Page 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

100

μ

V

+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

200

Ω

0.1

Ω

+1% of rdg + 2dgt

2k

Ω

1

Ω

+0.8% of rdg + 2dgt

20k

Ω

10

Ω

+0.8% of rdg + 2dgt

Approximately

Protected By

200k

Ω

100

Ω

+0.8% of rdg + 2dgt

1.2mA

PTC

2M

Ω

1k

Ω

+0.8% of rdg + 3dgt

20M

Ω

10k

Ω

+2.0% of rdg + 4dgt

Maximum open circuit voltage: 2.8V

DC Current

Range

Resolution

Accuracy

Protection

200

μ

A

100nA

+1.5% of rdg + 2dgt

2mA

1

μ

A

+1.5% of rdg + 2dgt

Protected by

20mA

10

μ

A

+1.5% of rdg + 2dgt

250V/2A Fuse

200mA

100

μ

A

+2% of rdg + 2dgt

20A

10mA

+2.5% of rdg + 3dgt

AC Current

Range

Resolution

Accuracy

Protection

200

μ

A

100nA

+1% of rdg + 3dgt

2mA

1

μ

A

+1% of rdg + 3dgt

Protected by

20mA

10

μ

A

+1% of rdg + 3dgt

250V/2A Fuse

200mA

100

μ

A

+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

2

μ

F

1nF

+2.5% of rdg + 3dgt

20

μ

F

10nF

+2.5% of rdg + 3dgt

200

μ

F

100nF

+5% of rdg + 3dgt

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