Elenco Digital / Analog Trainer Kit Version User Manual

Page 44

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RESISTANCE ANALYSIS OF DIGITAL SECTION

Place the top panel onto the unit. Static testing of the digital section circuits. Do not plug the power supply into
a 117 volt power source until all of the resistance readings check out.

The values given below are

approximate.

From

To

Switch Position

Ohms

Resistance Measured

SW1

GND

In down position

less than 1

Ω

SW2

GND

In down position

less than 1

Ω

SW3

GND

In down position

less than 1

Ω

SW4

GND

In down position

less than 1

Ω

SW5

GND

In down position

less than 1

Ω

SW6

GND

In down position

less than 1

Ω

SW7

GND

In down position

less than 1

Ω

SW8

GND

In down position

less than 1

Ω

SW1

GND

In up position

greater than 3k

Ω

SW2

GND

In up position

greater than 3k

Ω

SW3

GND

In up position

greater than 3k

Ω

SW4

GND

In up position

greater than 3k

Ω

SW5

GND

In up position

greater than 3k

Ω

SW6

GND

In up position

greater than 3k

Ω

SW7

GND

In up position

greater than 3k

Ω

SW8

GND

In up position

greater than 3k

Ω

SW1

+5V

In up position

less than 300

Ω

SW2

+5V

In up position

less than 300

Ω

SW3

+5V

In up position

less than 300

Ω

SW4

+5V

In up position

less than 300

Ω

SW5

+5V

In up position

less than 300

Ω

SW6

+5V

In up position

less than 300

Ω

SW7

+5V

In up position

less than 300

Ω

SW8

+5V

In up position

less than 300

Ω

LOGIC SW

DATA SWITCHES

X X

Y Y

SW1

SW2 SW3

SW4 SW5

SW6 SW7

SW8

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