Netronics ASCII -A2 Manuale utente

ASCII

-A2

ASSEMBLY

INSTRUCTIONS

SPECIFICATIONS

Power

Requirements:

+5V

-12V

+5V

6.3

Full

128

character

ASCII

set

key

rollover

Upper

and

lower

case

Selectable

parity

Positive

negative

logic

output

Shift

lock

key

G-10

glass

expoxy

printed

circuit

board

Connects

any

8-bit

parallel

I/O

port

Alpha

lock

jumper

(permits

upper

case

only

operation)

Drive

capability

(one

TTL

load)

NETRONICS

RESEARCH

AND

DEVELOPMENT

LIMITED

~\\

333

LITCHFIELD

ROAD

(RTE.

202)

NEW

MILFORD,

CONNECTICUT

06776

(203)

354-9375

REVISION

(

)

-0015

Disc

Capacitor

ASCII

KEYBOARD

ASSEMBLY

INSTRUCTIONS

Check

all

parts

your

kit

against

the

following

list.

Description

Quantity

KR2376-012

(Decoder

IC)

IN4001

(Diode)

IN4742A

(12V

Zener

Diode)

P.C.

Board

KB-2

150

ohm

Resistor

(Brown,

Green,

Brown)

4.7K

Resistor

(Yellow,

Violet,

Red)

680K

Resistor

(Blue,

Gray,

Yellow)

100K

Resistor

(Brown,

Black,

Orange)

56,

68pf

Disc

Capacitor

LOOMFD/16V

Capacitor

Socket

Momentary

Switches

Latching

Switch

Space

Bar

Return

Key

Miscellaneous

Key

Caps

(as

per

drawing)

Cable

Assembly

lead

ribbon

cable

with

two

pin.

connectors

supplied

with

terminal

package.

BPE

HOE

NORE

EEE

OEE

3°14"

ribbon

cable

with

two

connectors

supplied

with

stand

alone

ASCII

keyboard.

32x3/8"

Screw

Nut

Optional

Price

Deluxe

Steel

Cabinet

(blue

black)$19.95

$2.50

P&H

(Refer

Keyboard

Assembly

Figure)

NOT

INSTALL

UNTIL

POWER

CHECK

HAS

BEEN

MADE

Install

socket

location

U-l.

(Solder).

Install

key

switches.

Note:

Solder

one

lug

only.

The

second

lug

will

soldered

after

the

key

caps

have

been

installed

and

straightened.

The

shift

lock

key

the

latching

type

Switch

and

should

installed

first.

Note

that

two

momentary

Switches

are

used

for

the

space

bar.

Install

key

caps.

Check

alignment

keys

and

straighten

keys

heating

solder

connection

and

repositioning

switches.

Carefully

check

space

bar

action.

(

Solder

remaining

unsoldered

switch

lugs.

Install

resistor

R-1

150

ohm

(brown,

green,

brown).

Solder.

Install

resistor

R-2,3,

4.7K

(yellow,

violet,

red).

Solder.

Install

resistor

R-4

680K

(blue,

gray,

yellow).

Solder.

Install

resistor

R-5

100K

(brown,

black,

yellow).

Solder.

)10.

Install

diode

CR1,

CR2

(IN4001).

NOTE:

Band

must

face

per

assembly

drawing.

)ll.

Install

diode

CR3

(IN4742A).

NOTE:

Band

must

face

per

assembly

drawing.

)1l2.

Install

C-2

.0015disc

capacitor.

Solder.

)13.

Install

C-4

56pf,

68pf

disc

capacitor.

Solder.

)14.

Install

C-1,3

100uf

capacitors.

Note

polarity.

Solder.

)

JUMPER

SELECTION

you

are

using

the

ASCII

keyboard

with

your

ELF

Explorer

85,

connect

jumpers

follows.

you

are

using

different

computer,

check

the

jumper

table

and

connect

per

your

requirements.

Connect

J2,

J4.

Solder.

Note

parity

signals

are

used

ELF

II.

Explorer.

JUMPER

TABLE

LOGIC

|J3

UPPER

LOWER

CASE|

ODD

PARITY

LOGIC

|J4

UPPER

CASE ONLY

EVEN

PARITY

Solder

ribbon

cable

assembly

location

per

assembly

drawing.

Note

must

positioned

shown.

socket

could

used

desired).

| ,

The

Netronics

ASCII

keyboard

can

used

with

any

number

computer

applications.

When

using

this

product

with

Netronics

computer

the

following

modifications

should

made

the

computer

facilitate

convenient

installation.

When

using

the

ASCII

keyboard

ASCII

with

Netronics

Video

Display

Board

make

the

following

modifications

your

Video

Display

Board.

Using

gauge

insulated

jumper

wire

connect

the

Jumper

between

and

U-4

Connect

insulated

jumper

between

and

U-4

16.

Connect

the

jumper

between

and

the

-12V

terminal

the

edge

the

Video

Display

P.C.

Board.

Referring

the

interconnection

diagram

page

your

Video

Display

Board

manual

please

note

that

the

-12

and

the

ground

connections

between

the

Video

Display

Board

and

the

ASCII

keyboard

longer

required.

These

connections

are

now

made

via

the

ribbon

cable.

When

using

the

ASCII

keyboard

with

the

ELF

Giant

Board

make

the

following

modifications

your

Giant

Board.

Remove

the

jumper

diode

from

CR1.

Add

jumper

from

Al6

AS5

24.

Add

jumper

from

Al6

All

Connect

the

ribbon

cable

between

the

Giant

Board

and

ASCII

keyboard.

Connect

supply

(6.3

AC)

input

the

ASCII

keyboard.

Observe

the

ground

polarity

you

are

uSing

the

Netronics

power

supply.

POWER

SUPPLY

TEST

(DO

NOT

INSTALL

U-1

YET)

Check

all

soldering

and

components

for

proper

value.

Connect

the

ASCII

your

system.

Measure

the

voltage

socket

U-1.

The

voltages

should

+5V

-12V

respectively.

They

should

read

within

the

specified

values.

not

proceed

install

the

voltage

improper.

Disconnect

the

power

supply.

install,

I¢G-1.

Note

location

pin.

#1.

WARRANTY

All

the

components

supplied

this

kit

are

under

warranty

for

Six

months

from

the

date

purchase.

Any

parts

suspected

defective

should

returned

Netronics

with

$1.00

for

postage

and

handling.

They

will

tested

and

returned

postpaid.

CASE

DIFFICULTY

the

event

difficulty,

check

all

wiring

against

the

instruc-

tions.

Check

for

solder

bridges

and

all

component

values.

you

still

cannot

determine

the

problem,

return

the

defective

printed

circuit

board

ONLY.

Please

enclose

check

money

order

for

$7.00

and

pack

the

board

securely,

and

insure

the

parcel.

Your

unit will

tested

and

returned

insured

and

postpaid.

Mailing

address:

NETRONICS

RESEARCH

DEVELOPMENT

LIMITED,

333

Litchfield

Road,

Rte.

202,

New

Milford,

Connecticut

06776,

Attention:

Service

Department.

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GBOK

SCHEMATIC,

KEYBOARD

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