Radio Shack LK-1161 Spezifikationen PDF herunterladen (Seite 5)

132

COMPUTE!

Februory,

1981,

Issue

FIGURE

POWER

SUPPLY

FUSE

1----

'T{-C-1--;VDC

117 VAC

T:'

I,II:L---

_-<-

6.3VAC

PARTS

LIST

Transformer

6.3 VAC @

1.2

Radio

Shack

#273-050 $3.49

Transformer

6.3

VAC@300maRadio

Shack

#273-13842.49

Diode

bridge,

lA,

PIV

Radio

Shack

#276-1161 .79

Capacitor,

3300

uf,

35V

Radio

Shack

#272-1021

2.99

The

Netronics kit has a few

bad

features.

One

is the

lack

enough

detail in

documentation.

The

may

be only a personal idiosyncrasy,

but

I strongly

prefer to use a complete set

sockets; Netronics

provides sockets only for the 24-

and

40-pin

IC's.

I wish they

had

provided

RS232 chassis con-

nector --

perhaps

even as

option

so I

wouldn't

have

had

order

one

from

another

company.

The

printed

circuit

board

for

the

Netronics

keyboard

a little flimsy for key

pounding.

mounted

properly

perfectly

OK,

but

the

mounting

instructions

are

included only with the op-

tional case,

not

with the

keyboard

itself.

There

line feed key;

Control

J yields a line

feed.

your

computer

echoes a line feed

when

you

send

it a carrige

return,

you're

okay; otherwise you

have either a

programming

problem

minor

pain

in the neck.

serial video

board

have

seen

Netronics

included -- has high-resolution graphics like a

memory-mapped

video

board.

This

could be pro-

vided with a

RAM

character

generator,

but

it really

isn't

expected at this low price.

The

Netronics 20

current

loop

not

isolated like the Xitex,

and

may

not work well with some devices. It does

not

work well with all

the

devices I have tried, including

KAOS

systems.

Granted

these deficiencies, why

I glad I

bought

the Netronics?

summarize:

Quick

delivery via

800

phone

number

and

credit

card.

Complete

cursor control.

TTY

mode,

with

upper/lower

case eaisly available.

The

full

ASCII

character

set plus

the

Greek

alphabet,

other

characters,

and

some

graphic

sym-

bols.

Shift lock, control key,

and

escape key.

true

delete key (Some delete keys only

back

the

cursor; this one also erases

the

unwanted

character.)

The

board

works directly with

KIM

TTY

monitor

ROM

special software

support.

KIM

now has a video

terminal

which cost less

than

the

KIM.

a complete, working

terminal

FIGURE

I/O

MODIFICATION

S10 L S12,

2PDT

.J,.

SWITCH

SWITCHES

SHOWN

POSITION

with

numbers

(TTY

mode)

and

typewriter

mode,

with

both

upper

and

lower case.

When

you

are

writing

running

programs

in BASIC you will pro-

bably

find the all-caps

mode

most convenient.

you

intend

any

word

processing, you will find that

ability to

change

easily to

upper

lower case

very

helpful.

you

think

you

may

want

change

from

RS232 to 20

loop, install a

SPDT

toggle switch

Sll,

and

DPDT

switch

S12.

One

pole

tog-

gle switch S

should be in series with R 12,

and

the

other

replaces

jumper

S12.

These

switches

permit

you to

change

from

one

system to

the

other

without

changing

jumpers.

(Fig. 1).

For

RS232, set switch

Sll

to position B, close S12,

and

use pins 2

and

for

110.

For

current

loop, set switch

Sll

position A, switch S12

open,

and

use pins 24

and

for

110.

Jumpers

S8, S9,

and

S10

are

installed as

shown.

Other

lines in J1 will

have

connected

your

terminal,

but

different

computers

and

terminals

may

require

different lines.

KIM

has

a 20

cur-

rent

loop 110,

but

the

input

the

terminal

needs

be inverted. Set Switch

Sll

Position B,

and

open

Switch S12.

Wire

KIM

-1

to Netronics J 1-1,

KIM

A-T

to Netronics

Jl-24.

Jumper

KIM

A-S (S acts as

current

source) to

A-V

and

wire

A-V

to Netronics

Jl-25.

(You

can

use

Netronics

J-1

jumpered

Jl-25

as a

current

source; if you do this,

then

not

use

KIM

A-S.)

You

could

make

a simple RS232

adapter

for

KIM

to talk over,

but

that

another

story.

Pins

J 1-1-5, 6, 8, 17,

and

are

handshake

lines for talk-

ing to a

modem,

and

will

not

be used

KIM.

The

power supply shown in Fig. 2

may

not

ideal,

but

it works

and

fits inside

the

keyboard

case.

20MA

OUT

)1-24

-------------1

RS232

OUT

)1-3

-------"VVIr--i

CURRENT

)1-23

+ 5

URCE

-12

--"W\,--+..-y.,~

{

)1-1

)1-7

GND

)1-17

==l

20MA

)1-25

D 0

)1-2

RS232

':"

R52"

)1-20

)1-5

HANDSHAKE

)1-6

LINES

)1-8

SIG

OUT

1 2 3 4 5 6 7 8 9 10 ... 15 16

Kommentare zu diesen Handbüchern

Keine Kommentare

Radio Shack LK-1161 Spezifikationen Seite 5

Kommentare zu diesen Handbüchern