Tandy CM-8 User Manual

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Page #16 background image

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Gray scale (color bars) pattern:

10

REM * * * *

Gray

scale (color bars)

pattern

20

WIDTH

80:PALETTE

RGB

****

30

PR

INT"This

program

will

generate

1 6

colored

bars per

screen."

40

PRINT"To

view

the

next

set

of

16

colors,

press

any

key."

50

PRINT"

Press

<ENTER>

to

begin."

60

A$

= 1NKEY$:1F

A$=""

THEN

60

70

ON BRK

GOTO

250

80

HSCREEN 2

90

GOSUB210

1

00

FOR

R = 0

TO

1 5

110

HCOLOR R,

15

120

HLINE(R *

20,0)-((R

+

1)*20,

192),PSET,BF

130

HCOLOR

0,0

140NEXTR

150

FOR N = 0 TO 3

160

GOSUB

210

170

A$=

INKEY$:

1F

A$="

" THEN

170

180

NEXT

N

190

PALETTE RGB

200

END

210

FOR R = 0 TO 1 5

220

PALETTE

R,(N*16)+R

230

NEXT

R

240

RETURN

250

PALETTE RGB :END

1. B + Power Circuit Adjustment

(Instrument

in use: a

20

Kohm/V

tester)

( 1)

Be

sure

that

the

AC

line

voltage

is

above

114V.

(2)

Rotate

the

B +

voltage

adjusting

control

(R703)

to

provide

a DC

voltage

of

115V

between

the

TP701

and

TP702.

Note 1:

If

the

AC

line

voltage

is

below

114V,

the

DC voltage

may

not

increase

to

11

5V,

but

this

is

not

a

problem

related

to

this

ad-

justment.

Note 2:

Clockwise

rotation

of

the

B +

voltage

ad-

justing

control

will

increase

the

B +

pow-

er

supply

voltage

.

2.

Horizontal Hold Adjustment

( 1)

Operate

the

computer

in

such

a

way

that

the

let-

ter

"H"

covers

the

entire screen (data

display

peri-

od

:

44

.

698

µ,S

horizontal,

14.331

mS

vertical)

.

(2)

Adjust

the

horizontal

hold

control

(R607)

until

the

picture

on

the

screen

becomes

still (synchronized).

(3)

Turn

the

power

switch

on

and

off

several

times

to

check

that

the

picture

does

not

fluctuate.

16

3. Vertical Size Adjustment

( 1)

Operate

the

computer

in

such

a

way

that

the

let

-

ter

"H"

covers

the

entire screen (data

display

peri-

od:

44.698

µ,S

horizontal

,

14.331

mS

vertical)

.

(2)

Adjust

the

vertical

size

control

(R

507

) so

that

the

height

of

the

displayed

pattern

is

7.48

inches (

190

mm).

4.

Focusing

( 1)

Operate

the

computer

to

display

the

alphabetical

characters

on

the

screen.

(2)

Set

the

brightness

control

at

the

center

position.

(3)

Rotate

the

focus

control

(part

of

T602)

for

the

best

focus.

(4)

Change

the

position

of

the

brightness

control

to

confirm

that

the

picture

remains

focused.

Questions and Answers:

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Tandy CM-8 Specifications

General

Brand	Tandy
Model	CM-8
Category	Monitor
Language	English

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