Tandy CM-8 User Manual

10. Static (Center) Convergence
(Figs.
13-16)
1. Switch the display monitor ON and allow it to
warm up for 1 5 minutes.
2. Operate the computer in such a way that the en-
tire screen is a crosshatch pattern (display period :
44 . 698 µS horizontal , 14 . 331 mS vertical) on the
center of the CRT screen. (Fig . 14)
Proceed as follows :
a. Locate the pair of four-pole magnet rings . Ro-
tate the individual rings (change spacing be-
tween tabs) to converge the vertical red and
blue lines. Rotate the pair of rings (maintaining
spacing between tabs) to converge the horizon -
tal red and blue lines. Re fer to Figure 1 5.
b. After completing th e red and blue center conver-
gence, locate the pair of six-pole magnet rings .
Rot ate the individual rings (change spacing be-
tween tabs) to converge the vertical red and
blue (magenta) and green lines. Rotate the pair
of rings (maintaining spacing between tabs) to
conve rge the horizontal red and blue (magenta)
and green lines. Ref er to Figur e 16 .
19
Figure 14. Crosshatch Pattern
t
RED
Figure 15. Static Convergence A
I
BLUE / ~ ~
RED
1
~
-- t---- ·
t
GREEN
Figure 16 . Static Convergence B
Hor i zontal :
9
Lines Min .
Vertical :
13 Lines Min.

Tandy CM-8 Specifications

General

Brand	Tandy
Model	CM-8
Category	Monitor
Language	English