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DIDS-402-2MI0
Para 2-3.6/2-4
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2-i6Aligrunent of Monoscope Deflection Circuit A3
a.
Adjust brightness control R8 (figure 2-1), on the side of the Display
Terminal, until the character boxes are just visible behind the
characters.
Character brightness can also. be adjusted by means
of BEAM CUR. control A6-R2 on the high-voltage network.
Refer to
Adjustment of BEAM CUR. control A6- R2 (paragraph 2- 3.2) for
proper adjustment.
b.
Adjust character height control RI08 (figure 2-7) until the characters
are approximately 3/16 inch high.
c.
Adjust minor vertical sweep expansion control Rl03 (figu:re >2-7)
so that the character height is 80 percent of the visible character
box height.
d.
Adjust phase control C 11 (figure 2-7) until single characters are
produced (double characters are seen when the phase control is
improperly adjusted).
e.
Pres s the keys to display the characters G
@
at the upper left corner of the display.
Y I V 6 Q H O
f.
If
the letters do not appear, adjust X and Y position control R5 and
R47 (figure 2-7) until the characters
~
and G are visible .
.&.
Adjust
Y
position control R47 (figure 2-7) so that the character
is properly positioned within its frame.
h.
Adjust
Y
gain control R50 (figure 2-7) until the character Y is
properly positioned within its frame.
i.
Repeat steps.& and h above until the characters
and Yare
both properly positioned within their respective frames.
1.
Adjust
X
position control R5 so that the character
G
is properly
positioned within its frame.
k.
Adjust X gain control R32 (figure 2-7) until the character
@
is
properly positioned within its frame.
1.
Repeat steps
i
and k above until the characters G and
@
are
both properly positioned within their respective frames.
2-4 INITIAL OPERATION
After the Display Terminal is completely aligned. remove the interlock
cheat and replace the display terminal covers.
To determine that the equip-
ment is operating properly, turn on the Display Terminal as described in
paragraph 2-2, type in all cha:racters, and exercise all functions.
Then send
the 'CPU a message which will elicit a reply that can be
u~ed
to check out the
receive mode of operation.
2-10
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