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(
(
Model
1331A
ii-7.'I.
Hquipment.
Sine
wave
generator.
:)-7-1.
Procedure.
a. Set
Model
1331A
controls
as
follows:
WRITE
....
..
....
.
....
.
....
.
....
.
....
.
...
m
INTENSITY...........
.
...
..
...
as
required
PERSISTENCE.
.
. .
.
. .
.
.
. . . . . . .
.
. .
. . . . .
ccw
POSITION
(HORIZ and
VERT(
. . .
.
centered
b.
Connect
500 kHz,
1
V p-p
output of sine
wave
generator to both X
INPUT
and Y
INPUT.
c.
Set phase shift adj
A5Cl3
to
minimize
opening
at
center
of resultant
ellipse.
5-75.
WRITING RATE ADJUSTMENT.
6-7(j_
Reference.
Schematic
7,
table
5-1,
and
figure 5-4.
ii-77.
1' . ,
'
quipment.
a.
Sine wave generator.
b.
Oscillator.
c.
Pulse generator.
d. Oscilloscope.
:)-7H.
Procedure.
a. Set
Model 1331A
controls
as
follows:
WRITE
...
.
.....
.
....
.
....
.
...
.
....
.
....
.
m
INTENSITY
..........
.
...
.
.....
as
required
PERSISTENCE
. . . . . . .
.
. . . . . .
.
. .
.
. . .
.
. . .
cw
POSITION (HORIZ
and
VERT)
.. . .
centered
b.
Connect
70-Hz,
1
V
p-p
sine
wave from
sine
wave
generator to
X INPUT.
c. Connect
5-Hz, l
V p-p
sin
e
wave
from
oscil-
lator
to Y INPUT.
d.
Set
pulse
generator controls as follows:
repetition
rate.
. . . . .
.
.
. . . . . . . . . .
.
.
.
. .
100 Hz
pulse
width
. .
.
. . .
.
.
. . .
.
. .
.
. .
. . .
.
.
.
. .
.
4
usec
pulse amplitude
. .
.
. .
. . .
. .
.
. . .
.
. . . . . .
.
. . .
1 V
pulse polarity
.
.
.
.
. .
.
. . .
.
.
. . .
.
.
.
.
.
.
.
positive
e. Apply output of pulse gennator to Z
INPUT.
f.
Connect oscilloscope
to intensity gate output
(collector
of A3Ql0).
Adjustments
g.
Turn INTENSITY
cw
until
amplitude of in-
tensity
gate output
pulse
is
maximum.
h.
Change pulse
polarity to
negative.
1.
Press
and release
ERASE pushbutton.
j.
Momentarily
switch
pulse polarity to positive;
then
back to
negative.
Resultant dot pattern
on
CRT
should
be
uniform over entire graticule area
except
for a
small
amount of a llowable
degradation
on
outer
0.5 division.
k.
If
pattern is
not
uniform,
set write
depth
adj
A5Rl8B
slightly
ccw
.
I.
Press and release
ERASE
pushbutton; then
repeat
step j.
m.
If
writing
is
uniform, press
and
release
ERASE
pushbutton.
n.
If
erasure
is
not
complete after single erase
cycle,
set write
depth
adj
A5Rl8B
s lightly
cw.
o.
Repeat
steps
j
through
n until most uniform
writing characteristics a long with best
erase
ch
arac-
teristics
are
achieved.
5-79.
STORE TIME
ADJUSTMENT.
.5-8U.
Reference.
Schematics 6 and 7, table 5-1,
and
figure
5-4.
6-8
1.
Equipment.
a.
Sine
wave
generator.
b.
Oscillator.
c.
Pulse
generator.
d.
Oscilloscope.
6-H2.
Procedure.
a.
Set
Model 1331A
controls as fo llows:
WRITE.
................................
.
in
INTENSITY
.
.
. .
. .
.
. . . . .
.
. .
. .
.
. . .
.
. . . .
.
ccw
PERSISTENCE. .
.
.
.
. . . .
.
. . .
.
. . . .
.
. . . .
.
.
cw
POSITION (HORIZ and VERT)..
.
.
centered
b.
Apply
70-Hz,
1
V p-p sine wave
from
sme
wave
generator to X
INPUT.
c.
Apply
5-Hz,
l V
p-p
sine wave from oscil-
lator
to
Y
INPUT.
5-9
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