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(
(
Model 1331A
2
10
FRONT PANEL
1.
FOCUS.
Adjusts
sharpness of
trace.
2.
INTENSITY.
Adjusts brightness of trace.
Re-
fer to
Paragraph
3-8.
3.
PERSISTENCE. Adjusts duration
of
trace in
write mode.
4.
ERASE. Press
and
release to remove display
from CRT
viewing area.
Operates in write
mode only.
5.
WRITE. Press in
to
write and display input
information on
CRT.
6.
STORE. Press in to store input information
for an
extended
time on CRT.
7.
VERT POSITION. Adjusts vertical position
of
trace.
8.
HORIZ POSITION. Adjusts horizontal posi-
tion of trace.
9.
LINE indicator. Lights when operating power
is
applied to
instrument.
10. LINE
switch. Applies
operating power to in-
strument.
Operation
B
A
1331A-A-
1
REAR PANEL
A.
LINE.
Connects
instrument
to operating
power.
B.
FUSE.
Protects
instrument from current over-
loads.
C.
SELECTOR.
Connects
power transformer
for
115V
or 230V operation.
D.
BEAM FIND. Brings off-screen
trace
back
into viewing area. Refer to Paragraph 3-5.
E.
ASTIG. Adjusts trace dot
symmetry.
F.
TRACE ALIGN. Aligns
trace
with horizontal
graticule.
G.
Y INPUT. Input
connector
for
y-axis
am-
plifier.
H.
X INPUT. Input connector for x-axis am-
plifier.
I.
Z INPUT. Input
connector
for
z-ax1s
am-
plifier.
Figure
3-1.
Model 1331A
Controls
and
Connectors
3-3
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