AIR FORCE
T033A1
-13-496-1
NAVELEX
0969-LP-170-0010
Operation
Instructions
b.
Intensity
and
Focus.
Demonstrate
INTEN
and
FOCUS
operation
as
follows;
(1)
Rotate
INTEN
between its
maximum
clockwise
and
counterclockwise
positions. The display
should
vary
from
a
blooming
intensity
to
no display.
Reset
INTEN
to
a
comfortable
viewing
level.
(2)
Rotate
FOCUS
between its
maximum
clockwise
and
counterclockwise
positions. The display
should
become
blurred
on
either
side
of an optimum
control
setting.
Reset
the
control
for the best
focused
display.
c.
Vertical
Deflection System.
Demonstrate the
oper-
ation of the
controls
in the
vertical
deflection
system as
follows:
(1
)
Select
CH
1
on
VERT MODE.
There should
be
one display.
(2)
Rotate CH 1
POSITION
between its
maximum
settings.
The
display
should move
off screen in both
verti-
cal
directions.
Reset
POSITION
for
a
visible display.
(3)
Set
VERT MODE to
ALT. There
should be two
displays.
(4)
Alternately rotate
CH
1
and CH 2
POSITION
between their
maximum
settings. Their respective
displays
should
move off
screen in both vertical directions.
Reset
POSITION
for
two
visible displays.
(5)
Set
A
AND B
TIME/DIV
to 20
ms. The CH 1 and
CH
2
traces should be
alternately displaying.
(6)
Set VERT MODE to
CHOP. The CH
1
and
CH
2
traces
should be simultaneously
displayed. Reset A
AND
B
TIME/DIV
to 5
ms and
VERT MODE
to
ALT.
(7)
Set
A
SOURCE
to
LINE.
Push in
and
hold
TRIG
VIEW.
The
display
should
be
a
sample
of
the
power
line
trigger
signal.
Release
TRIG
VIEW
and
reset A
SOURCE
to
CH 1
.
(8)
Set A
AND
B
TIME/DIV to
.5 ms
and
VOLTS/
DIVto
.5.
(9)
Adjust
vertical
POSITION
for
one display
on
each
side of
the
center
horizontal
graticule
line.
If the
display
is
not
stable,
adjust A
LEVEL.
The display
should
be two
vertical
divisions in
amplitude
and each
pulse
width one
division
wide
(corresponds
to a
one
volt
peak to
peak,
one
kilohertz
square
wave
CALIBRATOR
output).
(10)
Set AC-GND-DC
to
GND
and note
the
position
of
the
baseline trace.
Set
AC-GND-DC to
AC.
The
display
should be equally
displayed
on
each side
of the
baseline
trace
position. Reset
AC-GND-DC to
DC.
(11)
Adjust
horizontal
POSITION so the
display
starts
at the
left
vertical
graticule
line.
(12)
Push in
INVERT
and adjust
CH 2
vertical POSI-
TION
for an on
screen
display. The
CH 2 display
should
be
inverted. Push
in
INVERT again
(releases it)
and readjust
POSITION for
separated
dual
displays.
(13)
Rotate CH 2
VAR to
its fully
counterclockwise
position.
The
UNCAL
indicator should
light and
the display
should decrease
in vertical
size to 0.8
divisions or
less. Re-
turn
VAR
to
its fully
clockwise
detent
position.
(14)
Set A
AND B
TIME/DIV to
X-Y and
VERT
MODE
to
CH
2
(same as
OR
X-Y).
The
two
dot
display
should form a
45
degree angle to
the horizontal.
(1
5)
Set CH 1
AC-GND-DC to
GND. The
display
should
be two dots
in
a
vertical line. Reset
control
to
DC.
(16)
Set CH 2
AC-GND-DC to
GND. The display
should be two dots
in
a
horizontal line. Reset control to
DC.
(17)
Set A AND B
TIME/DIV to .5 ms
and VERT
MODE to
ALT.
NOTE
A t this
point there shouid
be a duai dispiay
with
two divisions
of verticai ampiitude and one
division
puise widths. The
dispiays shouid be somewhat
centered in the upper and iower haives
of the screen,
if not, reset the
verticai defiection system controis
and
A
AND
B
TiME/DiV untii this dispiay is ob-
tained before proceeding to the horizontai defiection
system
procedures.
d.
Horizontal Deflection
System.
Demonstrate
the
operation of the controls in the horizontal deflection
system (sweep)
as
follows:
(1)
Normal
and
Magnified
Sweep.
(a)
Set
VERT MODE to
CH 1.
(b) Rotate A
AND B
TIME/DIV one
or two
posi-
tions on
either
side of .5
ms. The
display
sweep rate
should
change.
Reset A
AND B
TIME/DIV
to
.1 ms.
The display
pulse width
should
be five
divisions.
(c)
Rotate
VAR
to
its
fully
counterclockwise
position.
The UNCAL
indicator
should
light and
the dis-
play pulse
width
should decrease to
two
divisions
or less.
Return VAR to
its fully
clockwise
detent
position.
4-40
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