Operating instructions
d
.
Set
the
TRIGGERING
MODE
to
AUTO
.
N/
e
.
CHECK-Set
the
TRIGGERING
LEVEL
control
for
a
stable
display
(TRIG'D
light
on)
.
V
f
.
CHECK-For
a
free-running display
with
TRIG'D
light
off
when
the
TRIGGERING
LEVEL
control
is
set
fully
clockwise
and
fully
counterclockwise
.
g
.
Set
the
TRIGGERING
MODE
to
NORM
.
V
h
.
CHECK-Set
the
TRIGGERING
LEVEL
control
for
a
stable
display
(TRIG'D
light
on)
.
~/
i .
CHECK-For
no
display
(TRIG'D
light
off)
when
the
TRIGGERING
LEVEL
control
is
set
fully
clockwise
and
fully
counterclockwise
.
j
.
Set
the
TRIGGERINGLEVEL
control
for
a
stable
display
(TRIG'D
light
on)
.
k
.
Set the
TRIGGERING
MODE
to
SINGLE
SWP
and
the
SOURCE
to
EXT
.
~/
I .
CHECK-Press
the
SINGLE
SWP
RESET
push button
and
check
that
the
READY
light
is
on
.
~/
m
.
CHECK-For
one
sweep
and
that
the
READY
light
is
out
after
completion of
that
sweep
when
the
INT
SOURCE
push button
is
pressed
(oscilloscope
intensity
may
need
to
be
increased
to
view the
single-sweep
display)
.
n
.
Remove
signal
connection
.
N/
A3
.
CHECK
EXTERNAL
LEVEL
RANGE
a
.
Connect
the
low-frequency
sine-wave
generator
to
the
EXT
TRIG
IN
connector with
a
42-inch
50-ohm
cable
and
T
connector
.
Connect
the output of
the
T
Connect-
or to
the
amplifier
unit
input
with
an
18-inch
50-ohm
cable
.
b
.
Set
the
TRIGGERING
MODE
to
AUTO,
SLOPE
to
(+),
and
SOURCE
to
EXT
.
Set
the
TIME/DIV
switch
to
0
.5
ms
and
the
EXT
TRIG
IN
attenuator
to IN
-
1 .
J
Performance
Requirement
check
;
see
introductory
information
.
Performance
Check
and
Adjustment-71380
c
.
Set
the
amplifier
unit
deflection
factor
for
0
.5
volts/
division
.
Set
the
low-frequency
sine-wave
generator
for
a
6-division
display
(3
volts) at
1
kilohertz
.
~/
d
.
CHECK-That
all
levels
of
the
positive
slope
may
be
selected
for
the
sweep
starting
point
as
the
TRIGGER-
ING
LEVEL
control
is
rotated
throughout
its
range
(indicates
an
external
level
range
of
at
least
plus
and
minus
1
.5 volts)
.
Check
that
the
display
is
not
triggered
at
either
end
of
the
LEVEL
control
rotation
.
_V/
e
.
CHECK-Change
the
TRIGGERING
SLOPE
to
(-)
and
repeat part
d
for
the
negative
slope
of
the
waveform
.
V
A4
.
CHECK
EXTERNAL
TRIGGERING
SENSITIVITY
a
.
Set the
amplifier
unit deflection factor
for
10
milli-
volts/division
.
Set
the
low-frequency
sine-wave
generator
for
a
5-division
display
(50
millivolts)
at
30
hertz
.
b
.
Set
TRIGGERING
SLOPE
to
(+),
MODE
to
NORM,
TIME/DIV
to
20
ms,
and
set
the
LEVEL
control
for
a
stable
display
.
~/ c
.
CHECK-Set
the
TRIGGERING
MODE
to
AUTO
and
check
for
a
stable
display
(TRIG'D
light
on)
with
the
COUPLING
push
button
set
to
:
1
.
AC
2
.
AC
H
F
R
EJ
3
.
DC
(Set
TRIGGERING
LEVEL
control
as
necessary)
.
~/
d
.
CHECK-Change
the
TRIGGERING
SLOPE
to
(-)
and
repeat part
c
.
e
.
Set the
TRIGGERING
MODE
to
P-P
AUTO
and
COUPLING
to
AC
.
f
.
Set the
amplifier
unit deflection
factor
for
a
0
.1
volt/
division
and
the
low-frequency
sine-wave
generator
for
a
5-division
display
(500
millivolts)
at
50
hertz
.
~/
g
.
CHECK-For
a
stable
display
(TRIG'D
light
on)
at
all
settings
of the
LEVEL
control
with
COUPLING
set
to
:
1
.
AC
2
.
DC
5-5