Operating instructions
d
.
ADJUST-13430
(Mag
Gain)
for
1
marker/division
over
the
center
8
divisions
of
display
.
e
.
Set the
time-mark
generator
for
5-millisecond
mar-
kers
.
Align
the
center
time
marker
with
graticule
center
.
~/
f
.
CHECK-Set
the
MAG
switch
to
X1
and
check
that
the center
time
marker
is
at
graticule
center within
0
.5
division
.
g
.
ADJUST-13445
(Mag
Reg)
to
align
the
center
time
marker
with
graticule
center
.
h
.
INTERACTION-Set
the
MAG
switch
to
X10
and
repeat
parts
e, f,
and
g
as
necessary
.
~/
B4
.
CHECK
VARIABLE
TIME/DIVISION
AND
VARI-
ABLE
HOLDOFF
a
.
Press
and
release
the
VARIABLE
TIME/DIV
control
for
uncalibrated
sweep
rates
.
Set the
VARIABLE
con-
trol
fully
clockwise
and
note
3
time
markers
in
10
grati-
cule
divisions
.
N/
b
.
CHECK-Set
the
VARIABLE
control
fully
counter-
clockwise
and
check
for
2
divisions
or
less
between
5-
millisecond
markers
.
c
.
Press
the
VARIABLE
control
in
for
calibrated
sweep
rates
.
d
.
Set
the
LEVEL
control
for
a
free-running display
(TRIG'D
light
off)
.
e
.
Set the
HOLDOFF
control
fully
counterclockwise
.
~/
f
.
CHECK-Rotate
the
HOLDOFF
control
slowly
clockwise
throughout
its
range
and
check
that
the
dis-
play
(3
time markers
in
10
divisions)
will
stabilize
at
least
3
times
throughout the
range
of
the
HOLD
OFF
control
(disregard
any
slow
drift)
.
g
.
Set the
HOLD
OFF
control
counterclockwise
to
MIN
and
set
the
LEVEL
control
for
a
stable
display
.
Performance
Requirement
check
;
see
introductory
section
.
\/
B6
.
CHECK
SWEEP
TIMING
Performance
Check
and
Adjustment-71380
B5
.
ADJUST
SWEEP
TIMING
(C330,
13710, 13715)
a
.
Set the
TIME/DIV
switch
to
50
ns
and
set
the
time
mark
generator for
50-nanosecond
markers
.
b
.
Check
for
1
marker/division
over
the center
8
divi-
sions
of
display
(position
as
necessary)
.
c
.
ADJUST-C330
(50
ns
Timing)
for
1
marker/division
over
the
center
8
divisions
of
display
(position
as
necessary)
.
d
.
Set
the
TIME/DIV
switch
to
10
ps
and
set
the
time-
mark
generator
for
10-microsecond
markers
.
e
.
Check
for
1
marker/division
over
the
center
8
divi-
sions
of
display
(position
as
necessary)
.
f
.
ADJUST-13710
(10ps
Timing)
for
1
marker/division
over
the
center
8
divisions
of
display (position
as
necessary)
.
g
.
Set the
TIME/DIV
switch
to 10
ms
and
set
the
time-
mark
generator for
10-millisecond
markers
.
h
.
CHECK-For
1
marker/division
over
the
center
8
divisions
of
display
(position
as
necessary)
.
i .
ADJUST-13715
(10
ms
Timing)
for
1
marker/division
over
the center
8
divisions
of
display
(position
as
necessary)
.
NOTE
The
tolerances
given
in
Table
5-2
are for
an
am-
bient
temperature
range
of
+
15
°
to
+35
°
C
.
If
outside
this
range,
see the Specification section
for
applicable
tolerances
.
a
.
Remove
the
71380
and
plug-in
extender
from
the
mainframe,
then
install
the
71380
directly
into
the
B
horizontal
compartment
.
5-
9