Operating Instructlons-SC
502
calibrator
The i nternal calibrator
of
the
SC
502
provides
a
con
venient
s
ig
n
a
l
source
for
c
h
e
c
k
i
n
g
basic verti cal
gain and
sweep
ti mi ng.
The
cali brator
signal
is
a
l
s
o
useful
for
adj usti ng
probe
compensation,
as
d
e
s
c
r
i
b
ed in
the
probe
I nstructi on
m
a
n
u
al
.
The
o
u
t
p
u
t
square-wave
voltage
is
600
mV,
withi n
1 %.
The
frequency
of
the
square-wave
signal
is
twice
the
power-li ne
frequency.
Vertical
Displays
Slngl.
Trace
Displays.
Either
of
t
h
e
I
nput
channels
c
a
n
be
used
for
si ngle-trace
d
i
s
p
l
a
y
s
.
Appl y the
s
i
gn
a
l
to
the
desi
r
e
d i nput
connector
and
set
t
h
e
MODE
switch
to
display the
channel
used. The trigger
S
O
U RCE
s
w
i
t
c
h
es
can
select
e
i
t
h
e
r
vertical chan nel as
a
tri gger sig
n
a
l
source.
Dual-Trace
Operation
(Alternate Mode).
The
AL
T
position
of
the
MODE
switch
p
ro
d
u
c
e
s
a
displ ay that
alt
e
r
n
a
t
es between
C
h
a
n
n
e
l
1
a
n
d
Channel 2
with
each
s
w
ee
p of
the
crt.
Although
the
AL T
mode
can
be
used
at
all
sweep r
a
t
es
,
the
CHOP
mode
provides
a
more
satisfactory
display at
sweep
rates
b
e
l
ow
about 50
IJS/div.
In
the
CH
1
or
CH
2
p
o
s
i
t
i
o
n
s
of
the trigger
SOURCE
switches,
a
stable
display
of
two
si
gna
l
s
will
be
displayed,
s
h
o
win
g
true time
relationshi p.
If
the signals are not
time
related,
one of
the
Signal s di
s
p
l
a
y
ed
wil l
be
unstable.
Dual-Trace
Operation
(Chopped Mode).
The CHO P
positi on of
the
MODE
switch
produces
a
d
i
s
p
l
a
y
that
is
electronical ly
switched between
channels. I n
general,
the
CHO P
mode
p
r
o
v
i
d
e
s
the
best
d
i
s
p
l
a
y at
sweep rates
slower
than
about
50
ms/di v,
or
whenever
dual-trace,
si ngle-shot
phenomena
are
to
be
displayed.
At
faster
sweep
rates,
the chopped
switching
b
e
c
o
m
es
apparent
and
may
i nterfere
w
i
t
h
the d
i
s
p
l
a
y
.
Proper
external
triggering
for
the
chopped
mode
of
operation
is
obtai ned
by
u
s
i
n
g
external
tri ggeri ng
from
a
signal
that is
ti me-related
to
either
signal .
This
provides
t
h
e
same
r
es
u
l
t
as
t
ri
g
g
e
r
i
n
g
i
n
t
e
r
n
a
l
l
y
from
Channel l or
Channel 2.
Two
signals
that
are
t
i
m
e-
r
e
la
t
e
d
can
be
di spl ayed
in
the
chopped mode,
s
h
o
w
i
n
g
true time relati onshi p.
H
o
w
e
v
e
r
,
if
the
S
i
g
n
a
ls
are
not time-related,
one
s
i g n
a
l
displ ayed
will
appear
unstable.
Algebraic
AddItion.
The CH 1
M I NUS
CH
2
position
of
the
MO DE
s
w
it
c
h
can
be
u
se
d
to
d
i
sp
l
ay
the diHerence
of
two
signals,
for
common-mode
rej ection
to
r
em
ov
e an
undesired
signal .
or for
dc
offset
(applying
a
DC
vo
l
t
a
g
e
to
2-6
one
c
h
a
n
n
e
l
to oHset
t
h
e dc
com ponent
of
a
signal
on
the
other c
ha
n
n
e
l
)
.
The
following
g
e
n
e
r
a
l
precautions
shoul
d
be
observed:
1 .
Do
not
exceed
the Input voltage
rati ng
of
the
SC 502.
2.
Do
not
apply
Signals
that
exceed
an
equival ent
of
about
ei ght
times
the VO L
TS/DIV
switch
setti ng.
For
exam
p
l
e
,
with
a
VOLTS/DIV
switch setti ng
of
0.5,
the
voltage applied
to
that
channel
s
h
ou
l
d
not exceed about
four
volts.
Larger voltages
may
d
i
s
t
o
rt
the di splay
.
3.
Use CH
1
and
CH
2
POSITIO
N control
s
et
t
i
ngs
that
most nearly
po
s
i
ti
o
n
the
signal
of each
channel
to
m
i
d
s
c
r
e
e
n
when viewed i n
e
i
t
h
e
r
the
CH
1
or
CH 2
positions
of
the
MODE
s
w
i
t
c
h
.
This
ensures
the
greatest
dynamic
range
for
CH
1
M I NUS
CH 2
mode operation.
4.
For
similar
response
from
each
channel ,
set
the
CH
1
and
CH
2
AC-GN D-DC
switches
to
the
same
position.
Deflection Factor
The am ount of vertical
d
e
fl
ect
i
on
produced by a
s
i
g
n
al
is
determi ned
by the
S
i
g
n
a
l
amplitude;
the setti ng
of the
VOLTS/DIV
switches,
and
the s
e
t
t
in
g
of
the
VO L
TS/DI V
variable
controls.
The
cal i brated
d
e
f
l
e
ct
i
o
n
factors
i n
d
i
c
ated by the
VOL
TSIDIV
s
w
i
t
c
h
e
s
apply only
when
the
VOL
TS/OIV
variable
control s are
set
to
the
cali brated
p
o
s
it
i
on (ful ly
clockwise
in
detent) .
The
VOL
TS/DIV
v
a
r
i
a
bl
e
controls
provide
conti nuous
ly variabl e
(uncali brated)
v
e
rt
i
c
a
l
deflection
factors
between the
cali brated
setti ngs
of
the VOLTS/DIV
s
w
i
t
c
he
s
.
The
VO L
TS/DIV variable
c
o
nt
r
ol s
extend the
maximum
v
e
rt
i
c
a
l
deflection
factor
to
at
least
50 V
per
division.
Reliable signal
measurements cannot
be
made
u n l ess
both
the oscillOSCOpe
and
the
unit
under
test are con
nected
t
og
e
t
h
e
r
by
a
c
o
m
m
on reference (ground) lead
i n
a
d
di
t
i
o
n
t o
the
s
i
g
n
a
l lead or
probe.
The
grou nd
strap
on
the
s
i
g
n
a
l
p
r
o
b
e
provides
the
best ground.
Also,
a
ground
l
e
a
d
can
be
c
o
nn
ec
t
e
d
to
the
p
o
s
t
chassis
grou nd to
establish
a common
g
r
o
u
n
d
with
the Signal
source
.
Input Coupling
The
AC-G NO-OC
sw
i
t
c
h
e
s
allow a
choice of
c
ou
p
l
i
ng
method
for
the
a
p
p
l
i
e
d
signal. The
type of
d
i
s
p
l
a
y
desired
and
the
applied
signal determi nes
t
h
e
coupling
method
to
use.
@
MAY 1 980
Summary of Contents for SC 502
Page 1: ...SC 502 OSCILLOSCOPE ...
Page 2: ......
Page 9: ...SC 502 1878 1 The SC 502 Oscilloscope xi REV APR 1982 ...
Page 10: ...Verso Filler Page z z ...
Page 32: ...Verso Filler Page z z ...
Page 34: ...Verso Filler Page z z ...
Page 63: ...Section 6 SC 502 OPTIONS There are no options available at this time REV A APR 1980 6 1 ...
Page 84: ...Beam R873 C473 Ext Bal R535 CH 1 Vert Po R335 CH 2 Vert Pos R394 ADJUSTft TP980 5 ...
Page 125: ...REV MAR 1 984 ...
Page 126: ...SC 502 m m o ...