Casa CS-1022 User manual
CS-1
022,CS-1
021
,CS-1
01
2
(DUAL TRACE OSCILLOSCOPE)
CS-1
020,CS-1
01
0
(SINGLE TRACE OSCILLOSCOPE)
INSTRUCTION
MANUAL
SAFETY
Symbol in This Manual
ft.
This symbol indicates where applicable cautionary or
other information
is
to
be
found.
Power Source
This equipment operates from a power source
that
does
not apply more than
250
V rms between the supply con-
ductors or between either supply conductor
and
ground. A
protective ground connection by
way
of
the grounding con-
ductor in the power cord
is
essential for safe operation.
Grounding the Product
This equipment is grounded through the grounding conduc-
tor
of
the power cord. To avoid electrical shock, plug the
power cord into a properly wired receptacle before connec-
ting
to
the equipment input or output terminals.
Use
the Proper Power Cord
Use
only the power cord
and
connector specified for your
product.
Use
the Proper Fuse
To avoid fire hazard, use a fuse
of
the correct type.
Do
not Operate in Explosive Atmospheres
To avoid explosion, do not operate this product
in
an
ex
-
plosive atmosphere.
Do not Remove Cover or
Panel
To avoid personal injury, do not remove the cover
or
panel.
Refer servicing
to
qualified personnel.
Voltage Conversion
If
the power source
is
not applied
to
your product, contact
your dealer. To avoid electrical shock, do not perform the
voltage conversion.
CONTENTS
SAFETY
........................................................
2 TRACE ROTATION COMPENSATION
......................
19
FEATURES
.....................................................
3
DC
VOLTAGE MEASUREMENTS
............................
19
MEASUREMENTS
OF
THE
VOLTAGE
SPECIFICATIONS............................................
4
BETWEEN
TWO POINTS
ON
A WAVEFORM
...........
20
PREPARATION
FOR
USE
...........
............
............
6 ELIMINATION
OF
UNDESIRED
SIGNAL
CONTROLS AND INDICATORS .......................... 8 COMPONENTS
.................................................
20
FRONT
PANEL....................................................
8 TIME MEASUREMENTS
........................................
21
REAR
PANEL
......................................................
14
FREQUENCY
MEASUREMENTS
.............................
21
OPERATION
...................................................
14
PULSE
WIDTH MEASUREMENTS ....
........................
22
PULSE
RISE
TIME AND FALLTIME
INITIAL STARTING
PROCEDURE
............................
15
MEASUREMENTS
..............
....
.........
...................
22
(1) NORMAL
SWEEP
DISPLAY OPERATION
................
15
TIME
DIFFERENCE
MEASUREMENTS
......................
23
(2) MAGNIFIED
SWEEP
OPERATION
..........................
18
PHASE
DIFFERENCE
MEASUREMENTS
...................
24
(3) X-V OPERATION
...............................................
18
RELATIVE MEASUREMENTS
.................................
24
(4) VIDEO SIGNAL OBSERVATION
............................
18
APPLICATION
OF
X-V OPERATION
.........................
27
APPLICATION
................................................
19
ACCESSORIES
...............................................
29
PROBE
COMPENSATION
........................
.
.............
19
Note: This instruction manual
is
described for five models.
Refer
to
item applied
to
your product.
2
FEATURES
• Vertical axis has high sensitivity and wide bandwidth
and especially covers fully specified frequency response
at 2mV/div for all models.
CS
-
1022,
1021 ;
CS
-
1012;
CS
-1
020;
CS
-
1010;
Dual Trace
1mV/div
:
DC
to
10
MHz, - 3 dB
2mV/div
:
DC
to
20
MHz,
-3
dB
Dual Trace
1mV/div :
DC
to
7 MHz, - 3 dB
2mV/div :
DC
to
10
MHz,
-3
dB
Single Trace
1mV/div :
DC
to
10
MHz, - 3 dB
2mV/div
:
DC
to
20
MHz,
-3
dB
Single Trace
1mV/div :
DC
to
7 MHz,
-3
dB
2mV/div
:
DC
to
10
MHz, - 3 dB
• Vertical sensitivity range is selectable from 1mV/div
to
5V/div
with
rotary
switch
continuously.
• Time base permits
the
high sweep speed.
CS
-1
022,
1
020;
20nsec/div (x 10 MAGI
CS
-
1021,
1012, 1010;
50nsec/div
(x10
MAGI
• Vertical sensitivity error and sweep rate error
are
±3%
and accurate measurements are provided.
• The 1
50
mm
rectangular CRT
with
internal graticule
provides high brightness and accurate measurements,
free
of
parallax error.
CS
-1
022,
1
020;
domed mesh
type
CRT
with
post-
deflection acceleration and high brightness
phosphors (acceleration voltage; 6 kV).
CS
-
1021, 1012,
1010;
high brightness CRT (acce-
leration voltage; 2 kV).
• For convenience in making rise time measurements, the
0%,
10%,
90%
and
100%
levels
are
marked on the
graticule scale
of
the CRT.
• Trace rotation is electrically adjustable from the front
panel.
• By SCALE ILLUM control, the waveform is easy observ-
ed
in
the
dark and the photograph
of
the waveform
is
easy provided. (Except
CS
-1
021)
• Selectable AUTO
FREE
RUN
function provides sweep
without
trigger input signal.
• The FRAME-
LINE
switch
provides selection
of
sync
pulse
for
sweep triggering from small amplitude
to
large
amplitude
without
adjusting when viewing composite
video waveforms.
• For CS-1
022,
1021
and
1012
, vertical mode
automatically provides the trigger signal with
TRIG
SOURCE
and
V. MODE switches.
• X-Y operation is easy provided by
one
-touche.
CS
-
1022
,
1021,
1012;
CH1
Y axis,
CH2 X axis
CS
-
1020,
1010
;
VERT
INPUT Y axis
EXT
TRIG
INPUT X axis
•
CS
-1
02
2 and 1
012
are provided
with
CH
1 OUTPUT
terminal
to
monitor input signal
of
CH
1.
e
CS
-
1020
and
1010
are
provided
with
VERT
OUTPUT
terminal
to
monitor input signal
of
VERT
INPUT.
3
r
SPEC
IFICATIONS
CS-1022 CS-1021 CS-1012 CS-1020
CS
-
1010
CRT 150FTM31
150GTM31A
150GTM31A
150FTM31 150GTM31A
Acceleration Voltage 6 kV 2 kV 2 kV 6 kV 2 kV
Display Area 8 x 1
0 div (
1 div = 1
0 mm)
Type Rectangular,
with
internal graticule
VERTICAL
AXIS
CH1
and CH2 -
Sensitivity 1 mV/div
to
5 V/div,
±3%
Attenuator
12
steps, 1 mV/div
to
5 V/div in 1-2-5 sequence.
Vernier control for fully adjustable sensitivity between steps.
Input Impedance 1
MO
±
2%
, approx. 35pF 1
Mil
±2%,
appro
x.
32
pF
1
Mil
± 2%, approx. 35pF
Frequency Response
DC
;
DC
to
20
MHz,
DC
;
DC
to
10
MHz,
DC
;
DC
to
20
MHz,
DC
;
DC
to
10
MH
z,
2 mV/div
to
5 V/div - 3
dB
- 3
dB
- 3
dB
- 3
dB
AC; 5
Hz
to
20
MHz, AC;
5H
z
to
10
MHz, AC; 5
Hz
to
20
MHz, AC;
5H
z
to
10
MH
z,
- 3
dB
- 3
dB
- 3
dB
- 3
dB
1
mV
/div
DC
;
DC
to
10
MHz,
DC
;
DC
to 7 MHz,
DC
;
DC
to
10
MHz,
DC
;
DC
to
7 MHz,
- 3
dB
- 3
dB
- 3 dB - 3
dB
AC
;
5Hz
to
10
MHz, AC; 5
Hz
to
7 MHz, AC;
5H
z
to
10
MHz, AC; 5
Hz
to 7
MH
z,
- 3
dB
- 3
dB
- 3
dB
- 3
dB
Rise
Time 17.5 nsec or less
35
nsec or less
17
.5 nsec or less
35
nsec or
le
ss
(20 MHz) (10 MHz) (20 MHz) (10 MHz)
35
nsec or less
50
nsec or less
35
nsec or
less
50
nsec or
less
(10
MHz) (7 MHz) (10 MHz)
(7
MHz)
Crosstalk -
40
dB
minimum -
Operating Modes
CH1
; single trace
CH2; single trace
ADD;
CH1
+ CH2 added display -
ALT;
two
waveforms alternating
CHOP
;
two
waveforms chopped
Chop Frequency Approx.
250
kHz
-
Channel Polarity Normal or inverted, CH2 only inverted -
Maximum Input voltage
500
Vp-p or
250
V
(DC+
AC peak)
Non-Distorted More than 8 div, More than 5 div, More than 6 div, More than 8 div, More than 6 div,
Maximum Amplitude
DC
to
20
MHz
DC
to
20
MHz
DC
to
10
MHz
DC
to
20
MHz
DC
to
10
MHz
HORIZONTAL
AXIS
(Input thru CH2, x
10
MAG
not
included) (x 10 MAG not included)
Operating Mode With
TRIG
MODE switch, X-Y
With
TRIG
MODE switch, X-Y
operation
is
selectable. operation
is
selectable.
CH1
; Y axis
VERT
. INPUT; Y axis
CH2; X axis
EXT
TRIG
INPUT; X axis
Sensiti
vity
Same
as
vertical axis (CH2)
100
mV/div
Input Impedance
Same
as
vertical axis (CH2) 1
MO
±2%
, 1
MO
± 2%,
approx. 32pF approx.
35
pF
Frequency
Respon
se
DC
;
DC
to
1 MHz,
DC
;
DC
to
500
kHz
,
DC
;
DC
to
1 MHz, DC;
DC
to
500kHz
,
- 3
dB
- 3
dB
- 3
dB
- 3
dB
AC; 5 Hz
to
1 MHz,
AC
; 5 Hz
to
500
kHz,
- 3
dB
- 3
dB
X-Y
Phas
e Difference 3° or
le
ss at
100
kHz
3°
or
le
ss
at
50
kH
z 3° or less
at
100
kH
z 3° or less at 50
kHz
Maximum Input Voltage
Same
as
vertical axis (CH2)
50
V
(DC+
AC
peak)
SWEEP
Type NORM Triggering sweep
AUTO Sweep free runs in absence
of
trigger
4
CS-1022 CS..1021 I CS-1012 CS-1020 CS-1010 I
Sweep
Time
0.2 ,.s/div to 0.5 sldiv, 0.5 ,.s/div to 0.5 s/div, 0.2 ,.s/div to 0.5 sldiv, 0.5 ,.s/div to 0.5 sldiv,
z3%
in
20
ranges
, in z
3%
in
19
range
s,
in
z3%
in
20
ranges
, in
z3%
in
19
ranges,
in
1-2-5
sequence
. 1-2-5
sequence
. 1-2-5
sequence.
1-2-5
sequence
.
Vernier
control
provides
Vernier control provides
Vernier
control
provides
Vemier
control
provides
fully adjustable sweep fully adjustable sweep fully adjustable sweep fully adjustable sweep
time between steps. time between steps. time between step
s.
time between steps.
Sweep
Magnification
x
10
(ten
times)
±
5%
Uneari
ty
±3%
all ranges,
±
5%
on
0.2 ,.s/div range
at
x
10
magnification
.
TRIGGERING
Internal
Sync
V.
MODE; Triggered
by
input
signal selected I
NT
; Triggered
by
vertical
input
signal
by
vertical
MODE
setting
. LINE;
Triggered
by
line
voltage
CH1 ; Triggered
by
CH1 signal
CH2
; Triggered
by
CH2
signal
LINE; Triggered
by
line
voltage
External
Sync
EXT; Triggered
by
signal applied
to
EXT
TRIG INPUT
jack
External
sync
Input
1 MO,
±2%
1 MO. ± 2% 1 MO. ±
2%
1 MO, ±
2%
Impedance
approx
.
32pF
approx
.
35pF
approx.
30pF
approx
.
30pF
Maximum
External
50
V (DC +
AC
peak)
Trigger
Voltage
Coupling
AC,
VIDEO FRAME, VIDEO LINE
Tigger
Sensitivity
FREO
.
RANGE
INT
EX
T
FREO
.
RANG
E
IN
T EXT
FR
EO,
RANG
E
IN
T
EX
T
FR
EO.
RANG
E
IN
T
EXT
FR
EO.
RANG
E
INT
EXT
AUTO
20Hz
"'
20MHz
l
di
v O.lVp-p 20Hz
"'
20MHz
1dfv
0.2
Vp-p
20Hz"'
1
0MHz
1
div
O.
lVp-p
20Hz1D
20MHz
1
div
0.1V
I>1>
20Hz
"'
10MHz
1
dlv
0.1V
1>1>
NORM
1
OH.t
to2
0MHz
1di
v 0.
1Vp-p
1OH
z to 2
0MH
z ldiv 0.
2Vp-p
10Hz
to
1
0M
Hz
ld
fv
0.
1Vp-p
1
OHz
to 2
0M
Hz
1
dlv
0.1
V1>1>
1
OHz
to
1
OMHz
tdiv
0.
1V.,..,
VIDEO
FRAME
,
UNE
1
dlv
o.
tv.,..,
FRAM
E,
UN
E
1dlv
0.
2V1>1>
FRA
ME,UNE ldiv 0.1
Vp-p
F
RAM
E,UNE t
div
O.t
V.,..,
FRAM
E,UNE 1
dlv
0.1
V.,..,
PROBE
ADJ.
VOLTAGE
0.5
V, ±
6%,
square
wave
,
positive
polarity
,
approx
. 1 kHz
INTENSITY MODULATION
Sensitivity
TTL
compatible
Positive
voltage
increases
brightness
.
Negative
voltage
decreases
brightness
.
Input
Impedance
Approx
.
10
kO
Usable Frequency Range DC
to
2
MHz
DC
to
1
MHz
DC
to
2
MHz
DC
to
1
MHz
Maximum
Input
Voltage
50
V
(DC+
AC
peak)
VERTICAL AXIS SIGNAL
CH1
SIGNAL
OUTPUT
-
CH1
SIGNAL
OUTPUT
VERTICAL
SIGNAL
OUTPUT
OUTPUT
Output
Voltage
Approx. 50mV/div -
Approx
.
50
mV/div
(50
0 load)
(50 0 loadl
Output
Impedance
Approx
.
50
0 -
Approx
.
50
0
Frequency Response
100Hz
to
20
MHz
, -
100Hz
to
10
MHz,
100
Hz
to
20
MHz
,
100Hz
to
10
MHz
,
- 3 dB
(50
0 load) - 3 dB
(50
0 load) - 3 dB
(50
0 load) - 3
dB
(50
0 load)
TRACE ROTATION Electrical, adjustable
from
front
panel
POWER REQUIREMENT
AC
100/120/220/240
V ±
10%
50/60Hz
Power
Consumption
Approx
.
43
W
Approx
.
39
W
Approx
.
41W
Approx
.
38W
Approx
.
36W
I
DIMENSIONS ( I
dimensions
Include
protrusions
from basic outline
dimensions
.
Width
260
mm
(260
mm)
Height
160
mm
(180
mm)
Depth
400
mm
(460
mm)
-----
-
---
--
---
---
---
-----
-
---
--
5
CS-1022
CS-1021 I
CS-1012
I
CS-1020
CS-1010
WEIGHT Approx.
8.8
kg
Approx.
8.4
kg
Approx. 8.1
kg
ENVIRONMENT I
Operating Temperature
and
0°C
to
40°C,
85%
maximum
RH
Humidity
for
Guaranteed
Specifications
Full Operating Temperature
0°C
to
50°C,
90%
maximum
RH
and
Humidity
ACCESSORIES
Probe 2 I 1
Instruction Manual 1
Replacement
Fuse
0.8 A 2
0.
5A
2
• Circuit
and
rating
are
subject
to
change
without
notice due
to
developments in technology.
PREPARATION FOR USE
SAFETY
Before connecting
the
instrument
to
a power source,
carefully
read
the following information, then verify that
the proper power cord is used
and
the proper line fuse
is
in-
stalled for power source. The specified voltage
is
shown at
the left side of the power cord on the rear panel. If the
power cord
is
not
applied for specified voltage, there
is
always a certain amount
of
danger from electric shock.
Line voltage
This instrument operates using ac-power input voltages
that
100/120/220/240
V at frequencies from
50
Hz
to
60Hz.
Power cord
The ground wire
of
the 3-wire
ac
power plug places the
chassis
and
housing
of
the oscilloscope at earth ground.
Do
not attempt
to
defeat the ground wire connection or float
the oscilloscope;
to
do so may pose a great safety hazard.
The appropriate
power
cord
is
supplied by
an
option
that
is
specified when the instrument
is
ordered.
The optional power cords are shown
as
follows in
Fig.
1.
Line fuse
The fuse holder
is
located on the rear panel
and
contains
the line fuse. Verify
that
the proper fuse
is
installed by
replacing the line fuse.
6
EQUIPMENT PROTECTION
1. Never allow a small spot
of
high brilliance
to
remain sta-
tionary on the screen for more than a
few
seconds. The
screen may become permanently burned. A spot will oc-
cur only when the scope
is
set up for X-Y operation
and
no signal
is
applied. Either reduce
the
intensity so the
spot is barely visible,
switch
back
to
normal sweep
operation when no signal is applied, or set up the scope
for spot blanking.
2. Never cover the ventilating holes on the
top
of
the
oscilloscope,
as
this will increase the operating
temperature inside the case.
3. Never apply more than the maximum rating
to
the
oscilloscope inputs.
CS
-
1022,
1021, 1012;
CH1, CH21NPUT jacks
500
Vp-p or
250
V
(de+
ac
peak)
EXT
TRIG
INPUT and Z AXIS INPUT
jacks
50
V
(de+
ac
peak)
CS
-
1020,
1010;
VERT
INPUT jack
500
Vp-p or
250
V
(dc+ac
peak)
EXT
TRIG
INPUT
and
Z AXIS INPUT
jacks
50
V
(de+
ac
peak)
Never apply external voltage
to
the oscilloscope output
terminals.
4.
Always
connect a cable from the earth ground
(GND)
jack
of
the oscilloscope
to
the chassis
of
the equipment
under test. Without this caution,
the
entire current for
the equipment under test may
be
drawn through the
probe clip leads under certain circumstances. Such con-
ditions could also pose a
safety
hazard, which
the
ground cable will prevent.
5.
Always
use the probe ground clips
for
best results. Do
hot
use an external ground wire in lieu
of
the
probe
ground clips,
as
undesired signals may
be
introduced.
6. Operation adjacent
to
equipment
which
produces strong
ac magnetic fields should be avoided where possible.
This includes such devices
as
large
power
supplies,
transformers, electric motors,
etc
.,
that
are often found
in
an
industrial environment. Strong magnetic shields
can exceed the practical CRT magnetic shielding limits
and result interference and distortion.
Plug
configuration
Power
cord
and plug type
~
North
American
120 volt/60
Hz
Rated
15
amp
(
12
amp
max;
NECt
~
Universal
Europe
220 volt/50
Hz
'
Rated
16
amp
' U.K.
240 volt/50
Hz
Rated
13
amp
~
Australian
240 volt/50
Hz
Rated
10
amp
~
North
American
240 volt/60
Hz
Rated
15
amp
. (
12
amp
max;
NECt
~
Switzerland
240 volt/50
Hz
Rated
10
amp
7. Probe compensation adjustment matches the probe
to
the
input
of
the
scope. For best results, compensation
of
probe should
be
adjusted initially, then the same pro-
be
always used
with
the
input
of
scope. Probe compen-
sation should be readjusted whenever a probe from a
different
scope is used. (See page 19)
8. Do
not
depress
two
or more push-switches
of
the
ver-
tical MODE
switch
simultaneousely. (Except ADD)
Damage
to
instrument
may
result.
(CS-1
022,
CS-
1021,
CS-
1012)
9. In X-Y operation, do
not
pull
out
the
PULLx
10
MAG
switch.
If
pulled
out
it,
noise may appeare on the
waveform.
Factory
instaled
Line
cord
plug
fuse
instrument
fuse
0.8
A,
250 V
Fast
blow
None
AGC/3AG
0.5
A,
250 V
Fast
blow
None
5x20
mm
0.5 A, 250 V 0.5 A
Fast
blow
5x20
mm
Type
C
0.5 A, 250 V
Fast
blow
None
5x20
mm
0.5 A, 250 V
Fast
blow
None
AGC/3AG
0.5
A,
250 V
Fast
blow
None
AGC/3AG
5x20
mm
Fig.
1
Power
Input
Voltage
Configuration
7
CONTROLS
AND
INDICATORS
CS-1022,
1021,
1012
CS-1020,
1010
®®
Fig. 2 Fig. 3
FRONT PANEL
CS-1022,
1021,
1012
CS-1020,
1010
CD
• POSITION
CD
• POSITION
Rotation adjusts vertical position
of
channel 1 trace. Rotation adjusts vertical position
of
trace.
In
X-Y operation, rotation adjusts vertical position
of
In
X-Y operation, rotation adjusts vertical position
of
display. display.
® VOLTS/DIV ® VOLTS/DIV
Vertical attenuator
for
channel 1; provides step adjust-Vertical attenuator. Coarse adjustment
of
vertical sen-
ment
of
vertical sensitivity. When VARIABLE control sitivity. Vertical sensitivity
is
calibrated
in
12
steps
®
is
set
to
CAL, vertical sensitivity
is
calibrated in
12
from 5 V/div
to
1 mV/div when VARIABLE control
steps from 5 V/div
to
1 mV/div. ® is set
to
CAL.
For X-Y operation, this control provides step adjust- For X-Y operation this provides step adjustment
of
ver-
ment
of
vertical sensitivity. tical sensitivity.
® VARIABLE Control @ VARIABLE Control
Rotation provides fine control
of
channel 1 vertical Vertical attenuator adjustment.
Fine
control
of
vertical
sensitivity. In the fully clockwise (CAL) position, the sensitivity.
In
the fully clockwise (CAL) position, the
vertical attenuator
is
calibrated. For
X-
Y operation, this vertical attenuator
is
calibrated. For X-Y operation, this
control serves
as
the Y axis attenuation fine adjust-control serves
as
the Y axis attenuation fine adjust-
ment. ment.
8
CS-1022,
1021,
1012
@ AC-GND-DC
Three-position lever
switch
which
operates
as
follows:
AC: Blocks
de
component
of
channel 1 input
signal.
GND: Opens signal path and grounds input
to
ver-
tical amplifier. This provides a zero-signal base
line,
the
position
of
which
can
be
used
as
a
reference
when
performing
de
measurements.
Direct input
of
ac and de component
of
chan-
nel 1 input signal.
DC:
@ INPUT Jack
Vertical input
for
channel 1 trace. Vertical input
for
X-Y
operation.
@ VOLTS/DIV
Vertical attenuator
for
channel 2; provides step adjust-
ment
of
vertical sensitivity. When VARIABLE control
(j) is set
to
CAL, vertical sensitivity is calibrated in
12
steps from 5
V/div
to
1 mV/div.
In
X-Y operation, this control provides step adjustment
of
horizontal sensitivity.
(])
VARIABLE Control
Rotation provides fine control
of
channel 2 vertical
sensitivity. In the fully clockwise (CAL) position, the
vertical attenuator is calibrated.
In
X-Y operation, this
control becomes the fine horizontal gain control.
@ AC-GND-DC
Three-position lever switch which operates
as
follows:
AC: Blocks
de
component
of
channel 2 input
signal.
GND: Opens signal path and grounds input
to
ver-
tical amplifier. This provides a zero-signal base
line,
the
position
of
which can
be
used
as
a
reference when performing
de
measurements.
DC: Direct input
of
ac
and
de
component
of
chan-
nel 2 input signal.
@ INPUT Jack
Vertical input
for
channel 2 trace in normal sweep
operation. External horizontal input in
X-
Y operation.
@ CH21NV
In
the
NORM position (button released), the channel 2
signal is non-inverted.
In
the
INV position (button
engaged).
the
channel 2 signal is inverted.
(jJ)
• POSITION, X-Y
.......
Rotation adjusts vertical position
of
channel 2 trace.
In
X-Y operation adjusts horizontal position
of
display.
CS-1020,
1010
@ AC-GND-DC
Three-position lever
switch
which operates
as
follows;
AC: Blocks de component
of
input signal.
GND: Opens signal path and grounds input
to
vertical
amplifier. This provides a zero-signal base line,
the
position
of
which can
be
used
as
a
reference when performing
de
measurements.
DC: Direct input
of
ac and
de
component
of
input
signal.
@ INPUT Jack
Vertical input and vertical input
for
X-Y operation.
9
10
®®
CS-1022,
1021,
1012
(j)
!!
..
® !
CS-1022,
1021,
1012
@
MODE
Five-po&ition push switch; selects the basic operating
modes
of
the oscilloscope.
CH1: Only the input signal
to
channel 1 is
displayed
as
a single trace.
CH2: Only the input signal
to
channel 2
is
displayed
as
a single trace.
ADD: When both
CH1
and CH2 buttons
are
!CH1+CH2l engaged, the waveforms from channel 1
and channel 2 inputs
are
added and the
sum
is
displayed
as
a single trace. When
the
CH2 INV ® button
is
engaged, the
waveform from channel 2
is
subtracted
from the channel 1 waveform and the dif-
ference
is
displayed
as
a single trace.
ALT: Alternate sweep
is
selected regardless
of
sweep time.
CHOP: Chop sweep
is
selected regardless
of
sweep time at approximately
250kHz.
@ POWER, SCALE ILLUM (Except
CS
-1021 l
Fully counterclockwise rotation
of
this control
(OFF
position) turns
off
oscilloscope. Clockwise rotation
turns on oscilloscope. Further clockwise rotation
of
the control increases the illumination level
of
the scale.
(jJ)
PILOT Lamp
Lamp Lights when oscilloscope is turned on.
....
!: ®
-....-..;c.,---®
::
@
:~
®
Fig. 4
CS-1020,
1010
@ POWER, SCALE ILLUM
Fully counterclockwise rotation
of
this control
(OFF
position) turns
off
oscilloscope. Clockwise rotation
turns on oscilloscope. Further clockwise rotation
of
the control increases the illumination level
of
scale.
(jJ)
PILOT Lamp
Lights when oscilloscope
is
turned on.
CS-1022,
1021,
1012
@ GND terminal/binding post.
Earth and chassis ground.
@
PROBE
ADJ.
Provides approximately 1 kHz, 0.5
Volt
peak-to-peak
square
wave
signal. This is useful
for
probe compen-
sation adjustment.
@ TRACE ROTATION
Electrically rotates trace
to
horizontal position.
Strong magnetic fields may cause
the
trace
to
be
tilted.
The degree
of
tilt
may vary
as
the scope is moved
from one location
to
another.
In
these cases, adjust
this control.
@ FOCUS
Adjusts the trace for optimum focus.
@ INTENSITY
Clockwise rotation
of
this control increases the
brightness
of
the trace.
@ ASTIG
Astigmatism adjustment provides optimum spot
roundness when used in conjunction
with
FOCUS and
INTENSITY controls. Very little readjustment
of
this
control
is
required after initial adjustment.
@ EXT TRIG INPUT Jack
Input terminal for external trigger signal.
When SOURCE
switch
is selected in EXT position, the
input signal
at
the EXT
TRIG
INPUT jack becomes the
trigger.
@ LEVEL/PULL
SLOPE
I- )
LEVEL:
Trigger level adjustment determines point
on
waveform
where sweep starts.
When COUPLING
switch
is selected in
VIDEO-FRAME or
LINE,
the trigger level
ad
-
justment
has no
effect.
SLOPE:
+equals
most
positive point
of
triggering
and
-equals
most
negative point
of
trigger-
ing. Push-pull
switch
selects positive or
negative slope.
Sweep is triggered on negative-going slope
of
sync
waveform
with
switch
pulled out.
CS-
1020,
1010
@ GND terminal/binding post.
Earth and chassis ground.
@ PROBEADJ.
Provides approximately 1 kHz, 0.5 Volt peak-to-peak
square
wave
signal. This is useful for probe compensa-
tion adjustment.
@ TRACE ROTATION
Electrically rotates trace
to
horizontal position.
Strong magnetic fields may cause the trace
to
be
tilted.
The degree
of
tilt
may vary
as
the scope is moved from
one location
to
another.
In
these cases, adjust this
control.
@ FOCUS
Adjusts the trace for optimum focus.
@)
INTENSITY
Clockwise rotation
of
this control increases the
brightness
of
the
trace.
@ ASTIG
Astigmatism
adjustment provides optimum spot
roundness when used in conjuction
with
FOCUS and
INTENSITY controls. Very little readjustment
of
this
control is required after initial adjustment.
@ EXT TRIG INPUT Jack
Input terminal
for
external trigger signal and external
horizontal input terminal for X-Y operation.
When
SOURCE
switch
is selected in EXT position, the
input signal at
the
EXT TRIG INPUT jack becomes the
trigger.
@ LEVEL/
PULL
SLOPE
(- )
LEVEL:
Trigger level adjustment determines point
on
waveform
where sweep starts.
When COUPLING
switch
is
selected in
VIDEO-FRAME or
LINE,
the trigger level
ad
-
justment has no effect.
SLOPE
:
+equals
most
positive point
of
triggering
and
-e
quals
most
negative point
of
trigger-
ing. Push-pull
switch
selects positive or
negative slope. Sweep
is
triggered
on
negative-going slope
of
sync waveform
with
switch
pulled out.
11
12
®®
CD
CS-1022,
1021,
1012
Fig
. 5
CS-1022,
1021,
1012
@
COUPLING
Three-position lever switch; selects coupling
for
sync
trigger signal.
AC: Trigger is ac coupled. Blocks
de
component
of
input signal;
most
commonly used posi-
tion.
VIDEO
FRAME: Vertical sync pulses
of
a composite video
signal
are
selected
for
triggering.
VIDEO
LINE
:
@
SOURCE
Horizontal sync pulses
of
a composite video
signal
are
selected for triggering. The
LINE
position
is
also used for
all
non-video
waveforms.
Five-position lever switch; selects triggering source
for
the sweep,
with
following positions;
V. MODE: The trigger source
is
determined by ver-
tical MODE selection.
CH1: C)lannel 1 signal
is
used
as
a trig-
ger source.
CH2: Channel 2 signal
is
used
as
a trig-
ger source.
ADD: The algebraic sum
of
channel 1
and channel 2 signal is the trigger
source. (If CH2 INV engaged, the
difference becomes the trigger
source.)
CS-1020,
1010
@
COUPLING
Three-position lever switch; selects coupling for sync
trigger signal.
AC: Trigger
is
ac coupled. Blocks
de
component
of
input signal; most commonly used posi-
tion.
VIDEO
FRAME: Vertical sync pulses
of
a composite video
signal
are
selected for triggering.
VIDEO
LINE
:
@
SOURCE
Horizontal sync pulses
of
a composite video
signal
are
selected for triggeri
ng
. The
LINE
position
is
also used
for
all
non-video
waveforms.
Three-position lever
switch
; selects triggering source
for
the sweep,
with
following positions;
INT: Waveform being observed
is
used
as
sync
trigger.
LINE
:
Sweep
is
triggered
by
line
voltage
(50/60Hz)
.
EXT: Sweep
is
triggered by signal applied
to
EXT
TRIG
INPUT jack @ .
CS-1022.
1021
,
1012
CHOP:
The display cannot
be
synchroniz-
ed
with
the input signal since the
chopping signal becomes the trig-
ger source.
CH1: Sweep is triggered by channel 1 signal
regardless
of
vertical MODE selection.
CH2: Sweep is triggered by channel 2 signal
regardless
of
vertical MODE selection.
LINE
: Sweep is triggered
by
line voltage
(50/60Hz)
.
EXT: Sweep is triggered by signal applied'
to
EXT
TRIG
INPUT jack ® .
@
TRIG
MODE
Three-position lever switch; selects triggering mode.
AUTO: Triggered sweep operation when trigger
signal is present, automatically generates
sweep (free runs) in absence
of
trigger
signal.
NORM: Normal triggered sweep operation.
No
trace is presented when a proper trigger
signal
is
not applied.
X-Y: X-Y operation. Channel 1 input signal pro-
duces vertical deflection
(Y
axis). Channel
2 input signal produces horizontal deflec-
tion (X axis).
This operates regardless vertical
MODE
selection.
@ VARIABLE Control
Fine
sweep time adjustment.
In
the fully clockwise
(CALl position, the sweep time
is
calibrated.
@
SWEEP
TIME/DIY
Horizontal coarse sweep time selector.
Selects calibrated sweep times
of
0.2
¢>/div
to
0.5
s/
div
in
20
steps (CS-1021, CS-1012...
0.5
¢>/div
to
0.5
s/div in 19 steps) when sweep time VARIABLE
control @
is
set
to
CAL position (fully clockwise).
@
..,..,.
POSITION,
PULL
x
10
MAG
Rotation adjusts horizontal position
of
trace. Push-pull
switch selects x
10
magnification
(PULL
x 10 MAGI
when pulled out; normal when pushed in.
CS-1020.
1010
@
TRIG
MODE
Three-position lever switch; selects triggering mode.
AUTO: Triggered sweep operation when trigger
signal
is
present, automatically generates
sweep (free runs)
in
absence
of
trigger signal.
NORM: Normal triggered sweep operation.
No
trace
is
presented when a proper trigger signal is not
applied.
X-
Y:
X-Y operation. Vertical input signal produces
vertical deflection
(Y
axis).
EXT
TRIG
input
produces horizontal deflection
(X
axis).
@ VARIABLE Control
Fine
sweep time adjustment.
In
the fully clockwise
(CAL) position, the sweep time is calibrated.
For X-Y operation, this control serves
as
the X axis
gain adjustment.
@
SWEEP
TIME/DIY
Horizontal coarse sweep time selector.
Selects calibrated sweep times
of
0.2 ¢>/div
to
0.5 s/div
in
20
steps
(CS
-
1010
.
..
0.51'5/div
to
0.5 s/div in 19 steps) when sweep time VARIABLE
control @
is
set
to
CAL position (fully clockwise).
@
..,..,.
POSITION,
PULL
x
10
MAG
Rotation adjusts horizontal position
of
trace.
Push
-pull
switch selects x 10 magnification
(PULL
x 10 MAGI
when pulled
out
; normal when pushed in.
For X-Y operation, this control serves
as
the X axis
position control.
13
..,. Z.Altl
IIIPVT
..
..
..........
"'
CAUTION
fOil
COITUIUID
P'MllCY*
AIA
..
Il
fl.l
. M"-ACI
.,
WITM
Hill
Of
TMI
SPlctfffD
VOI.TAIE
AH
CUIMIIT
W,_
,
IIICHMCT
,_.II
IUI"ll
llfOM
111"-ACIII
FUI£
ili"'li
~
..
Fig
. 6
REAR PANEL
CS-1022,
1021,
1012
@ Z AXIS INPUT
External intensity modulation input; TTL compatible.
Positive voltage increases brightness, negative
voltage decreases brightness.
®
CH1
OUTPUT (Except
CS
-1
021)
CH1
vertical output signal connector.
AC coupled
output
connector.
This connector
is
used
to
measure the frequency by
connecting
the
frequency counter. For stable opera-
tion, do
not
connect
CH1
OUTPUT
to
channel 2 input
as
cascaded operation.
® Fuse Holder
Contains the line fuse. Verify
that
the proper fuse
is
installed when replacing the line fuse.
100
V,
120
V
.............
0.8A
220
V,
240
V
.............
0.5A
14
..
........
,
..
=~:
..
DO
lOT
IIIMOYf
,
.....
MfUI
JliiYICMM
TO
QUAUFilD
I'IIIICHflll.
® Z AXIS INPUT
CS-1020,
1010
External intensity modulation input; TTL compatible.
Positive voltage increases brightness, negative
voltage decreases brightness.
®
VERT
OUTPUT
Vertical output signal connector.
AC coupled output connector.
This connector
is
used
to
measure the frequency by
connecting the frequency counter.
® Fuse Holder
Contains the line fuse. Verify that proper fuse
is
in-
stalled when replacing the line fuse.
1
OOV,
120V
...............
0.8A
220V,
240V
...............
0.
5A
---
OPERATION
INITIAL STARTING PROCEDURE
Until you familiarize yourself
with
the use
of
all
controls,
the following procedure may
be
used
to
standarize the in-
itial setting
of
controls
as
a reference point and
to
obtain
5V/div
---
..
.
.-
·~-
CAL
I
.•
.
It
. .
·-
AC
CENTER
5V/div
a•
·a
~
CAL
.
.....
AC
CENTER
1\
,..,. '
-:;
CS-1022,
1021,
1012
(1) NORMAL SWEEP DISPLAY OPERATION
1. Turn the
POWER
control @ clockwise -the power
supply will
be
turned on and
the
pilot lamp will light.
Set these modes
as
follows;
MODE
@ :
CH1
TRIG
MODE ® : AUTO
2. The trace will appear in the center
of
the
CRT
display
and can
be
adjusted
by
the
CH
1
~
POSITION
CD
and
~.,._
POSITION @ controls. Next, adjust the INTENSI-
TY @ and,
if
necessary, the FOCUS @ for
ease
of
observation.
3.
Vertical Modes
With
vertical MODE @ set
to
CH
1, apply an input
signal
to
the
CH1
INPUT @ jack and adjust the
VOLTS/DIV ® control
for
a suitable size display
of
the
waveform. If the waveform does
not
appear
in
the
display, adjust the VOLTS/DIV and
~
POSITION controls
to
bring the waveform into the center portion
of
the
CRT
display. Operation
with
a signal applied
to
the CH2 IN-
PUT ® jack
and
the vertical MODE set
to
CH2
is
similar
to
the above procedure.
---
..
-
..
Fig. 7
trace
on
the
CRT
in preparation
for
waveform observation.
When using the probe(s), refer
to
probe's instructions
and
"PROBE COMPENSATION" listed in APPLICATION
of
this
manual.
---
-
I!
CENTER
,
PUSH
l~
··dl
l
1ms
/
div
CAL
AUTO
CS
-1022, 1012
V.
MODE
•
---
l!
AC
CS
-1020,1010
INT
CENTER,
PUSH
CENTER CENTER
CS-1020,
1010
(1) NORMAL SWEEP DISPLAY OPERATION
1. Turn the
POWER
control @
clockwise-the
power
supply will
be
turned on and the pilot lamp will light. Set
the
TRIG
MODE @
to
AUTO position.
2. The trace will appear
in
the
center
of
the
CRT
display
and can
be
adjusted by the
~
POSITION
CD
and
~.,._
POSITION @ controls. Next, adjust the INTENSITY
@ and, if necessary, the FOCUS @ for
ease
of
observation.
3. Apply
an
input signal
to
INPUT @ jack and adjust the
VOLTS/DIV ® control
for
a suitable
size
display
of
the
waveform.
If
the waveform does not appear
in
the
display, adjust the VOLTS/DIV and
~
POSITION controls
to
bring the waveform into the center portion
of
the
CRT
display.
4.
If
no trace
is
obtainable, refer
to
the following
TRIGGER-
ING
procedures.
The display on the screen will probably
be
unsynchroniz-
ed.
Refer
to
TRIGGERING procedures below adjusting syn-
chronization and sweep speed
to
obtain a stable display
showing the desired number
of
waveforms.
TRIGGERING
The input signal must
be
properly triggered for stable
waveform observation. TRIGGERING
is
possible the input
In
the ADD mode, the algebraic sum
of
CH1
+CH2
is
displayed.
If
the CH2 INV ®
switch
has been engag-
ed,
the algebraic difference
of
the
two
waveforms,
CH1
-CH2 is displayed. If both channels
are
set
to
the
same VOLTS/DIV, the sum or difference can be
read
directly
in
VOLTS/DIV from the CRT. In the ALT mode, ' signal INTernally
to
create a trigger or
with
an
EXTernally
15
16
'
CS
_-1()22.
1021.
1012
one sweep displayes the channel 1 signal and the next
sweep displays the channel 2 signal
in
an
alternating
se-
quence.
In
the CHOP mode, the sweep
is
chopped at
an
approx-
imate
250
kHz rate and switched between
CH1
and
CH2. Note
that
in
the CHOP mode
of
operation
with
the
SOURCE
switch
set
to
V. MODE, the trigger source
becomes the chopping signal itself, making waveform
observation impossible. Use
AL
T mode instead
in
such
cases, or select a trigger
SOURCE
of
CH1
or CH2.
If
no trace
is
obtainable, refer
to
the following
TRIGGER-
ING
procedures.
4.
After
setting the
SOURCE
switch,
adjust the
SLOPE
control.
The display on
the
screen will probably
be
unsynchroniz-
ed. Refer
to
TRIGGERING procedure below
for
adjusting
synchronization and sweep speed
to
obtain a stable
display showing the desired number
of
waveform.
TRIGGERING
The input signal must
be
properly triggered
for
stable
waveform observation. TRIGGERING
is
possible the input
signal INTernally
to
create a trigger or
with
an
EXTernally
provided signal
of
timing relationship
to
the observed
signal, appliying such a signal
to
the EXT
TRIG
INPUT jack.
The
SOURCE
switch
selects the input signal
that
is
to
be
used
to
trigger the sweep,
with
INT sync possibilities
(V.MODE, CH1, CH2,
LINE)
and EXT sync possibility.
* Internal Sync
When the
SOURCE
selection is
in
INT (V.MODE, CH1,
CH2, LINE), the input signal
is
connected
to
the internal
trigger circuit.
In
this position, a part
of
the input signal fed
to
the INPUT @ or ® jack
is
applied from the vertical
amplifier
to
the trigger circuit
to
cause the trigger signal
triggered
with
the input signal
to
drive the sweep.
When the V.MODE position
is
selected, the trigger source
is
dependent upon the vertical MODE selection.
When the vertical MODE selection
is
in
AL
T, the
AL
T posi-
tion
is
very convenient for measuring the time duration
of
the waveform. However, for phase or timing comparisons
between the channel 1 and channel 2 waveforms, both
traces must
be
triggered by the same sync signal.
When the SOURCE selection is in CH1, the input signal at
the channel 1 INPUT @ jack becomes trigger regardless
of
the position
of
vertical MODE. When the
SOURCE
selection
is
in CH2, the input signal at the channel 2 INPUT ® jack
becomes trigger regardless
of
the position
of
vertical
MODE. When the
SOURCE
selection in
LINE,
the ac line
voltage powering the oscilloscope
is
used
as
sync trigger-
ing.
* Enternal Sync
When the SOURCE selection
is
in EXT, the input signal
at
the EXT
TRIG
INPUT ® jack becomes the trigger. This
signal must have a time or frequency relationship
to
the
CS-1020.
1010
provided signal
of
timing relationship
to
the observed
signal, applying such a signal
to
the EXT
TRIG
INPUT jack.
The
SOURCE
switch
selects the input signal
that
is
to
be
used
to
trigger the sweep,
with
INT sync possibility and
EXT sync possibility.
* Internal Sync
When the
SOURCE
selection
is
in
INT, the input signal
is
connected
to
the internal trigger circuit.
In
this position, a
part
of
the input signal fed
to
the INPUT @ jack
is
applied
from the vertical amplifier
to
the trigger circuit
to
cause the
trigger signal triggered
with
the input signal
to
drive the
sweep.
When the
SOURCE
selection
is
in
LINE,
the
ac
line voltage
powering the oscilloscope is used
as
sync triggering.
* External Sync
When the
SOURCE
selection
is
in
EXT, the input signal at
the EXT
TRIG
INPUT ® jack becomes the trigger. This
signal must have a time
or
frequency relationship
to
the
signal being observed
to
synchronize the display. External
sync
is
prefered for waveform observation
in
many applica-
tions. For example, Fig. 8 shows
that
the sweep circuit
is
driven by the gate signal when the gate signal
in
the burst
signal
is
applied
to
the EXT
TRIG
INPUT jack. Fig. 8 also
shows the input/output signals, where the burst signal
generated from the gate signal
is
applied
to
the instrument
under test. Thus, accurate triggering can
be
achieved
without
regard
to
the input signal fed
to
the INPUT @ jack
so
that
no
further triggering
is
required even when the input
signal
is
varied.
_j
I I
I I
I I
-fJ\!W--
: :
I I
I I
I I
I I
I I
~
II
Fig. 8
Trigger signal
(Gate signal)
Input signal
to
amplifier, etc.
Output signal from
amplifier, etc.
CS-1022,
1021.
1012
signal being observed
to
synchronize the display. External
sync is prefered
for
waveform
observation in many applica-
tions. For example, Fig. 8
shows
that
the sweep circuit is
driven by the gate signal when
the
gate signal in
the
burst
signal is applied
to
the
EXT
TRIG
INPUT jack. Fig. 8 also
shows
the
input/output
signals, where
the
burst signal
generated from
the
signal is applied
to
the
instrument under
test. Thus, accurate triggering can
be
achieved
without
regard
to
the input signal fed
to
the
INPUT ® or ® jack
so
that
no further triggering is required even when
the
input
signal is varied.
_j
I
I
I
~
::
I I
I I
I I
I I
I I
~
II
Fig.
8
* Triggering Level
Trigger signal
(Gate signal)
CH
1 (Input signal
to
amplifier, etc.)
CH2 (Output signal
from
amplifier, etc.)
Trigger point on
waveform
is adjusted by
the
LEVEL/PULL
SLOPE
@ control. Fig. 9 shows the relationship between
the
SLOPE
and
LEVEL
of
the trigger point. Triggering level
can
be
adjusted
as
necessary.
SLOPE
"-"
RANGE
~S9
"+"
RA~E
+
lVEl
Fig.
9
*
Auto
Trigger
When
the
TRIG
MODE ® selection is in AUTO, the
sweep circuit becomes free-running
as
long
as
there
is
no
trigger signal, permitting a check
of
GND level. When a trig-
ger signal is present,
the
trigger point can
be
determined by
the
LEVEL
control for observation
as
in
the
normal trigger
signal. When the trigger level exceeds the limit,
the
trigger
circuit also becomes free-running where the
waveform
starts running. When
the
LEVEL
control is pushed in and/or,
when
the
trigger signal is absent or
the
triggering level ex-
ceeds
the
limit, there is no sweep.
CS-
1020,
1010
* Triggering Level
Trigger point on
waveform
is adjusted by the LEVEUPULL
SLOPE
@ control. Fig. 9 shows the relationship between
the
SLOPE
and
LEVEL
of
the
trigger point. Triggering level
can
be
adjusted
as
necessary.
SLOPE
"-"
RANGE
~S9'+RANGE
+
l~El
Fig. 9
*
Auto
Trigger
When the
TRIG
MODE ® selection is in AUTO, the
sweep circuit becomes free-running
as
long
as
there is no
trigger signal, permitting a check
of
GND level. When a trig-
ger signal is present, the trigger point can
be
determined by
the
LEVEL
control
for
observation
as
in the normal trigger
signal. When the trigger level exceeds the limit, the trigger
circuit also becomes free-running where the waveform
starts running. When the
LEVEL
control
is
pushed
in
and/or,
when the trigger signal is absent or
the
triggering level ex-
ceeds the limit, there
is
no sweep.
17
18
CS-1022,
1021,
1012
(2) MAGNIFIED SWEEP OPERATION
Since merely shortening the sweep
time
to
magnify a por-
tion
of
an
observed
waveform
can result in the desired por-
tion disappearing
off
the
screen, such magnified display
should
be
performed using
the
MAGNIFIED
SWEEP.
Using
the
.,.~
POSITION control, adjust the desired portion
of
waveform
to
the
CRT. Pull
out
the
PULL x 10
MAG
con-
trol
to
magnify
the
display 10 times. For this
type
of
display the sweep
time
is the SWEEP TIME/DIV setting
divided by
10.
(3) X-Y OPERATION
For some measurements,
an
external horizontal deflection
signal is required. This
is
also referred
to
as
an
X-Y
measurement, where the Y input provides vertical deflec-
tion and X input provides horizontal deflection.
X-Y operation permits the oscilloscope
to
perform many
types
of
measurements not possible
with
conventional
sweep operation. The CRT display becomes an electronic
graph
of
two
instantaneous voltages. The display may
be
a
direct camparison
of
two
voltages such
as
during phase
measurement, frequency measurement
with
Lissajous
waveforms.
To use
an
external horizontal input, use the following pro-
cedure;
1. Set
the
TRIG
MODE
switch
to
X-Y
the
position.
2. Use the channel 1 probe
for
the
vertical input and the
channel 2 probe
for
the horizontal input.
3. Adjust
the
amount
of
horizontal deflection
with
the CH2
VOLTS/DIV and VARIABLE controls.
4. The CH2 (vertical) POSITION
(j])
control
now
serves
as
the horizontal position control, and the
~
POSITION
control is disabled.
5. All sync controls are disconnected and have no effect.
(4) VIDEO SIGNAL OBSERVATION
The VIDEO FRAME/LINE
switch
permits selection
of
ver-
tical or horizontal sync pulse
for
sweep triggering when
viewing composite video waveforms.
In
the
LINE
position,
horizontal sync pulses are selected
as
triggers
to
permit
viewing
of
horizontal line
of
video. This
is
also
the
position
used
for
viewing all non-video waveforms.
In
the
FRAME
position, vertical sync pulses are selected
as
triggers
to
permit viewing
of
vertical fields and frames
of
video. When
observing the video waveforms, stable display
is
obtained
on
the
screen regardless the TRIG
LEVEL
@ control.
At
most
points
of
measurement, a composite video signal
is
of
the polarity,
that
is, the
sync
pulses
are
negative and
the video is positive.
In
this case, use "
-"
SLOPE.
If
the
waveform
is taken at a circuit point where the video
waveform
is inverted, the sync pulses are positive and the
video is negative.
In
this case, use
"+"
SLOPE.
CS-1020.,1010
(2) MAGNIFIED SWEEP OPERATION
Since merely shortening the sweep time
to
magnify a por-
tion
of
an
observed waveform can result in the desired por-
tion disappearing
off
the screen, such magnified display
should
be
performed using
the
MAGNIFIED
SWEEP.
Using the
.,.~
POSITION control, adjust the desired portion
of
waveform
to
the
CRT
. Pull
out
the PULL x
10
MAG con-
trol
to
magnify the display 10 times. For this type
of
display the sweep time is the
SWEEP
TIME/DIV setting
divided by 10.
(3) X-V OPERATION
For some measurements,
an
external horizontal deflection
signal is required. This is also referred
to
as
an
X-Y
measurement, where Y input provides vertical deflection
and the X input provided horizontal deflection. The horizon-
tal input may
be
a sinusoidal wave, such
as
used for phase
measurement, or
an
external sweep voltage. This input
voltage
must
be
about 1
00
millivolts per division
of
deflec-
tion (usually 1
volt
or more peak-
to
-peak will provide
satisfactory results). X and Y positions are ajusted using
the
.,.~
POSITION @ and
~
POSITION
CD
controls
respectively. To use
an
external horizontal input, use the
following procedure.
1. Set the
TRIG
MODE
switch
to
the X-Y position.
2. Connect
the
external horizontal signal source through a
cable
to
the
EXT
TRIG
INPUT jack.
3. Adjust
the
amount
of
horizontal deflection
with
the
VARIABLE control, which adjusts the gain
to
the
horizontal amplifier.
4. All sync contol are disconnected and have no effect.
(4) VIDEO SIGNAL OBSERVATION
The VIDEO FRAME/LINE
switch
permits selection
of
ver-
tical or horizontal sync pulse for sweep triggering when
viewing composite video waveforms.
In
the
LINE
position,
horizontal sync pulses are selected
as
triggers
to
permit
viewing
of
horizontal line
of
video. This is also the position
used for viewing
all
non-video waveforms.
In
the FRAME
position, vertical sync pulses
are
selected
as
triggers
to
permit viewing
of
vertical fields and frames
of
video. When
observing
the
video waveforms, stable display
is
obtained
on the screen regardless the
TRIG
LEVEL
® control.
At
most points
of
measurement, a composite video signal
is
of
the polarity,
that
is, the sync pulses are negative and
the video is positive.
In
this case, use
"-
"
SLOPE.
If the
waveform
is taken at a circuit point where the video
waveform is inverted, the sync pulses
are
positive and
the
video is negative.
In
this case, use "
+"
SLOPE
.
APPLICATION
PROBE
COMPENSATION
If accurate measurements are
to
be
made, the
effect
of
the
probe being used must
be
properly adjusted output
of
the
measurement system using the internal calibration signal or
some other squarewave source.
1. Connect probe
to
INPUT jack. Connect ground clip
of
probe
of
oscilloscope ground terminal
and
touch
tip
of
probe
to
PROBE
ADJ
terminal.
2. Select single trace operation
of
channel 1, then channel
2, for step 3 and
4.
(Unapplied
to
CS
-1
020
and
CS
-
1010
.)
Set the probe for 10:1 attenuation (10 x position) and
VOLTS/DIV
to
1OmV/div.
3. Set oscilloscope controls
to
display 3 or 4 cycles
of
PROBE
ADJ square wave at 5 or 6 divisions amplitude.
4. Adjust compensation trimmer on probe
for
optimum
square wave waveshape (minimum overshoot, rounding
off,
and
tilt).
1
:t_
_
_j
j t t I J J 1 l j
;~~:
~
~sation
r--
~
roo;-
Over
I•
,,
I•
,,
I•
,, ,
I•
,,•I '••
I•
••
I•
•••
I•
•••
I•
•• I ••
•I
compensation
I I
~
I
~
I
~
I
lr-
I
llnsuffic
ient.
compensation
10•
-
--
Fig.
10
TRACE ROTATION COMPENSATION
Rotation from a horizontal trace position can
be
the cause
of
measurement errors.
Adjust the controls for a single display. Set the AC-GND-
DC
switch
to
GND and
TRIG
MODE
to
AUTO. Adjust the
~
POSITION control such
that
the trace
is
over the center
horizontal graticule line.
If
the trace appears
to
be
rotated
from horizontal, align
it
with
the center graticule line using
the TRACE ROTATION control located on the front panel.
DC
VOLTAGE MEASUREMENTS
This procedure describes the measurement procedure for
DC
waveforms.
Procedure:
1. Connect the signal
to
be measured
to
the INPUT
jack.Set the vertical MODE
to
the channel
to
be
used
(unapplied
to
CS
-1
020
and 1010). Set the VOLTS/DIV
and
SWEEP
TIME/DIV
switch
to
obtain a normal display
of
the waveform
to
be
measured. Set the VARIABLE
control
to
the CAL position.
2. Set the
TRIG
MODE
to
AUTO and AC-
GND
-
DC
to
the
GND
position, which established the zero volt reference.
Using the
~
POSITION control, adjust the trace position
to
the desired reference level position, making sure not
to
disturb this setting once made.
3. Set the AC-GND-
DC
switch
to
the
DC
position
to
observe the input waveform, including its
DC
compo-
nent. If
an
appropriate reference level or VOLTS/DIV
setting was
not
made, the waveform may not
be
visible
on the
CRT
screen at this point. If so, reset VOLTS/DIV
and/or the
~
POSITION control.
4.
Use
the
..,..,..
POSITION control
to
bring the portion
of
the waveform
to
be
measured
to
the center vertical
graduation line
of
the CRT screen.
5. Measure the vertical distance from the reference level
to
the point
to
be
measured, (the reference level can
be
rechecked by setting the AC-GND-
DC
switch
again
to
GND).
Multiply
the
distance measured above
by
the
VOLTS/DIV setting and the probe attenuation ratio
as
well. Voltages above and below the reference level
are
positive and negative values respectively.
Usi
ng
the formula:
DC
level = Vertical distance in divisions x (VOLTS/DIV set-
ting) x (probe attenuation ratio).
..--
Measuring point adjusted
to
the
ce
n
100
\ vertic
al
scale
by
.,..,.
POSITION
10
---
---
----
_.\
---
----
--- --------
---·
er
r--,
\ r n
..
_
--
-
~
...
1-
r-~
'tl
::>
10
---
---
1--
------ --
1-
-
...._
r-
--·
I
'--
Ground potenti
al
adjusted by
•
POSITION
(reference line)
Fig
.
11
[EXAMPLE]
For the example, the point being measured
is
3.8 divisions
from the reference level (ground potential).
If
the VOLTS/DIV was set
to
0.2
V and a
10
:1 probe was
used.
(See
Fig
. 11)
Substituting the given values:
DC
level = 3.8 (div) x
0.2(V)x
10
=
7.6
V
19
MEASUREMENT
OF
THE VOLTAGE BETWEEN
TWO
POINTS
ON
A WAVEFORM
This technique can
be
used
to
measure peak-to-peak
voltages.
Procedure:
1. Apply the signal
to
be
measured
to
the
INPUT jack. Set
the vertical MODE
to
the channel
to
be
used (unapplied
toCS
-
1020and
1010)
.
SettheAC-GND-DCtoAC,
ad
-
justing VOLTS/DIV and
SWEEP
TIME/DIV for a normal
display. Set the VARIABLE
to
CAL.
2. Using the
~
POSITION control, adjust the
waveform
position such
that
one
of
the
two
points falls on a CRT
graduation line and
that
the other is visible on the
display screen.
3. Using the
..,..,..
POSITION control, adjust the second
point
to
coincide
with
the center vertical graduation line.
4. Measure the vertical distance between the
two
points
and multiply this
by
the
setting
of
the VOLTS/DIV con-
trol.
If
a probe is used, further multiply this by the attenua-
tion ratio.
Using
the
formula:
Volts Peak-
to
-Peak
=Vertical distance (div) x (VOLTS/DIV setting) x (probe
attenuation ratio)
Ill
E
g-8.
..
0
ti
~
:.0
...
-
c:
..
.,
u
.,
·e
~
~]
Adjust
to
the center
vertical scale
with
POSITION
I
100
10
''7"""\ --- ---- ---
\
.\
\ I
\ I
J
---
---
~
-
v-
J
1\
--
)
I
v
--
-
1\
Points
to
b asured
I \
K-
--
-
~-
--------
IT"\
\ \ I
\ \ I
---
\ I
\
I\
I
-
~
ri-'J
--
---
I ontal
scale
with
• POSITION.
Fig.
12
[EXAMPLE]
For the example,
the
two
points are separated by
4.4
divi-
sions vertically. Set
the
VOLTS/DIV setting
be
0.2 V/div
and the probe attenuation
be
10
:1. (See Fig. 12)
Substituting the given value:
Voltage between
two
points=
4.4
(div) x0.2(V) x 10 =
8.8V
20
ELIMINATION
OF
UNDESIRED SIGNAL
COMPONENTS (Unapplied to
CS-1020
and
1010)
The ADD feature can
be
conveniently used
to
cancel out
the
effect
of
an
undesired signal component which
superimposed on the signal you wish
to
observe.
Procedure:
1. Apply
the
signal containing
an
undesired component
to
the
CH
1 INPUT jack and the undesired signal itself alone
to
the CH2 INPUT jack.
2. Set the vertical MODE
to
CHOP and
SOURCE
to
CH2.
Verify
that
CH2 represents the unwanted signal in
reverse polarity.
If
necessary reverse polarity by setting
CH2
to
INV.
3. Set the vertical MODE
to
ADD,
SOURCE
to
V. MODE
and CH2 VOLTS/DIV and VARIABLE
so
that
the
undesired signal component is cancelled
as
much
as
possible. The remaining signal should
be
the signal you
wish
to
observe alone and free
of
the
unwanted signal.
0
100
!10
o~n~
\
::
r
I
....
t
---
~~
\ \
~~
::r_
.......
---
----
~""-·
I
-~
\ \ \
\U~
-V
.\
l 1
'1
-
~V.
1
,"
,.
0
---
0
....
~
.I..._
.
11
,,
''
....
'
---
--- ---
---
---
---
---
--
---·
Signal containing undesired component
(Broken lines: undesired component envelope)
~:t_
_
_l
J t t I 1 J I t J
......
l\
lrTI
t I
I/
J 1 J .
I/
\
ll
·
'\i
···
v
10
....
-
--
....
---
~
---
·
---
~
---
· -
__
..,.
___
.,_
___
._-
-
....
_
--
Undesired component signal
This manual suits for next models
4
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