Hitachi V1050F (V 1050F) Oscilloscope Operating Guide Operation Manual Schematic Diagram H_V1050 H V1050
User Manual: H_V1050
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Model
V-1050
OSCI.... LLOSCOPE
,
.
OPERATION rYlANUAL
Contents
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
How to produce the bright line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Method for Connecting Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
( 1) When us ing a probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(2) When a di rect connect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(3) Caution for using the measured signal as an external
trigger signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Measuring Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(1) DC voltage measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(2) AC voltage measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(3) Period measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(4) Measurement of time difference . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . .
(5) Measurement of rise (fall) time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(6) Measurement of single-shot signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(7) Trigger of complexed waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(8) Phase shift between two signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(9) Measurement by X-Y operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(10) How to use TV exclusive synchronization . . . . . . . . . . . . . . . . . . . . . . . . . .
(11) Operating procedure of delayed sweep ., . . . . . . . . . . . . . . . . . . . . . . . . . . .
(12) How to use TRIG VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Panel Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
( 1) Power Supply and CRT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(2) Vertical deflection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(3) Horizontal defleqtion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(4) A triggering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(5) B triggering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(6) Miscellaneous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Users Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Panel Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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5
8
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49
I. Features
(7) Trigger view:
Hitachi Model V-1050 oscilloscope is a
Displays the selected internal or external
portable-type, advanced-class oscilloscope with
trigger signal.
a bandwidth of DC to 100 MHz Designed by putting
signal is selected, you can correlate the
If an external trigger
special emphasis on operability and ruggedness,
time between the trigger signal and input
this oscilloscope has the following features:
signals.
(1) Wide bandwidth:
The instrument has a bandwidth from DC to
100 MHz
2. Composition
(2) High sensitivity:
Sensitivity is 500
(8)Auto focusing
Focusing shift is automatically corrected.
Composition of Model V-1050 oscilloscope is
~V/div.
(3) Large 6" screen:
Employment of a large square CRT makes waveforms easier to observe.
(4) Internal graticule:
Employment of internal graticule CRT permits
waveforms observation to be made without
parallax error.
(5) TV synchronization:
as follows.
(1) Model V-1050 oscilloscope unit ............ 1
(2) Probe (AT-10AE 1.5) . . . . . . . . . . . . . . . . . . . . . . . 2
(3) Fuse (2A for 100V and l20V set
or lA for 220 and 240V set) ......... l
(4) Dust proof cover . . . . . . . . . . . . . . . . . . . . . . . . . . 1
(5) Sc.rew driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
(6) Power supply cord . . . . . . . . . . . . . . . . . . . . . . . . . l
(7) Operation ManuaL . . . . . . . . . . . . . . . . . . . . . . . . . 1
Employment of a new TV sync/separator
circuit allows instrument to observe TV
signals stably.
(6) Delayed sweep.
A portion of the signal can be magnified
before observation.
1
3. Precautions
such as a vase on the oscilloscope.
Precautions to be observed to lengthen the
*
service life of this instrument.
Do not place the instrument in a place where
vibration is strong. Avoid using the instrument at
a place vibrating violently. Since the oscillo-
C
o.
*
scope is a precision instrument, excessively
Avoide installing instrument in an extremely hot
or cold place.
.....
strong vibrations may cause damage.
*
o Avoid placing this instrument in a place
"-'"
Do not place the instrument near a magnet or
magnetic body. An oscilloscope is an equipment
exposed to sunlight for a long period of time,
using electron beam.
in a closed car in midsummer, or near a room
Therefore, do not bring a
magnet close to the instrument or do not use the
heating device such as a stove.
instrument near an equipment generating strong
o The operating maximum ambient temperature is
magnetic force.
50°C.
*
Do not use instrument that has been left outdoors
on a cold winter day. The operating ambient tem-
*
Do not put a heavy objects on the oscilloscope.
Do not block the ventillation holes.
*
*
Do not apply a heavy shock to the oscilloscope.
Do not insert a wire, pin, etc. through the
*
Do not drag the set, leaving the probe attached
*
Do not leave a hot soldering iron on the cabinet
perature is O°C or more.
*
Avoid moving the instrument rapidly from a hot
place to a cold place of vice versa, or condensation may form on inside of the instrument.
*
ventillation hole.
Keep the instrument away from damp air, water,
and dust. Unexpected trouble may be
cau~ed
when
the instrument is placed in a damp or dusty
place.
The operating ambient humidity is 35-85%. Since
an accidental instrusion of water may also cause
troubles, .do not place a water-filled containers
2
to it.
or the screen.
*
Do not try to turn the instrument upside down.
Otherwise, knobs may be broken.
*
Do not use the instrument upright, leaving BNC
C:,'
cable connected to EXT BLANKING, GATE OUT
PUT terminals on the rear panel.
NOTE: When opening the case, disconnect the power
Otherwise,
supply plug beforehand without fail.
the cable may be damaged.
When cleaning the inside, insure beforehand
that no electricity remains in the condensers
of the power supply circuit.
Recheck the operating procedure and if problem
persists, contact a nearly service station or
*
Cleaning of CRT
Dirty surface of CRT screen tends to cause measur-
agent.
ing errors.
Remove the stains on CRT and filter by using a
*
Removal of stain from the case.
clean and soft cloth, paying attention not to
o When the outside of the case is stained,
impair them.
When the stain is extremely heavy, wash them with
remove the stain by first wiping it lightly
with a cloth moistened with neutral washing
neutral washing agent and then leave them stand
agent and then wipe the surface with a dry
until the moisture is remov-ed naturally.
cloth.
o If the screen is installed while it is moistened,
water rings may be formed and the waveform may
o When the panel surface is stained, remove the
stain in similar way with a clean, soft cloth.
be blurred to become hard to observe.
Pay
When heavy stains are present, first remove
attention not to leave finger prints on it.
the stains by wiping the surface lightly with
a cloth moistened with diluted neutral washing
agent and then wipe thoroughly with a dry cloth.
o When dust has accumulated on the in side,
--,:-)
remove it by using a dry brush, or by using the
*
Check the line voltage.
The operating voltage range of this oscilloscope
is as shown below.
Check the line voltage without
fail before turning on the power switch.
exhaust of a compressor or a vacuum cleaner.
3
Rating
length.)
Line Voltage (50/60Hz)
AC100V
AC 90V - llOV
AC120V
AC108V - l32V
AC220V
AC198V - 242V
Shape
(Diameter x length)mm
AC2l6V - 264V
AC240V
Nominal volts
~5%
JIS type name
2A
6.35~
x 31. 8
MF61NM250V 2A AC
lA
6.35~
x
31.8
MF61NM250V lA AC
Do not increase the brightness too much.
In the case of normal shipment, the voltage
Do not increase the brightness of the spot and
selector will be set convenient for user up.
trace too much.
When it is intended to use the oscilloscope on
volt ages other rating, voltage selector can be
turned.
(Rated
are indicated on the
volt~ges
(' J
at 400Hz.
*
*
The standards if the fuses are as
follows.
Your eyes may be strained and the
fluorescent surface of CRT may be burnt.
*
Do no apply an excessive voltage.
The input withstand voltage of each in put con-
rear panel of the oscilloscope.)
nector and probe input is as follows.
Use only specified fuses.
a voltav,e higher than specified.
Never apply
In order to protect the circuit against overcurrent, a 2A (make use of ACIOOV or AC120V) or
lA (make use of AC220V or AC240V) is used on the
primary side of the power supply.
When this
fuse is below out, check thoroughly the cause,
repair any faulty point present, and then replace
with a. specified fuse.
Do not try to use the
fuse other than the specified ones.
Otherwise,
fault may be caused or danger may be invited.
(Particularly, do not use a fuse different from
the specified one in current capacity and in
4
INPUT
direct
When probe is used
EXT TRIG INPUT
EXT BLANKING
250V(DC + AC peak at 1 kHz)
500V(DC + AC peak at 1 kHz)
250V(DC + AC peak)
20V(DC + AC peak)
I Calibration Interval 1
To maintain jnstrument accuracy, perform the
calibration of the V-I050 at least every 1000
hours of operation, or every six months if
used infrequently.
(.•...::)
".
4. How to produce the bright line
Unless handled erroneously, this instrument
VAR HOLD OFF
MIN (full c.c.w.)
B TRIG MODE
AUTO
will never become faulty by ordinary operation.
Set all the levers of the switches either to
Before turning ON the POWER switch, insure
the power supply voltage is within the range of
l08V
~
the left side or to the upper side.
After ending all the settings mentioned above,
132V for AC 120V set, 198V - 242V for
AC 220V set, and 216V - 264V for AC 240V set.
turn ON the POWER. and, 15 seconds later, rotate
Refer to the indication on the rear panel of the
the INTENSITY knob clockwise.
instrument for other voltages.
bright line will appear.
If observation is to be started immediately,
Connect the plug of the power cord on the
rear panel into the power supply wall socket and
set the FOC(TS knob a.t a point where the bright
set the knobs as follows.
line is sharpest.
POWER/INTENSITY
If the instrument is not used with the power
IOFFI
th~
Midrange
supply turned on rotate
AC-GND-DC
GND
clockwise to reduce the brightness and also blur
HPOSITION
Midrange
FOC(TS
V.MODE
CHI
BW LIMIT 20MHz
Full bandwidth (button out)
D1SPLAY
A
INTENSITY counter-
the FOCUS.
INOTEI
For usual observation, leave the following
non-calibrating function section set to "CAL"
Midrange
position.
A TRIG MODE
AUTO
VARIABLE
A TRIG COUPING
AC
In this case the VOLTS/DIY is
A TRIG SOURCE
CHI
calibrated to its indicating value.
A TIME/DIV
O.5ms/DIV
B TIME/DIV
Arbitrary
~
-+-
<')
Then the sweep
POSITION
PULL SWP VAR
Rotate in the direction of arrow.
Push in the knob or rotate in the
direction of arrow. In this case
the TIME/DIV is calibrated to its
indicating value.
5
Align the bright line with the horizontal
line appears even when no signal is present or
scale line at the center of the screen by operat-
when AC-GND-DC switch js at GNP position.
ing CHI POSITION.
means that the measurement of DC voltage can be
In some cases the bright line
This
may be oblique to the scale slightly by the
measured.
effect of earth magnetism.
when observing low frequency signals of about
In this case, bring
the bright line untjl it lies on the horizontal
scale line at the center of the screen by
properly adjusting the semi-fixed variable
resistor TRACE ROTATION on the front panel.
The following switching is needed
30 Hz or less.
NORM
A TRIG MODE
DC
A TRIG COUPLING
- General measurement -
Triggering can be effected by operating LEVEL
(1) In the case of observing a single waveform
knob under this setting.
Use CHI or CH2 when not observing the phase
difference between two waveforms or when engag-
settings.
ing in a operation other than X-Y operation.
MODE Switch of Vertical Axis
CH2
Make the following settings when using CHI.
A TRIG SOURCE
CH2
MODE Switch of Vertical Axis
CHI
MODE Switch of TRIG
AUTO
TRIG SOURCE
CHI
AC-GND-DC
AC or DC
Under these settings almost all the repetitive
signals of about 30 Hz or more applied to CHI
can be triggered and observed by adjusting
A TRIG LEVEL.
(When, the range of TIME/DIV is
between 2mS/DIV and 20ns/DIV)
Sjnce the MODE of
horizontal axis is at AUTO position, the bright
6
When using only CH2,
use the instrument after making the following
(~.
(2) When observing two waveforms
..
)
(3) When observing three or four waveforms.
Observation of two waveforms can be made easily
This instrument can be observed the triggering
by setting the MODE switch of vertical axis to
signals (CH3 as A TRIG, CH4 as B TRIG) at
ALT or CHOP.
When observing two waveforms of
depressed position of TRIG VIEW .
high repetition frequencies set the MODE switch
The table shows the relation between setting
to ALT and, in the case of low frequencies, set
of vertical mode and traces on CRT.
it to CHOP.
Normally, ALT and CHOP are recom-
mended by selection of TIME/DIV.
V. MODE
CHI
ALT;
0.2ms/DIV
20ns/DIV
CHOP;
0.5ms/DIV
0.5s/DIV
No. of display
CHl, CH3
CH2
CH2, CH3
ALT
CHI, CH2, CH3, CH4
When measuring the phase difference, measure
CHOP
CHI, CH2, CH3, CH4
after effecting triggering with leading phase
ADD
CHI + CH2, CH3, CH4
signal.
The displaying position of CH3 (A TRIG) is
located near the 100%'s sub-graduation, and
possible to adjust by A TRIG LEVEL knob.
CH4 is fixed at O%'s sub-graduation.
7
5. Method for Connecting Signals
(4) When observing waveform with X-Y
Set the MODE switch of vertical axis to CH2
(X-Y) and DISPLAY switch to X-Y.
Then the
instrument works as an X-Y oscilloscope.
Each input is applied to the instrument as
The first step of measurement is introduce the
signal desired to measure to the oscilloscope
properly.
Do it with utmost care.
(1) When using a probe
follows.
Use the attached probe, AT-10AE 1.5, when
X-axis signal
measuring a high frequency wave with high
(horizontal axis signal)
CHl INPUT
accuracy.
CH2 INPUT
input signal is attenuated by this probe to
Y-axis signal
It should be noted, however, that since the
(vertical axis signal)
In this case leave the horizontal axis magnification switch (PULL
x
10MAG inner shaft knob)
at depressed position, and the AC-GND-DC of
X-axis (CH1) to AC, also TRIG VIEW and BW LIMIT
20MHz are undepressed position (button out).
1/10 before it is input to the oscilloscope the
use of the probe is disadvantageous for low
signals, and that at the same time the measuring range is extended by that amount for high
signals.
U
-"'Lt . - -
-- - - -
10%~~-+-rY-+-~hcl-+-L
'0
--\
- - - -- - - -
---
1
O%~~-+-r~+-r-~~
Zero level (reference line)
(3) Period measurement
This will be explained taking the drawing at
follows as an example
(2) AC voltage measurement
The same as paragraph 6 (1), "DC voltage mea-
100%
90%
-- --
surement", but here those is no need of matching the zero level with the scale line.
Move
the zero level at will to a position easy to
- -- - - -- - -
- - -
111 ill /\ 11\ /\
J ilL i I \ I \ I \
IJ
I
\
\1
10%
0% -- - - - - - -
\1 j
- - -
-
-
observe.
In the drawing as follows, VOLTSjDIV is IVjDIV,
IVjDIV
x
5
=
5 Vp-p [50 Vp-p at using the probe
AT-IO'AE 1. 5( 10: 1) 1.
When magnifying and observ-
ing a small-amplitude signal superinposing as
increases, set AC-GND-DC switch to AC.
voltage is cut off and AC voltage can be
observed by increasing sensitivity.
12
The DC
Time A
Time B
One period covers the time A and time B, which
are separated from each other by 2.0 DIV on the
CRT.
When the sweep time is ImsjDIV, the period is
given by
1 msjDIV
x
2.0
2.0 ms
2.0 x 10-3 s
(
.)
This means that CHI is used as the triggering
Accordingly, the frequency is
1/(2.0 x 10- 3 ) = 500 Hz
signal when investigating the length of time
(However, when the knob MAG x 10 is at pulled
by which the signal of CH2 is delayed from the
out position, TIME/DIV must be converted to
signal of CHI.
1/10 since the sweep is magnified.)
case.
(4) Measurement of time difference
CH2 is used in the reversed
In other words, the signal leading in
phase is selected as the triggering signal
Triggering signal source "SOURCE" is selected
source.
as offering reference signal when measuring the
If this process is reversed, the portion to be
time difference between two signals.
measured may sometimes not appear on the screen.
that pulse trains as shown in (a).
Assume
Then (b)
shows the case when CHI is taken as the trig-
Thereafter, equalize the amplitudes of the two
signals appearing on the screen or superimpose
gering signal source and (c) the case where
one another.
CH2 is taken.
Read the time difference by the interval
CHI
between 50% amplitude points of the two signals.
':
~
I
Sometimes the superimposing method is more con-
I
1Pu-u--u-L
venient from the point of view of procedure.
I
,I
,
caz,
I
)
,,
(a)
l
CHI
CH I ",
,'-+------,,
I
I
I
-
'"
Time
difference
"
CHZ
'\
- -'
rn.eft
difference Equalize
~ ~
amplitudes
o
CHZ
_____ J.::::-V by
VAR
!
Equal amplitude measuring method
(b)
Superposition measuring method
(c)
13
The true rise time is given by
{Cautions ')
Since the pulsed wave contains many high-
Trx
= ~ Tro2 - Trs2
frequency wave components (higher harmonics)
depending on its width or period, pay the same
attention as given to high frequency signals when
handling it.
Accordingly, use a probe or coaxial
cable and shorten the earth lead wire as much as
Moreover, in general, in a circuit free from
waveform distortion such
the following relationship is established
between frequency band and rise time.
possible.
fc
(5) Measurement of rise (fall) time
where, fc
To measure the rise time pay attention not only
to the above mentioned items but also to measurement error.
/
a~ overshoot and sag, ('
tr
x
tr = 0.35
Frequency band (Hz)
Rise time (s)
The rise time and fall time are determined by
the time elapsed between the 10% to 90% values
The following relationship exists between the
rise time Trx of the waveform to be measured,
the rise time Trs of oscilloscope, and the
rise time Tro displayed on the screen.
of pulse width.
(6) Measurement of single-shot signal
Single sweep is conveniently used in the measurement and photography of single-shot signal, waveform of remarkably non-uniform repetition (such
When the rise time of the pulse going to be
as impulse waves, sound waves, switch noise
measured is sufficiently longer than the rise
waves).
time of the oscilloscope (3.5ns in our case),
the effect of the rise time of the oscilloscope
on the measurement can be neglected.
However,
if both are close to each other, measurement
error may be caused.
14
First set A TRIG MODE on the front
panel to NORM and the effect synchronization by
using a signal or repetitive waveform of about
the same level and by rotating LEVEL.
('"
Next, set A TRIG MODE to SINGLE and depress
RESET button to insure that sweep is made on and
only one time.
Then remove the vertical axis
input signal (by, for example, setting AC-GNDDC switch to GND) , depress SINGLE RESET and
,
"')
~,;-, ;-.
insure that READY LAMP goes on.
B/\
H "
Nf'\
A7Ci0c;d}i~
Y' Trigger level
Y
setting line
Ca) Signal waveform
When apply the input signal, sweep is made for
one time and READY LAMP goes out.
Since sweep
is also made at no signal time depending on
the level, do not rotate LEVEL once SINGLE
RESET is completed.
(c) When the trigger
setting level is y'
Triggering of complexed waveform
(7) Triggering of complexed waveform
In the case shown in the Fig.
and advances to C, E, F,····· and which allows
(a) below where
waveforms greatly different in amplitude alternate, the waveform is doubled if the trigger
level is not set properly.
In the case where
the trigger level is selected as Y line two
waveforms, one starting with A and advancing to
B, C, D, E, F,····· and the other starting with
E and advancing to F, G, H,
I ..... , will appear
alternately on the screen.
They will be
doubled as shown in Fig.
(b) When the trigger
setting level is Y
(b), for which no
triggering can be taken.
(8) Phase shift between two signals
To measure a phase shift between two signals of
the same frequency, the dual trace display
system can be utilized up to the upper limit
frequency of the amplifier.
First, position both signals on the cent er line
of the scale, e.g. just 4 div, as shown in the
following figure by means of the VARIABLE and
horizontal positioning knobs.
Next, set the distance where the center of the
In such a case, rotate LEVEL clockwise until
the trigger level comes to Y' line.
synchronization.
Then the
waveform of the base channel intersects with
that of the scale to 8 div horizontally.
waveform on the screen becomes the one is
shown in Fig.
(c) follow which start with B
15
(9) Measurement by X-Y operation
The phase shift between two signals of the same
CHI (Bas e)
~
CH2
J
frequency can also be measured using a
V. I/V
/~/ "~
~
-I
'l
\
1,1.
\.
\1\
~\.
'/
'/
Lissajou's figure by X-Y operation.
A sine wave input is applied to the audio
circuit being tested.
The same sine wave input
is applied to the vertical input of the oscilloscope, and the output of the tested circuit
is applied to the horizontal input of the oscil-
-----'>
__ Phase di ffe ~nce
0.7 div
8dlv (360")
------')
loscope.
The amount of phase difference between
the two signals can be calculated from the
resulting wave form.
As shown in the above figure, set 1 cycle, 360°
to 8 div.
360°
Then, 8div = 45°/div.
Accordingly, the phase difference in the above
example can be calculated as follows:
1. Using an audio signal generator with a pure
sinusoidal signal, apply a sine wave test
signal at the desired test frequency to the
audio network being tested.
2. Set the signal generator output for the normal
Horizontal distance on the screen:0.7 div
Phase difference = 45°/DIV x 0.7 div = 31.5°
If desired, the circuit's output may be observed
If the portion of the phase difference is much
on the oscilloscope.
smaller, use the MAGNIFIER at the xlO position
over-driven, the sine wave display on the oscil-
in the above setting.
At this time, 360° is
displayed in 8 div xlO.
360°
Then, 8 divxlO = 4.5°/DIV (0.2 div=0.9°)
16
operating level of the circuit being tested.
If the test circuit is
loscope is clipped and the signal level must be
reduced.
3. Connect the Channel 2 probe to the output of
the test circuit.
~:'.'
4. Set the DISPLAY to X-Y position.
5. Connect the Channel 1 INPUT probe to the input
SINE
of the test circuit. (The input and output test
B
~
A
connections to the vertical and horizontal
WHERE
oscilloscope inputs may be reversed.)
PHASE
6. Adjust the Channel 1 and 2 gain controls for a
ANGLE
suitable viewing size.
7. Some typical results are shown in Fig.(b).
If
the two signals are in phase, the oscilloscope
trace is a straight diagonal line.
If the ver-
tical and horizontal gains are properly
adjusted, this line is at a 45° angle.
A 90° phase shift produces a circular oscilloscope pattern.
Phase shift of less (or more)
than 90° produces an elliptical oscilloscope
pattern.
~
The amount of phase shift can be
calculated from the oscilloscope trace as shown
Fig. (a)
Phase shift calculation
/
~
NO AMPLITUDE DISTORTION
NO PHASE SHIFT
AMPLITUDE DISTORTION
NO PHASE SHIFT
~
0
180 0 OUT OF PHASE
in Fig.(a).
0
NO AMPLITUDE DISTORTION
PHASE SHIFT
0
AMPLITUDE DISTORTION
90° OUT OF PHASE
PHASE SHIFT
Flg. (b)
Typical phase measurement
oscilloscope displays.
17
(10) How to use TV exclusive synchronization
Cl)
Difference in the circuits
On the image waveform of TV
Exclusive circuit for conventional
oscillograph
l
SiV~
EXCIU..
(~rinciple
f - - - - - . - - - - - - , - - - - - - - - - - . __
General circlllt
i-,iffiPl€ sync~r0111z1ng
I ;t
t.": .
circuit for this.
lDstrument
drawing)
• TV exclusive synchronizing
Clrcult
separator circuit
-------4------------------Video slgnal
si
Synchronizing
signal pulse
(SYNC pulse)
To trigger circuit I
To trigger circuit
I
~
~----------------lV(vertical)
."
~I
"
~I~
In the work concerned with TV, complexed signals
containing video signal, blanking pedestal
I
"
u
I
I
I
SYNC Peak
Detector
signal, and synchronizing signal are often
However, since the waveform is commeasured.
plexed, a special circuit is needed to effect a
stable triggering with vertical waveform.
I
SLOPE
!
II
Hard to synchronize I Synchronization is more I
because video signal I easily effected than in I
is applied directly ,the circuit shown at
i left, because the signal I
as trigger signal.
I i~ integrated to remove
I
L-...L_ _ _ _ _ _ _ _
hlgh frequency com-
I pOTIents.
I
triggering~
de;:~ted I
Stable
obtained, after
the peak of SYNC pulse
I
then the trigger level in
feed back roap of operational amplifier should
be fixed its SYNC tip.
(
18
I
..
,
®
Operation
To observe vertical
signal
I1
I
I
I1
I1
To observe horizontal
signal
---,
ijm millIII III"I
IU
A TRIG MODE: TV
COUPLING: TV-V
LEVEL: PULL TV(-)
TIME: O.lms/DIV O.2S/DIV
Will
IIlllll
I
I
A TRIG MODE: TV
COUPLING: TV-H
LEVEL: PULL TV(-)
TIME: 50~s/DIV 20ns/DIV
Generaly, video signal of TV has negative
synchronizing signal.
Use at pull out
position which is A TRIG LEVEL knob.
If
the video signal is inverted then A TRIG
LEVEL is depressed.
signal
',)
4-synchronizing
signal
Example of
Example of
(-) synchroniging signal (+) synchronizing signal
If the sync and blanking pulses are
positive, set the switch to TV(+).
19
(11 ) Operating procedure of delayed sweep
INTEN
A TIME/DIV
Choose A TIME/DIV properly
There are two kinds of time delay sweep; one is
B TIME/DIV
Set B TIME/DIV at a more rapid
AUTO time delay sweep (continuous time delay
sweep time than the one set by
sweep) and the other TRIG time delay sweep (trig-
A TIME/DIV
gering time delay sweep).
These are selected by
two, the INT (CHI, CH2 internal triggering time
delay sweep) and EXT (external triggering time delay
sweep).
mode.
Usually, the instrument is used in AUTO
Although the. AUTO time delay sweep is
easy to operate the maximum magnification factor
is limited by delayed jitter (rolling) (to a few
hundred times).
On the other hand, since no
jitter is generated in TRIG time delay sweep,
this sweep has the feature of being enabled to
increase the magnification factor.
However, the
magnification factor is limited by the brightness
of CRT (to a few thousand times).
At time of AUTO (continuous time delay sweep)
Effect triggering by A sweep and set the knobs
as follows.
Then the high brightness portion of A sweep will
appear without fail (if not, adjust INTENSITY).
TRIG time delay sweep is further classified into
20
AUTO
DISPLAY
MODE switch of B TRIG.
(i)
B TRIG MODE
(Used to magnify and observe any portion of a
complexed waveform in horizontal direction. )
Rotate DLY TIME POSITION knob (the cent er FINE
is for fine adjustment).
The high brightness
portion will move continuously.
Bring this high
brightness portion to the position desired to
be magnified, switch DISPLAY to B.
Then the
high brightness portion is magnified to occupy
the full area of the screen.
The sweep time is
the indicated value of B TIME/DIV.
i-----:::==========t-Bright
portion
A INTEN ALT B~
)
(~
fail.
state.)
(This state is called the B-triggered
Rotate DLY TIME POSITION knob.
The high brightness portion will move continuously.
Further rotation will bring this
portion to the next "peak".
Therefore, bring
this high bright portion to a position
desired to be magnified and then set DISPLAY
at B.
The high brightness portion is
magnified to occupy the full area of the
screen.
A INTEN ALT Blx-vl
~)
(
(D
The sweep time for this case is the
value indicated by B TIME/DIV.
The gen-
locking is fixed at AC.
A INTEN B X-Y
At time of TRIG (TRIGGERING time delay sweep)
Effect TRIGGERING with A sweep and set the knobs
c_----""'~
__~)
as follows.
B TRIG MODE
TRIG (INT or EXT)
DISPLAY
INTEN
A TIME/DIV
Chose A TIME/DIV properly.
B TIME/DIV
Set B TIME/DIV at a more rapid
sweep time than the one set by A
, ,:
)
TIME/DIV.
/
SLOPE
Set SLOPE either to + or to -
Thereafter, rotate LEVEL.
The high bright-
ness portion of A sweep will appear without
A INTEN B X - Y
(-----=~=----~)
* The case in which SLOPE
is + is shown
21
®
ALT sweep
This ALT sweep is displayed A sweep and B
(delayed) sweep alternatively.
(d) Only displayed at
intensive part
Belowing figures
are showing when CHI to be put triangle waveform
f.
A IETEN ALT B X-Y
and CH2 to be put rectangular waveform.
(
(a) Normal observation
lI#J )
A INTEN ALT B X-Y
(1)lI
)
(b) Prepared to magnify
When DISPLAY switch is set the ALT, displaying
signal of B sweep can be control the position
CHI A sweep
A INTEN
(lI#J
ALT
to easily observe by TRACE SEP.
The range of
position be shift to upper and lower three
B X-Y
)
CH2 A sweep
divisions compere the A sweep.
Then depress
the TRIG VIEW switch, 4 traces come to screen
in totally 8 traces to observe.
(c) (b) and intensive
display in alternatively sweep
These new 4
traces are A and B sweep of CH3 and CH4.
I7"I-AAA.q,....,.~--
'-
f-
~CH3
Input Signal
~CHl
Input Signal
~CH2
Input Signal
~CH4
Input Signal
f
'.
'~'..'.
,)
;1
7. Panel Descriptions
(1) Power Supply and CRT
Operating voltage and fuse
This model can be operated from either a 100
:)
volt, a 120-volt, a 220-volt or a 240-volt
nominal line voltage source.
The Line Voltage Selector assembly on the
rear panel converts the instrument from one
operating range to the other.
In addition,
this assembly changes the primary connections
of the power transformer to allow selection of
one of four regulating ranges.
also includes the line fuse.
The assembly
Use the following
procedure to convert this instrument between
C!)
nominal line voltages or regulating ranges.
brightness of the CRT display.
1. Disconnect the instrument from the power source.
2. To convert from lOO-volts nominal to 220-volts
nominal line voltage or vice versa, pull out
the Voltage Selector switch turn it, and plug
it back into the remaining holes.
Change the
,,")
3. Before apply power to the instrument, check
that the indicating tabs on the rear panel.
Clockwise adjust-
ment increases brightness.
@)
®
line-cord power plug to match the power-source
receptacle.
POWER/INTENSITY
Turns the power on or off and controls the
Pilot lamp
Lights when the instrument power is on.
FOCUS
Provides adjustment for optimum display definition.
@
TRACE ROTATION
Corrects slight tilting of trace caused by
external magnetic fields.
25
®
@
SCALE ILLUM
Controls graticule illumination.
area, photographing.
the input signal fed to CHI.
CHI OR
[K]
On X-Y operation, the kaob functions to
change the.sensitivity of the X-axis.
(CH2 or
[YJ
sensitivity switch)
This is a knob for switching the sensitivity of
INPUT
This is an input plug for use with the CHI
the input signal fed to CH2.
vertical amplifier and X-axis (horizontal axis)
is accomplished in ten steps from 5mV/DIV to 5V/
amplifier during X-Y operation.
DIV.
CH2 OR [YJ INPUT
This is an input plug for use with the CH2
change the sensitivity of the Y-axis.
Switching action
On X-Y operation, the knob functions to
To mea-
sure by the use of the indicated voltage sensi-
vertical amplifier and Y-axis (vertical axis)
tivity, be sure to set each of the VARIABLE to
amplifier during X-Y operation.
CAL position by turning fully clockwise.
AC-GND-DC
(Alternating Current-Ground Switch-Direct
signal is applied to the input terminal by the
are ten times the indicated voltage.
Switches the coupling of the signal fed to the
vertical axis input.
the DC position.
If the
use of a 1/10 low capacitance probe, the values
Current)
26
Switching action
is accomplished in ten steps from 5mV/DIV to 5V/
DIV.
dently of display portion or applied signals.
(2) Vertical deflection
®
sensitivity switch)
This is a knob for switching the sensitivity of
Compress display within graticule area, indepen-
®
0
illuminate the graticule when viewing in a dark
~ TRACE FINDER
(j)
VOLTS/DIY
(CHI or
Useful to
DC coupling is obtained on
On AC position, the direct
@
VARIABLE
This is a vertical axis sensitivity fine adjustment which is capable of attenuating to less
current component is blocked by a capacitor.
than 1/2.5 by indication of each range of VOLTS/
The GND position grounds the input of the ampli-
DIV.
fiers and opens the input terminal
sensitivity indicated by VOLTS/DIY, turn the
To measure a voltage by the use of voltage
c
VARIABLE clockwise fully to CAL.
@
)
a .. Put a high level of signal sinchronized with
POSITION, PULL xlO MAG
the observing signal into the A EXT TRIG
CHI # (Vertical position adjustment)
With the knob turned clockwise, the waveforms
trigger signal source.
of CH-l move upward.
terminal or CH2 terminal (when using CHI) as
When the knob is turned
counterclockwise, the waveforms move downward.
b.
CH2 it (Vertical position adjustment)
Clockwise rotation will move pattern up, and
c. In case of observing signals over 4kHz,
select "ALT" of vertical MODE.
counterclockwise rotation will move pattern
down
When the knob is pulled, the vertical axis
sensitivity at each range of VOLTS/DIY is
In case of observing low frequency signals
under 4kHz, select "HF REJ" of A TRIG COUPLING.
~
MODE
o CHI
Only the input signal applied to CHI is
increased by 10 times.
displayed.
INote I
1. When measuring at 5 mY/DIY
o CH2, I X-YI
~
5 V/DIY range,
use the xl (PULL xlO MAG switch is depressed
posi t ion).
2.
Otherwise the S /N and frequency-
Only the input signal applied to CH2 is
displayed.
o ALT
bandwidth of instrument will be decreased.
CHI and CH2 signals are displayed alternately
In case of the observation of signals in the
on consecutive sweeps.
high-sensitivity range of
500~V
to 2mV/DIV and
o CHOP
in the CHOP MODE, it is sometimes difficult to
CHI and CH2 signals are displayed simultaneously
get stable synchronization due to noises caused
by switching between channels at about 250 kHz
rate.
by the high amplification of vertical amplifier.
In these cases:
27
o ADD
(3) Horizontal deflection
Displays the algebraic sum of the channel I and
channel 2 input signals.
If the channel 2 dis-
play is inverted (press CH2 INV), an CHI minus
CH2 display results.
@ BW
@
DISPLAY
This switch is used to select the operation
mode of the horizontal axis.
o A
The BW LIMIT 20MHz switch provides a method of
o INTEN Although the sweep on the screen is A
sweep it indicates B sweep (delay time
quency signals when viewing low-frequency signals.
sweep) by intensity modulation.
o ALT
Signals applied respectively to A sweep
deflection system is limited to about 20MHz.
and B sweep appear on the screen alter-
Reduces the bandwidth of channel I and channel
natively each sweep.
2 to approximately 20MHz.
o B
INV
Inverts the polarity of the channel 2.
occupy the full area of the screen. The
sweep time at this time is B.
Useful to comparison of two signals of opposite
polarities, and observation of a differential
signal of CHI and CH2 along with ADD mode.
TRIG VIEW
This switch is used when desiring to observe
the waveform triggering signal on the screen.
The intensity modulated portion in
INTEN mentioned above is magnified to
@ CH2
o X-Y
This position is used when using the
instrument as an X-Y oscilloscope.
X
direction signal is input to CHI and Y
direction signal to CH2.
The vertical
deflection sensitivity at this time is
It is also used when measuring the phase dif-
read on CH2 VOLTS/DIV and horizontal
ference between the synchronizing signal and
axis sensitivity on CHI VOLTS/DIV.
other input signal.
Vertical position is set by CH2 POSITION
t ion. )
28
This
reducing interference from unwanted high-freWhen set it -3dB bandwidth point of the vertical
@
A sweep appears on the screen.
setting is used in normal cases.
LIMIT 20MHz
(quad phenomena observa-
and horizontal position by : POSITION.
@
words.
TRACE SEP
B sweep of the position adjustment knob when
Normally, leave this knob rotated to MIN.
ALT sweep mode.
L';)
INot;~e
instrument has a special control system to
easy observe at high speed sweep range when
DISPLAY is set to ALT or B.
Therefore, the
traces is still remained when decrease the
INTENSITY to minimum.
~ A TIME/DIV (Sweep speed selection)
The outer knob controls the A (Main) sweep rate,
which has from 20 ns/DIV to 0.5 s/DIV selects
23 fixed sweep speeds.
@lB TIME/DIV
The inner knob control the B (Delayed)-Sweep rate.
@
PULL SWP VAR
Provides continuous adjustment of A sweep TIME/
DIV between calibrated positions, when the
inner shaft is at pull.
Counterclockwise rota-
tion to the full delays the sweep by 2.5 times
or more.
Normally, the inner shaft is left depressed.
VAR HOLD OFF
Increases the time between sweeps and aids triggering on complex displays such as high-frequency signal,
Rotate the VAR HOLD OFF slightly to
obtain a stabilized triggering.
irre~ular
signal and digital
@
FINE
PULL xlO MAG
POSITION
This knob is used to adjust position of the
display horizontally.
It is indespensable in
the measurement of the time of waveform.
Display is moved toward right when the knob is
rotated clockwise and toward left with counterclockwise rotation.
The outer shaft is for
course adjustment and inner shaft for fine
adjustment.
A and B sweep are magnified 10
times by pulling out FINE knob (inner shaft) of
POSITION.
In this case the sweep time is 1/10
of the value indicated by TIME/DIV.
Bring the
portion of the waveform desired to be magnified
observed to the outer of the scale by operating
POSITION of the horizontal axis.
Next switch xlO MAG switch to PULL (pulled out
state).
Then the waveform placed at the cent er
is magnified in right and left directions.
The sweep time in this case is 10 times the
sweep speed obtained by TIME/DIV, in other words,
the reading is 1/10 of the sweep time indicated.
29
(4) A Triggering
@ SOURCE
This switch is used to select the triggering
100%
90%
signal source A Sweep.
-
c··
Used when triggering is made by observing
(
..
signal for CH2.
\
/
I1
o CH2
1\
I
100%
90%
Used when triggering is made by observing
signal for CHI
\
1/
o CHI
o LINE Used when observing a signal triggered with
the frequency of mains (AC POWER).
o EXT
Used when triggering is made by a signal
applied to EXT input connector, indepen-
/
dently from observation signal.
o EXTdO
..
......
Attenuates external TRIG INPUT signal by a
I
factor of 10.
@TRIG INPUT (CH3)
Input terminal for use for external triggering
@DLY TIME MULT
signal of A sweep.
This control is used to set the delay time of
@COUPLING
B sweep starting point with respect to A sweep
This switch is used to select the coupling mode
starting point.
of A sweep triggering signal.
When the above mentioned
DISPLAY is set in INTEN or B.
o AC
At this setting both the DC component and
C')
the very low frequency of triggering, signal
are cut off.
30
@
oHF REJ
A TRIG LEVEL
Among the AC components of triggering signal,
This knob is used to decide at which portion
the high frequency components of about 4 kHz
of the waveform should the sweep the started
This knob is also
by setting trigger level.
or more are attenuated.
A stabilized trigger-
ing unaffected by noises of about 4 kHz or
enabled to switch SLOPE.
(normal state) is for +
more can be obtained.
oLF REJ
Depressed position
SLOPE and PULL
position (state in which the knob is protrud-
Among the AC components of the triggering
ing) is for
SLOPE.
signal the low frequency components of less
than about 4 kHz are attenuated.
A stabilized
*Explanation of trigger polarity SLOPE.
triggering free from noises of less than about
4kHz can be obtained.
oDC
Push
Triggering signal is amplified unchanged.
This setting is used when triggering with a
very low frequency signal or when effecting DC
like triggering.
at time of
8
SLOPE
oTV-H
This setting is used when observing the entire
horizontal picture of video signal.
oTV-V
This setting is used when observing the entire
Pull
at time of
8
SLOPE
vertical picture of video signal.
INote I Both setting will be combinated with TV
position on A TRIG MODE switch.
31
'*' Explanation
@
of trigger level LEVEL.
A TRIG MODE
o AUTO
The instrument is brought into automatically triggering sweep in which sweep is
always conducted.
In the presence of trig(.
,
>
IIF.NABLE
~[NGLE
I+5V)
SCHEMATIC DIAGRAM ~
[TRIGGER (2/2))
43
n.
IOK
,lln6
lS~015
B~WP('Xlr.
~12\
R5JO
I.J2~lF
I 2\\
f
."
'"
'"
,fg
fiG
"'
11.SKD
RI
1.-lBW
2
I
R
SCHEMATIC DIAGRAM ~
44
[SWEEP GENERATOR]
_m'
O
POSITION
I
Pl'LL X10
PEF-501
(RV-2)
SCHEMATIC DIAGRAM ~
[CALIBRATOR & FRONT PANEL CONTROLS)
45
I~'''~I~---~-------
tJ\'l':lm
:~~;:
SCHEMATIC DIAGRAM~
46
[HORIZONTAL AMPLIFIER,
Z-AXIS AMPLIFIER
& HIGH VOLTAGE CIRCUITS]
JPI107
+lOOV'------I<< ,
I
TI401
)
240V
2<'
220V
2~ '"
120
120V
~i
lOOV
(RV 1301.il1J1
'00
+""----_« 2
«3
J
+l2V' _ _ _ _ _
,oP1OOl
«.
-12"'----~«
;
?
~
~
~
~
"'
<3
HZV
~
.;
GND
RIl2S
IOKF
<;
-12V
')
LJNETRIG
+Cii32
41/16V
SCHEMATIC OIAGRA M~
(POWER SUPPL YJ
(
I
PEF-4!l9!-
47
PEF -495
(\,ERTIC~L PRE~Mf'LlFIER
&. \ ERTICAL
CH~~~EL
SWITCH:
Pll06
6
'f'O\\'ER>,I'PPIY& HORIZO.\TAi
l:kAO
I
Fl~LlER
~357
PEF-5m
:RV-2J
Ll4Ql
~
1.1402
~
DIAGRAM~
1.1403
~
48
PEF531
(CONNECTORS]
(2)
50
Rear panel
11.
(1)
Panel controls
Front panel
49
Source Exif Data:
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