Table of Contents
Advertisement
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
to CS-1020 and 1010). Set the AC-GND-DC to AC, 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)
Adjust to the center
vertical scale with
<> POSITION.
Points to be measured
(00)
soN
Wy
oe
28
as)
Bs
go
—_
&
Oo
oO
oo
5:
>3
Mele
i
Adjust to the horizontal
scale with
4 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) x 0.2(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 CH1 INPUT jack and the undesired signal itself alone
to the CH2 INPUT jack.
. 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.
. 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.
Signal containing undesired component
(Broken lines: undesired component envelope)
Undesired component signal
Advertisement
Table of Contents
