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MEASUREMENT OF THE VOLTAGE BETWEEN TWO
POINTS ON A WAVEFORM
This technique can be used t o measure peak-to-peak
voltages.
Procedure:
1. Apply the signal t o be measured t o the INPUT jack. Set
the vertical MODE t o the channel t o be used (unapplied
to CS-1020 and 1 0 1 0 ) . Set the AC-GND-DC t o AC, ad-
justing VOLTS/DIV and SWEEP TIME/DIV for a normal
display. Set the VARIABLE t o CAL.
2. Using the y POSITION control, adjust the waveform
position such that one of the t w o 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 w i t h the center vertical graduation line.
4. Measure the vertical distance between the t w o 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 t o t h e center
vertical scale w i t h
Fig. 12
[EXAMPLE]
For the example, t h e t w o points are separated by 4 . 4 divi-
sions vertically. Set the VOLTS/DIV setting be 0.2 V/div
and the probe attenuation be 1 0 : 1 . (See Fig. 12)
Substituting the given value:
Voltage between t w o points = 4.4 ( d i v ) x 0 . 2 ( V ) x 10 = 8.8V
20
Points t o be measured
Adjust t o the horizontal
scale w i t h
POSITION.
ELIMINATION OF UNDESIRED SIGNAL
COMPONENTS (Unapplied to CS-1020 and 1 0 1 0 )
The ADD feature can be conveniently used t o cancel out
the
effect
of an undesired signal component
superimposed on the signal you wish t o observe.
Procedure:
1. Apply the signal containing an undesired component to
the CH1 INPUT jack and the undesired signal itself alone
t o 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 t o ADD, SOURCE t o 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
which
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