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Applications
Voltage measurements
when measuring the voltage of a signal use is made
of the calibrated deflection coefficients o'f the vertical
deflection system. Using the control elements on the
plug-in unit and the basic oscilloscope, adjust to a
triggered ttace.
In Fig. 7 the peak-to-peak value amounts to 3 x 20
m V -
60 m V .
NoÍe: The tolerance of the deflection coefficient (3Vo)
can be reduced by adjusting, in the position
used, the deflection coefficient by means of
setting "GAIN ADJ.".
For this, the calibration voltage of the basic
oscilloscope can be used.
Figure 8 indicates the maximum magnification (A)
and the part of the magnified signal (B) that can be
displayed on the screen (C) by means of the "SHIFT"
contro,l.
Note: When loading to more than 10 X the useful
screen height, the amplifier will be overloaded.
The picture then obtained is no lo,nger propor-
tional to the input vo'ltage.
Fig. 7. Voltage meqsurement
v f c m
1
T
3cm
t
I
I C
I-
mV/cm
/
I
\
/
\
/
\
t
\ \
/
\
Fig. 8. Limits of the Y deflection
PEM 2892
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