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Applications —- Type
3A74
swe!
aie
ee
-
pe
erry
Tt
,
NEES
TOT
TFT
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Fig.
3-5.
X-Y
displays
obtained
by
using
four
pairs
of
channels
simultaneously.
(b) Increase the size of the display by increasing the in-
put signal amplitudes or by increasing the vertical and
horizontal sensitivities of the plug-in units.
Center the
display as described
in the previous step.
(c) Measure the distances A and B on the display as shown
in Fig. 3-6.
A/B is equal to the sine of the phase dif-
ference
between
the
two
signals
(see Table
3-1).
EDN
Ty
AE
3
A | it
HH safle HH ses
+H ha HHHflnad
Fig.3-6.
X-Y
method
of
calculating
phase
difference
(0)
of
two
sine
waves.
(d) After
making
the
calculation
for one display,
position
it off
the
crt
and
position
one
of
the
other
dis-
plays on the crt and
calculate the phase difference.
Continue in this manner for the remaining displays.
3-5
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