Bandwidth Test - Elenco Electronics AM/FM-108TK Manual

BANDWIDTH TEST
Connect your test equipment to the circuit
as shown
in-iigura
+0.
Set your generator
at
10'7MHz no
modiation and
minimum voltage
output' Set the
."op" for
1OmV
per division'
Turn
the power ON and
.fo*fy
increase
ihe
amplitude of the generator until
4OmVpp
are seen on the
scope'
Increase the
frequency until the voltage drops '707 of its original
value,
2.8
divisions
or 28mVpp' Record the
frequency
of the
generator until the voltage drops
.1O7
of iis
originai value,
2'8
divisions
or
28mVpp'
Record the frequency of the low 3dB drop-off
point
here:
Turn
the
power
OFF
The
bandwidth
can
be
calculated as follows:
Bandwidth=Fh-Fl
Your calculated answer should
be
between
500kHz.
Record Your calculation:
Bandwidth =
kHz.
300
Fl =
-MHz.
BLY INSTRUCTIONS
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