The
RF
signal can be used in testing a receiver equipped
with a
beat
oscillator,
or
circuits
that
do
not
require a modulated
signal.
The
RF
signal can be applied
to
a sweep generator for the
marker signal.
3.6 Crystal Oscillator
Output
Control settings:
Mode switch
at
XTAL. Insert a crystal, in FT-243 holder,
in the XTAL socket.
RF
output
switch
at
LOW.
FREQ
RANGE switch
at
"F"
and frequency dial at
150MHz.
FINE control
at
minimum.
The
output
signal is
treated
in the same manner
as
for
the
unmodulated carrier
with
the
exception
that
the
output
level cannot be adjusted.
In certain calibration procedures a short lead near
the
test circuit will provide sufficient coupling.
NOTE:
If
the
RF
signal is required at the same time, set
the
output
frequency with the
FREQ
RANGE switch
and frequency dial
as
required. Adjust
the
RF
FINE
control.
3.7
AF
Output, 1kHz
Control settings:
Mode switch at INT. MOD.
FREQ
RANGE switch
at
"F"
and frequency dial
at
150MHz.
Connect leads from OUTPUT to the test circuit. Use
an
external potentiometer,
100k-1M,
to
lower
the
voltage.
- 7
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