Kenwood KT-7500 Instruction Manual page 7

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CONNECTING INSTRUCTIONS
AM ANTENNA
SETTING
First tune in
an AM
station.
Then,
while
watching the SIGNAL meter, adjust the AM ferrite
bar antenna on the
rear panel
for
the best
signal.
Notes:
1.
Because
the ferrite
bar
antenna
has
dírective properties,
its direction
should be
adiusted
for
best
reception while
l¡sten¡ng
to
a
station.
2.
ln
fringe
areas
or in
locations surrounded
by steel frame
buildings where satisfactory reception cannot
be obtain-
ed
with
the
ferrite
bar
antenna,
an
AM outdoor
antenna
should
be
connected
to
the AM terminal.
OUTPUT JACKS
VARIABLE
These
jacks connect
to
the
stereo
amplifíer's
TUNER
or AUX
input terminals. The
level of
these terminals is controlled by the Output
Level
knob on the
front
panel.
FIXED
These
jacks connect to
the
tape deck
Line
lnput terminals.
The
sígnal level
from the output
terminals cannot be controlled from the
KT-7500;
this
must be done
with
the
tape deck
input
level
controls.
FM MULTIPATH
JACKS
This
unit
is
províded with FM multípath jacks
through which multipath distortion can
be
detected.
These
jacksare connected with
an oscillospope
and
the antenna is positioned
at the optimum
height
and
in the
best
direction by
observing the displayed
waveform
until
distortion can
be
lowered
to
a
minimum
level, operate
as
follows:
1.
CONNECT
thE
KT-7500 FM MULTIPATH
V
(vertical) and
H
(horizontal) output terminals
to
the
respective ¡nputs on the
oscilloscope.
2.
Tune
in
an FM
broadcast
on
the
KT-7500;
the signal
waveform
will
appear on the
screen
of
oscilloscope. Then adjust
the
antenna
height and direction for
least
multipath
recep-
tíon.
This
will
be
índicated
by a
waveform
similar
to
the
one on the
left in
the
figure.
The more multipath
signals
enter,
the
more
the waveform
will
be distorted as shown on
the right in the
figure.
Keep
the AM ferrite
bar antenna
away
from
the
rear
panel,
AM
ANTENNA
SETTING
H:
Horizôntal
V:
Vertical
DET. OUT JACK
The Horizontal outpur
of
the FM MULTIPATH
can
be used
for
the
purpose
of
the FM
DETECTOB
OUT.
The FM detector c¡rcu¡t
output
is
made available here so
that this tuner will
be ready
for
4-channel broadcasting developments
in
the
future.
When FM
discrete 4-channel broadcasting
becomes
a reality,
a simple demod-
ulator
connected here
will
enable
you to fully
enjoy this
coming
development.
FM
DE.EMPHASIS SWITCH
Before shipment this switch
has
been pre-set
to
the appropriate position
for
the delivery
area.
Units
forthe
U.S.A. and Canada are
setto "7âpsec"
and
other units
are set
to "S0psec".
lncorrect sett¡ng will
adversely affect the high
frequency range, so
check
the position
before
operating this
unit. lf
you are in doubt about the
preemphasis used
in your
area,
consult your audio
dealer.
Note:
The "2Sgsec" position should
only
be selected
when
this
equipment
is
used
with
an auxilíary
Dolby
NR
adaptor
to
receive FM Dolby
broadcasts.
Kr-7s00(K) 7