Harman Kardon hk990Vxi - Page 9

This receiver includes unique active circuitry which increases
adjacent FM channel selectivity with no degradation of overall
sound quality. It’s especially useful in areas with many FM
signals close to each other on the broadcast band.
Harman Kardon engineers approached the problem of rejecting
adjacent FM bands by designing active circuitry that works
from the center of the FM band, instead of filtering the outsides
as do competitive designs. A Phase Locked Loop configura-
tion literally locks onto the FM carrier, isolating the central
carrier
frequency
of
the
desired
listening
band
and
then
determining the precise modulation deviation caused by the
music signal during broadcasting.
By limiting the PLL’s tracking range to just slightly more than
that of the modulation, only the signal necessary for good
separation and low distortion is “read”. Total Harmonic
Distortion and stereo separation attain levels which will please
even the most critical listener.
Only activate ACTIVE TRACKING (22) when listening to a station
which
is
difficult
to
tune
due
to
“overlap”
from
another
station.
hk88O0Vxi/hk990VxXi
harman/kardon
HI-VOLTAGE HI-CURRENT
STEREO RECEIVER
REMOTE CONTROL SYSTEM
TUNER PHONO
mm
SEEK = FM/AM AIV cD
||
1 2 SOURCE
=m al
3 4 VCR 1
m=
VCR 2 TAPE 2
5 6
mmm a
TUNING VOLUME
nm
<« 3ref]|<+ >
Figure 2 hk990Vxi Remote Control
Remote
Control
Functions
Remote Sensor
Figure 3 Remote Control Angle of Operation
The
hk880Vxi/hk990Vxi
remote
duplicates
the
most
often
used
front
panel
controls
in
a
compact,
wireless
infrared
device.
hk880Vxi
ONLY
—
The
buttons
marked
TAPE
1
and
TAPE
2 are
not
used
with
this
receiver.
Instead,
tape
decks
may
be
connected
up
to
VCR
1
and
VCR
2, and
selected
with
those
remote
control
buttons.
The
remote
control
operates
within
a
30-degree
angle
of
the
hk880Vxi/hk990V
xi.
Two
batteries
(included)
must
be
loaded
into
the
remote
before
the
remote
control
unit
will
operate.
See
further
instructions
on
page
16
of
this
manual.