KING KR 21 - SECTION II INSTALLATION; 2.1 GENERAL; 2.2 UNPACKING AND INSPECTING EQUIPMENT; 2.3 INSTALLATION NOTES AND PRECAUTIONS

KING
KMA 20/KH
21
MARKER
BEACON
RECEIVElt/
ISOLATION AMPLIFIER
SECTION
II
INSTALLATION
2.1
GENERAL
Installations of the KMA
20,
KR 21 and
KA
40 will differ
according
to
the
number
of receivers
installed,
equipment location
and other factors.
The
cable harness
will
be fabricated
by
the
installing agency
to fit
these
various
requirements.
This
section
contains
interconnect diagrams,
mounting
dimensions
and information pertaining to installation.
2.2
UNPACKINGANÐINSPECTINGEQUIPMENT
Exercise
extreme
care
when
unpacking the
equipment.
Make
a
visual inspection of the unit for
evidence of
damage incurred
during
shipment. If
a claim
for
damage
is to
be made,
save
the
shipping
container
to
substantiate the
claim.
The claim should be
promptly filed with
the
transportation
company. When the equipment
has
been
removed,
place
in the shipping
container
all packing,
bracing
and
filler
used
in
the
original
packing. Save
the
packing
material for use
in
unit
storage
or
reshipment.
2.3
INSTALLATION
NOTESAND
PRECAUTIONS
-WARNING-
See
Figure
2-BA
& H before
proceeding with cable
assembly.
The KMA
20
will conform to the needs of the customer,
installing
agency
and
existing
conditions
as to unit
location
and
type
of installation. Customer options will determine the
exact
wiring
details
to
be utilized in
the
installation.
llowever,
the
following
suggestions should
be considered
before proceeding with
the
actual installation. Close adherence to these
suggestions
will assure
a more
satisfactory
performance
from the equipment.
(1)
Placement.
Select
the equipment
location.
The KMA
20
may
be
rigid mounted
in any
location which will accomodate the
necessary
front panel space requirements and the
depth
required
behind the
aircraft instrument panel. Since
the
unit
is
shorter
than
the other
radios,
it
is
normally
mounted at
the
top of
a
vertical
stack.
When
the
equipment cover
(mounting
tray)
is
installed,
a
front-operating
hold
down screw allows
easy
installation and
removal of the unit
from
the
aircraft mounting
tray.
If
possible leave enough space on the
sides
of the unit face
panel
to allow
grasping
the
unit
during
removal.
Thembove applies
to
the
KR 21 and KA 40 and
additionally they
may be
mounted either
vertically
or
horizontally
by changing the
marker
lenses.
(2)
Cable
Routing.
When
shipped,
the protective cover
and
connector
mounting
plate on
the
rear
of
the equipment
cover
are
assembled for
the cable
to
emerge
from the right side of
the unit.
If
it is
desired that the
cable emerge
from
the
left
side
of
the unit, the
connector
mounting
plate may
be
reversed.
The
only
precaution
to take
is
that
Pin 1 of the unit connector
mate
with Pin 1
of
the harness
connector when
the
unit
is installed.
(3) System
Grounding.
On
all
receivers
which have separate audio grounds,
it is
recommended
that these
grounds
be carried
to a
solder
lug on the
connector
mounting
plate
of the
KMA
20.
All audio
grounds should be
terminated here
io
minimize
the possibility of
ground
current
noises being
introduced
into
the
audio
system. It is also suggested
that
the
grounding
connections from the
speaker or
speakers be
made
at
the KMA
20 ground terminals.
Rev. 1,
August, 1972 Page
2-1