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Matrix Switching Basics
Card
1
Card 2
Notes
:
Backplane jumpers on
both
4
X
20
Matrix
cards
must be
installed.
Figure
2-9
Narrow
matrix
example
(4
x
20)
Wide
matrix expansion
(8x10
matrix)
A
wide
8
row
x
10
column
matrix
is
shown
in Figure
2-
10.
For
this
configuration, the
10
columns
of the
two
matrix cards
must
be
physically
hard-wired
together.
Also note
that
the
backplane jumpers
on one
of the
cards
must
be
removed
in
order
to isolate
the
rows
of
the
two
cards
from
each
other.
Mixing card
types
Different types of cards
can be used
together
to create
some
unique
switching systems. For
example,
you
could
have
a
Model
7012 matrix
card
installed
in
one
slot
and
a
Model
7011 multiplexer card ir^taUed in the
other
slot.
Figure
2-11
shows
a
possible
switching
system using
a
matrix card
and
a multiplexer
card.
The
backplane
jumpers
for
both
the
matrix
and
multiplexer cards
must
be
installed.
This allows matrix
rows
to
be
con-
nected
to
multiplexer banks.
On
the
multiplexer
card,
the
bank-to-bank jumpers
must
be
removed
to
main-
tain isolation
between
matrix rows. See
the instruction
manual
for
the
Model
7011
for
complete information
on
the
multiplexer
card.
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