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Card
Connections
&
Installation
3.4.3
Two-mainframe
system
Figure
3-13
and
Figure 3-14
show
a
system
using
three
matrix
cards in
two Model
7001 mainfraines
to
config-
ure a 4
X
30
test
matrix.
This
system
is
sinular to the
Two-card System
(see
previous paragraph), except
that
a third matrix card
(installed in
a
second mainframe)
is
added.
Figure
3-13
shows
the
connection
scheme
for the
multi-
pin
connector
cards.
External
circuit
connections
to
the
Model
7001 #1
mainframe
are identical to the
ones
used
for the
Two-card
System.
The
third
matrix card
(installed in
Model
7001 #2
mainframe)
shows
how
a
custom-built
cable
can
be
used
to
make
connections
to
external
circuitry.
A
suitable
round
cable
can be
termi-
nated with
a 96-pin female
DIN
connector
(Model
7011-KlT-R)
that vkll
mate
to
the
Model
7012-C matrix
card
assembly.
The
unterminated
end
of the cable
is
connected
directly to
instrumentation
and
DUX
Notice
that the
row
connections
for
the third
matrix card
are
made
at the
instruments.
Figure
3-14
shows
connections
for
the
screw
terminal
connector
card.
Single
conductor connections
are
made
directly
from
the
screw
terminals of the
connector card
to
instrumentation
and
DUT
3.5
Mode!
7012
installation
and
re-
moval
This
paragraph
explains
how
to
install
and remove
the
Model
7012 matrix
card
assembly from
the
Model
7001
mainframe.
WARNING
Installation or
removal
of the
Model
7012
is
to
be performed by
qualified
service personnel. Failure
to
recog-
nize
and
observe standard
safety pre-
cautions could
result in
personal
injury or death.
NOTE
If
using
the
screw
terminal connector
card,
make
sure
your
external
circuit-
ry
is
wired
to the
card
(as
explained
in
paragraph
3.3.1)
before
installing
the
card
assembly
in the
Model
7001
mainframe.
CAUTION
To
prevent contamination
to
the
ma-
trix
card
that
could degrade
perfor-
mance,
only
handle
the
card
assembly
by
the
edges
and
shields.
3-14
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