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Card
Connections
&
Installation
Typical
connection
technit|ues
All external
circuitry,
such
as
instrumentation
and
DUTs,
that
you wish
to
connect
to
the
matrix card
must
be
terminated with a
single
96-pin
female
DIN
connec-
tor.
The
following connection techniques
provide
some
guidelines
and
suggestions
for
wdring
your
circuitry.
WARNING
Before
beginning
any
wiring proce-
dures,
make
sure
all
power
is
off
and
any
stored
energy
in external
circuit-
ry
is
discharged.
NOTE
It
is
recommended
that
external
cir-
cuitry
be connected (plugged
in) after
the
Model
7012 assembly
is
installed
in the
Model
7001
mainframe
and
with
the
7001
power
off.
Installation
is
covered
in
paragraph
3.5.
Output
relays
—
The
multi-pin connector
card uses a
relay
for
each
of the
four
output banks.
These
output
relays are
normally
open
to
prevent
any
hazardous
voltages
(via
the
mairtirame badqjlane)
from
appear-
ing
on
the pins of the
male
DIN
connector.
The
output
relays will
only
close
when
the
Model 7011-MTC-2
ca-
ble
assembly
is
connected
to card.
If
building
you
own
cable assembly,
you must
make
sure
that
it
shorts pins
la
to
lb
of the card
connector
(Figure
3-8)
when
it
is
mated
to the card.
Shorting pins la
to
lb
allows
the
output
relays
to close.
Round
cable
assemblies
—
Figure
3-6
shows
t3q3icai
round
cable
connection techniques using
accessories
available
from
Keithley.
In Figure 3-6A, connections are
accomplished using
a
Model
7011-MTC-2
cable
and
a
Model 7011-MTR
bulk-
head
connector.
The
two-meter roimd
cable
is
termi-
nated with a 96-pin female
DIN
connector
at
each
end.
This
cable
mates
directly to
the multi-pin
connector
card
and
to
the
bulkhead
connector.
The
bulkhead
con-
nector
has
solder
cups
to
allow
direct
connection
to in-
strumentation
and
DUX
Figure
3-7
provides
pinout
for
the
bulkhead
connector.
The
view
shown
is
from
the
solder
cup end
of the connector.
In Figure
3-6B,
connections
are
accomplished using
a
Model
7011-MTC-2
cable
assembly
that
is
cut in
half.
The
96-pin
female
DIN
connector
on one end
of
the
ca-
ble
mates
directly to
the
multi-pin connector
card.
The
imterminated
end
of the cable
is
wired
directly to in-
strumentation
and DUT. The
other half of the cable
as-
sembly
could
be used
for
a second
switching
card.
In Figure 3-6C,
connections
are
accomplished using a
custom-built cable
assembly
that consists of a
Model
7011-KIT-R connector
and
a
suitable
roimd
cable.
Hita-
chi cable
p/n
N2807-P/D-50TAB
is
a
50-conductor
round
cable.
Two
of these cables
can be used
to
provide
100 conductors.
The
connector has
solder
cups
to ac-
commodate
the
individual wires
of the
unterminated
cable.
Figure
3-8
provides
an
exploded view
of the con-
nector
assembly
and shows
how
the cable
is
cormected.
The
connector
end
of the resultant cable
assembly
mates
directly to
the multi-pin cormector
card.
The
im-
terrninated
end
of the cable
assembly
is
wired
directly
to
instrumentation
and DUT.
3-6
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