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Simpson 1000 - Special Connections

Simpson 1000
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THEORY
OF
OPERATION
VALUE
in
the
chart.
After
the
test
is
complete,
press
the
red
RELEASE
button
at
the
left
hand
side
of
this
row,
and
all
the
other
push
switches
will
return
to
their
up
position.
A
THROUGH
J
SWITCHES
ARE
TRANSFERS
Each
push
switch
in
the
group
from
A
through
J
operates
as
a
transfer
switch
for
one
tube
element
according
to
its
base
pin
number.
The
A
switch
controls
connections
to
all
#1
socket
terminals;
the
B
switch
to
all
the
#2
socket
ter-
minals;
and
in
sequence
through
the
I
switch
for
the
#9
terminal
of
the
noval
socket
and
the
center
of
the
loktal
socket.
The
J
switch
controls
the
connections
to
the
cap
lead.
SPECIAL
CONNECTIONS
There
are
several
socket
terminal
connections
which
do
not
follow
the
standard
numbering
system
(clockwise
from
an
index,
looking
at
the
bottom).
In
the
Model
1000,
these
special
connections
are
made
as
follows.
The
pilot
light
socket
in
the
center
of
the
7-pin
socket
is
connected
to
the
#1
and
#7
circuits.
The
center
of
the
loktal
socket
is
connected
to
the
#9
circuit.
The
sub-miniature
rectangular
socket
has
no
numbers
as-
signed
to
its
seven
terminals.
In
the
Model
1000,
these
terminals
are
connected
as
if
they
were
numbered
from
7
through
1,
beginning
at
the
red
index
dot.
36

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