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Simpson 1000 - Page 23

Simpson 1000
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OPERATING
INSTRUCTIONS
TOGGLES
on
the
chart
indicate
a
switch
position.
The
switches
appear
in
the
same
sequence,
from
left
to
right,
as
the
digits
on
the
chart.
The
first
digit
is
the
position
for
the
A
toggle,
the
second
digit
for
the
B
toggle,
and
so
on
across
the
group
of
12
tog-
gle
switches.
Start
each
arrangement
of
toggle
switch
set-
tings
by
pulling
all
the
levers
to
set
all
switches
at
0.
Then
set
each
toggle
to
the
numbered
position
indicated
by
its
digit
on
the
tube
chart.
SUB
MINIATURE
ORIENTATION
All
tubes
are
properly
oriented
when
they
fit
in
their
sock-
ets,
except
for
sub-miniature
rectangular
types.
To
connect
the
elements
of
these
tubes
to
the
proper
tube
socket
ter-
minals,
hold
the
tube
so
that
its
red
index
mark
corres-
ponds
to
the red
dot
on
the
socket;
then
insert
each
lead
next
to
the
red
dot.
Use
as
many
socket
terminals
as
re-
quired
for
the
leads
coming
out
the
base
of
the
tube.
OHMMETER
CIRCUIT
After
the
tube
filament
has
had
an
opportunity
to
warm
up,
press
the
buttons
listed
on
the
chart
under
the
heading
SHORTS.
Press
these
down
one
at
a
time
and
read
the
re-
sistance
on
the
OHMS
scale
of
the
meter.
When
you
press
down
any
of
these
push
buttons,
you
trans-
fer
one
tube
element
to
one
side
of
the
ohmmeter
circuit.
All
the
other
tube
elements
are
connected
to
ground,
which
is
the
other
side
of
the
ohmmeter
circuit.
If
the
meter
in-
dicates
a
value
of
250K
ohms
or
more
for
each
test,
the
tube
should
be
satisfactory
for
use
according
to
defined
21

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