Instruction
Manual
A
Tektronix instruction
manual
usually
con
tains
hand-made
changes
to
diagrams
and
parts
lists,
and
sometimes
test. These
changes
are
in
general
appropriate
only
to
the
instrument
the
manual
was
prepared
for.
These
hand
made
corrections
show
changes
in the
instru
ment
that
have
ben made
after
the
printing
of
the manual.
There
is
a
serial
number
on the
frontispiece
and
on
the
warranty
page
of
this manual.
This
is
the
serial
number
of your
instrument.
Be
sure
the
manual
number
matches
the
instru
ment
number
when
you
order parts.
NOTE
Always
include
the
instrument
type
and SERIAL
NUMBER
in any corres
pondence
regarding
the instrument.
Standard
Components
Tektronix
will
supply
replacement
components
at
current
net prices.
However,
since
most
of the
components are
standard
electronic
and
radio
parts
you
can
probably
obtain
them
locally
faster
than
we
can
ship
them
to
you
from
the factory
in
Portland, Oregon.
Be
sure
to consult
the
instruction
manual
to see
what
tolerances
are
required.
Selected
Components
We
specially
select
some
of
the
components,
whose
values
must
fall
within
prescribed
limits,
by
sorting
through
our
regular
stocks.
The
components
so
selected
will
have
standard
RETMA
color
coding
showing
the
value
and
tolerance
of
the
stock they
were
selected
from,
but
they
will not
in
general be
replaceable from
dealer's
stocks.
MAINTENANCE
Checked
Tubes
To
obtain
maximum
reliability
and
perfor
mance
we
check
some
of
the
vacuum
tubes
used
in
our
instruments
for
such character
istics
as
microphonics,
balance,
transconduct
ance,
etc.
We
age
other
tubes
to
stabilize
their
characteristics.
Since
there are
no
well
defined
standards
of
tube
performance
we
have
established
our
own arbitrary
standards
and
have
developed
equipment
to
do
this checking.
These
checked
tubes
can
be
purchased
through
our
local
Field
Engineering
Offices
or
directly
from
the
factory
in
Portland,
Oregon.
Tektronix
Manufactured
Parts
Tektronix
manufactures
almost
all
of the
mechanical parts
and
some
of
the
components
used
in
the
instrument.
If
you
order a
mechanical
part
be
sure
to
describe
the
part completely
to
prevent
any unnecessary
delay
in
filling
your
order.
When
you
have
any
questions about
mechanical
parts
or
Tektronix
manufactured
components
contact
our nearest
Field
Engineer
ing
Office
or
write
to
the
Field
Engineering
Department
at
the
factory
in
Portland,
Oregon.
MECHANICAL
MAINTENANCE
Air
Filter
The
Type
515/515A
is
cooled
by
filtered
forced
air.
The
air filter
is
constructed
of
aluminum
wool
coated
with
adhesive.
If
the
filter
gets
too
dirty
it
will
restrict
the
flow
of
cooling
air
and
cause
the
instrument
to
overheat. The
filter
should be
inspected
every
three
or
four weeks
at
first
and
cleaned
if
necessary.
A
periodic
inspection
schedule
should
be
established
based on the
dust con
ditions
in
your
work
area.
To
clean
the
filter,
run
hot
water
through
it
from
the
side
that
was
inside. Or
slosh
AA
Maintenance
-
Type
515/515A
4-1
