MAINTENANCE
Introduction
As \l,ilh any precision piece of test equipment. the
calibration
of
the
SCOt
should be checked periodically
10
insure
that
the
instrument
remains
within
specifications.
A one-year
recalibration interval is recommended to insure the SC6t
remains
within published specifications.
Service
and
Calibration
The
SCOt
should
be
relUmed
to
the $encore Factory Service
center for a complete check-out and recalibration.
~onnal
turn
around
time
is 3 working days. User calibration procedures
dealing
\lith
the front panel adjustments. such as
DC
balance.
are
found
in
theoperating instruction sectionof this
manual
The schematic and parts Jist for the
SC61
aN!
included
on
separate sheets with this manual.
Any
parts
required may be
ordered directl)' from the $encore
Fadory
Service Department.
3200
$encore Drive. Sioux Falls, $D
57107.
or
you may call
at
(605) 339-0100.
Circuit
Description
and
Calibration
Instructions
Complete circuit descriptions and calibration instructions
are
3\'ailable
from
the
Factory
Sen;ce
Department.
3200
Sencore
Drh'e.
Sioux
Falls.
SO 5HO'i,
The
cost
of
each
is
$10.00
to
cover
c:opyingand
handling.
Ask for
the
"SC61
Circuit
Description"
or
the
"SCSI
calibration
Instructions".
42
Converting
the
SC61
from
120
VAC
to
UO
VAC
operation
The
power
transformer
used in
the
SetH
has
two
primary
.....
ind-
iogs
that
allow you to
connect
them
in
parallel
for
120
VAC
oper-
ation
or
in
series
for
220
VAC
operation
for
either
a
50
or
60
Hertz
AC
line,
The
terminal
strip
near
the
AC
line fuse
has
an
extra
terminal
for this con\'ersion,
Toconvert
the
SCSI to
220
VAC, 50/00
Hertz:
l.
Disconnect
the
poVo'er
cord
from
the
AC
outlet
and
remove
""case.
2,
Remo\'e
thesolid
blue
.....
;re
from
the
terminal
strip
where
it
is
attached
to the solid black
......
ire.
Remove
the
black/white
......
ire
from
the
terminal
strip
where
it
was
attached
to the
blue/white
......ire.
3,
Connect the solid blue
wire
and
black/
......
hite
......
ire
to the
center
unused
terminal
on
the
AC
terminal
strip.
4,
Solder
all
connections
and
replace
the
SC61
case.
NOTE:
.I\farlrit
Ihe
rear
1001'1
with
another
self-slklriting
laoel
indio
cating
Ihat
the
sca~
has
been
converted
to
220
VAC
operation.
Damage
will
not
reSLlh
from
120
Volt
AC
operation.
OLlt
may
caWle
someone
to
believe
that
the
scope
has (1 defect.
,
•
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