Tektronix 2246 User Manual

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Section 5—-2246 Operators
OPERATOR’S
CHECKS
AND
ADJUSTMENTS
INTRODUCTION
If
adjustments
are
required
beyond
the
level
of
these
operator's
checks
and
adjustments,
refer
the
instrument
to
a
qualified
service
person.
For
new
equipment
checks,
before
proceeding
with
these
instructions,
refer
to
“Preparation
for
Use,"
Section
2
of
this
manual
to
prepare
the
instrument
for
the
initial
start-up
before
applying
power.
Verify
that
the
POWER
switch
is
OFF
(out
position),
then
plug
the
power
cord
into
an
appropriate
ac-power-
source
outlet
supplying
a
voltage
within
the
operating
range
of
the
instrument's
power
supply.
During
the
performance
of
these
procedures,
if
an
improper
indication
or
instrument
malfunction
is
noted
refer
the
instrument
to
a
qualified
service
person.
INITIAL SETUP
1.
Press
in
the
POWER
switch
button
(ON)
and
allow
the
instrument
to
warm
up
(20
minutes
is
recommended
for
maximum
accuracy).
2.
Set
the
instrument
front-panel
controls
to
obtain
a
baseline
trace:
Vertical Controls
POSITION Midrange
VERTICAL MODE CH 1
VOLTS/DIV tV
Channel
1
COUPLING
GND
Horizontai Controls
POSITION
Midrange
MODE
2
A
X10
MAG
Off
A
SEC/DIV
0.1
ms
SEC/DIV
VAR
Cal
detent
Trigger Controls
A/B SELECT A
MODE AUTO
SOURCE VERT
CPLG DC
3.
Adjust
the
A
INTEN,
READOUT,
and
FOCUS
con-
trois
for
desired
brightness
and
best
trace
and
readout
definition.
4.
Adjust
the
Vertical
and
Horizontal
POSITION
con-
trols
to
center
the
trace
within
the
graticule
area.
TRACE
ROTATION
ADJUSTMENT
1.
Preset
instrument
controls
and
obtain
a
baseline
trace
as
described
in
“initial
Setup.”
Position
the
trace
vertically
to
align
it
with
the
center
horizontal
graticule
line
and
check
that
the
trace
is
parallel
with
the
graticule
line.
NOTE
Normally, the resulting baseline trace will be parallel
to
the
center
horizontal
graticule
line,
and
the
TRACE
ROTATION
adjustment
will
not
be
needed.
2.
if
the
baseline
trace
is
not
parallel
to
the
center
hor-
izontal
graticule
line,
use
a
small
straight-blade
screwdriver
or
alignment
tool
to
adjust
the
TRACE
ROTATION
pot
for
proper
alignment
of
the
trace.
PROBE LOW-FREQUENCY
COMPENSATION
Misadjustment
of
probe
compensation
is
a
possible
source
of
measurement
error.
The
attenuator
probes
are
equipped
with
compensation
adjustments.
To
ensure
the
best
measurement
accuracy,
always
check
probe
compen-
sation
before
making
measurements.
5-1

Tektronix 2246 Specifications

General

Brand	Tektronix
Model	2246
Category	Test Equipment
Language	English