Tektronix 2246 User Manual

Measurement
Processes
and
Applications—2246
Operators
NOTE
Calibration
constants
are
stored
for
use
in
maintain-
ing
the
instrument
calibration,
especially
the
CHI/CH2
VOLTMETER
measurements
and
the
tracking
cursor
placement
on
the
displayed
waveforms.
Performing
the
SELF
CAL
readjusts
the
calibration
constants
for
the
present
operating
tem-
perature
of
the
instrument.
If
a
SELF
CAL
is
done
when
the
instrument
is
cold,
the
calibration
con-
stants
acquired
will
not
be
correct
when
the
operat-
ing
temperature
is
reached.
The
SELF
CAL
must
then
be
done
again
after
the
warm-up
to
achieve
the
accuracy
stated
in
the
Specification
section
of
this
manual.
The
SELF
CAL
choice
found
in
either
the
CH1/CH2
VOLTMETER
menu
or
the
ATIME
menu
calibrates
the
associated
circuitry
(either
vertical
for
voltage
measure-
ments
or
horizontal
for
timing
measurements).
Any
time
the
user
requires
the
highest
degree
of
measurement
accuracy
possible
of
the
2246,
especially
the
CH1/CH2
VOLTMETER
measurements,
the
SELF
CAL
routine
may
be
run.
Both
vertical
and
horizontal
calibration
will
be
done
when
using
the
SELF
CAL
MEASUREMENTS
choice
in
the
INTERNAL
SETTINGS
MENU.
Pressing
the
down
arrow
three
times
from
the
entry
level
to
the
SERVICE
menu
underlines
the
INTERNAL
SETTINGS
MENU
label
and
displays
the
SELECT
label.
Press
SELECT
to
display
the
menu
shown
in
Figure
6-6.
INTERNAL.
SETTINGS,
MENUS
MAKE
FACTORY
SETTINGS
t
MENU
ADJUST
VERTICAL
OUTPUT
4
SELF
CAL
MEASUREMENTS
6083-20
Figure 6-6. Internal Settings Menu.
Press
the
down
arrow
three
times
again
to
underline
ine
SELF
CAL
MEASUREMENTS
choice,
then
press
the
RUN
button
that
appears
in
the
menu.
At
this
point,
the
instrument
automatically
does
a
self-characterization
of
the
CH
1
and
CH
2
Vertical
channels
first
and
then
the
horizontal
timing.
Upon
completion
of
the
procedure,
the
INTERNAL
SETTINGS
MENU
choices
are
again
displayed.
Press
QUIT
to
return
to
the
oscilloscope
operation
mode.
MAKE
FACTORY
SETTINGS.
This
menu
selection
sets
up
the
front
panel
controls
in
predefined
settings
as
shipped
from
the
factory.
SS ae a Ta A
—

Tektronix 2246 Specifications

General

Brand	Tektronix
Model	2246
Category	Test Equipment
Language	English