Tektronix 2246 User Manual

Measurement
Processes
and
Applications—2246
Operators
Table 6-1
Measurement
Signal
Source
Selection
Menu
CH1/CH2
|
ATIME
VOLTMETER
CH!
CH1
CH1
CH2
CH2
CH2
CH3
CH3
CH4 CH4
ADD
ADD
(TO
A
CHANNEL
MENU)
(BACK
TO
DELAY
CHANNEL
MENU)
“my
=
"ting
delay-time
channels,
a
channel
that
is
selected
in
the
menu
is
turned
on
if
not
previously
selected,
and
it
remains
displayed
when
deselected
as
the
measurement
source
channel.
Any
channel
traces
turned
on
that
are
not
wanted
in
the
display
must
be
turned
off
using
the
VERTI-
CAL
MODE
buttons.
if
no
measurement
is
active,
pressing
the
SET
MEAS'MT
CHANNEL
button
causes
the
message
“SELECT
A
MEASUREMENT”
to
appear
in
the
top
line
of
the
display
for
two
seconds.
RECALLING THE LAST
MEASUREMENT MODE
Press
LAST
MEAS’MT
to
recall
the
last
selected
measurement
mode
if
no
measurement
mode
is
active.
The
LAST
MEAS’MT
button
may
also
be
used
to
reinitial-
ize
an
active
measurement
mode.
A
press
of
the
button
cancels
the
active
measurement,
and
then
recalls
it
in
its
initialized
state.
This
feature
is
quite
useful
for
returning
VOLTS
cursors
to
their
initialized
positions
after
they
have
been
adjusted
away.
CH1/CH2 VOLTMETER
Press
CH1/CH2
VOLTMETER
to
display
the
choices
of
menu
1
shown
in
Figure
6-1.
NOTE
if
a
single
channel
is
selected
for
display,
that
is
the
default
measurement
source
channel.
if
both
CH
1
and
CH
2
are
being
displayed,
the
default
measure-
ment
source
channel
upon
each
initialization
is
CH
1.
Use
the
SET
MEAS’MT
CHANNEL
function
to
assign
CH
2
as
the
measurement
channel.
Turn
off
the
CH1
display
if
CH2
is
the
desired
default
measurement
source
channel.
6-2
Voltmeter
Measurements
Page
1
DC—Press
to
measure
the
average
DC
level
of
the
measurement
channel
waveform.
+PEAK-—-Measures
the
most
positive
(screen-relative)
voltage
in
the
applied
waveform.
—-PEAK—Measures
the
most
negative
(screen-relative)
voltage
in
the
applied
waveform.
PK-PK-——-Measures
the
peak-to-peak
voltage
of
the
applied
waveform.
SELF
CAL-—Self
characterizes
the
vertical
system.
SELF
CAL
may
be
performed
at
any
time.
Suggested
times
are:
after
a
warmup
period,
whenever
the
ambient
operating
temperature
changes
by
+15°C,
and
just
prior
to
making
any
voltmeter
measurements
requiring
the
best
possible
accuracy.
(TO
GATED
MEASMT
MENU)—Selects
the
gated-
measurement
menu.
Voltmeter
Measurements
Page
2,
GATED
Measurements
The
oscilloscope
must
be
properly
triggered
for
gated
measurements.
If
there
is
no
trigger
signal
in
NORM
Trigger
MODE,
the
message
“LO
REP
RATE
—
STILL
TRYING”
will
be
displayed.
If
there
is
no
trigger
signal
in
AUTO
LEVEL
or
AUTO
Trigger
MODE,
the
readout
value
will
be
unstable
and
meaningless.
GATED
+PEAK—Press
to
measure
the
most
positive
(screen-relative)
voltage
in
the
gated
(intensified)
portion
of
the
waveform.
REV FEB 1988
Mer
genen
perm,
eam ee HA EE PRATT EV PETAR TAA

Tektronix 2246 Specifications

General

Brand	Tektronix
Model	2246
Category	Test Equipment
Language	English