Tektronix 2247A

Controls, Connectors, and Indicators
2-24
NOTE
When
the
memory-backup
battery
is
dead
or
has
just
been
replaced,
the
last
measurement
is
initialized
to
\—
SEC
-
at
power
on.
The
battery
must
be
replaced
by
a
qualified
service
person.
Measurement
Select
Buttons—Calls
up
Measurement
selection
menus.
Measurements
are
selected
from
the
list
of
menu
items
at
the
right
side
of
the
menu
display.
VOLTMETER
CH1/CH2—Displays
the
voltmeter
menu.
The
selected
measurement
mode
Is
shown
by an
underlined
menu
item.
Tracking
cursors
(measurement,
ground,
trigger
level)
may
be
displayed
to
show
the
measurement
points
on
the
displayed
signal
(see
CURSORS).
CURSOR
VOLTS—Calls
up
the
menu
for
selecting
cursor
volts
measurement
modes.
The
first
page
of
the
menu
lets
you
select
positionable
cursors;
page
2
Is
for
selecting
the
auto-tracking
SmartCursors®.
TIME—Calls
up
the
menu
to
select
the
type
of
timing
measurement
to
be
made.
Menu
choices
are
listed
on
the
right
side
of
the
screen.
COUNTER/TIMER—Calls
up
the
menu
to
select
the
type
of
counter/
timer
measurement
to
be
made.
Menu
cholces
are
listed
on
the
right
side
of
the
screen,
STORE/RECALL
SETUP
Button—Calls
up
store
and
recall
menus
that
let
you
store
and
recall
up
to
20
front-panel
setups.
When
you
Press
the
STORE/RECALL
button,
the
STORE/RECALL
menu
(factory
settings
default)
or
the
RECALL
ONLY
menu
Is
displayed
depending
on
how
you
set
the
SERVICE
mode
CONFIGURE
menu.
See
“Service
Menu
Features”
in
Section
3
to
set
CONFIGURE
menu,
AUTO
SETUP
Button—Press
to
automatically
set
up the
front-panel
controls
to
produce
a
usable
crt
display.
Setups
are
based
on
the
characteristics
of
the
applied
signals.
The
voltage
and
frequency
characteristics
of
the
input
signal
must
be
within
the
limits
of
the
2247A
specifications.
2247A Operators
Ea
al
r
ae
OD