Tektronix 2247A

.
9
|
ea
aR
Operators Familiarization
External Triggering
Any of the four vertical channels in the 2247A can be used as a source of A
and 8 trigger signals. When you need a trigger signal source different from
the one derived from displayed signals, you can use any free vertical input
channel. CH 1 and CH 2 can “condition” a wide range of signals to produce
triggers over the full vertical deflection range from millivolts to hundreds of
volts. CH 3 and CH 4 have two basic attenuation factors (0.1 and 0.5 volts
per division), making them especially useful for triggering on and viewing
digital signal levels.
Auto Setup
Pressing the AUTO SETUP button automatically sets up the front-panel
controls based on the characteristics of the applied signal. The voltage
amplitude, sweep settings, trigger parameters, vertical and horizontal
positioning, and trace intensities are preset to produce a usable waveform
display. The waveform is horizontally centered and vertically positioned
within
the
crt
display.
The
voltage
and
frequency
characteristics
of
the
Input signal must be within the limits of the 2247A specifications given In
Section 6.
Auto-setup action for each front-panel control Is shown In Appendix A.
Min Setup
MIN
SETUP
is
only
available
on
instruments
Serial
Numbered
B020100
or above.
Pressing
and
holding
the
Auto-Setup
button
until
the
instrument
returns
to
normal
operation
initiates
the
MIN
SETUP
function.
This
automatically
sets
up the
front-panel
controls
but
leaves
many
of
the
controls
unchanged
from
what
the
user
has
set.
MIN
SETUP
action
for
each
front-panel
control
is
shown
in
Appendix
A.
MENU SYSTEM OPERATION
This
subsection
provides
operating
details
of
the
measurement
menus,
service
menus,
and
Store/Recall
Setup
menus.
2247A
Operators
3-5