Tektronix 5103N

Operating
Instructions—
51
03N
Installation
To
install
a
plug-in unit
into one
of
the plug-in compart-
ments,
align the slots in the
top and bottom
of
the plug-in
with the associated guides in
the plug-in compartment. Push
the plug-in unit
firmly
into
the plug-in
compartment
until it
locks into place.
To remove a
plug-in, pull the release
latch
on the plug-in
unit to disengage
it and pull the unitout of
the
plug-in compartment.
Plug-in units can be removed or
installed without turning
off the instrument power. It is not
necessary
that
all of the plug-in
compartments
be
filled
to
operate the instrument; the
only plug-ins needed are those
required for the measurement to
be made.
When the display unit is
calibrated in accordance with
the calibration procedure given
in the display
unit instruc-
tion manual, the
vertical and
horizontal
gain
are
standard-
ized.
This allows calibrated
plug-in units to be changed
from one plug-in
compartment to
another
without re-
calibration. However, the
basic calibration
of the
individual
plug-in units should be
checked when they
are installed
in
this system to
verify their
measurement accuracy.
See the
operating instructions section
of the plug-in unit manual
for
verification procedure.
Selection
The plug-in
versatility of the 5100-series oscilloscope
allows a
variety of display modes
with
many
different
plug-
ins.
The following
information
is
provided here
to aid
in
plug-in selection.
To produce
a single-trace display, install
a single-channel
vertical unit (or
dual-channel unit
set
for
single-channel
operation) in
either
of
the vertical
(left
or center)
compart-
ments and
a time-base unit in the horizontal (right)
com-
partment.
For dual-trace displays, either
install
a dual-
channel
vertical unit in one of the vertical
compartments or
install
a
single-channel vertical
unit in each vertical
com-
partment.
A combination of
a
single-channel
and
a
dual-
channel
vertical unit allows a three-trace display;
likewise,
a
combination of
two dual-channel vertical units allows
a
four-trace
display.
To
obtain a
vertical sweep
with the
input
signal
displayed
horizontally, insert the
time-base unit into one
of
the vertical
compartments and
the amplifier unit in the
horizontal compartment.
If
a
vertical sweep is used,
there
is
no retrace blanking;
however,
if used in
the right vertical
(center)
compartment,
internal triggering is
provided.
For X-Y
displays,
either
a
5A-series amplifier unit or a
5B-series time-base
unit
having an
amplifier channel can be
installed in the
horizontal
compartment
to accept
the
X
signal. The
Y
signal is
connected to a
5A-series amplifier
unit
installed in a
vertical compartment.
Special
purpose plug-in units may
have specific
restric-
tions regarding
the compartments
in which they can
be
installed.
This
information will be given in the
instruction
manuals
for these plug-ins.
GENERAL
OPERATING INFORMATION
Display
Switching Logic
General.
The electronic
switching for time-shared dis-
plays is produced at
the plug-in interface
within
the
main-
frame; however,
the switching logic
is
selected on the plug-
in
units. The system
allows any combination of plug-ins and
Display switch settings.
Refer
to
the individual plug-in
manuals
for specific capabilities and
operating procedures.
Vertical
Plug-in
Compartments.
When
a
vertical
plug-in
is in the
active mode
(Display button pushed in), a
logic
level is
applied
to
the switching
circuit in the
mainframe
and
a
display
from this plug-in will
occur. When two plug-
ins are both active
in the vertical
compartments,
a
multi-
trace
display will occur
(Alternate or Chopped). When no
plug-in is in
the active mode,
the signal from the
left
com-
partment
will be
displayed.
A
time-base unit operated in
one
of the vertical compartments
has
a
permanent internal
connection to apply a
logic level to the switching
circuit;
thus, a
vertical trace produced by this unit
will always be
displayed.
Horizontal Plug-in
Compartment. Alternate
or Chopped
display switching is selected
on
a
time-base
unit operated
in
the horizontal
compartment. When the
Display
switch is
out (Alt),
a negative impulse is supplied
at the
end
of
the
sweep to allow
alternate switching
between
plug-ins and
plug-in
channels. When the
Display
switch is pushed
in
(Chop),
a
chopped
display will appear if
a multi-trace
dis-
play
is required by the
plug-ins in the
vertical compart-
ments. An amplifier
plug-in unit
operated
in the
horizontal
compartment has
a permanent
internal
connection
to pro-
vide
a
chopped
display
if
it is
required.
Switching
Sequence. Four
display
time
slots are
pro-
vided
on a
time-sharing
basis.
When
two
vertical
plug-ins are
active,
each
receives
two
time
slots
and
the
switching
sequence is left,
left,
right,
right,
etc.
The
two time
slots
allotted
to each
plug-in
are
divided
between
amplifier
channels
in
a dual-trace
unit; if
two
dual-trace
plug-ins are
active,
then
the
switching
sequence is
left
Channel
1,
left
Channel
2,
right
Channel
1,
right
Channel
2,
etc. If
only
one
vertical
plug-in
is
active,
it receives
all
four
time slots.
The
switching
sequence
is the
same for
both
the
Alternate
and
Chopped
display
modes.