Tektronix 5110, Инструкция по эксплуатации

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Operating lnstructions-5110
Horizontal P l ug-ln 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 display is required by the plug-ins in the
vertical compartments. A vertical plug-in unit operated in
the horizontal compartment has a permanent internal
connection to provide a chopped display if it is required.
Dual-Sweep Displays. When a dual-sweep time-base
unit is operated in the horizontal compartment, the
alternate and chopped time-shared switching for either
the A or B sweep is identical to that for a single time-base
unit. However, if both the A and B sweeps are operating,
the oscilloscope operates in the independent pairs mode.
Under this condition, the left vertical unit is always
displayed at the sweep rate of the A time base and the right
vertical unit is displayed at the sweep rate of the B time­
base. This results in two displays that have completely
independent vertical deflection and chopped or alternate
sweep switching.
Switching Sequence. Four display time slots are
provided on a time-sharing basis. When two vertical plug­
ins are active, each receives two time slots, so the
switching sequence is: left, left, center, center, 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, center Channel 1, center
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.
Vertical Display Mode
Display On. To display a signal, the Display button of
the applicable vertical
plug-in unit must be pushed in to
activate the unit. If two plug-ins are installed in the vertical
compartments and only the signal from one of the units is
wanted, set the Display switch of the unwanted unit to Off
(button out). If neither plug-in is activated, the signal from
the left unit is displayed. Both plug-inscan be activated for
multi-trace displays.
Alternate Mode. The alternate position of the time-base
unit Display switch produces a display that alternates
between activated plug-ins and amplifier channels with
each sweep of the crt. The switching sequence is describ­
ed under Display Switching Logic in this section.
Although
the Alternate mode can be used at all sweep
rates, the Chop mode provides a more satisfactory display
at sweep rates from about one millisecond/division to five
seconds/division. At these slower sweep rates, alternate­
mode switching becomes difficult to view.
BASIC OSCILLOSCOPE APPLICATIONS
The oscilloscope and its associated plug-in units
provide a very flexible measurement system. The
capabilities of the overall system depend mainly upon the
plug-ins that are chosen. The following information
describes the techniques for making basic measurements.
These applications are not described in detail, since each
application must be adapted to the requirements of the
individual measurement. Specific
applications for the
individual plug-in units are described in the manuals for
these units. Contact your local Tektronix Field Office or
representative for additional assistance.
The following books describe oscilloscope measure­
ment techniques which can be adapted for use with this
instrument.
John D. Lenk, "Handbook of Oscilloscopes, Theory,
and Application", Prentice-Hall Inc., Englewood Cliffs,
New Jersey, 1968.
J. Czech, "Oscilloscope Measuring Techniques",
Springer-Verlag, New York, 1965.
J.F. Golding. "Measuring Oscilloscopes",
Transatlantic Arts, Inc., 1971.
Charles
H. Roth Jr.,
"Use
of the Oscilloscope", A
programmed Text, Prentice-Hall, Inc., Englewood
Cliffs, New Jersey, 1970.
Chopped Mode. The Chop position of the time-base
unit Display switch produces a display that is electronical­
ly switched between channels at a 100-kilohertz rate. The
switching sequence is discussed earlier. In general, the
Chop mode provides the best display at sweep rates
slower than about one millisecond/division or whenever
dual-trace, single-shot phenomena are to be displayed. At
faster sweep rates, the chopped switching becomes
apparent and may interfere with the display.
Peak-to-Peak Voltage Measurements—AC
To make peak-to-peak voltage measurements, use the
following procedure:
1. Set the input coupling on the vertical plug-in unit to
Gnd and connect the signal to the input connector.
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