Non Store Displays - Tektronix 2221 Operator's Manual

Section 6-2221 Operators
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BASIC APPLICATIONS
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INTRODUCTION
This section explains how to make basic measurements using the 2221 Oscilloscope. Many of these measurements can
be obtained with either the nonstorage mode or one of the storage modes . After becoming familiar with the capabilities of
the instrument, the operator can choose the best method for making a particular measurement. Read the " Operating Con
siderations" part of this manual for information on signal connections, grounding, and other general operating information .
When the procedures call for obtaining a baseline display , refer to Initial Setup in the " Operator's Checks and Adjust
ments" part of this manual . The control settings listed in the Initial Setup procedure are considered as the initial control
setup . Alternate control settings are usually needed for making a specific measurement. The operator must determine the
correct control settings for VOLTS / DIV , SEC/ DIV , TRIGGER , and other controls to get
stable display . Only the readouts
necessary for each specific example are shown in the associated illustrations.
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OSCILLOSCOPE DISPLAYS
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The most commonly used oscilloscope displays are described in the following procedures. Verify that the POWER switch
is OFF (push button out), then plug the power cord into the ac -power - input source outlet.
NON STORE DISPLAYS NOTE
Use the following procedures to obtain the most com
monly used conventional oscilloscope displays.
Instrument warm -up time required to meet all
specification accuracies is 20 minutes.
Normal Sweep Display
1. Preset the instrument controls and obtain a baseline
display.
3. Advance the INTENSITY control until the display is
visible. If the display is not visible with the INTENSITY
control at midrange , press the BEAM FIND button and
hold it in while adjusting the Channel 1 VOLTS / DIV switch
to reduce the vertical display size. Center the compressed
display using the Vertical and Horizontal POSITION con
trols . Release the BEAM FIND button .
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2. Using the supplied 10X probe or a properly ter.
minated coaxial cable , apply a signal to the CH 1 OR X
input connector. The signal source output impedance
determines the termination required when using a coaxial
cable to interconnect test equipment.
4. Set the Channel 1 VOLTS /DIV switch and the Verti
cal and Horizontal POSITION controls to locate the display
within the graticule area .
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