Introduction; Ch 1 Ich 2 Voltmeter Measurements - Tektronix 2247A Operator's Manual

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Basic Applications
Introduction
The TEKTRONIX 2247A Oscilloscope provides an accurate and flexible
measurement system. After becoming familiar with the controls, Indi-
cators , menus, and capabilities of the Instrument, you can develop
convenient methods for making special measur~ments for your own appli-
cations. The measurements given In this section are examples of typical
applications that may assist In developing efficient techniques for your
specific measurements. A brief description of how the graticule markings
are used In making measurements Is given In Section 3 of this manual.
When a procedure calls for "Initial Setup" or "Auto Setup Function," refer
to the "OPERATOR CHECKS AND ADJUSTMENTS" Section 4. Certain
signals sucn as video or aperiodic signals (non-repeating) and signals con-
taining many unrelated frequency components may require more trigger
signal conditioning and/ or holdoff to obtain the t?est display.
CH 1/CH 2 Voltmeter Measurements
The CH 1 /CH 2 Voltmeter measurements are continuous measurements of
the DC, +PEAK, -PEAK, or PK-PK values of an applied signal. The
measurement value Is displayed In the crt readout. Measurement tracking
and/or ground tracking cursors may be displayed to give the user Instant _
feedback about where on the applied signal the r:ieasurement Is being made
and the location of ground level.
NOTE
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A maximum of eight waveforms are allowed to be
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displayed
when making Voltmeter measurements oi DC, +Peak,
- Peak , or Peak-to-Peak measurements wt:,ile in. Horizontal
ALT Mode.
The ADD mode waveforms will not be displayed while
making voltage measurements if Ver(lcal Channels 1
through 4 are being displayed with their Delayed waveforms
(Horlz ALT Mode selected).
GATED modes of +PEAK, -PEAK, and PK-PK measurements may be used
to define the area of the measurement on the displayed waveform. The
position and width of the gated region Is displayed as an Intensified zone on
the A trace of the waveform display. Position of the gated region on the
waveform Is controlled by the
I+-
OR DELAY control, and width of the gated
region Is controlled by the
-+I
control.
2247 A Operators
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