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TDS 620A, 640A & 644A User Manual
2Ć1
Overview
This section describes the basic concepts of operating the digitizing oscilloĆ
scope. Understanding the basic concepts of your digitizing oscilloscope will
help you use it much more effectively.
The first part, At a Glance, quickly shows you how the oscilloscope is orgaĆ
nized and gives some very general operating instructions. It also contains an
overview of all the main menus. This part includes:
H Front Panel Map
H Rear Panel Map
H Display Map
H Basic Menu Operation
H Menu Map
The second part explains the following concepts:
H The triggering system, which establishes conditions for acquiring
signals. Properly set, triggers can convert displays from unstable
jumbles or blank screens into meaningful waveforms. See Triggering on
page 2Ć13.
H The acquisition system, which converts analog data into digital form.
See Acquisition on page 2Ć19.
H The waveform scaling and positioning system, which changes the
dimensions of the waveform display. Scaling waveforms involves inĆ
creasing or decreasing their displayed size. Positioning means moving
them up, down, right, or left on the display. See Scaling and Positioning
Waveforms on page 2Ć22.
H The measurement system, which provides numeric information on the
displayed waveforms. You can use graticule, cursor, and automated
measurements. See Measurements on page 2Ć26.
At the end of each topic, For More Information will point you to sources
where more information can be found.
To explore these topics in more depth and to read about topics not covered
in this section, see Reference. Page 3Ć1 lists the topics covered.