Publication No. 980935 Rev. A
3152B User Manual
The FM Composer
The FM Composer looks and feels almost like the waveform
composer except there is a major difference in what it does. If you
look at the opening screen as shown in Figure 4-53, you’ll see that
the vertical axis is marked with frequencies. You’ll see later that as
you draw waveforms on the FM composer screen, these waveforms
represent frequency changes and not amplitude changes as are
generated by the waveform composer.
The FM composer is a great tool for controlling frequency agility by
generating the agility curve as an arbitrary waveform. For example,
if you create a sine waveform, the 3152B will generate frequency-
modulated signal that will follow the sine pattern. The resolution and
accuracy of the modulated waveform is unsurpassed and can only
be duplicated by mathematical simulation. The FM composer is
loaded with many features and options so use the following
paragraphs to learn how to create and download modulating
waveforms to the 3152B using the FM Composer.
Invoke the FM Composer from Panels bar. The Wave Composer
has three sections: Commands bar, Toolbar and Waveform screen.
Refer to Figure 4-53 throughout the description of these parts.
Figure 4-57, FM Composer Opening Screen
The Menu Bar
The FM Composer menu bar is an exact duplication of the menu
bar of the Wave composer. It provides access to standard Windows
commands such as File and View.
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