Chapter 5
97
Direct Digital Synthesis Option 330
Direct Digital Synthesis
Direct
Digit
al Syn
the
sis Op
tio
n
330
Figure 5-4
DDS Sequence Input Window
Notice the question marks in the
Frequency Slope
box. This is occurs when
the combination of the loop count, the initial frequency, and the end
frequency cannot be calculated correctly. If you select
OK
, a message
window comes up.
Figure 5-5
Message Dialog
For this example, selecting
OK
resulted in values shown in
Figure 5-6
.
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