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Baseband Signal
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Baseband Signal
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Baseband Signal
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Baseband Signal
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© National Instruments Corporation
of eight times the sample rate, as shown in Figure 6-5c. Still, images remain
and they must be filtered out. Each output channel of the PCI-4451 has
discrete-time (switched-capacitor) and continuous-time analog filters that
remove the high-frequency images, as shown in Figure 6-5d.
Images
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a. Spectrum of Sampled Signal
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b. Spectrum of Signal After Digital Filter
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c. Spectrum of Signal After DAC
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d. Spectrum of Signal After Analog Filters
Figure 6-5. Signal Spectra in the DAC
Chapter 6
Images After the Digital Filter
Images After the DAC
6-11
Theory of Analog Operation
16 F
Frequency
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16 F
Frequency
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16 F
Frequency
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16 F
Frequency
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PCI-4451/4452 User Manual
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