Chapter 4
Analog Input
AI Sample Clock
AI Convert Clock
Channel Measured
NI USB-621x User Manual
AI Sample Clock
AI Convert Clock
Channel Measured
Figure 4-10. AI Sample Clock Too Fast For AI Convert Clock;
AI Sample Clock Pulses Are Gated Off
AI Sample Clock
AI Convert Clock
Channel Measured
Figure 4-11. AI Convert Clock Too Fast For AI Sample Clock;
AI Convert Clock Pulses Are Gated Off
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Sample #1
Figure 4-12. AI Sample Clock and AI Convert Clock Improperly Matched;
AI Sample Clock
AI Convert Clock
Channel Measured
Figure 4-13. AI Sample Clock and AI Convert Clock Properly Matched
4-18
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Sample #1
Sample #2
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1 2 3
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Sample #1
Sample #2
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3
Sample #2
Leads To Aperiodic Sampling
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Sample #1
Sample #2
1 2 3
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Sample #3
1 2 3
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Sample #3
3
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Sample #3
1 2 3
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Sample #3
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