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National Instruments cDAQ-9133 User Manual

National Instruments cDAQ-9133
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© National Instruments | 5-23
NI cDAQ-9132/9133/9134/9135/9136/9137 User Manual
Implicit Buffered Two-Signal Edge-Separation Measurement
Implicit buffered and single two-signal edge-separation measurements are similar, but implicit
buffered measurement measures multiple intervals.
The counter counts the number of rising (or falling) edges on the Source input occurring between
an active edge of the Gate signal and an active edge of the Aux signal. The counter then stores
the count in the FIFO. On the next active edge of the Gate signal, the counter begins another
measurement. The STC3 transfers the sampled values to host memory using a high-speed data
stream.
Figure 5-24 shows an example of an implicit buffered two-signal edge-separation measurement.
Figure 5-24. Implicit Buffered Two-Signal Edge-Separation Measurement
Sample Clocked Buffered Two-Signal Separation Measurement
A sample clocked buffered two-signal separation measurement is similar to single two-signal
separation measurement, but buffered two-signal separation measurement takes measurements
over multiple intervals correlated to a sample clock. The counter counts the number of rising (or
falling) edges on the Source input occurring between an active edge of the Gate signal and an
active edge of the Aux signal. The counter then stores the count in the FIFO on a sample clock
edge. On the next active edge of the Gate signal, the counter begins another measurement. The
STC3 transfers the sampled values to host memory using a high-speed data stream.
Figure 5-25 shows an example of a sample clocked buffered two-signal separation
measurement.
Figure 5-25. Sample Clocked Buffered Two-Signal Separation Measurement
SOURCE
Counter Value
Buffer
AUX
GATE
123 123 123
3
3
3
3
3
3
SOURCE
Counter Value
Buffer
AUX
GATE
123 12 3 123
3 3
3
Sample
Clock

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National Instruments cDAQ-9133 Specifications

General IconGeneral
BrandNational Instruments
ModelcDAQ-9133
CategoryController
LanguageEnglish

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