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NI CompactDAQ cDAQ-917 Series User Manual

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© National Instruments | 5-39
NI cDAQ-917x User Manual
80 MHz Source Mode
In 80 MHz source mode, the chassis synchronizes signals on the rising edge of the source, and
counts on the third rising edge of the source. Edges are pipelined so no counts are lost, as shown
in Figure 5-38.
Figure 5-38. 80 MHz Source Mode
External or Internal Source Less than 20 MHz
With an external or internal source less than 20 MHz, the chassis generates a delayed Source
signal by delaying the Source signal by several nanoseconds. The chassis synchronizes signals
on the rising edge of the delayed Source signal, and counts on the following rising edge of the
source, as shown in Figure 5-39.
Figure 5-39. External or Internal Source Less than 20 MHz
80 MHz Source
Synchronize Count
Source
Delayed Source
Synchronize
Count

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NI CompactDAQ cDAQ-917 Series Specifications

General IconGeneral
BrandNI
ModelCompactDAQ cDAQ-917 Series
CategoryChassis
LanguageEnglish

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