National Instruments PCIe-6323 - Aggregate Versus Single Channel Sample Rates

© National Instruments | 4-47
X Series User Manual
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AI Reference Trigger Signal
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AI Pause Trigger Signal
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Note (NI PXIe-6386/6396 Devices) AI tasks do not support pause triggering on
PXIe-6386 and PXIe-6396 devices. For more information about special
considerations for these devices, go to ni.com/info and enter the Info Code
smio14ms.
Signals with an
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support digital filtering. Refer to the
PFI Filters section of Chapter 8, PFI, for
more information.
Aggregate versus Single Channel Sample Rates
Simultaneous MIO X Series devices have one ADC per channel so the single channel maximum
sample rate can be achieved on each channel. The maximum single channel rate is the fastest
you can acquire data on the device from a single or multiple channels and still achieve accurate
results.
The total aggregate determines the maximum bus bandwidth used by the device. The total
aggregate sample rate is the product of the maximum sample rate for a single channel multiplied
by the number of AI channels that the device support.
Table 4-8 shows the single channels and total aggregate rates for Simultaneous MIO X Series
devices.
Table 4-8. Analog Input Rates for Simultaneous MIO X Series Devices
Simultaneous MIO
X Series Device
Analog Input Rate
Single Channel Total Aggregate
NI 6346 500 kS/s 4 MS/s
NI 6349 500 kS/s 16 MS/s
NI 6356 1.25 MS/s 10 MS/s
NI 6358 1.25 MS/s 20 MS/s
NI 6366 2 MS/s 16 MS/s
NI 6368 2 MS/s 32 MS/s
NI 6374 3.57 MS/s 14.28 MS/s
NI 6376 3.57 MS/s 28.56 MS/s
NI 6378 3.57 MS/s 57.12 MS/s
NI 6386 14.29 MS/s
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114.29 MS/s
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