National Instruments NI 9229, Руководство по эксплуатации

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NI 9229/9239 16 ni.com
the mod u les m u st share a single master timebase so u rce. Refer to
the software help for information abo u t config u ring the master
timebase so u rce for the NI 9229/9239. Visit
ni.com/info
and
enter
c s erie s doc
for information abo u t C Series doc u mentation.
The following eq u ation provides the available data rates of the
NI 9229/9239:
f
s
=
where n is any integer from 1 to 31.
However, the data rate m u st remain within the appropriate data rate
range. Refer to the Specifications section for more information
abo u t the data rate range. When u sing the internal master timebase
of 12.8 MHz, the res u lt is data rates of 50 kS/s, 25 kS/s, 16.67 kS/s,
and so on down to 1.613 kS/s, depending on the val u e of n . When
u sing an external timebase with a freq u ency other than 12.8 MHz,
the NI 9229/9239 has a different set of data rates.
Note The cRIO-9151 R Series Expansion chassis does
not s u pport sharing timebases between mod u les.
f
M
256
÷
n
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