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NI 9229/9239 16 ni.com
the modules must share a single master timebase source. Refer to
the software help for information about configuring the master
timebase source for the NI 9229/9239. Visit ni.com/info and
enter
cseriesdoc for information about C Series documentation.
The following equation 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 must remain within the appropriate data rate
range. Refer to the Specifications section for more information
about the data rate range. When using the internal master timebase
of 12.8 MHz, the result 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 value of n. When
using an external timebase with a frequency 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 support sharing timebases between modules.
f
M
256÷
n
---------------------