NI 9232 Operating Instructions and Specifications
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© National Instruments
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19
Understanding NI 9232 Data Rates
The frequency of a master timebase (
f
M
) controls the data rate (
f
s
)
of the NI 9232. The NI 9232 includes an internal master timebase
with a frequency of 13.1072 MHz. When using the internal master
timebase, the result is data rates of 102.4 kS/s, 51.2 kS/s, 25.6 kS/s,
17.067 kS/s, and so on down to 0.98 kS/s, depending on the
decimation rate and the value of the clock divider. However, the
data rate must remain within the appropriate data rate range. Refer
to the
section for more information about the data
rate range.
The following equation provides the available data rates of the
NI 9232:
f
s
=
where
f
s
is the data rate
f
M
is the master timebase
m
is decimation rate (64, 128, or 256)
n
is clock divider from 1 to 26
f
M
2
m n
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