National Instruments NI 9239E User Manual download pdf (Page 11)

to control sampling, all of 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 9229E/9239E.

Visit

ni.com/info and enter cseriesdoc for information about

C Series documentation.

The following equation provides the available data rates of the

NI 9229E/9239E:

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 9229E/9239E has a different set of data rates.

256÷

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National Instruments NI 9239E User Manual Page 11