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how to acquire data from NI 9205

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austin austin
austin austin 2019-2-18
编辑： austin austin 2019-2-19
Here is the data acquisition information.
ni: National Instruments NI 9205NI 9205 (DSUB) (Device ID: 'cDAQ9191-1C434351Mod1')
Analog input subsystem supports:
4 ranges supported
Rates from 0.1 to 250000.0 scans/sec
32 channels ('ai0' - 'ai31')
'Voltage' measurement type
This module is in slot 1 of the 'cDAQ-9191' chassis with the name 'cDAQ9191-1C434351'.
I want to collect data from NI 9205 for 20 seconds in two channles, and sample rate is 8000.
In labview, I can easliy collect the data. But in maltab, I tried many time, still does not work.
Below show my code, after add channels, I do not know what to do next. Is any one know what is the command to acquire the data and what is the command to set the sample rate? Thanks a lot.
s = daq.createSession('ni');
s.addAnalogInputChannel('cDAQ9191-1C434351Mod1', 'ai0', 'Voltage');
s.addAnalogInputChannel('cDAQ9191-1C434351Mod1', 'ai1', 'Voltage');

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