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© National Instruments Corp. 19 NI 9229/9239
Data rate range (f
s
) using external master timebase
Minimum....................................390.625 S/s
Maximum ...................................51.2 kS/s
Data rates
1
(f
s
)................................... , n = 1, 2, …, 31
Input voltage ranges (AI+ to AI–)
2
Overvoltage protection .....................±100 V
Input coupling...................................DC
Input impedance (AI+ to AI–)..........1 MΩ
1
The data rate must remain within the appropriate data rate range. Refer to the
Understanding NI 9229/9239 Data Rates section for more information.
2
Refer to the Safety Guidelines section for more information about safe operating
voltages.
Module Nominal (V) Typical (V) Minimum (V)
NI 9229 ±60 ±62.64 ±61.5
NI 9239 ±10 ±10.52 ±10.3
f
M
256÷
n
---------------------