National Instruments NI 9229, Operating Instructions Manual, Page: 18 / 34

NI 9229/9239 18 ni.com
Specifications
The following specifications are typical for the range –40 to 70 °C
u nless otherwise noted. All voltages are relative to the AI– signal
on each channel u nless otherwise noted. The specifications are the
same for the NI 9229 and the NI 9239 u nless otherwise noted.
Input Characteristics
N u mber of channels.......................... 4 analog inp u t channels
ADC resol u tion................................. 24 bits
Type of ADC..................................... Delta-Sigma (with analog
prefiltering)
Sampling mode ................................. Sim u ltaneo u s
Internal master timebase ( f
M
)
Freq u ency ................................... 12.8 MHz
Acc u racy..................................... ±100 ppm max
Data rate range ( f
s
) u sing internal master timebase
Minim u m.................................... 1.613 kS/s
Maxim u m ................................... 50 kS/s