National Instruments USB-9233 - Page 16

NI USB-9233 User Guide and Specifications 16 ni.com
Overvoltage protection (with respect to chassis ground)
For an IEPE sensor connected
to AI+ and AI– ................................±30 V
For a low-impedance source
connected to AI+ and AI– ...............–6 to 30 V
Input delay
≤25 kS/s...........................................12.8 ÷ f
s
>25 kS/s...........................................9.8 ÷ f
s
Accuracy (0 to 60 °C)
Accuracy drift
Typical.............................................0.001 dB/°C
Maximum ........................................0.0045 dB/°C
Channel-to-channel matching
Gain
Maximum .................................0.27 dB
Typical......................................0.07 dB
Phase ( f
in
in kHz) ............................f
in
· 0.077° + 0.067°
Dynamic characteristics
Error Accuracy
Calibrated max ±0.3 dB
Calibrated typ ±0.1 dB
Uncalibrated max ±0.6 dB
f
s
Passband
Freq
Flatness
(pk-to-pk max)
Freq
Phase
Nonlinearity
≤25 kS/s 0.45 · f
s
0.05 dB 0.45 · f
s
±3.4°
>25 kS/s 0.42 · f
s
0.05 dB 0.41 · f
s
±1.3°
f
s
Stopband
Oversample
Rate
Alias-Free
Bandwidth
Freq Attenuation
≤25 kS/s 0.58 · f
s
95 dB 128 · f
s
0.42 · f
s
>25 kS/s 0.68 · f
s
92 dB 64 · f
s
0.32 · f
s