User's Manual

NI USB-9215 Series User Guide and Specifications 18 ni.com
Conversion time
Channel 0 only.................................4.4 μs
Channels 0 and 1 .............................6 μs
Channels 0, 1, and 2 ........................8 μs
Channels 0, 1, 2, and 3 ....................10 μs
Accuracy
Stability
Offset drift .......................................60 μV/°C
Gain drift .........................................10 ppm/°C
CMRR (at 60 Hz) ...................................–73 dB min
Input bandwidth (–3 dB).........................420 kHz min
Input impedance
Resistance
With screw terminal .................1 GΩ
With BNC (between any
two AI– terminals) ...................200 kΩ
Capacitance......................................25 pF
Input bias current ....................................10 nA
Input noise
RMS.................................................1.2 LSB
rms
Peak-to-peak....................................7 LSB
Crosstalk .................................................–80 dB
Error
Percent of
Reading
(Gain Error)
Percent of
Range (Offset
Error)
*
Calibrated max (0 to 60 °C) 0.2% 0.082%
Calibrated typ (25 °C, ±5 °C) 0.02% 0.014%
Uncalibrated max (0 to 60 °C) 1.05% 0.82%
Uncalibrated typ (25 °C, ±5 °C) 0.6% 0.38%
*
Range equals 10.4 V.