Filter
Top Products
© National Instruments Corporation 17 NI USB-9237 User Guide and Specifications
Overvoltage protection
between any two terminals..................... ± 30 V
Accuracy
Gain drift ................................................ 10 ppm/°C max
Offset drift
2.5 V excitation............................... 0.6 μV/V per °C
3.3 V excitation............................... 0.5 μV/V per °C
5 V excitation.................................. 0.3 μV/V per °C
10 V excitation................................ 0.2 mV/V per °C
Channel-to-channel matching (calibrated)
Phase nonlinerarity
0 to 1 kHz........................................ <0.001°
0 to 20 kHz...................................... ± 0.1°
Input delay.............................................. 4.8 μs + 38.4/f
s
Passband
Frequency........................................ 0.45 · f
s
Flatness ........................................... 0.1 dB max
Error*
Percent of Reading
(Gain Error)
Percent of Range
(Offset Error)
†
Calibrated max (0 to 60 °C) 0.20% 0.25%
Calibrated typ (25 °C, ±5 °C) 0.05% 0.05%
Uncalibrated max (0 to 60 °C) 0.60% 0.35%
Uncalibrated typ (25 °C, ±5 °C) 0.20 0.1%
* Excluding offset null or shunt calibration.
† Range equals 25 mV/V.
Input Signal Frequency
(f
in
)
Gain Phase
Typical Maximum Maximum
0 to 1 kHz 0.15% 0.3% 0.125°/kHz · f
in
*
1 to 20 kHz 0.4% 1.1%
* f
in
is in kHz.