National Instruments NI USB-9201, Руководство пользователя и технические характеристики, Страница: 15 / 21

© National Instruments Corporation 15 NI USB-9201/9221 User Guide and Specifications
Operating voltage ranges
1
NI USB-9201 .................................. ±10 V (not software selectable)
NI USB-9221 .................................. ± 60 V (not software selectable)
Maximum voltage, (AI or COM to earth ground, verified by a dielectric
withstand test)
Screw terminal ................................ 250 V
rms
, 5 seconds max
D-SUB ............................................ ±60 VDC
Isolation voltage (AI or COM to earth ground, verified by a dielectric
withstand test)
Screw terminal ................................ 2,300 V
rms
, 5 seconds max
D-SUB ............................................ 1,000 V
rms
, 5 seconds max
Overvoltage protection
(AI to COM)........................................... ±100 V
Accuracy
2
1
Refer to the Safety section for details about safe operating voltages.
2
Excludes noise.
Error
Percent of
Reading
(Gain Error)
Percent of
Range
(Offset
Error)*
NI USB-9201
Calibrated typ (25 °C, ±5 °C) ±0.04% ± 0.07%
Calibrated max (0 to 60 °C) ±0.25% ± 0.25%
Uncalibrated typ (25 °C, ±5 °C) ±0.26% ± 0.46%
Uncalibrated max (0 to 60 °C) ±0.67% ±1.25%
NI USB-9221
Calibrated typ (25 °C, ±5 °C) ±0.04% ±0.07%
Calibrated max (0 to 60 °C) ±0.25% ±0.25%
Uncalibrated typ (25 °C, ±5 °C) ±0.26% ±0.43%
Uncalibrated max (0 to 60 °C) ±0.67% ±1.06%
* Range equals 10.53 V for the NI USB-9201, 62.50 V for the NI USB-9221.