National Instruments USB-9201, USB-9221

Sample rate (aggregate)1

USB-9201

Single channel..........................800 kS/s max

Scanning.................................. 500 kS/s

USB-9221....................................... 800 kS/s max

Operating voltage ranges2

USB-9201....................................... ±10 V (not software selectable)

USB-9221....................................... ± 60 V (not software selectable)

Maximum voltage, (AI or COM to earth ground, verified by a dielectric

withstand test)

Screw terminal................................ 250 Vrms

DSUB..............................................±60 VDC

Isolation voltage (AI or COM to earth ground, verified by a dielectric

withstand test)

Screw terminal................................ 2,300 Vrms

DSUB..............................................1,000 Vrms

Overvoltage protection

(AI to COM)...........................................±100 V

Accuracy3

1 Full performance requires the use of a USB 2.0 high-speed host controller and USB 2.0 hubs.

2 Refer to the Safety section for details about safe operating voltages.

3 Excludes noise.

Error

Percent of

Reading

Percent of

Range*

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%

USB-9221

Calibrated typ (25°C, ±5°C) ±0.04% ±0.07%

Calibrated max (0 to 60 °C) ±0.25% ±0.25%