Справочник Пользователя для National Instruments USB-9221

© National Instruments Corporation

If you need to clean the module, wipe it with a dry towel.

Dimensions

With combicon................................ 14.0 cm 

× 8.8 cm × 2.5 cm

........................................................ (5.52 in. 

× 3.47 in. × 1.00 in.)

25-pin DSUB .................................. 12.6 cm 

× 8.8 cm × 2.5 cm

........................................................ (4.95 in. 

× 3.47 in. × 1.00 in.)

Screw-terminal wiring............................ 12 to 24 AWG copper conductor 

wire with 10 mm (0.39 in.) of 
insulation stripped from the end

Torque for screw terminals .................... 0.5 – 0.6 N · m (4.4 – 5.3 lb · in.)

Weight

USB-9201/9221 with combicon ..... Approx. 250 g (8.8 oz)

USB-9201/9221 with DSUB .......... Approx. 245 g (8.6 oz)

Connect only voltages that are within these limits.

AI to COM

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

Channel-to-channel isolation ................. None

Channel-to-earth ground isolation

Continuous ...................................... 250 V

rms

, Measurement 

Category II

Withstand ........................................ 2,300 V

rms

, verified by a 

dielectric withstand test

Measurement Category II is for measurements performed on circuits 
directly connected to the electrical distribution system. This category refers 
to local-level electrical distribution, such as that provided by a standard 
wall outlet (for example, 115 V for U.S. or 230 V for Europe). Do not use 
this module with Measurement Category III or IV voltages.