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National Instruments Corporation
21
NI USB-9219 User Guide and Specifications
Excitation level for Half-Bridge and Full-Bridge modes
Excitation level for Resistance, RTD, and Quarter-Bridge modes
Power Requirements
Current consumption from USB ............ 500 mA, max
Suspend mode ................................. 2.5 MA, max
Bus Interface
USB specification ........................... USB 2.0 Hi-Speed
Physical Characteristics
Spring-terminal wiring ........................... 18 to 28 AWG copper conductor
wire with 7 mm (0.28 in.) of
insulation stripped from the end
Weight .................................................... 258 g (9.1 oz)
Mode
Load Resistance (
Ω
)
Excitation (V)
Half-Bridge
700
2.5
Half-Bridge
240
2.0
Full-Bridge
350
2.7
Full-Bridge
120
2.2
Load Resistance (
Ω
)
Excitation (mV)
120
50
350
150
1,000
430
10,000
2,200
