Bus Interface; Power Requirements; Physical Characteristics - National Instruments 779640-01 User Manual

Bus Interface

Power Requirements

Physical Characteristics

© National Instruments Corporation
Resolution .............................................. 32 bits
Counter measurements ........................... Rising edge counting
Maximum input frequency..................... 5 KHz
Minimum high pulse width .................... 20 μs
Minimum low pulse width ..................... 180 μs
USB specification .................................. USB 2.0 full-speed (12 Mb/s)
USB
Input voltage ................................... 4.5 to 5.25 VDC in
Active current ................................. 150 mA max
Suspend current............................... 350 μA typ
Dimensions
Without connectors ......................... 6.35 cm × 8.51 cm × 2.31 cm
With connectors .............................. 8.18 cm × 8.51 cm × 2.31 cm
I/O connectors ........................................ USB series B receptacle,
Screw-terminal wiring............................ 16 to 28 AWG copper conductor
Torque for screw terminals .................... 0.22 – 0.25 N · m
Weight
With connectors .............................. Approx. 87 g (3.1 oz)
Without connectors ......................... Approx. 64 g (2.3 oz)
configured state
(2.50 in. × 3.35 in. × 0.91 in.)
(3.22 in. × 3.35 in. × 0.91 in.)
(2) 16 position (screw terminal)
plug headers
wire with 10 mm (0.39 in.) of
insulation stripped from the end
(2.0 – 2.2 lb · in.)
15 USB-6525 User Guide and Specifications