The National Instruments USB-6229 is a high-performance M Series multifunction data acquisition module delivering 16-bit analog input and output, digital I/O, and counter/timer functionality over USB 2.0 Hi-Speed connectivity. The device acquires up to 250 kS/s per channel across 16 differential or 32 single-ended analog inputs with input ranges of ±0.2 V, ±1 V, ±5 V, and ±10 V. Four analog output channels provide ±10 V signals at update rates up to 833 kS/s on a single channel, scaling to 625 kS/s when all four channels are active. Up to 48 digital I/O lines support TTL/CMOS logic, with 32 lines capable of hardware-timed operation at 1 MHz. Two 32-bit counters/timers operate from an 80 MHz base clock, complemented by one frequency generator channel with 10 MHz and 100 kHz base clocks and 50 ppm accuracy.
Technical Specifications
Analog Input
• 16 differential or 32 single-ended channels
• 16-bit ADC resolution with no missing codes guaranteed
• 250 kS/s maximum sample rate per channel
• ±0.2 V, ±1 V, ±5 V, ±10 V input ranges
• ±11 V maximum working voltage (signal + common mode)
• 700 kHz small signal bandwidth (−3 dB)
• 92 dB CMRR (DC to 60 Hz)
• ±100 pA input bias current
• 4,095-sample FIFO and scan list memory
• 50 ns timing resolution; 50 ppm timing accuracy
• 3,100 µV absolute accuracy on 10 V range (example)
• ±20 mA maximum input current during overvoltage protection
Analog Output
• 4 channels, 16-bit DAC resolution
• ±10 V output range
• Update rates: 833 kS/s (1 ch), 740 kS/s (2 ch), 666 kS/s (3 ch), 625 kS/s (4 ch)
• 0.2 Ω effective output resistance
• ±5 mA output current drive
• ±25 V overdrive protection
• 8,191-sample shared output FIFO
• 16-bit guaranteed monotonicity
• +1 LSB DNL
Digital I/O
• Up to 48 lines (TTL/CMOS)
• 32 lines hardware-timed at up to 1 MHz
Counters & Timers
• Two 32-bit counters/timers at 80 MHz base clock
Frequency Generator
• One channel; 10 MHz and 100 kHz base clocks; 50 ppm accuracy
– Key Features
• USB 2.0 Hi-Speed/Full-Speed connectivity
• 4,095-entry scan list memory for flexible channel sequencing
• Overvoltage protection on all analog inputs
• NI-DAQmx driver included for configuration and measurement
– Typical Applications
• Laboratory automation and benchtop instrumentation
• Design verification and prototype testing
• Manufacturing test and quality control
• Research data acquisition
– Compatibility & Integration
NI-DAQmx software framework provides standardized driver support and simplified multi-device integration.
