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NIPXI-784xR Datasheet(PDF) 4 Page - National Instruments Corporation |
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NIPXI-784xR Datasheet(HTML) 4 Page - National Instruments Corporation |
4 / 8 page Specifications Analog Input (NI 783xR/784xR/785xR Only) Input Characteristics Number of channels NI 7830R ......................................... 4 NI 7831R/7833R/784xR/785xR ...... 8 Input modes ........................................ DIFF, RSE, NRSE (software-selectable; selection applies to all channels) Type of ADC ........................................ Successive approximation Resolution ........................................... 16 bits, 1 in 65,536 Conversion time NI 783xR/NI 784xR ......................... 4 µs NI 785xR ......................................... 1 µs Maximum sampling rate NI 783xR/NI 784xR ......................... 200 kS/s (per channel) NI 785xR ......................................... 750 kS/s (per channel) Input impedance Powered on..................................... 10 GΩ in parallel with 100 pF Powered off/overload..................... 4.0 kΩ min Input signal range ............................... ±10 V Input bias current NI 783xR ......................................... ±2 nA NI 784xR/785xR.............................. ±5 nA Input offset current NI 783xR ......................................... ±1 nA NI 784xR/785xR.............................. ±5 nA Input coupling ..................................... DC Maximum working voltage (signal + common mode) ............ Inputs should remain within ±12 V of ground Overvoltage protection Powered on ................................ ±42 V Powered off ................................ ±35 V Data transfers ..................................... DMA, interrupts, programmed I/O Accuracy Information – NI 783xR Accuracy Information – NI 784xR/785xR DC Transfer Characteristics INL NI 783xR ......................................... ±3 LSB typ, ±6 LSB max NI 784xR/785xR.............................. ±1 LSB typ, ±3 LSB max DNL NI 783xR ......................................... -1.0 to +2.0 LSB max NI 784xR/785xR.............................. ±0.4 LSB typ, ±0.9 LSB max No missing codes NI 783xR ......................................... 16 bits typ, 15 bits min NI 784xR/785xR.............................. 16 bits guaranteed CMRR, DC to 60 Hz............................. -86 dB Settling Time Crosstalk.............................................. -80 dB, DC to 100 kHz Dynamic Characteristics Bandwidth NI 783xR Small signal (-3 dB) .................... 650 kHz Large signal (1% THD) ............... 55 kHz NI 784xR/785xR Small signal (-3 dB) .................... 1 MHz Large signal (1% THD) ............... 500 kHz Analog Output (NI 783xR/784xR/785xR Only) Output Characteristics Number of channels NI 7830R ......................................... 4 NI 7831R/7833R/784xR/785xR ...... 8 Output type ......................................... Single-ended, voltage output Resolution ........................................... 16 bits, 1 in 65,536 Update time ........................................ 1.0 µs Maximum update rate ........................ 1 MS/s Type of DAC ........................................ Enhanced R-2R Data transfers ..................................... DMA, interrupts, programmed I/O R Series Intelligent DAQ – Data Acquisition and Control with Onboard Processing 4 BUY ONLINE at ni.com or CALL 800 813 3693 (U.S.) Nominal Range (V) Absolute Accuracy Relative Accuracy % of Reading Offset (µV) Noise + Quantization Temp Drift (%/°C) Absolute Accuracy at Full Scale (±mV) Resolution (µV) Positive Full Scale Negative Full Scale 24 Hours 1 Year Single Point Averaged Single Point Averaged 10.0 -10.0 0.0496 0.0507 2,542 1779 165 0.0005 7.78 2,170 217 Note: Accuracies are valid for measurements following an internal calibration. Averaged numbers assume dithering and averaging of 100 single-channel readings. Measurement accuracies are listed for operational temperatures within ±1 °C of internal calibration temperature and ±10 °C of external or factory-calibration temperature. Device Step Size Accuracy 16 LSB 4 LSB 2 LSB NI 783xR ±20.0 V 7.5 µs 10.3 µs 40 µs ±2.0 V 2.7 µs 4.1 µs 5.1 µs ±0.2 V 1.7 µs 2.9 µs 3.6 µs NI 784xR/ 785xR ±20.0 V 2.1 µs 4.2 µs 8 µs ±2.0 V 1.3 µs 1.6 µs 1.8 µs ±0.2 V 0.8 µs 1.1 µs 1.2 µs Nominal Range (V) Absolute Accuracy Relative Accuracy % of Reading Offset (µV) Noise + Quantization Temp Drift (%/°C) Absolute Accuracy at Full Scale (±mV) Resolution (µV) Positive Full Scale Negative Full Scale 24 Hours 1 Year Single Point Averaged Single Point Averaged 10.0 -10.0 0.0186 0.0228 1,591 1,029 91.6 0.0005 3.97 1,205 121 Note: Accuracies are valid for measurements following an internal calibration. Averaged numbers assume dithering and averaging of 100 single-channel readings. Measurement accuracies are listed for operational temperatures within ±1 °C of internal calibration temperature and ±10 °C of external or factory-calibration temperature. |
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