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779310-01 Datasheet(PDF) 4 Page - National Instruments Corporation |
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779310-01 Datasheet(HTML) 4 Page - National Instruments Corporation |
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4 / 6 page  24-Bit, 204.8 kS/s Dynamic Signal Acquisition and Generation 4 BUY ONLINE at ni.com or CALL (800) 813 3693 (U.S.) Specifications Typical for 25 °C unless otherwise noted. Analog Input Number of simultaneously sampled input channels NI 4461 ........................................... 2 NI 4462 ........................................... 4 Input configuration.............................. Differential or pseudodifferential (50 Ω between negative input and chassis ground), each channel independently software-selectable Input coupling ..................................... AC or DC, each channel independently software-selectable A/D converter (ADC) resolution .......... 24 bits ADC type ............................................. Delta-sigma Sample rates (fs), samples per second (S/s) ................... 1 kS/s to 204.8 kS/s in 181.9 µS/s increments, maximum Input Signal Ranges Amplifier Characteristics Input coupling ..................................... AC or DC, software-selectable Common-mode rejection ratio (CMRR) ............................................ 80 dB with 0 dB gain; up to 105 dB for higher gain Dynamic Characteristics AC coupling -3 dB cutoff frequency.................... 3.4 Hz -0.1 dB cutoff frequency................. 22.6 Hz AI flatness ........................................... ±0.08 dB, gain ≥0 dB, 20 Hz to 92.2 kHz AI dynamic range ................................ 118 dBFS, 0 dB gain, 51.2 kS/s THD, balanced source......................... -107 dBc up to 20 kHz, -104 dBc up to 92.2 kHz Crosstalk (channel separation) ........... -138 dB at 1 kHz AI interchannel gain mismatch........... 0.003 dB up to 92.2 kHz Integrated Electronic Piezoelectric (IEPE) Current ............................................ 0, 4, or 10 mA, each channel independently software-selectable Compliance ..................................... 24 V min Channel input impedance with IEPE enabled ............................... 1 M Ω || 240 pF, pseudodifferential Current noise ..........................................<300 pA ⁄ Hz Transducer Electronic Data Sheet (TEDS) Compatibility The PCI-4461, PCI-4462, and PXI-4462 inputs work with transducer electronic data sheet (TEDS) sensors according to the IEEE 1451 Standard. For more information about TEDS, go to ni.com/info and enter rdteds. Analog Output (NI 4461) Output Characteristics Number of output channels ................ 2, simultaneously sampled Output configuration ........................... Differential or pseudodifferential (50 Ω to chassis ground on shield), each channel independently software-selectable DAC resolution .................................... 24 bits DAC type ............................................. Delta-sigma Update rates (fs) ................................. 1 kS/s to 204.8 kS/s in 181.9 µS/s increments, maximum Output Signal Range Voltage Output Short circuit protection ....................... Indefinite protection between positive and negative Minimum working load....................... 600 Ω Dynamic Characteristics Image rejection ................................... 75 dB min < 768 kHz 66 dB min > 768 kHz AO Flatness 20 Hz to 20 kHz............................... ±0.008 dB max 20 Hz to 92.1 kHz............................ ±0.1 dB max AO dynamic range............................... 113 dBFS, 0 dB attenuation, 102.5 kS/s (30 kHz bandwidth) AO THD ............................................... -97 dBc up to 20 kHz AO interchannel gain mismatch ......... 0.03 dB, 20 Hz to 92.1 kHz Internal Frequency Timebase Characteristics Accuracy.............................................. ±20 ppm, over operating temperature range Gain Log (dB) Full-Scale Range (Peak) -20 ±42.4 V -10 ±31.6 V 0 ±10.0 V +10 ±3.16 V +20 ±1.00 V +30 ±0.316 V Input Impedance Differential Configuration Pseudodifferential Configuration Between positive input and chassis ground 1 M Ω || 217 pF 1 M Ω || 217 pF Between negative input and chassis ground 1 M Ω || 229 pF 50 Ω Specification Low-Frequency Alias Rejection Disabled Alias-free bandwidth (BW), (passband) DC to 0.4535 fs Alias rejection, minimum 120 dBc Attenuation (dB) Full-Scale Range (Vpk)1 40 ±0.1 20 ±1.0 0 ±10.0 1Each output channel range is independently software-selectable. |
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