National Instruments VXI-MIO Series Manual do Utilizador Página 105

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Appendix A Specifications for VXI-MIO-64XE-10
National Instruments Corporation A-11 VXI-MIO Series User Manual
Transfer Characteristics
Relative accuracy .............................. ±0.75 LSB typ, ±1 LSB max
DNL.................................................. ±0.5 LSB typ, ±1 LSB max
No missing codes .............................. 16 bits, guaranteed
Offset error
Pregain error after calibration .....±3 µV max
Pregain error before calibration...±2.2 mV max
Postgain error after calibration....±76 µV max
Postgain error before calibration.±102 mV max
Gain error (relative to calibration reference)
After calibration (gain = 1) .........±30.5 ppm of reading max
Before calibration .......................±2,150 ppm of reading max
With gain error adjusted to 0 at gain = 1
Gain 1......................................±200 ppm of reading
Amplifier Characteristics
Input impedance
Normal, powered on....................100 G in parallel with 100 pF
Powered off ................................1 k min
Overload .....................................1 k min
Input bias current .............................. ±1 nA
Input offset current............................ ±2 nA
CMRR, DC to 60 Hz
Gain = 1......................................92 dB
Gain = 2......................................97 dB
Gain = 5......................................101 dB
Gain = 10....................................104 dB
Gain = 20....................................105 dB
Gain = 50....................................105 dB
Gain = 100..................................105 dB
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