National Instruments PCI-1200 Manual de usuario Pagina 70

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Appendix A Specifications
PCI-1200 User Manual A-2 © National Instruments Corporation
Max working voltage..............................In DIFF or NRSE
(signal + common mode)........................mode, the negative
input/AISENSE should remain
within ±5 V of AGND (bipolar),
or 5 to 2 V (unipolar). The
positive input should remain
within the 5 to +10 V range.
Overvoltage protection ...........................±35 V powered on,
±25 V powered off
Inputs protected ...............................ACH<0..7>
FIFO buffer size......................................4,096 samples
Data transfers..........................................DMA, interrupts,
programmed I/O
DMA mode .............................................Scatter gather
Dither ......................................................Available
Transfer Characteristics
Relative accuracy....................................±0.5 LSB typ dithered,
±1.5 LSB max undithered
DNL ........................................................±1 LSB max
No missing codes....................................12 bits, guaranteed
Offset error
Pregain error after calibration..........10 µV max
Pregain error before calibration.......±20 mV max
Postgain error after calibration ........1 mV max
Postgain error before calibration .....±200 mV max
Gain error (relative to calibration reference)
After calibration...............................0.02% of reading max
Before calibration ............................±2% of reading max
Amplifier Characteristics
Input impedance
Normal powered on .........................100 G in parallel with 50 pF
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