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Appendix A Specifications
©
National Instruments Corporation A-3 PCI-6023E/6024E/6025E User Manual
Transfer Characteristics
Relative accuracy ................................... ±0.5 LSB typ dithered,
±1.5 LSB max undithered
DNL ....................................................... ±0.5 LSB typ, ±1.0 LSB max
No missing codes ................................... 12 bits, guaranteed
Offset error
Pregain error after calibration......... ±12 µV max
Pregain error before calibration ...... ±28 mV max
Postgain error after calibration ....... ±0.5 mV max
Postgain error before calibration..... ±100 mV max
Gain error (relative to calibration reference)
After calibration (gain = 1) ............. ±0.02% of reading max
Before calibration ........................... ±2.75% of reading max
Gain ≠ 1 with gain error
adjusted to 0 at gain = 1................. ±0.05% of reading max
Amplifier Characteristics
Input impedance
Normal powered on ........................100 GΩ in parallel with 100 pF
Powered off.....................................4 kΩ min
Overload.......................................... 4 kΩ min
Input bias current ................................... ±200 pA
Input offset current.................................±100 pA
CMRR (DC to 60 Hz)
Gain 0.5, 1.0.................................... 85 dB
Gain 10, 100.................................... 90 dB
PCI.book Page 3 Wednesday, September 16, 1998 9:09 AM