Appendix A Specifications
©
National Instruments Corporation A-3 PCI-6023E/6024E/6025E User Manual
Transfer CharacteristicsRelative 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 CharacteristicsInput 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