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Appendix A Specifications for
© National Instruments Corporation A-3 NI PXI-4224 User Manual
Calibration
Recommended warm-up time................30 minutes
External calibration interval...................1 year
Pre-Calibration Errors
1
Pre-calibration offset error
relative to input (RTI) ............................ 865 mV max
Signal conditioning
component only...............................±50 mV typ, ±160 mV max
at a gain of 1
Pre-calibration gain error ....................... ±18,900 ppm max
Signal conditioning
component only............................... ±600 ppm typ, ±1,000 ppm max
at a gain of 1
Memory
FIFO buffer size.....................................512 samples
Data transfers .........................................DMA, interrupts,
programmed I/O
DMA modes........................................... Scatter-gather (single transfer,
demand transfer)
Configuration memory size....................512 words
Digital Triggers
Number of triggers.................................2
Purpose...................................................Start and stop trigger, gate, clock
Source.....................................................PFI 0/AI START TRIG
(front SMB connector),
PXI_TRIG<0..5> to PXI_Star
(PXI trigger bus)
Compatibility .........................................5 V/TTL
1
The pre-calibration errors apply only to users doing register level programming. Pre-calibration errors are not visible to
NI-DAQmx users.