User`s manual

4Introduction

Analog Input (AI)

X Channels:

Z DAQ-/PXI-2502: 4 single-ended

Z DAQ-/PXI-2501: 8 single-ended

X AD converter: LTC1416

X Max sampling rate: 400 KS/s

X Resolution: 14-bit

X FIFO buffer size: 2K samples

X Input range

Z Bipolar: ±10 V

Z Unipolar: 0 V to 10 V

X Over-voltage protection: Continuous, ±35 V maximum

X Input impedance: 1 GΩ / 6 pF

X Trigger modes: Pre-trigger, post-trigger, middle-trigger, and

delay trigger

X Data transfers: Programmed I/O and bus-mastering DMA

with scatter/gather

X Input coupling: DC

X Offset error:

Z Before calibration: ±40 mV max

Z After calibration: ±1 mV max

X Gain error:

Z Before calibration: ±0.4% of max output

Z After calibration: ±1 mV of max output