ADLINK PCI-9524 - Manual (Page 10)

x Table of Contents
PCI-9524 ADLINK Technology Inc.
User’s Manual Copyright 2008
3.3.5 Interfacing Isolated DI with External Devices ........... 45
4 Operation Theory .............................................................. 47
4.1 PCI-9524 Function Diagram .............................................. 47
4.2 Analog Input Channels....................................................... 48
4.2.1 Signal Acquisition and Processing Flow ................... 48
4.2.2 How to Define a 1 in 200,000 Count Resolution....... 49
4.2.3 Data Rate versus Sampling Rate ............................. 51
4.2.4 Auto-scan, Multiplexing and Settling Time................ 51
4.2.5 Power Line Noise Rejection...................................... 53
4.2.6 Excitation and Remote-sensing ................................ 54
4.2.7 Thermal EMF, 1/f Noise and Auto-zero .................... 55
4.2.8 Warm-up Requirement ............................................. 58
4.2.9 Post-processing IIR Digital Filter .............................. 58
4.2.10 RAW Data Format .................................................... 61
4.2.11 AD Data Format........................................................ 62
4.2.12 Data Transfer Modes ................................................ 64
4.2.13 Trigger Modes........................................................... 66
4.3 D/A Conversion.................................................................. 67
4.4 Isolated Encoder Input Channels....................................... 67
4.5 Isolated Pulse-Command Generator ................................. 69
4.6 Isolated Digital I/O.............................................................. 69
4.6.1 Isolated Digital Inputs ............................................... 70
4.6.2 Isolated Digital Outputs............................................. 70
4.7 Trigger Sources ................................................................. 70
4.7.1 Software-Trigger ....................................................... 70
4.7.2 External Digital Trigger ............................................. 70
4.7.3 Pulse Comparator Trigger ........................................ 71
4.7.4 Position Comparator Trigger..................................... 72
5 Calibration ......................................................................... 73
5.1 Loading Calibration Constants........................................... 73