ADLINK DAQe-2214 - Manual (Page 8)

ii Table of Contents
4 Operation Theory .............................................................. 29
4.1 A/D Conversion.................................................................. 29
DAQ-/DAQe-2213/2214 AI Data Format ...................... 30
Software Conversion with Polling Data
Transfer Acquisition Mode (Software Polling) .... 31
Programmable Scan Acquisition Mode ......................... 32
Specifying Channels, Gains, and Input
Configurations in the Channel Gain Queue ........ 34
Trigger Modes ............................................................... 35
Bus-mastering DMA Data Transfer ............................... 45
4.2 D/A Conversion.................................................................. 47
Software Update ........................................................... 48
Timed Waveform Generation ........................................ 49
Trigger Modes ............................................................... 51
Iterative Waveform Generation ..................................... 53
Stop Modes of Scan Update ......................................... 55
4.3 Digital I/O ........................................................................... 57
4.4 General Purpose Timer/Counter Operation ....................... 57
The Basics of Timer/Counter Functions ....................... 58
General Purpose Timer/Counter Modes ....................... 58
4.5 Trigger Sources ................................................................. 64
Software-Trigger ........................................................... 64
External Analog Trigger ................................................ 64
4.6 User-controllable Timing Signals ....................................... 70
DAQ Timing Signals ..................................................... 71
Auxiliary Function Inputs (AFI) ...................................... 73
System Synchronization Interface ................................ 76
5 Calibration ......................................................................... 79
5.1 Loading Calibration Constants........................................... 79
5.2 Auto-calibration .................................................................. 80
5.3 Saving Calibration Constants............................................. 80
Warranty Policy ..................................................................... 81