ADLINK USB-1903 User Manual

Page 8

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3 Installing the USB-1900 Series Module........................... 31

3.1

Connecting the USB-1900 Series Module ......................... 31

3.2

Device ID ........................................................................... 32

3.3

Hardware Configuration ..................................................... 33

4 Operation ........................................................................... 35

4.1

Signal Function .................................................................. 35

4.2

A/D Conversion.................................................................. 36

4.2.1

Analog Input Circuitry ............................................... 37

4.2.2

AI Data Format ......................................................... 37

4.2.3

Software Conversion with Polling Data Transfer
Acquisition Mode (Software Polling) ......................... 38

4.2.4

Continuous Acquisition (Scanning) Mode................. 38

4.2.5

Analog Input Triggering ............................................ 41

4.3

Trigger Sources ................................................................. 41

4.3.1

Software Triggering .................................................. 41

4.3.2

External Analog Triggering ....................................... 42

4.3.3

External Digital Triggering ........................................ 43

4.4

Trigger Modes.................................................................... 43

4.4.1

Post-Trigger Acquisition Mode (no retriggering) ....... 44

4.4.2

Delayed-Trigger Acquisition Mode
(no retriggering) ........................................................ 44

4.4.4

Gated Trigger............................................................ 46

4.5

D/A Conversion.................................................................. 47

4.5.1

Bipolar Output Modes ............................................... 48

4.5.2

Software Update ....................................................... 48

4.5.3

Waveform Generation............................................... 48

4.5.4

Waveform Trigger Sources....................................... 51

4.5.5

Waveform Generation Trigger Modes ...................... 52

4.6

Programmable Function I/O............................................... 56

4.6.1

TTL DI/DO ................................................................ 56

4.6.2

General Purpose Timer/Counter............................... 57

4.7

Basic Timer/Counter Function ........................................... 57

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