National Instruments Data Acquisition Device E Series - Manual (Page 8)

Contents
E Series User Manual x ni.com
Chapter 3
Analog Output
Analog Output Circuitry................................................................................................ 3-1
DACs............................................................................................................... 3-1
DAC FIFO....................................................................................................... 3-1
AO Sample Clock ........................................................................................... 3-2
Polarity and Reference Selection .................................................................... 3-2
Reference Selection ....................................................................................................... 3-2
Polarity Selection........................................................................................................... 3-3
Reglitch Selection.......................................................................................................... 3-3
Minimizing Glitches on the Output Signal.................................................................... 3-3
AO Data Generation Methods ....................................................................................... 3-4
Software-Timed Generations .......................................................................... 3-4
Hardware-Timed Generations......................................................................... 3-4
Buffered ............................................................................................ 3-4
Non-Buffered.................................................................................... 3-5
Analog Output Triggering ............................................................................................. 3-5
AO Start Trigger Signal .................................................................................. 3-6
Using a Digital Source...................................................................... 3-6
Using an Analog Source ................................................................... 3-6
Outputting the AO Start Trigger Signal ........................................... 3-6
AO Pause Trigger Signal ................................................................................ 3-7
Using a Digital Source...................................................................... 3-7
Using an Analog Source ................................................................... 3-7
Connecting Analog Output Signals ............................................................................... 3-8
Waveform Generation Timing Signals.......................................................................... 3-9
AO Start Trigger Signal .................................................................................. 3-9
Using a Digital Source...................................................................... 3-9
Using an Analog Source ................................................................... 3-10
Outputting the AO Start Trigger Signal ........................................... 3-10
AO Pause Trigger Signal ................................................................................ 3-10
Using a Digital Source...................................................................... 3-10
Using an Analog Source ................................................................... 3-11
AO Sample Clock Signal ................................................................................ 3-11
Using an Internal Source .................................................................. 3-11
Using an External Source ................................................................. 3-11
Outputting the AO Sample Clock Signal ......................................... 3-12
Other Timing Requirements ............................................................. 3-12
AO Sample Clock Timebase Signal................................................................ 3-13
Master Timebase Signal.................................................................................. 3-14
Getting Started with AO Applications in Software ....................................................... 3-15