Analog output timing signals, Figure 7-3. analog output timing options, Ao start trigger signal – National Instruments NI USB-621x User Manual
Page 72: Using a digital source, Analog output timing signals -5, Ao start trigger signal -5, Using a digital source -5
Chapter 7
Analog Output
© National Instruments Corporation
7-5
Analog Output Timing Signals
Figure 7-3 summarizes all of the timing options provided by the analog
output timing engine.
Figure 7-3. Analog Output Timing Options
USB M Series devices feature the following AO (waveform generation)
timing signals.
•
AO Start Trigger Signal
•
AO Pause Trigger Signal
•
AO Sample Clock Signal
•
AO Sample Clock Timebase Signal
AO Start Trigger Signal
Use the AO Start Trigger (ao/StartTrigger) signal to initiate a waveform
generation. If you do not use triggers, you can begin a generation with a
software command.
Using a Digital Source
To use ao/StartTrigger, specify a source and an edge. The source can be one
of the following signals:
•
A software pulse
•
PFI <0..3>, PFI <8..11>
•
ai/StartTrigger
20 MHz Timebase
100 kHz Timebase
Programmable
Clock
Divider
ao/SampleClock
Timebase
Ctr
n Internal Output
ao/SampleClock
PFI
PFI
SampleClock
Timebase Divisor