National Instruments NI 6225 - Other Timing Requirements; AO Sample Clock Timebase Signal

Chapter 5 Analog Output
© National Instruments Corporation 5-11 M Series User Manual
Other Timing Requirements
A counter on your device internally generates ao/SampleClock unless you
select some external source. ao/StartTrigger starts the counter and either the
software or hardware can stop it once a finite generation completes. When
using an internally generated ao/SampleClock, you also can specify a
configurable delay from ao/StartTrigger to the first ao/SampleClock pulse.
By default, this delay is two ticks of ao/SampleClockTimebase.
Figure 5-6 shows the relationship of ao/SampleClock to ao/StartTrigger.
Figure 5-6. ao/SampleClock and ao/StartTrigger
AO Sample Clock Timebase Signal
The AO Sample Clock Timebase (ao/SampleClockTimebase) signal is
divided down to provide a source for ao/SampleClock.
You can route any of the following signals to be the AO Sample Clock
Timebase (ao/SampleClockTimebase) signal:
•20MHzTimebase
• 100 kHz Timebase
•PXI_CLK10
• PFI <0..15>
•RTSI<0..7>
•PXI_STAR
• Analog Comparison Event (an analog trigger)
ao/SampleClockTimebase is not available as an output on the I/O
connector.
ao/SampleClockTimebase
ao/StartTrigger
ao/SampleClock
Delay
From
Start
Trigger