Using An Analog Source; Routing Ao Pause Trigger Signal To An Output Terminal; Ao Sample Clock Signal; Using An Internal Source - National Instruments NI 6221 User Manual

Chapter 5 Analog Output

AO Sample Clock Signal

M Series User Manual

Using an Analog Source

When you use an analog trigger source, the samples are paused when the
Analog Comparison Event signal is at a high level. Refer to the
with an Analog Source
information.
Routing AO Pause Trigger Signal to an Output
Terminal
You can route ao/PauseTrigger out to RTSI <0..7>.
Use the AO Sample Clock (ao/SampleClock) signal to initiate AO samples.
Each sample updates the outputs of all of the DACs. You can specify an
internal or external source for ao/SampleClock. You also can specify
whether the DAC update begins on the rising edge or falling edge of
ao/SampleClock.

Using an Internal Source

One of the following internal signals can drive ao/SampleClock.
• AO Sample Clock Timebase (divided down)
• Counter n Internal Output
A programmable internal counter divides down the AO Sample Clock
Timebase signal.

Using an External Source

Use one of the following external signals as the source of ao/SampleClock:
• PFI <0..15>
• RTSI <0..7>
• PXI_STAR
• Analog Comparison Event (an analog trigger)
Routing AO Sample Clock Signal to an Output
Terminal
You can route ao/SampleClock (as an active low signal) out to any
PFI <0..15> or RTSI <0..7> terminal.
section of Chapter 11, Triggering, for more
5-10
Triggering
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