Chapter 5 Analog Output
M Series User Manual 5-10 ni.com
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 Triggering
with an Analog Source section of Chapter 11, Triggering, for more
information.
Routing AO Pause Trigger Signal to an Output
Terminal
You can route ao/PauseTrigger out to RTSI <0..7>.
AO Sample Clock Signal
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.