Routing Ao Pause Trigger Signal To An Output Terminal; Ao Sample Clock Signal; Using An Internal Source; Using An External Source - National Instruments NI 6238 User Manual

Chapter 5 Analog Output

AO Sample Clock Signal

Note Refer to the NI 6238/6239 Specifications for the minimum allowable pulse width
and the propagation delay of PFI <0..5>.
NI 6238/6239 User Manual
You also can specify whether the samples are paused when ao/PauseTrigger
is at a logic high or low level.
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:
• Input PFI <0..5>
• RTSI <0..7>
• PXI_STAR
Routing AO Sample Clock Signal to an Output
Terminal
You can route ao/SampleClock (as an active low signal) out to any output
PFI <6..9> or RTSI <0..7> terminal.
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