National Instruments DAQ X Series, Руководство пользователя

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Chapter 5 Analog Output
X Series User Manual 5-12 ni.com
Fig u re 5-7 shows the relationship of AO Sample Clock to AO Start Trigger.
Figure 5-7. AO Sample Clock and AO Start Trigger
AO Sample Clock Timebase Signal
The AO Sample Clock Timebase (ao/SampleClockTimebase) signal is
divided down to provide a so
u rce for AO Sample Clock.
Yo u can ro u te any of the following signals to be the AO Sample Clock
Timebase signal:
• 100 MHz Timebase (defa u lt)
• 20 MHz Timebase
• 100 kHz Timebase
• PXI_CLK10
• PFI <0..15>
• RTSI <0..7>
• PXI_STAR
• PXIe-DSTAR<A,B>
• Analog Comparison Event (an analog trigger)
AO Sample Clock Timebase is not available as an o u tp u t on the I/O
connector.
Yo u might u se AO Sample Clock Timebase if yo u want to u se an external
sample clock signal, b u t need to divide the signal down. If yo u want to u se
an external sample clock signal, b u t do not need to divide the signal, then
yo u sho u ld u se AO Sample Clock rather than AO Sample Clock Timebase.
AO Sa mple Clock Time bas e
AO S t a rt Trigger
AO Sa mple Clock
Del a y
From
S t a rt
Trigger
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