Ao Sample Clock Source Connections - Advantech MIC-1810 User Manual

3.9.1

AO Sample Clock Source Connections

Internal AO Output Clock
The internal AO output clock applies a 100MHz time base divided by a 32-bit counter.
Conversions start on the rising edges of counter output. Through software, the user
can specify the clock source and clock frequency to pace the analog output opera-
tion. The maximum frequency is 3.030303MS/s.
External AO Output Clock
The external AO output clock is useful when you want to pace analog output opera-
tions at rates not available with the internal AO output clock, or when you want to
pace at uneven intervals. Connect an external AO output clock to the pin and then
the conversions will start on input signal's rising edge. You can use software to spec-
ify the clock source as external. The maximum input clock frequency is 3MS/s.
Figure 3.13 External Clock Source Connection
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