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2-12
Functional Description
●
External pacer clock
—
When the trigger event occurs, the board
begins monitoring the state of the external pacer clock signal. At the
next active edge of the external pacer clock, the channels are updated.
Figure 2-4 illustrates how the channels are updated when using a
rising-edge hardware trigger.
Figure 2-4. Using a Hardware Trigger
Note:
The time at which the analog output channels are updated also
depends on the pacer clock. Refer to page 2-6 for more information.
Hardware Trigger
(Rising Edge)
Trigger event occurs
Updates begin when
using an external
pacer clock
Updates begin when
using an internal
pacer clock
External Pacer Clock
(Falling Edge)
Internal Clock
Source
(idle state)
count
count
count
count
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