A sample consists of one reading from each channel in the AI task. Sample Clock signals the start of a sample of all analog input channels in the task.

Sample Clock can be generated from external or internal sources as shown in the following figure.

Figure 29. AI Sample Clock Timing Options

Routing the Sample Clock to an Output Terminal

You can route Sample Clock to any output PFI terminal on an installed C Series module. Sample Clock is an active high pulse by default.