User`s guide

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Using the Pattern Generator
Building Test Vectors and Functions
The Format Menu
The Format menu lets you configure the pattern generator with a clock
source and parameters, generate a symbol table, select its output
mode, assign which vector output channels are used, and then group
and label the vector output channels.
Format Menu
Clock Source
The Clock Source field toggles between internal and external. The
internal clock source is supplied by the pattern generator and controls
the frequency the vectors are output to the system under test.
The external clock is provided by you, or the system under test, and is
input to the pattern generator through the CLK IN probe of a clock
pod. By using an external clock, you synchronize the vector output of
the pattern generator to the system under test.
Regardless of which clock is selected, vectors are output on the rising
edge of the clock.