Technical data

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Coordinating the Sequencers
4 Coordinating the Sequencers
The independence of the list sequencers provides great flexibility, but it also requires careful
coordination of the two, when both are used at once. It is important to manage the order of events, so that
one list sequencer does not proceed before the other is ready.
It is not possible for both sequencers to be initiated absolutely simultaneously. When both are used, the
source list sequencer should always be initiated first. There are two ways to coordinate the sequencers so
that they are initiated in the proper order:
• Enable
Meas Setup, Include Source in Sequence. When this selection is made, both of the list
sequencers are initiated automatically, in the correct order, when you use a command or key to
initiate the analyzer sequence (in this case, the source sequence cannot be initiated independently of
the analyzer sequence).
• If “Include Source in Sequence” is disabled, then the source and analyzer must be initiated
independently, and the source must be initiated first. This sometimes requires the addition of a
“dummy step” in a sequence, to ensure that the source does not begin playing before the analyzer is
ready to capture data.
This chapter explains how to initiate and trigger the sequencers (when both sequencers are used at the
same time), for alternative test cases.
The chapter topics are:
• Include Source in Sequence is enabled
• Include Source in Sequence is disabled