User`s guide

Working with Scope Objects
Note The difference b etwe en setting TriggerSample = (N + P - 1),
where
N and P are the parameters of the triggering scope (Scope 1) and
TriggerSample = -1 is that in the former case, the first sample of Scope 2
willbeatthesametimeasthelastsampleofScope1,whereasinthelatter,
thefirstsampleofScope2willbeonesampleafterthelastsampleofScope1.
This means that in the former case both scopes acquire simultaneously for
one s ample, and in the latter they will never simultaneously acquire.
Acquiring Gap-Free Data Using Two Scopes
With two scopes, you can acquire gap-free data. Gap-free data is data that two
scopes acquire consecutively, with no overlap. The first scope acquires data
up to N, then stops. The second scope begins to acquire data at N+1. This is
functionality that you cannot achieve through pre- or posttriggering.
Acquisiti on of Gap- F ree D ata o n pag e 2-20 graphically illustrate s how s copes
trigger one another. In this example, the
TriggerMode property of Scope 1 is
set to
'Software'. This allows Scope 1 to be software triggered to acquire
data when it re ceives the command
sc1.trigger.
2-19