Using Scream!
For example, setting the
STA
to 1 second, the
LTA
to 10 seconds and the
Ratio
to 4
would give rise to the following trigger behaviour:
Usually, the values of the
STA
and
LTA
periods, and of the
Ratio
, will be the same for
all checked channels. For convenience, Scream! will automatically fill in other
values to match ones you enter. If you want to use different values for some
channels, you should clear the Common values check-box before altering them.
Once you have enabled the
STA/LTA
triggering method on a particular channel, you
can use the
Control
window to change the values of the
STA
and
LTA
periods,
together with the
Ratio
, without restarting the digitiser (see Section 5.2 on page 50).
43
Issue U - December, 2021
