Using Scream!
In the example above, we might want the high-rate data from Tap 0 to be generated
only when an event registers. To do this, the
lower
check-boxes of Tap 0 should be
ticked:
With this configuration uploaded, Tap 2 will continue to produce output at all times,
but Tap 0 will also emit data whenever the trigger criteria are met. The
Triggering
button is now shown in red to remind you that the trigger is active.
When a trigger occurs, every checked box in this window will cause the digitiser to
output a data stream. This stream will appear in Scream!'s main window when
Scream! first receives some data from it.
Every stream is identified by a 6-character code, where the first four characters
identify the digitiser, and the last two characters identify the individual stream. The
first four characters are set by default to the serial number of the digitiser; you can
change this on the
System ID
pane (see above) or from the digitiser's console.
Using the example above, there are three data streams, Z, N and E, which each output
data at 40 samples/s (continuously) and 1000 samples/s (occasionally).
39
Issue U - December, 2021
