User Manual California Instruments
98 CSW Series
PRE TRIGGER DELAY
Alternatively, a negative trigger delay value may be specified up to the maximum time window
depth of the acquisition window. The value may be entered directly from the keyboard or using
the knob. The following time interval range is available:
Single-phase mode: 42.6 msec to 426 msec.
Three-phase mode: 128 msec to 1280 msec.
This situation is shown in Figure 3-44. The example shows a similar scenario as before, only
this time the trigger delay was set a -20 ms. Notice that the data acquisition window now
contains data that occurred before the user pressed the ENTER key to start the acquisition.
START
[ENTER]
TRIG SOURCE=
PHASE 0°
ACQUISITION WINDOW
TRIGGER
DELAY
Figure 3-44: Negative trigger delay (Pre-trigger data)
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