AMETEK i Series - Manual (Page 107)

User Manual
i Series / iX Series 93
PRE TRIGGER DELAY
Alternatively, a negative trigger delay value may be specified up to the maximum time window
depth of the acquisition window. (104 ms for single phase configurations, 312 ms for three phase
configurations). This situation is shown in Figure 4-38. 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 4-38: Negative trigger delay (Pre-trigger data)
For single phase iX configurations, negative trigger delay values may be set from 0.0 ms to -
104.0 ms (1 second) in 0.1 ms increments. For three phase iX configurations, the maximum
negative trigger delay value equals -312.0 ms. The value may be entered directly from the
keyboard or using the knob.