User Manual – Rev BE AMETEK Programmable Power
MX Series 178
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:
Series I:
• MX30/MX45 - single-phase mode: 104 msec to 1040
msec.
• All models in three-phase mode: 312 msec to 3120
msec.
Series II:
• MX30/MX45 - single-phase mode: 42.6 msec to 426 msec.
• All models in three-phase mode: 128 msec to 1280
msec.
This situation is shown in Figure 4-42. The example shows a similar scenario as
before, only this time the trigger delay was set at -20 ms. Notice that the data
acquisition window now contains data that occurred before the user pressed the
ENTER key to start the acquisition.
Figure 4-42: Negative Trigger Delay (Pre-Trigger Data)