JVL MAC050 User Manual page 139

4.3
4.3.5 Trigger position setting
Trigger position in buffer can be selected from 0% to 100%
0% means that the data recorded starts exactly at the trigger condition.
If you want to record data prior to the trigger point, then you need to select a higher
percentage.
100% means that all data is prior to the trigger point.
NB! If the trigger condition occurs before the buffer is full, the available data will be pre-
sented.
4.3.6 Trig on change
When selected, then the trigger point will occur when the value passes the threshold
from the right value.
Ex. Trigger point is Actual velocity > 600rpm
Motor is running at 700rpm when scope is started.
Now the trigger is not armed before the Actual velocity has been under 600rpm.
Subsequently the trigger will be activated when the Actual velocity again rises beyond
600rpm.
If unchecked, the trigger is based on a static value evaluation.
JVL A/S - User Manual - Integrated Servo Motors MAC050 - 4500
MacTalk Scope usage
135