Yokogawa DAQWORX - Manual (Page 17)

1-11 IM WX13-01E
Before Using the
AddT
rigger Software
1.1 Overview of Functions
1
2
3
4
5
Index
6
When the Stop Condition is Data Count
When the stop condition is set to Data Count, data are saved from the number of data specified
for the pretrigger that are prior to the start trigger point (start point of data saving). Then, the
specified number of data are saved, and logging stops. In this case, the relationships between
the data held before the start trigger and the pretrigger width are shown in the figure below.
Data held before the start trigger > pretrigger width (most common case)
• Pretrigger width < Specified width for data saving [2]
Data held before the start trigger
Pretrigger width
Start point of data saving
Start trigger point
Time
Data saving period (Specified width for data saving)
• Pretrigger width > Specified width for data saving
Data held before the start trigger
Pretrigger width
Start point of
data saving
Start trigger point
Time
Data saving period
(specified width for data saving)
Data held before the start trigger < pretrigger width
Attempts to save the specified number of data starting from the point that is one pretrigger
width behind the start trigger point. However, since that point does not satisfy the condition,
data held before the start trigger < pretrigger width, no data is saved. In this case, the data
at the start point of data saving lies beyond the starting point based on the pretrigger width.
Because of this, the number of data saved is less than the specified number of data.
There are three periods for data saving:
• When the data saving period exists (including the start trigger point)
• When the data saving period exists (not including the start trigger point)
• When the data saving period does not exist
Each case is shown in the figure.
• When the data saving period exists (including the start trigger point)
Pretrigger width < (specified width for data saving + data held before
the start trigger) (most common case)
Data held before the start trigger
Pretrigger width
Start point
of data saving
Start trigger point
Time
Data saving period
Specified width for data saving