MR8740T_user_manual_eng_20191016H.pdf - 第132页

127 Searching For Positions Where a T rigger Condition Is Satised 3 Click the [Number of searches] box, and then enter the number of search results. 4 In the [Method] area, click [T rigger] to choose a search method for…

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126
Searching For Positions Where a Trigger Condition Is Satised
6.2 Searching For Positions Where a Trigger
Condition Is Satised
Setting a trigger condition allows you to search measured data for positions where the trigger
condition is satised.
>
1
Click the [Target channel] box, and then from the channel setting dialog box, choose a
channel to be searched for positions where a trigger condition is satised.
When you choose an analog channel
3
1
4
2
5
6
When you choose a logic channel
3
1
4
2
5
6
2
Click the [Range] box, and then from the list, choose an option for a scope to be searched
for positions where a trigger condition is satised
Whole
Allows you to search whole waveform.
A_B, C_D Searches the scope specied with trace cursors A and B or trace cursors C and D.
127
Searching For Positions Where a Trigger Condition Is Satised
3
Click the [Number of searches] box, and then enter the number of search results.
4
In the [Method] area, click [Trigger] to choose a search method for searching for triggers.
5
Set search criteria.
-1. When you choose an analog channel under [Target channel]
Click the [Type] box, and then from the list, choose a trigger type to be searched for.
Level
Allows you to enter a level and search for positions where a waveform crosses the
level.
In Allows you to enter an upper and lower limit values to specify a range and search for
positions where a waveform falls within the range.
Out Allows you to enter an upper and lower limit values to specify a range and search for
positions where a waveform gets out of the range.
Set the search criterion.
Items to be set may vary depending on trigger types.
(1) When you choose [Level]
Level
Input waveform
Slope: [
] [ ]
Setting Description
Filter Off
,
10 to 10,000
Allows you to enter a lter width in the number of samples. Positions
where a search criterion is continuously satised during the specied
period are determined to be the retrieved positions.
Slope
, Allows you to choose which of the following points to search for, points
at which a signal crosses the specied level in the positive direction or
those in the negative direction.
Level −
3
.
4028
E+
38
to
3
.
4028
E+
38
Default: 0
Allows you to enter a threshold (level) to be searched for.
6
Search Function
128
Searching For Positions Where a Trigger Condition Is Satised
(2) With the [In] or [Out] setting
[In]
Upper limit value
Lower limit value
[Out]
Upper limit value
Lower limit value
Setting Description
Filter Off
,
10 to 10,000
Allows you to enter a lter width in the number of samples. Positions
where a search criterion is continuously satised during the specied
period are determined to be the retrieved positions.
Upper limit
value
−
3
.
4028
E+
38
to
3
.
4028
E+
38
Default: 0.2
Allows you to enter an upper limit value.
Lower limit
value
−
3
.
4028
E+
38
to
3
.
4028
E+
38
Default: 0.2
Allows you to enter a lower limit value.
-2. When a logic channel is selected under [Target channel]
You can search for a position that matches the specied pattern.
Trigger pattern
LA1 1
LA2 0
LA3 X
LA4 X
Setting Description
Satised OR
The positions where any one of the specied search patterns is
satised are determined to be the retrieved positions.
AND The positions where all the specied patterns are satised are
determined to be the retrieved positions.
Filter Off
,
10 to 10,000
Allows you to enter a lter width in the number of samples.
Positions where a search condition is continuously satised
during the specied period are determined to be the retrieved
positions.
Trigger pattern X
Ignored data.
0 Searches for low-level positions.
1 Searches for high-level positions.
In the logic search, the retrieved position is the point where the condition that has not been satised changes
to being satised. Thus, even if signals match a search pattern at the start of a search, it is not regarded as a
retrieved position.