YOKOGAWA DL750 User Manual

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IM 701210-05E
Triggering
6
6.17 Setting the Wave Window Trigger (ENHANCED)
The time difference from the abnormal waveform to the trigger point varies depending on
the reference cycle as follows. When the frequency of the trigger is low, the time
difference from the abnormal waveform to the trigger point is 0 cycles in most cases.
Reference Cycle Time Difference
1 cycle 0 or 1 cycle
2 cycles 0, 1 or 2 cycles
4 cycles 0, 1, 2, 3, or 4 cycles
When using the wave window trigger, it is recommended that a pretrigger equal to the
reference cycle be specified. This allows abnormal waveforms to be observed even
when the above phenomenon occurs.
Selecting the Trigger Condition
ON: Use the channel as a target channel for the wave window trigger.
OFF: Do not use the channel as a target channel for the wave window trigger.
• Cycle Frequency
Set the frequency of the measured power supply in the range of 40 to 1000 Hz. The
resolution is 0.1 Hz. The default value is 50 Hz.
If the actually frequency is within ±10% of the specified value, it is automatically
tracked.
• Reference Cycle
Select how many waveforms before the current waveform are used to create the
realtime template (wave window).
1 (1 waveform), 2 (2 waveforms), or 4 (4 waveforms)
The waveforms of the specified number of reference cycles are used to create the
realtime template.
• Sync. Ch, Level, and Hys
Select the channel used to detect the waveform determination start point of the wave
window trigger. Select the synchronization channel from Auto or CH1 to CH16.
If a setting other than Auto was selected, set the level and hysteresis of the
synchronization channel.
If set to Auto, the synchronization channel is automatically set using the following
conditions.
Target channel: Channel with the smallest channel number among the target
channels of the wave window trigger.
Level: 1/2 the peak-to-peak value over 0.5 s after starting the waveform
acquisition.
Hysteresis: Same as the hysteresis of an edge trigger (see section 6.5)
If a setting other than Auto was selected, set the level and hysteresis of the
synchronization channel.
• Setting the Level
The selectable range of the level is the same as that of the simple trigger.
• Setting the Hysteresis
Sets a width to the trigger level so that triggers are not activated by small changes in
the trigger signal. Select the trigger hysteresis from
, , and .
For details, see “Setting the Trigger Hysteresis” in section 6.5.

YOKOGAWA DL750 Specifications

General

Brand	YOKOGAWA
Model	DL750
Category	Measuring Instruments
Language	English