6-42
IM 701210-05E
6.17 Setting the Wave Window Trigger (ENHANCED)
Operating Conditions of the Wave Window Trigger
Target waveform: AC waveform or triangular waveform between 40 and 1 kHz.
(Rectangular waveforms such as inverter waveforms and
waveforms with a fast rising edge are excluded)
Sample rate: 10 kS/s to 500 kS/s
Acquisition mode: Normal
Trigger mode: Normal, Single, or Single(N)
Applicable Modules
• 701250 (HS10M12)
• 701251 (HS1M16)
• 701255 (NONISO_10M12)
• 701260 (HV(with RMS))
• 701261 (UNIVERSAL) (only when measuring voltage)
• 701262 (UNIVERSAL (AAF)) (only when measuring voltage)
• 701270 (STRAIN_NDIS)
• 701271 (STRAIN_DSUB)
• 701275 (ACCL/VOLT)
A trigger occurs if any of the specified trigger conditions (OR condition) is met.
Notes When Using the Wave Window Trigger
The wave window trigger cannot be used in the following cases:
• When the dual capture function is ON.
• When the acquisition mode is set to Average or Envelope
• When the record length is less than or equal to 25 kW and T/div is less than 10 mS/div.
Wave window triggers are not easily triggered when the trigger mode is set to Auto or
Auto Level.
Normally, set the trigger mode to Normal, Single, or Single(N).
The wave window trigger is used to detect rapid changes in the waveform. If a
difference is observed after comparing 1 to 4 cycles (reference cycles) of the previous
waveform and the current waveform, a trigger is activated. Therefore, if an abnormal
waveform such as serge is contained in the 1 to 4 cycles of the previous waveform, a
trigger is activated on the normal waveform. In such case, the trigger point may appear
as though it is delayed by several cycles as shown in the figure below. This
phenomenon is unavoidable due to the principles of the wave window trigger.
Trigger appears as though it is delayed by 1 cycle.
Serge
Trigger occurrence
Pretrigger
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