METREL MI 2893 - Page 206

MI 2893 / MI 2892 / MI 2885 Measurement methods
206
Voltage
t
U
Rms(1/2)
Trigger
Point
(cause: dip)
Pretrigger
(1 sec)
Duration (2 sec)
Dip Treshold
(90 % UNom)
Int. Treshold
(5 % UNom)
Pretrigger
(1 sec)
Duration (2 sec)
Waveform record No.1 Waveform record No.2
µSD
Card
REC001.WAV
REC001.INR
REC002.WAV
REC002.INR
}
}
Trigger Point
(cause: interrupt)
Figure 169: Voltage Event Triggering
 Voltage level – instrument starts waveform recorder when measured RMS voltage reaches given
voltage threshold.
Voltage
t
U
Rms(1/2)
Trigger Point
Pretrigger
(1 sec)
Duration (2 sec)
Trigger:
Voltage level
Waveform record
µSD
Card
REC001.WAV
REC001.INR
}
Figure 170: Voltage Level Triggering
 Current level - instrument starts waveform recorder when measured current reaches given
current threshold. Typically, this type of triggering is used for capturing inrush currents.