Hioki Memory HiCorder MR6000, Instruction Manual, Page: 140 / 392

134
Triggering the Instrument Using Analog Signals (Analog Trigger)
3. [ Voltage drop] trigger
When a voltage peak is continuously lower than a specified level for a time of half a period or more,
the voltage-drop-trigger condition is satisfied. The sampling rate can be set at a figure in the range
of 2 kS/s to 100 MS/s.
The external sampling is cannot be set when the envelope is used. These triggers cannot be set
either when Model MR8990 or Model 8970 is used.
Level
Half the period
Setting Description
Level 0 to +f.s. ( 100 V  ) Allows you to enter a level to be used to check for voltage
drops.
Frequency 50 Hz  , 60 Hz Allows you to choose the frequency of the power to be
measured.
RMS (root-
mean-square
value)
Varies in conjunction with
the level settings
Displays a rough indication of the RMS value.
Event With OR 1  to 4,000 Allows you to enter the number of events.
The instrument counts the number of times the voltage-
drop-trigger condition is satisfied. Only after the count
reaches the specified number of events, an analog trigger
is generated.
With AND Not available
Behavior of the voltage drop trigger varies depending on the trigger satisfaction conditions (AND
and OR operations).
With OR As soon as the instrument determines that a voltage peak became lower than a specified
level for a time of half a period or more, the voltage-drop-trigger condition is satisfied.
With AND While a voltage peak is lower than a specified level for a time of half a period or more,
the voltage-drop-trigger condition is continuously satisfied.
HIOKI MR6000A966-03