Hioki 8847, Instruction Manual

Page: 174 / 372

9.5 Trigger by Timer or Time Intervals (Timer Trigger)
164
When a trigger is applied from a trigger source other than a timer trigger
Trigger sources set to On are all enabled.
However, trigger timing depends on the trigger source settings.
• When trigger criteria are ORed together (Trigger Source: OR)
Depending on the other trigger sources, triggering can occur before the speci-
fied trigger Start time, after the specified Stop time, or outside of the specified
Interval.
• When trigger criteria are ANDed together (Trigger Source: AND)
Triggering occurs between the specified Start and Stop times when criteria for
all trigger sources set within the specified interval are satisfied.
If the interval is set to zero, triggering occurs when criteria for all trigger
sources set between specified Start and Stop times are satisfied.
Example: measuring when both timer trigger and level triggers (Slope:
↑
) are
enabled.
When trigger criteria are ORed together (Trigger Source: OR)
Start Measurement
Start Time Stop Time
Level Trigger
Timer Trigger
Recording
T T T T T T T T T T
Interval
Ignored because they occur while recording
When trigger criteria are ANDed together (Trigger Source: AND)
Start Measurement
Start Time
Stop Time
Recording
T
Interval
T T
Outside of Timer Time
Timer Trigger is not
applied, so ignored Trigger was applied only once
within the interval, so ignored
Outside of
Timer Time
Measurement ends
at Stop time
Level Trigger
Timer Trigger
Ignored because they occur while recording