Fluke 8588A Operator's Manual page 122

8588A/8558A
Operators Manual
Example 2
Measurement: Take measurements at a specific, accurate period. The Product
should make 10 measurements with a 100 ms aperture at 1 second intervals.
Solution: In DCV Measure Setup, set the reading aperture to 100 ms (
(Measure Setup) > Manual >  (Edit Time) > 0.1 s). In Trigger Setup, push
 (Reset to Defaults) and then  to stop readings. Set Trigger
event to Timer and the Timer interval (2
1 second. Set the Triggers/Arm (Count) to 10. Push to start the capture,
where a reading is taken every second. After 10 readings it stops. Pushing
 again discards the previously captured readings, as seen with Statistics
enabled.
This works by using the Timer as the event source, causing measurements at the
set interval. The time taken to make a measurement must be less than the set
interval. Minimum trigger interval varies with function and aperture setting. See
Specifications.
Example 2b
Measurement: Repeat Example 2 process every minute for 5 minutes.
Solution: From the setup in Example 2, set the Arm1 event to Timer, set the
Arm1 Timer to 60 seconds and the Arm1 Count to 5. Each push of  results
in five bursts of 10 captures over the course of 5 minutes and 10 seconds, for a
total of 50 measurements. Note that examples 2 and 2b put the system's Initiate
layer in Continuous Off, so that each push of  discards the previously
captured readings.
This works by nesting the trigger layer activity inside the Arm1 count. Since the
requirement is to have each burst of trigger activity a specific interval apart, a
timer in the Arm1 layer controls this interval.
Example 3
Measurement: Use an external trigger signal (applied to the rear panel TRIG IN
BNC connector) to make a burst of 1000 measurements of aperture 500 μs at
intervals of 1 ms.
Solution: Push  (Reset to Defaults) in the Trigger Setup menu, and then
set the Trigger Event to Timer with a Timer period of 1 ms. Set the Triggers/Arm
(Count) to 1000. Set the Arm1 event to External. Set aperture to 500 μs. Each
occurrence of the external trigger signal (at the TRIG IN BNC on the rear panel)
will make a burst of 1000 measurements, accumulating each burst.
This works by causing the Trigger subsystem to wait in the Arm1 layer until the
external trigger event occurs. Once it does, the Trigger Count and Timer control
the measurements. Since the system is in the Continuous ON mode, completion
of the capture immediately returns to the waiting state in Arm1.
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nd row of the Trigger Setup menu) to