Siemens SIMEAS Q80 Operating Instruction page 134

E-58 SIMEAS Q80 7KG8080
11.1.3.4 Triggers
Triggers serve in SIMEAS Q80 7KG8080 exclusively for recording the instantaneous value. Changes of the RMS-
value as indications of events (such as voltage dips and power outages) are optimally captured in curve plots.
The length of a trigger sequence can theoretically be between at least 10 periods and at most until the storage
medium is full. This includes any additional pretrigger, which has at least 0,1 s up to 30 s. In the world of
measurement curves, triggers serve as a sort of magnifying glass for viewing data. This will is clearly seen when
comparing curve plots with trigger sequences.
Note
Every signal recorded within such a trigger sequence at 100 µs resolution requires at least 14 kB
of memory per channel. Frequent release of the trigger therefore limits the maximum duration of a
long-term measurement. In order to ensure the duration of measurement, it is possible to set
triggered recording to stop when available free memory falls below a certain amount; or it is
possible to specify a maximum amount of memory for the trigger
Power Quality Recorder SIMEAS Q80 7KG8080, Operating instruction
E50417-B1074-C419-A2, Release 09.02.2011
Fig 1-1 Curve plot and trigger