Svantek SV 258PRO, Руководство пользователя

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SV 258 PRO (AG) User Manual
79
Select in the Source list the result which will be
compared with the threshold level: PPV , RMS , LEQ ,
rolling RRMS and RLEQ or Curve .
Selected result defines the threshold type
– next
parameter in this box.
For LEQ the Threshold in dB should be defined in the
range 20dB
÷ 130dB,
For PPV and RMS three threshold levels should be
defined for X, Y and Z axis in the range 1 µm/s ÷ 100
mm/s.
For rolling RLEQ and RRMS also the Rolling time
should be defined.
In the Event Counter position, you can select a
number of event conditions that should appear before
triggering the event and alarms.
Additionally, in the Event counter mode position you
can define the mode of counting events ( Periodical or
Consecutive ).
In the Periodical mode, an event will occur if a trigger
condition appears within a certain period of time ( Event
counter period: Human Vib. Step or Velocity Step ) for
a certain number of times ( Event Counter ).
In the Consecutive mode, an event will occur if a trigger
condition appears the specified number of times ( Event
Counter ) consecutively in succession.
For Curve the Reduction factor should be defined in
the range 0.1 ÷ 1.9.
The Event counter is not used for the Curve source.
The exception is the case when the
User standard is
selected with 1/3-octave spectrum
– see below.