The 1/1 Octave Setup (1/3 Octave Setup)
position appears in the Input list when the
1/1 Octave (1/3 Octave) function is selected in
the Measurement Function list and enales the
user to select the parameters for 1/1 and 1/3
octave spectrum calculation for each channel:
weigting filter and frequency band.
The activation of spectrum calculation is made
by switching on the Enabled position.
In case of Vibration input the Filter and Band
parameters cannot be changed and the default
values are HP and Full accordingly.
In case of Sound input the Filter position can
be set as: HP, LIN, A and C. In case of
Vibration input only HP filter is available.
The frequency characteristics of the filters
mentioned above are given in Appendix C.
The Band position enables the user to select
the band in which 1/1 Octave or 1/3 Octave
analysis of the signal has to be performed.
Available values of the bands of the analysis
are as follows: Audio, Full in case of sound
measurements, Full in case of vibration
measurements.
The results of 1/1 Octave or 1/3 Octave
analysis (spectrum) can be saved in the
logger’s file of the instrument.
The Logger position enables the user to save
the spectrum if RMS value is selected in case
of Vibration input, and RMS or LEQ (with A
filter) value is selected in case of Sound input.
10.3 SELECTION OF 1/1 OCTAVE AND 1/3 OCTAVE BANDPASS RESULTS AS TRIGGERING SOURCE
For the 1/1 Octave or 1/3 Octave functions it is
possible to define trigger condition for logger,
event, wave and alarm triggers, based on the
selected spectrum band levels.
The trigger conditions for the above
applications can be programmed in the
Trigger Events Setup list, which enables the
user to define “events” for: Logger Trigger,
Alarm Trigger, Alarm SMS Notific. and
Alarm E-mail Notif., using the result of 1/1 or
1/3 analysys for any channel and profile as well
as Vector.
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