Download SVAN 977 - Inteccon

SVAN 977 USER'S MANUAL_______________________________________________
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Setting the integration period
The Integr. Period position (integration
period) defines the period during which the
signal is being measured (integrated) and
stored as the set of Summary Results (SR).
The integration period can be set in the
special window, which is opened by pressing
the <3
3> or <4
4> push- buttons.
<4
4>
The measurement will stop automatically after this period, or the measurement will start again when the
selected Repetition Cycle is greater than one. The definitions of the measurement results in which the
integration period is used is given in App. D.
To set the integration period the user should define the required hours,
minutes and seconds fields.
The appropriate field may be selected by pressing the <3
3> or <4
4>
push- buttons.
Value of hour, minute and second is changing by means of the <5
5> or
<6
6> push- buttons.
Setting the number of repetition of measurement cycles
The Repetition Cycles position defines the number of cycles (with the
measurement period defined by Integration Period) to be performed by the
instrument. The Repetition Cycles number values are within the limits [1,
1000].
Detector’s type selection
The RMS Integration position defines the detector type for the calculations
of the Leq, LEPd, LN% and Sel functions. Two options are available: linear
(Lin) and exponential (Exp). The formulae used for the Leq calculation are
given in Appendix D.
LN%
Selecting Lin is required to obtain the true RMS value of the measured signal. When this option is selected
the value of the Leq, LEPd, LN% and Sel functions do not depend on the detector time constant: Fast,
Slow or Impulse (the results are displayed without the indicator of the detectors selected in the profiles). In
this case, the indicator Lin. (or L) is displayed in the different modes of the result presentation.
Selecting Exp enables the user to fulfil the requirements of other standards for the time averaged Leq
measurements. When this option is selected the value of the Leq, LEPd, LN% and Sel function depends on
the detector time constant (Slow, Fast, Impulse). The results are displayed with the indicator of the
detectors selected in the profiles (path: <Menu> / Measurement / Profiles).