Svantek SVAN 948 - Selection of the Measurement Range in 1;1 OCTAVE Analysis of Acoustic Signal - RANGE

SVAN 948 USER MANUAL
4 - 43
The spectra registered in the buffer’s file can be presented on the display in the BUFFER VIEW
sub-list of the DISPLAY list (path: MENU / DISPLAY / BUFFER VIEW). These spectra are saved with the
same step as selected in the SLM profiles (see the description of the BUF. STEP position of the
MEASURE SETUP sub-list).
In order to display the registered in the buffer’s file spectra the user has to:
- press the <SHIFT> and <

> push-buttons for the spectra stored later;
- press the <SHIFT> and <

> push-buttons for the spectra saved earlier.
In the BUFFER VIEW sub-list it is also possible to examine the time history for 1/1 OCTAVE filter
selected by the cursor (cf. the description of the BUFFER VIEW sub-list in Chapter 5).
Notice: Many time histories can be saved in the buffer’s file of the instrument during the
measurements performed in different sessions. The presentation of these results is possible using the
BUFFER VIEW window of the DISPLAY list (path: MENU/ DISPLAY/ BUFFER VIEW) (cf. Chapter 5).
1/1 OCTAVE analysis can be performed taking into account the USER FILTERS coefficients set in
the SETUP list (path: MENU/ SETUP/ USER FILTERS/ SOUND FILTERS (VIBR. FILTERS)/ VIEW (EDIT,
CLEAR) (see Chapter 5 for detailed description of the USER FILTERS setting).
The view of the displays in the coefficient values setting of 1/3 or 1/1 OCTAVE filters in the USER FILTERS
sub-list of the SETUP list
When these filters are switched on 1/1 OCTAVE analysis is performed in the normal way but
simultaneously the USER FILTERS coefficients are taken into account for the calculation of the TOTAL
result. The TOTAL results for the first, the second or for both USER FILTERS are presented instead of
the TOTAL for A, C and LIN weighting filters.
The view of the displays in 1/1 OCTAVE analysis with the switched on USER FILTERS for CHANNEL 2
Selection of the measurement range in 1/1 OCTAVE analysis of acoustic signal - RANGE
The selection of the input range is possible after entering the RANGE position (path: MENU / INPUT
/ CHANNEL x / RANGE) (from the INPUT / CHANNEL x sub-list by means of the <

>, <

> (or <

>,
<

>) push-buttons and pressing the <ENTER> one. The input ranges specified in Appendix C. The return
to the CHANNEL x sub-list is made after pressing the <ESC> push-button (ignoring the changes) or
<ENTER> push-button (confirming the selection).