PROCEDUREv2.10
LOAD TEST IMPLSLOG/R
EDIT COMMENT /E
UTIL PROMPT /R
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      The first screen will display the first 50 milliseconds of impulse/R
      response from the signal you will acquire.  If the signal/R
      is not properly scaled vertically:/R 
         a. interrupt the procedure with the <ALT><F1> key/R
         b. LOAD TEST IMPLSLOG/R
         c. change the DATA-1 GRAPH TOP and BOTTOM to fit the/R
            microphone sensitivity and signal levels in use/R
         d. re-save IMPLSLOG.TST, overwriting the existing file/R
         e. run the procedure again/R
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      When you have a proper impulse response display, use the graphics/R
      cursor to determine:/R
         1. the time where the impulse starts to build up/R
         2. the time just before the first reflection arrives/R
      Note these times and press <Enter> to move to the next screen./R
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      Press <Enter> now to acquire signal and view the impulse./E
/F9/F10/E
UTIL PROMPT /R
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      On the SWEEP DEFINITIONS panel on the following screen, enter/R
      the time you have just determined as the start of impulse/R
      build-up (1) into the SOURCE-1 START field and press <Enter>./R
      Enter the time just before the first reflection (2) into the SOURCE-1/R
      STOP field and press <Enter>.  Remember to use the "m" abbreviation/R
      for milliseconds.  These times for the first-arrival signal will be/R
      used by the DSP unit as the definition of the anechoic signal,/R
      and the expanded first-arrival signal will be plotted./R
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      Press <Enter> now to move to the SWEEP DEFINITIONS panel.  Press/R
      <Enter> again after viewing the expanded first-arrival signal./E
PANEL ss/F10/R
/F10/R
/F6/F10/E
UTIL PROMPT /R
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      When the expanded first-arrival signal is re-drawn on the next/R
      screen, use the graphics cursor to locate the exact peak of the impulse/R
      and note the time.  Then, press <Enter> to move to the MLS DSP panel/R
      and enter that time value into the REF TIME field which compensates/R
      for acoustical delay from generator to microphone.  Remember to use/R
      "m" for milliseconds./R
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      Press <Enter> now to view the first-arrival signal again./E     
/F6/F10/E
LOAD TEST resphase/R
PANEL ds/F10/R
/E
UTIL PROMPT /R
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      The following screen displays the anechoic frequency and phase/R
      response of the loudspeaker./R
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      Press <Enter> to view, and press <Enter> again after viewing./E

/F6/F10/E
UTIL END