12.1 AVERAGING RT60 RESULTS..................................................................................................................... 75
13 MAINTENANCE ................................................................................................................................... 76
13.1 BATTERIES REPLACEMENT ....................................................................................................................... 76
13.2 DISCONNECTING MICROPHONE ................................................................................................................ 76
13.3 RESETTING THE INSTRUMENT ................................................................................................................... 76
13.4 FIRMWARE UPGRADE ............................................................................................................................ 77
13.5 PRESERVATION OF INTERNAL BATTERIES ..................................................................................................... 77
13.6 TRANSPORTATION AND STORAGE .............................................................................................................. 77
13.7 CLEANING .......................................................................................................................................... 77
13.8 TROUBLESHOOTING .............................................................................................................................. 78
14 GLOSSARY ........................................................................................................................................... 79
14.1 MODES AND MEASUREMENT FUNCTIONS ................................................................................................... 79
14.2 CALIBRATION ...................................................................................................................................... 80
14.3 DEFINITIONS OF MEASURED RESULTS ......................................................................................................... 81
14.4 MEASUREMENT PARAMETERS .................................................................................................................. 85
14.5 DISPLAY PARAMETERS............................................................................................................................ 97
14.6 INSTRUMENT PARAMETERS ................................................................................................................... 100
14.7 AUXILIARY PARAMETERS ....................................................................................................................... 102
APPENDIX A. REMOTE CONTROL .................................................................................................................. 104
A.1 INPUT/OUTPUT TRANSMISSION TYPES ..................................................................................................... 104
A.2 FUNCTION #1 – INPUT/OUTPUT OF THE CONTROL SETTING CODES .................................................................. 104
A.3 FUNCTION #2 – MEASUREMENT RESULTS READ-OUT IN THE SLM MODE .......................................................... 106
A.4 FUNCTION #3 – READ-OUT OF MEASUREMENT RESULTS IN 1/1 OCTAVE AND 1/3 OCTAVE MODE .......................... 109
A.5 FUNCTION #4 – READ-OUT OF THE DATA FILE FROM THE INTERNAL FLASH-DISK OR RAM MEMORY......................... 109
A.6 FUNCTION #D – READ / WRITE THE DATA FILES FROM THE EXTERNAL MEMORY (SD-CARD) .................................. 110
A.7 FUNCTION #5 – STATISTICAL ANALYSIS RESULTS READ-OUT ........................................................................... 112
A.8 FUNCTION #7 – SPECIAL CONTROL FUNCTIONS .......................................................................................... 113
A.9 FUNCTION #9 – WRITE-IN THE DATA FILE INTO THE INTERNAL FLASH-DISC ......................................................... 117
A.10 CONTROL SETTING CODES ..................................................................................................................... 117
APPENDIX B. DATA FILE STRUCTURES........................................................................................................... 122
B.1 GENERAL STRUCTURE OF THE SV 973 FILES .............................................................................................. 122
B.2 STRUCTURE OF THE FILE CONTAINING RESULTS FROM LOGGER’S FILE ................................................................ 141
B.2.1. The contents of the files in the logger ........................................................................................... 142
B.2.1.1. Record with the results .......................................................................................................................... 142
B.2.1.2. Record with the state of the markers ..................................................................................................... 143
B.2.1.3. Record with the breaks in the results registration ................................................................................... 143
B.2.1.4. Record with the breaks account PAUSE in the results registration ........................................................... 143
B.2.1.5. Record with the wave file name ............................................................................................................. 143
B.2.1.6. Record with Summary Results ................................................................................................................ 144