User's Manual
82
41 CorrelateSoundSignals(StandardProfessionalVersion)
TheCorrelationwindowmaybedisplayedbyselectingtheappropriatemenuitemorfunctionbuttoninthe
main window or by simply pressing F7. It allows correlati ng of the sound signals of two loggers in order to
calculateleakpositions.
Howtocorrelate:
1.Selectloggers
EnterloggerNo.orusenavig
ationbuttonstoselectlogger1andlogger2:
When selecting the same logger No. as logger 1 and 2 auto correlation will be performed, otherwise the
soundsignalswillbecrosscorrelated(normaloperationmodeforleaklocation).
2.Selectsoundrecordings
Clickondesiredsoundrecordinginthesoundrecordingslistoflogger1orlogger2.
Afterselecting aso
undrecordingof alogger, the softwareattempts tofinda fittingsoundrecording inthe
logger list of the other logger. If an appropriate sound recording is found, it will be automatically selected.
Crosscorrelation(leaklocation) isonlypossibleincasethe2selectedsoundre
cordingshavebeen recorded
atthesamedateandtime.
42 Sync.Numbers
Newer versions of the logger firmware provide ‘Sync. Numbers’, in order to recognize whether the sound
recordingshavebeenmadewiththesametimesynchronizationornot.Incasea‘Sync.No.’exists(seebelow
sound re
cordingslist), the ‘Sync. Numbers’ of the 2 sound recordings have to be the same. The ‘Sync.No.’
willincreasewitheveryswitch‐onoftheSystemCommunicationLink.