BAT BATmode 2S User Manual page 62

53 USER MANUAL BATMODE 2S/2S+ SYSTEM
bat bioacoustictechnology recommends to recalibrate microphones after each year of
monitoring. This is necessary to consider sensitivity alternations of the microphone
and/or changes of the sound pressure level of the test signal speaker, which can be
caused by ageing, dirt particles or influences of weather. If you wish to recalibrate your
microphone and test signal speaker, contact the support of bat bioacoustictechnology
and send the microphones.
To make recorded acoustic data compatible with the evaluation software ProBat, a
trigger level threshold of 37 dBSPL or 50 dBSPL must be selected. bat
bioacoustictechnology recommends to set the trigger level threshold to 37 dBSPL and
only use 50 dBSPL for wind turbines with a very high noise level. Please, consider the
enclosed documents of the PROBAT software.
Depending on the currently connected UltraSoundGates, the values set during the last calibration are
given in the following format under the button <Change Calibration>:
Full Scale Level of Reference Signal in dBFS | SPL of Reference Signal in dBSPL | Level of Trigger
Threshold in dBSPL
4.2.3.4 Settings
Use the <Channel Names ...> dialog to specify channel names if multiple measurement channels are
utilized. These names determine the storage location of the recorded WAV files (selected monitoring
directory + "\ Channel Name \"), as well as the identification of the respective channels in the
evaluation plots. If the BATmode system is only used for a single measurement point, the definition
of a channel name is not necessary and the files are stored directly in the selected monitoring
Figure 34: Calibration Dialogue