Annex Technical Data; Tones And Sound Levels Of The Interbase - Siemens DBS721 Technical Manual

9 Annex technical data

9.1 Tones and sound levels of the interbase

AI at 0°: AI at 90°: Vertical
Horizontal
Building Technologies
Fire Safety
To indicate the effective sound level of the DBS721 and DBS729 interbases, a
polar coordinate system is used in accordance with EN 54-3, Annex A. The zero
point (0°,0°) refers to the position of the alarm indicator (AI) in an inserted point
detector.
The direction of rotation from horizontal to vertical is counter-clockwise.
The measurements were performed with cover plate BP720 fitted.
Annex technical data
Tones and sound levels of the interbase
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2017-10-31