Bosch PRAESENSA PRA-AD604, Руководство по настройке

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PRAESENSA Tones | en 159
Bosch Security Systems B.V. Configuration manual 2020-09 | V1.20 | PRAESENSA 1.20
– Alarm_SW_650-1100-650Hz_50%_40x(0.125+0.125)s.wav
–
Sweep 650 Hz - 1100 Hz, up and down in 0.125 s, 0.125 s off, 40 repetitions
– Duty cycle 50%, Peak level -6 dBFS, RMS level <-9 dBFS
– Offshore “H2S alarm”
19.3 Test tones
Test tones are mainly used for testing the audio output and loudspeaker zones (e.g. adjusting
the audio signal (filter) levels).
Filename format: Test_<purpose>_<duration>.wav
–
Test_Loudspeaker_AB_20kHz_10s.wav
–
Sine wave 20 kHz, peak level -20 dBFS, RMS level -23 dBFS, 10 s
– Inaudible signal to drive the A-group loudspeakers and check connectivity of the A-
and B-loudspeakers simultaneously while the building is occupied, the B-
loudspeakers get a 22 kHz signal
– The A-loudspeakers are connected to their own zone amplifier channel; this zone
gets the 20 kHz signal
– Keep smartphone in front of the loudspeaker, a smartphone spectrum analyzer
detects both the 20 kHz and the 22 kHz simultaneously
– Test_Loudspeaker_AB_22kHz_10s.wav
–
Sine wave 22 kHz, peak level -20 dBFS, RMS level -23 dBFS, 10 s
– Inaudible signal to drive the B-group loudspeakers and check connectivity of the A-
and B-loudspeakers simultaneously while the building is occupied, the A-
loudspeakers get a 20 kHz signal
– The B-loudspeakers are temporarily connected to another amplifier channel, for
another zone; this zone gets the 22 kHz signal
– Keep smartphone in front of the loudspeaker, a smartphone spectrum analyzer
detects both the 20 kHz and the 22 kHz simultaneously
– Test_LoudspeakerPolarity_10s.wav
–
Filtered sawtooth 50 Hz, peak level -12 dBFS, RMS level -20 dBFS, 10 s
– Audible signal to detect proper polarity of connected loudspeakers
– Smartphone oscilloscope detects a positive or negative sharp peak, that should be in
the same direction for all loudspeakers
– Test_PinkNoise_30s .wav
–
Pink noise signal 20 Hz - 20 kHz, peak level -3 dBFS, RMS level -16 dBFS, 30 s
– Audible signal for acoustic measurements
– Test_Reference_440Hz_10s.wav
–
Continuous 440 Hz sinewave, 10 s
– Duty cycle 100%
– Test_STIPA_BedrockAudio_100s.wav
–
STIPA testsignal, peak level - 4.2 dBFS, RMS level -11 dBFS, 100 s
– Test signal to measure the speech intelligibility via the Speech Transmission Index
– Copyright Bedrock Audio BV ( http://bedrock-audio.com ), used with permission
– Compatible with all STIPA meters compliant to IEC 60268‑16 Ed. 4 (Bedrock Audio,
NTi Audio, Audio Precision)
– The signal can be looped. A 440 Hz beep signal of -12 dBFS, duration 1 s, marks the
beginning of the 100 s test signal. Start the measurement after this beep, so the
measurement will not be disturbed by a gap between end and restart.
– A measurement cycle takes a minimum of 15 s