Clause / Requirement Compliance Signature
The VACIE output power shall be as
declared by the manufacturer.
The output power of the amplifier
elements of the Plena Voice Alarm
System (Power Amplifiers, Basic
Amplifiers) are specified in the
data sheets and in the IUI.
13.12.2 Signal-to-noise ratio
The VACIE shall have an A-weighted
signal-to-noise ratio of at least 45 dB (see
IEC 60268-1).
The A-weighted signal-to-noise
ratio of the Plena Voice Alarm
System amplifiers (Power
Amplifiers and Basic Amplifiers) is
specified in the data sheets and in
the IUI. The signal-to-noise ratio is
above 75 dB. The complete signal
chain from microphone to
loudspeaker is compliant to this
clause.
13.12.3 Frequency response
The frequency response of the VACIE
shall fit within the non-shaded area in
Figure 1 for sound sources without
microphone(s) (e.g. message store) and
Figure 2 for sound sources with
microphone(s).
VACIE frequency response limits without
microphone(s)
Key
The frequency response of all
Plena Voice Alarm System sound
paths that do not include
microphones is within the
specified limits of this clause.
1 relative output signal level, with
reference to 0 dB signal level
measured at 1 kHz (dB)
2 1/3 octave frequency band (Hz)
Plena Appendices | en 181
Bosch Security Systems B.V. Installation and Operation manual 2013.07 | V2.0 |
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