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Bosch Security Systems | 2011-02
Praesideo 3.5 | Installation and User Instructions | EN60849: 1998 en | 18
EN60849 - 5. System technical requirements
EN60849 - 5.1 Speech intelligibility
EN60849 - 5.2 Automatic status indication
EN60849 - 5.3 Automatic fault monitoring
Requirement Compliance Signature
Unless otherwise specified, the following requirement
shall be satisfied:
The speech intelligibility over all of an area of coverage
(see 3.1) shall be greater than or equal to 0,7 on the
common intelligibility scale (CIS). See annexes A and B
for the conversion between CIS and other scales of
intelligibility. The noise level (see B.5) at the time of
measurement (but in the absence of the test signal)
and the test signal level shall be stated with the test
result.
NOTE - If the persons who are required to understand
the messages are, or will be, reasonably familiar with
them through regular system tests, the effective
intelligibility tends to increase by approximately 0,05 on
the CIS if the intelligibility is in the range 0,6 to 0,7. This
may apply, for example, in an office building. However,
in a sports ground, for example, most of the messages
are likely to be relatively unfamiliar to the majority of
persons present, and no relaxation of the above
requirement should be considered.
Responsibility of the installer.
The system specification may exclude from the area of
coverage, defined areas rarely or never occupied by
people.
Responsibility of the installer.
Requirement Compliance Signature
A clear indication shall automatically be given at the
designated control locations of:
a System availability. Compliant. Indication on call stations if properly
installed.
b Power supply availability. Compliant. Indication on call stations if properly
installed.
c Any fault condition. Any fault is indicated by a control output of the Network
Controller, if properly installed.
d (For systems having numerous loudspeaker zones),
which loudspeaker zones are selected and the
mode of operation of each zone, i.e. "evacuate" or
"alert" and pre-selection of emergency microphone.
Where different alarm messages are provided,
which are dependent on the evacuation
requirements, indication of which message is being
broadcast and into which zone, shall be displayed
by a suitable method. This information shall be
continuously displayed and kept up to date.
Compliant.
Requirement Compliance Signature
A clear indication shall automatically be given, at
specified locations, e.g. at main equipment locations,
of:
a Short-circuit or disconnection or failure of the
primary power source.
Compliant, if properly installed. Responsibility of the
installer. (UPS should be monitored via control input.)
b Short-circuit or disconnection or failure of the
standby power source.
Compliant, if properly installed. Responsibility of the
installer. (UPS should be monitored via control input.)
c Short-circuit or disconnection or failure of any
battery charging equipment associated with the
primary or standby power sources.
Responsibility of the installer. Supervision of third party
charging equipment is via control inputs.
d Rupture of any fuse or operation of circuit breaker,
isolator or protective device that may prevent an
emergency broadcast.
Compliant. Fault is indicated by a control output of the
Network Controller, if properly installed. Fault is also
displayed by the Network Controller and the Logging
Viewer (optional).