PRAESENSA
LCD call station | PRA-CSLD, PRA-CSLW | en
131
Bosch Security Systems B.V.
Installation manual
2019.11 | V1.00 |
Business operation
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Full color 4.3" capacitive touch screen with intuitive function menu navigation provides
guidance and feedback during the process of live announcements, pre‑recorded
messages and music control. Successful broadcast of announcements/messages and
changes to the background music settings are clearly indicated.
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Built‑in monitor loudspeaker with volume control.
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Local audio line input (with stereo to mono conversion) for connecting an external audio
source. The audio channel will be available on the network and can be played in any
loudspeaker zone.
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Connection of up to four PRA-CSE extensions, each with twelve buttons. The buttons can
be configured for various functions, but they are especially useful for zone selection,
giving a clear overview of accessible zones and the LED indicators for each button show
the status of the respective zone (like being selected, occupied or at fault).
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If the call station is not used for a while, it will switch to sleep mode to save energy. It
will immediately wake up when the screen, or a button, is touched.
Only valid for the PRA-CSLD
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Press‑to‑talk button gives tactile feedback and is recessed to prevent accidental use.
Only valid for the PRA-CSLW
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Press‑to‑talk switch on hand‑held microphone.
Emergency operation
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The call station fully complies to the standards for voice alarm applications when the
firemen's user interface is configured and at least one PRA-CSE is connected to it.
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All critical alarm functions are accessible via buttons for operators wearing gloves. The
4.3" screen gives feedback on the system status.
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Each of the two RJ45 network connectors accept PoE to power the call station. This
provides fail‑safe network connection redundancy, as one connection is sufficient for full
operation.
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Supervision of all critical elements; the audio path is supervised, as well as the
communication to the network.
12.3
Functional diagram
Functional and connection diagram
Internal device functions
Fixed microphone on a flexible
stem
Internal monitor loudspeaker
Audio processing (DSP)
Power over Ethernet
OMNEO network switch
Controller
Press-To-Talk button
PRA-CSLD
Summary of Contents for PRAESENSA
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