Notices; Documentation And Software Download; Software Update; Fault Event - Temperature Too High - Bosch PRAESENSA Release Notes

12 en | Notices
4

Notices

System characteristics that are normal and intended, but possibly not expected.
4.1

Documentation and software download

Multi‑lingual PRAESENSA product documentation and software is available from
www.boschsecurity.com
PRAESENSA software and English documentation is here:
publicaddress.
4.2

Software update

If an updated configuration was created with a newer software version, it should not be used
on an older software version.
Always store and keep backups of the current configuration before upgrading.
4.3

Fault event - Temperature too high

If the amplifier detects temperature higher than +90 °C, the output level is attenuated by -3 dB
in order to counteract this. The -3 dB attenuation is removed after the fault is acknowledged
and reset. Before the fault can be cleared the temperature needs to drop below +80 °C.
4.4

Load measurement

The amplifier loudspeaker load measurement is part of the configuration (Diagnose > Amplifier
loads). It is an essential step in the system configuration to do a load measurement to check
whether the amplifier channels and the amplifier are not overloaded. Without this check, the
amplifier channel volume is automatically set to -12 dB to protect the amplifier from
unexpected overload conditions in case of an alarm situation.
4.5

Audio equalizer

The DSP audio equalizers have an internal headroom of 18 dB. Do not use audio equalizer
settings with an accumulated gain of more than 18 dB at any frequency, as this will cause
audio clipping for full scale input signals. It is good practice to do most of the frequency
response corrections by attenuation of prominent frequency bands.
4.6

Minimum message length

The minimum message length for repeating messages is 500 ms.
4.7

Logging server compatibility

In release 1.10 the Open Interface of the System controller was updated, incompatible with
the Logging Server of release 1.00. To continue receiving diagnostic events from the System
controller, the Logging Server with the Open Interface .NET library must be updated to release
1.10.
4.8

System controller redundancy configuration

When a second System controller is added to a system for redundancy, the second System
controller must be reset to factory default.
4.9

Brightness adjustment

The brightness adjustment of the PRA-CSLD and PRA-CSLW LCD and PRA-CSE LEDs is only
supported on devices with HW version 01/01 and higher.
2023-05 | V1.81 |
> PRAESENSA product section. An additional download area for
Release notes
https://licensing.boschsecurity.com/
Bosch Security Systems B.V.
PRAESENSA