Bosch Security Systems | 2004-06 | 9922 141 10371en
Plena Voice Alarm System | Installation and Operating | Configuration en | 49
Using the Configuration Software, it is possible to:
• Adjust the measurement interval by choosing one of
the predefined values (30 seconds - 24 hours).
• Adjust the preset differential accuracy (5 - 20%).
• Define a preset starting time, to automatically trigger
an impedance supervision measurement, once every
day.
Short-to-ground supervision
If supervision is enabled (see section 5.3.3), the
controller continuously monitors all loudspeaker lines in
the system for short-to-ground situations. If a leakage
current > 30 +
15 mA is detected in a line, all lines are
considered faulty.
5.3.3.6 Emergency microphone supervision
If supervision is enabled (see section 5.3.3), the audio
path of the emergency microphone is monitored from
the microphone’s capsule to the input connector on the
controller.
5.3.3.7 Trigger input supervision
If trigger input supervision is enabled, the EMG trigger
inputs of the controller and of any connected routers,
are supervised. The bussiness trigger inputs are not
supervised.
5.3.3.8 Mains power supervision
If supervision is enabled (see section 5.3.3), the
availability of the mains power is supervised.
5.3.3.9 Battery power supervision
If battery power supervision is enabled, the availability
of the battery power is supervised.
5.3.3.10 Internal booster supervision
If supervision is enabled (see section 5.3.3), the internal
booster of the controller is supervised. The function of
this booster depends on the position of the 2ch operation
switch (see also section 5.3.4).
5.3.3.11 20 kHz VOX input supervision
If VOX 20kHz input supervision is enabled, the 20 kHz
mic/line input with VOX functionality of the controller
is supervised.
5.3.3.12 External booster supervision
If supervision is enabled (see section 5.3.3) and the
2ch operation switch (see section 5.3.4) is in the ON
position, the external booster is supervised. In 2-channel
mode, the external amplifier is always the call booster.
Note
For a correct impedance supervision:
Do not connect more than 5 loudspeakers to
the same loudspeaker line and make sure that
all loudspeakers, that are connected to the
same loudspeaker line, have the same
impedance.
Note
Refer to the Configuration Software Manual
(9922 141 10381) for details about configuring
line supervision.
table 5.3: Internal booster functions
Operational mode Function
1-channel BGM/Call booster
2-channel BGM/Spare booster
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