Vox; Speech Filter; Phantom Power; Voice Alarm Router - Bosch Plena Operating Manual

82 en | Configuration
Mic/Line
Figure 6.5: VOX volume control
6.3.2

VOX

If the VOX switch is in the OFF position, the input is activated when the voltage of the signal
of the source is above the specified threshold. If the VOX switch is in the ON position, the
input is activated when the VOX Switch trigger input is closed (see also section Mic/line input
with VOX, page 59).
6.3.3

Speech filter

If the Speech filter switch is in the OFF position, a speech filter is activated for the mic./line
input with VOX functionality. The speech filter improves the speech intelligibility by cutting off
the lower frequencies.
6.3.4

Phantom power

If the Phantom power switch is in the ON position, a phantom power supply is activated. This
switch only has to be put in the ON position if the source is a microphone that must receive
phantom power. If the source is not a microphone or if the microphone does not accept
phantom power, leave the switch in the OFF position.
6.3.5

Voice alarm router

The voice alarm routers are configured using an ID selector and a DIP switch:
Out
GND
Booster 2
Booster 1
Figure 6.6: Router settings
6.3.6

Router ID

The ID of the voice alarm router is set using an ID selector (17). Each voice alarm router must
have a unique ID (1 to 19). Use a small screwdriver to turn the arrow in the correct position.
The DIP switch (15) has 3 switches. The first switch (left) determines whether the router has
address 0x (1 to 9) or 1x (10 to 19).
Notice!
The switch "Firmware upgrade" must be set to "ON" to execute the firmware upgrade. When
the upgrade is complete, the switch must be set back to "OFF".
6.3.7

Termination switch

The last voice alarm router in a sequence of looped-through routers must always be
terminated. Only for these voice alarm routers, put the Termination switch in the ON position.
2013.07 | V2.0 |
Vox
Speech filter
Phantom power
Off
On
Router
Termination
Firmware upgrade
In
ID
Off
Out
On
1...9
Installation and Operation manual
Firmware Upgrade
Plena
Bosch Security Systems B.V.