17
EV BMH
GENERALITIES
This standard microphone stand is the user PC keyboard for messages diffusion, for selection call
per zone, per area or general call . The communication with main central unit is done throughout a
Digital Bus. Such bus vehicles audio, the information exchange between the microphone stand and
main central unit. This stand is desk use and features:
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Gooseneck electret microphone.
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Call selection Keyboard.
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LCD Display rear illuminated for current operation visualisation.
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Double plug Bus for digital line data receipt and next microphone stand data sending .
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Dip Switch internal for numerical stand configuration.
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Plug for external power supply.
POWER SUPPLY
Microphone stand can operate in DC or AC and is supplied with a power supply 230Vac/12Vdc .
Close to the stand ensure to foresee a main 230Vac plug.
INPUT/OUTPUT SIGNAL CONNECTIONS
- MIC BUS
Plug RJ12 6/6 are used for chain microphone stand connections. This chain can involve up to 32
stands (including emergency call station VV.FF.). The Two plugs linked allow to connect digital
line in receipt from the central unit or from previous stand to next stand . The connections are UTP
CAT5 ( 3 twisted wires).
