User Manual
17
8.2 KEYS FUNCTIONS
•PRIORITYkey
Suchkeyallowstheoperatortoforcethecommunicationtowardsthecustomerdisablingautomaticallythe
external microphone.
In this case the front-office personnel channel is active whilst the customer channel is disable .
Veryusefuloptionwhentheoperatormustspeakforawhile.
• SPEAK + 3 Db Key
Suchkeyallowtoincreasetemporarilythevolumetowardcustomerside.Suchdeviceisveryusefulwhen
thecustomerszoneissubjecttobackgroundnoiseorbecausetherecouldbecustomersofdeafness
inconveniences.
• PACALLkey
Suchkeyallowstheoperatorcallstationtosendaudiosignaltowardsanexternalzone-forexampletothe
mainpublicaddresssystem.InthiscasetheInterphonesystemisusedasasimplemicrophonedeskforcalls
and announcements.
WhenthereisnoPublicaddresssystemsuchPACALLkeyisnotused.
When INCOM unit is powered on , the system is set automatically on full-duplex operating mode, for such
operatingmodebothcustomer/operatoraudiochannelsareactive;Thecustomerandoperatorcancommunicate
alternatively throughout a normal oral information exchange. The ANTILARSEN device is active.
The operator can always force the communication towards the customer applying to PRIORITY key, half-duplex
operating mode
9. INSTALLATION INSTRUCTIONS- CONNECTIONS AND ADJUSTMENTS
9.1 CUSTOMER SIDE AND MICROPHONE POSITION
The directional electret microphone must be set possibly in the middle of the glass counter. To be confront
the customer. Such position ensures the most efficient speech quality. fig. 3
9.2 CUSTOMER SIDE- LOUDSPEAKER POSITION
Toavoidlarseneffectstheloudspeakerpositionmustbecarefullystudied.
nfacttheloudspeakermustbesetclosetothemicrophone.Buttheloudspeakerpositionshould
bestudiedtoavoidtothemicrophonetheloudspeakerirradiationconeeffects fig.4.
INCOM system audio efficiency is subject to single components position
fig.3 fig.4