ASL INTERCOM PS 430 Manual del usuario - Página 6
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speak into the gooseneck microphone
•
adjust the speaker listen level to a minimum by turning the side tone trimmers
•
counter-clockwise (first trimmer #5 and then trimmer #6; repeat this a few times)
connect a headset to the PS 430 (the speaker and gooseneck are now automati-
•
cally disabled) and speak into the headset microphone
check whether the level of your voice in the headset can(s) is sufficient. If not, push
•
up this level a bit by turning side tone trimmer #5 clockwise.
The trimmer operating area is between fully clockwise and minimum level. Adjusting the
side tones does not affect the level of your voice as it is heard by other stations.
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SPEAKER ATTENUATOR trimmer
To adjust the extent to which the loudspeaker is automatically dimmed if the gooseneck
mic is switched on. It prevents unit feedback if side tone rejection is not sufficient.
It also minimizes system feedback or a 'hollow' sound when the gooseneck microphones
of other speaker stations (on one or several of the connected party lines) are switched on
as well.
Adjustment procedure:
make sure that there is no headset connected
•
switch off all TALK buttons of the PS 430.
•
inject an audio signal on one of the intercom channels via the aux input of a Pro
•
Series master station or separate power supply
turn up the listen volume of the PS 430 (channel – and master volume).
•
activate the gooseneck microphone (push the TALK button of the selected channel)
•
adjust the desired degree of speaker attenuation (turning the trimmer counter- clockwise
increases the attenuation)
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BUZZER VOLUME trimmer
This trimmer adjusts the volume of the buzzer, which is located behind the front panel.
The buzzer is activated if the CALL button of the PS 430 (or a CALL button of any other
station on the party lines to which the PS 430 is connected) is pushed for longer than 2
seconds, provided there is no Buzzer Mute Signal on these party lines coming from a Pro
Series master station or separate power supply.
9
HEADSET connector
This is an XLR-4 connector for the connection of a local headset if private conversation is
desired. The headset must have a can impedance of minimum 200 ohms. In case the
headset has two cans in parallel, each can must have an impedance of minimum 400
ohms.
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