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User Manual PS 230 / Issue 2011 © ASL Intercom BV
adjust the speaker listen level of the
corresponding channel to a minimum by
turning the side tone trimmers counter
clockwise (first trimmer #4 and then
trimmer #5; repeat this a few times)
Connect a headset to the PS 230 (the
speaker and gooseneck mic are now
automatically 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 the listen level of the
corresponding channel a bit by turning
side tone trimmer #4 clockwise.
The trimmers operating area is between fully
clockwise and minimum level.
Adjusting the side tone does not affect the level of
your voice as it is heard by other stations.
6
SPEAKER ATTENUATOR trimmer
This trimmer adjusts the extent to which the
speaker is automatically dimmed when the
gooseneck microphone 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 the
intercom channel are switched as well.
Adjustment procedure :
make sure there is no headset connected
feed an audio signal into one of the
intercom channels (via an AUX input on a
master station or a separate power
supply)
turn up the listen volume
activate the gooseneck microphone
adjust the desired degree of speaker
attenuation (turning the trimmer counter-
clockwise increases the attenuation)
7
BUZZER VOLUME trimmer
This trimmer adjusts the volume of the internal
buzzer. The buzzer is activated if a CALL button
of the PS 230 is pushed (or a CALL button of any
other station on a channel to which the PS 230 is
connected) longer than 2 seconds, provided there
is no ‘buzzer mute’ on one of the channels.
.
8
HEADSET connector
To this XLR-4 connector a headset may be
connected. The headset can must have an
impedance of 200 ohms minimum. When there 2
cans in parallel each can must have an
impedance of 400 ohms minimum. The headset
microphone may be of the dynamic or electret
type.
XLR-4 pin assignments :
Pin 1. Shield mic. (GND)
Pin 2. mic. +
Pin 3.
Pin 4. phones
When connecting a headset, the speaker and
gooseneck microphone are disabled
automatically.
9
GOOSENECK MICROPHONE
The PS 230 is equipped with an electret noise
canceling gooseneck microphone. A limiter
prevents the microphone preamplifier from
clipping when speaking close into the microphone
10
LOUDSPEAKER
A high quality loudspeaker driven by a 2.9 Watt
amplifier.
