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5.0
FRONT PANEL CONTROLS & CONNECTOR
1
LISTEN LEVEL control knobs
These knobs preset the listen level for each channel
separately.
2
TALK buttons
These push buttons allow talking to each channel
separately or to some channels simultaneously.
When a TALK button is switched on, its large green
LED is lit.
Momentary switching:
When a TALK button is pushed and held, the
microphone signal is sent to the referring intercom
channel until the button is released.
Latched switching:
When a TALK button is pushed shortly, it is
electronically latched and the microphone signal is
sent to the referring intercom channel. When pushed
again, the TALK button switches off.
Mic Mute when latched on:
After on an intercom channel a so-called Mic Mute
signal has been received from a PRO Series master
station or power supply, the connection between
microphone and that intercom channel is interrupted.
By pushing the TALK button, that connection is
restored again.
3
CALL buttons
These push buttons activate the call system, for
each channel separately. By a momentary push a
call signal is sent to all stations connected to the
referring intercom channel and all Call LED's start
flashing. Pushing and holding the CALL button for 2
seconds activates the call buzzer, provided there is
no buzzer mute signal on the referring channel.
After the CALL button is released the LED's continue
to flash for a further 2 seconds.
PAGE 4
User Manual PS 430 / Issue 2011 © ASL Intercom BV
.
4
MASTER VOLUME knob
This knob functions as the master volume control of
the listen levels of the 4 intercom channels (see also
#1), for both the speaker and the headset.
5
SIDE TONE LEVEL trimmers
These trimmers (one for each channel) are for
minimizing the speaker feeding back into the
gooseneck microphone (unit feedback); They also
determine the level of your own voice as you hear it
in the speaker or headset.
6
SIDE TONE HI trimmers
These trimmers have the same functions as
trimmers #5, but solely for the high frequencies.
Adjustment procedure, for each channel separately:
o
set trimmers in start position: fully clockwise
o
switch off the microphones of all connected
(speaker-) stations
o
make sure that there is no automatic
speaker attenuation (turn trimmer #7 fully
clockwise)
o
push the TALK button of the channel of
which one wants to adjust the side tone.
o
Slowly turn up the listen volume of the PS
430 (channel- and master volume).
o
speak into the gooseneck microphone
o
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)
o
connect a headset to the PS 430 (the
speaker and gooseneck are now
automatically disabled) and speak into the
headset microphone
o
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.