PAGE 4
User Manual PS 230 / Issue 2011 © ASL Intercom BV
4.0 FRONTPANEL CONTROLS & CONNECTORS
1
VOLUME control knobs
Theses knobs, one for each channel. adjust the
listen level for the headset and the loudspeaker.
2
TALK buttons
These push buttons, one for each channel,
activate the gooseneck or headset microphone.
The large green LEDs indicate if the microphone
is switched on.
Momentary switching:
If a TALK button is pushed and held, the
microphone signal is sent to the corresponding
intercom channel until the button is released.
Latched switching:
If a TALK button is pushed quickly it is
electronically latched and the microphone signal
is sent to the corresponding intercom channel.
If pushed again, the TALK button switches off.
Mic Mute when latched on:
After on the intercom channel a so-called MIC
Mute signal has been received from a PRO
Series master station or separate power supply,
the connection between microphone and intercom
channel is interrupted. By pushing the TALK
button the connection is restored again.
3
CALL buttons
These push buttons (one for each channel)
activate the call system.
By a momentary push a visual call signal is sent
to all stations connected to the corresponding
intercom channel and the call LEDs start flashing.
By holding a CALL button pushed for 2 seconds
the call buzzer is activated, provided there is no
‘buzzer mute’ on one or both intercom channels.
After the CALL button is released the LEDs
continue to flash for a further 2 seconds.
4
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.
5
SIDE TONE HI trimmers
These trimmers, one for each channel, have the
same function as trimmer #5, but solely for the
high frequencies.
Adjustment procedure for both side tone
trimmers, for each channel separately:
set trimmer in start position: fully clockwise
switch off the microphones of all
connected (speaker) stations
make sure there is no automatic speaker
attenuation (turn trimmer #6 fully
clockwise)
push the TALK button of the
corresponding channel
slowly turn up the listen volume
speak into the gooseneck microphone
