User manual

PAGE 4
User Manual PS 130 / October 2013 © ASL Intercom BV
1 VOLUME control knob
This knob adjusts the listen level for the headset
and the loudspeaker.
2 TALK button
This push button activates the gooseneck or
headset microphone. The large green LED
indicates if the microphone is switched on.
Momentary switching:
If the TALK button is pushed and held, the
microphone signal is sent to the intercom channel
until the button is released.
Latched switching:
If the TALK button is pushed quickly it is
electronically latched and the microphone signal
is sent to the 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 button
This push button activates the call system. By a
momentary push a visual call signal is sent to all
stations connected to the intercom channel and
the call LEDs start flashing. By keeping the CALL
button pushed for 2 seconds the call buzzer is
activated, provided there is no ‘buzzer mute’ on
the intercom channel. After the CALL button is
released the LEDs continue to flash for a further 2
seconds.
4 SIDE TONE LEVEL trimmer
This trimmer is for minimizing the speaker feeding
back into the gooseneck microphone (unit
feedback). It also determines the level of your
own voice as you hear it in the speaker or
headset.
5 SIDE TONE HI trimmer
This trimmer has the same function as trimmer
#5, but solely for the high frequencies.
Adjustment procedure for both side tone
trimmers:
• 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
• slowly turn up the listen volume
• speak into the gooseneck microphone
• adjust the speaker listen level 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 130 (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 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 the intercom
channel (via an AUX input on a master
station or a separate power supply)
• turn up the listen volume
• activate the gooseneck microphone (push
the TALK button)
• 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, which is located behind the front panel.
The buzzer is activated if the CALL button of the
PS 130 is pushed (or a CALL button of any other
station on the channel to which the PS 130 is
connected) longer than 2 seconds, provided there
is no ‘buzzer mute’ on the channel (buzzers are
muted by pushing a button on a master station or
a separate power supply).