User manual

PAGE 4
User Manual PS 630 / Issue 2011 © ASL Intercom BV
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5.0 FRONT PANEL CONTROLS & CONNECTOR
1 LISTEN LEVEL control knobs
These knobs preset the listen level for each intercom
channel. By turning the knob fully counter clockwise,
the channel is switched off. For receiving a Call signal
whilst the channel is switched off, see #17.
2 TALK buttons
These buttons allow talking to each channel
separately or to some or all 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 the referring intercom channel is
interrupted. By pushing the TALK button, the
connection is restored and one can talk to the
intercom channel 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, if not muted by a Buzzer
Mute signal received from a PRO Series master
station or separate power supply. After the CALL
button is released the LED’s continue to flash for a
further 2 seconds.
4 MASTER VOLUME knob
This knob functions as the master volume control of
the listen levels of the 6 intercom channels (see also
#1), for both the speaker and the headset.
5 PGM VOLUME knob
This knob adjusts the volume of the Program audio,
both for the speaker and the headset. Depending on
the setting of internal jumpers (see #18), the master
volume knob functions as a master control for both
PGM and intercom volume.
6 SIDE TONE LEVEL trimmers
These trimmers (one for each channel) control the
level of your voice as heard in your own loudspeaker
or headset.
7 SIDE TONE HI trimmers
These trimmers (one for each channel) control the
rejection in the high frequency range.
The trimmers #6 and #7 also minimize the speaker
feeding back into the gooseneck microphone (unit
feedback). 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
Connect a headset to this PS 630
push the TALK button of the channel of which
the side tone is supposed to be adjusted
turn up the listen volume of the PS 630.
speak into the headset microphone.
adjust the listen level (your own voice) by
turning the side tone trimmer.
The operating area is between fully clockwise and
minimum level.
For optimum result, repeat above mentioned
procedure for trimmers #6 and trimmer #7.
Adjusting side tones does not affect the level of your
voice as it is heard by other stations.