User manual

PAGE 3
User Manual PS 130 / October 2013 © ASL Intercom BV
1.0 GENERAL DESCRIPTION
The PS 130 is a single channel speaker station.
It incorporates a headset connector, a speaker
and a gooseneck microphone and provides full
duplex communications.
The PS 130 RM model has a small built-in
electret microphone.
At the front panel are a Volume (listen level)
Control, a TALK and CALL button with LED
indicators, and trimmers for side tone, speaker
attenuation and buzzer volume.
The unit is equipped with a limiter for the
gooseneck microphone, allowing to speak close
into the microphone without giving rise to
overload and distortion.
Loudspeaker dimming is automatic if the
gooseneck microphone is active. Private
conversation may be carried out via a headset or
telephone handset plugged into the headset
connector. If a headset is connected, both the
gooseneck microphone and speaker are disabled
automatically.
Special attention has been paid to the intelligibility
of speech. By applying low noise/high speed op-
amps, a speech presence filter and a specially
developed high power bridged headphone
amplifier, communication is very comfortable even
in environments with high back-ground noise
level. There is a separate amplifier for the
loudspeaker.
The unique ASL CALL system provides both a
flashing red LED and a very characteristic sound
signal (the buzzer). Smooth operation is
guaranteed with the CALL button. Only a slight
touch makes the red LED flash, whilst holding the
button for two seconds activates the CALL sound
signal. The volume of this signal (the buzzer) can
be adjusted at the front panel.
Fully electronic switching increases reliability and
allows for :
- 'soft' microphone ON switching, latching or
momentary
- remote Mic Mute facility
- automatic speaker attenuation (adjustable),
when the microphone is activated
2.0 INSTALLATION
Use the LINE connector on the side panel of the
PS 130 to connect the unit to the intercom line.
The necessary DC voltages are derived from a
master station or a separate power supply, via the
intercom connection cable. Use professional
flexible microphone cable with 2 wires and 1
shield only
The PS 130 is fully protected against wiring
mistakes (reverse power) or short circuit in the
interconnecting cables.
A special kit is available for mounting the PS 130
in a 19" rack, taking 2U of rack space.
3.0 FRONTPANEL CONTROLS & CONNECTORS