User manual PS 6379 / Issue 1 © 2006 ASL Intercom, Utrecht, The Netherlands
4
2.0 GENERAL DESCRIPTION
The PS 6379 is designed to be a six channel loudspeaker
master unit in an ASL Intercom system and can be used
in portable as well as fixed applications.
It incorporates a power supply, auxiliary inputs, program
input, headset connector, loudspeaker and a gooseneck
microphone, stage announce output, IFB Mode, Paging
Mode, Near Station Mode and Extended Mode (see
section 9 for further explanation of each Mode) and
provides full duplex communications within an ASL
intercom system. The PS 6379 RM model has a small
built-in electret microphone. The power supply supplies
power to a max. of 60 Beltpacks or 30 Speaker Stations.
Each channel has a Volume (listen level) control, a Talk
and Call button with LED indicators and a two-stage
sidetone trimmer. A master volume controls the total
speaker/headset volume.
The unit is equipped with a limiter for the gooseneck
microphone, allowing the user to speak close into the
microphone without giving rise to overload and distortion.
Loudspeaker dimming is automatic when the microphone
is active. Private conversation may be carried out via the
headset connector with a headset or telephone handset.
When a headset is connected, both gooseneck
microphone and speaker are switched of automatically.
The speaker can be then switch on again with the
Speaker on/off button.
As an option, a XLR-6 headset connector can be fitted for
binaural use of the headset. By setting internally mounted
jumpers, each of the 6 channels can be assigned to
either the left or the right headset can, or to both headset
cans.
An electronically balanced input allows volume controlled
monitoring of the audio signal. This is for local use only, it
will not appear on the intercom lines.
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 CALL system provides both a flashing red
LED and a very distinctive and characteristic sound
signal. A short push of the CALL button will make the
LED flash. The Call sound signal (buzzer) will be
activated when holding the button for two seconds. In
case the sound signal is undesirable, all buzzers can be
muted with the “All buzzers on/off” button and the volume
of the buzzer can be adjusted at the front panel.
The pre-amplified microphone signal is electronically
balanced available at a 3 pin male XLR. This signal can
be sent to paging systems.
Fully electronic switching increases reliability and allows
for :
- 'soft' microphone ON switching, latched or momentary
- remote Mic Mute facility.
- automatic speaker attenuation (adjustable), when the
microphone is activated.
3.0 UNPACKING
The shipping carton contains the parts listed below:
* The PS 6379
* power cable
* User manual
* 2 x Fuses
* 19” rackmount flares
If any are missing, contact your dealer.
ASL has taken great care to ensure this product reaches
you in flawless condition.
After unpacking the unit please inspect for any physical
damage to the unit, and retain the shipping carton and
relevant packing materials for use should the unit need
returning.
If any damage has occured, please notify your dealer
immediately so that a written claim can be initiated.
Please also refer to the guarantee section of this
manual.
4.0 INSTALLATION
This PS 6379 will form part of an existing or new
intercom system, and connection to it is straightforward.
Adequate ventilation must be provided by allowing
sufficient space around the sides and rear of the unit to
ensure free circulation of air. Forced cooling is not
required. The power supply is mounted on the bottom of
the unit, and after a period of time it will feel hot to the
touch at the bottom. This is normal, and should be no
cause for alarm.
To connect the PS 6379 onto the intercom system, use
professional flexible microphone cable with 2 wires and
1 shield only. Connect the system intercom cables into
the LINE connector sockets on the rear panel. Finally,
when private conversation is desired, connect the
headset plug into the headset connector on the front of
the front panel.
The PS 6379 is fully protected against mis-wiring
(reverse power) or short circuit in the interconnect
cables.
A special kit is included for mounting the PS 6379 in a 19"
rack, taking 2U of rack-space.
