5
PRO SERIES FEATURES
■ One, two, four, and six channel user stations
■ Strong ABS beltpacks for light weight or strong aluminium
beltpacks for durability.
■ Separate CALL and TALK functions with large LED
indicators
■ Unique visual and audible call system with volume
trimmers
■ Remote mic mute and buzzer (audio call) mute
■ Powering for dynamic or electret headset mics as standard
■ Headphone volume and dynamic range exceeds normal
industry standards
■ Extended frequency response and proprietary frequency
correction for high intelligibility
■ Individual sidetone and buzzer volume
trimmers at each user station
■ Auto resetting power supplies for 110/240 V mains
■ Auxiliary program inputs
■ Electronic switching
■ Automatic headset detection
■ Optional binaural headset operation for multi
channelstations
The PRO series of ASL Intercom
Products offers a complete and pro-
fessional solution for any size of
network where a full duplex party-
line communication system is requi-
red, that is based on a standard
balanced mic cable interconnect
system. The installation requires no
expert knowledge and a fool-proof
wiring concept with superior con-
trol layout allows easy installation
and comfortable operation.
A current driven interconnect loop ensures
operator listening levels do not change as
stations are added or removed from the
network.
High power push-pull headphone amplifiers
provide an extensive dynamic range of
80dB over a frequency range of 200Hz to
15kHz. Proprietary frequency contouring
circuitry ensures high intelligibility for voice
communications.
HEADSETS
Headsets with dynamic or electret micro-
phones can be connected as standard.The
mic gain can be adjusted internally to suit
all possible input levels, and a headset
detection circuitry ensures the mic pre-amp
is active only when a headset is connected.
Headset/Speaker volume controls enable
the user to listen to the communication sig-
nal at any required level and, at multichan-
nel stations, at any required balance.
POWER SUPPLIES
All the power supplies are fully protected
such that if there is a short circuit, faulty
wiring or a dangerous thermal condition,
power will be reduced and eventually shut
down.To indicate this condition a warning
LED will light up. Once the faulty condition
has been removed, the power will auto-
matically reset and full power will be
restored.
CALL
A combined visual and audio call system
covers light and/or sound sensitive environ-
ments. CALL buttons enable the user to
generate a call signal to each channel sep-
arately.An incoming or outgoing call signal
is indicated by a large red LED. If a CALL
button is held for more than 2 seconds, the
internal audio buzzer is activated.The vol-
ume of the buzzer can be trimmed or
muted.
TALK
Latching or momentary TALK buttons with
LED indicator enable the user to talk to one
channel only or to a number of channels
simultaneously.The MIC MUTE feature
allows station mics to be remotely muted.
SIDE TONE
For each channel at each user station, a
sidetone trimmer is provided to adjust the
level of the users voice as heard over his
own headset or loudspeaker.
AUX PROGRAM INPUT
An auxiliary program input on the master
station and all power supply units, with
selectable line or phantom powered mic
settings, feeds auditorium program onto
the intercom line.The input is electronically
balanced and switchable between line or
30V phantom powered mic level inputs.
For applications that require it, interface
units are available allowing connection of a
PRO series intercom network onto a 4-wire
communication system, onto a telephone,
2-wire, system,or a connection to simplex
wireless systems
PRO SERIES INTRODUCTION
PRO SERIES TECHNICAL SPECIFICATIONS
SYSTEM SPECIFICATIONS
intercom line impedance 350 ohms (1 kHz), 2.2 Kohms (DC)
intercom line audio level nom.-18 dBu, max. +4 dBu
dynamic range 80 dB
call send signal 2.8 mA
call receive signal threshold +2.4 V DC
supply voltage +30 V DC (12 V to 32 V)
power interrupt time for mic mute 0.1 sec
POWER SUPPLY
mains voltage range 100 - 240 V AC 50/440 Hz autoselect
DC output voltage +30 V +/-2% DC
max. output current PS 278/280: 2 A continuous / 3 A peak
PS 680: 4 A continuous / 6 A peak
circuit breaker delay time 0.2 sec
automatic reset time 3.0 sec
MIC. PREAMP
gooseneck microphone type noise cancelling electret
headset mic. impedance 200 ohms
gain 40 dB - 60 dB (adjustable internally)
presence filter +6 dB at 5 kHz
frequency response 200 Hz - 15 kHz (-3 dB)
V electret mic +9 V DC
limiter range (gooseneck mic) 30 dB
HEADPHONES DRIVER AMP
max. load 100 ohms
max. output level normal 17 V rms
binaural 2x 8,5 V rms
max. output power normal 1 W rms (at 200 ohms)
binaural 2x 0.2 W rms (at 400 ohms)
SPEAKER DRIVER AMP (PS 130/230/430/630)
speaker impedance 16 ohms
max. output power 1.3 W rms
SIDETONE
rejection 0 - 30 dB adjustable
BUZZER
max. SPL 100 dBA
AUX INPUT (PS 278/280/680)
input impedance 11 Kohms
gain 0 dB (line level)
20 dB to 40 dB adjustable (mic level)
nominal input level -20 dBu to +10 dBu (line level)
-60 dBu to -10 dBu (mic level)
max. input level +21 dBu (line level)
0 dBu (mic level)
phantom power +30 V DC (mic level selected)
PROGRAM INPUT (PS 630)
input impedance 47 Kohms
nominal input level -12 dBu to +6 dBu
max. input level +16 dBu
DIRECT MIC OUTPUT (PS 630)
output impedance 50 ohms (balanced)
nominal output level +6 dBu
max. output level +24 dBu
Note: 0 dBu defined as 775 mV rms into open circuit.
In keeping with our policy of continued improvement,ASL reserve the right to alter
specifications without further notice.This range of products was designed, developed
and produced by ASL Intercom BV, Utrecht,Holland.
PRO SERIES
(18 pages)
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comments to this Manuals