ASL INTERCOM PS 430 Manual de usuario descargar pdf (Pagina 3)

Power Supply Section

The built-in power supply can safely

drive 20 beltpacks or 10 dual channel

speaker stations, or a combination of

the two.

TALK and CALL Functions

For each channel a TALK and a CALL

button is provided, both with a large

LED indicator.

Volume Controls

For each channel a headset volume

control is provided.

Mic Mute

An ALL MICS MUTE push button is

provided, allowing the user to mute

the microphones of all connected PRO

Series user stations. When the PS 278

is turned on, all mics are muted auto-

matically.

Buzzer Mute

The PS 278 is provided with an ALL

BUZZERS MUTE push button allowing

the user to mute the buzzers of all

connected user stations.

AUX Program input

A XLR-3 connector on the rear panel

allows access to the intercom lines for

external audio signals. On the front

panel an AUX signal volume control is

The PS 278 is a 2-channel intercom station with a built-in power supply,

housed in a 19”/1U metal case. It provides all the features necessary for

a two channel communication system, in conjunction with the PRO

Series beltpacks and speaker stations.

The intercom system shall be of

the full duplex type and consist

of one or more party lines

(so-called 'channels'), to which

all user stations are connected,

enabling the users to 'talk' and

'listen' simultaneously.

The user stations shall be powered

by intercom power supplies with

built-in line impedance via the

interconnecting cables.

All interconnecting cables shall be

of the balanced microphone cable

type with connectors of the XLR-3

type.

All user stations shall have heavy-

gauge steel, aluminium or strong

ABS housing and high quality con-

trols and connectors.All rack mount

housings shall be of 19" format.

All user stations shall provide auto-

matic headset detection and reverse

power protection.

All intercom audio circuitry shall

provide a dynamic range of 80dB

and a frequency range of 200 Hz to

15 kHz (-3dB), high power amplifi-

cation for headsets of 1 W rms, and

a 'high intelligibility' frequency cor-

rection.

All user stations shall have a CALL

system, offering both flashing visual

and audible signalling. It shall be

possible to centrally disable all audi-

ble CALL signals. Each channel shall

have its own CALL button and CALL

indicator on each station.All user

stations shall have volume control

of the audible CALL signal and, for

each channel, trimmers for side-

tone adjustment.

All user stations shall have 'Mic

Mute' circuitry.A Mic Mute push

button on the intercom power sup-

ply shall enable the user to centrally

disable all microphones connected

to the user stations.

All 'Mic On'(Talk) switches shall

have three positions: 'on', 'off' and

'momentary on'. It shall be possible

to connect any dynamic headset

with headphone impedance 100

ohms - 2K ohms and with a dynam-

ic or electret microphone.

All power supplies shall be of the

switched mode type and maybe

connected to mains voltages from

100 - 240 V AC (50/440Hz). Power

supplies shall be fully protected and

shall have LED status indication for

'power on' and 'overload'.

The intercom system shall provide a

volume controlled input for bal-

anced auxiliary program audio sig-

nals.

The intercom product range shall at

least embody a two channel master

station with built-in power supply;

one and two channel beltpacks;

one, two,four and six channel

speaker stations; two and six chan-

nel separate power supplies, 6-

channel matrix switches, 4-wire and

telephone interfaces and

accessories such as line-sockets, line

split boxes, a CALL beacon, head-

sets and handsets.

The intercom system shall be the

PRO series of ASL Intercom.

PRO SERIES ARCHITECTS

AND ENGINEERS SPECIFICATIONS

provided. Routing switches allow

access to channel A,channel B,chan-

nel A + B, or to local headset only.

Binaural Headset Connector

As an option, a XLR-6 headset con-

nector can be fitted, allowing the

user to hear channel A + AUX pro-

gram signal on the left headset can

and channel B + AUX program signal

on the right headset can. By changing

the position of internally mounted

jumpers, it is also possible to get

channel A + B on the left can and

AUX program signal on the right can.

PS 278 DUAL CHANNEL MASTER STATION

PRO SERIES

1 2 3 4 5 6

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ASL INTERCOM PS 430 Manual de usuario Pagina 3

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