ASL INTERCOM PS 280 Gebruikershandleiding - Pagina 2

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1.0

GENERAL DESCRIPTION

The PS 280 is designed to be a dual channel power

supply in an ASL intercom system and can be used in

portable as well as fixed applications. It incorporates an

adjustable auxiliary program signal input and uses only 1U

of 19" rack space.

The unit is very versatile and ideal for use in applications

where standard microphone cable is available and ease of

setup is of paramount importance.

The intercom line power supply is fully protected and can

drive at least 20 beltpacks or 10 speaker stations, or a

combination, operating at full power.

2.0

UNPACKING

The shipping carton contains the parts listed below.

The PS 280

Mains power cable

Spare fuses

User manual

If any are missing contact your dealer.

With the PS 280 will be a small packet of spare fuses.

Please keep them in a safe place.

There is also one spare fuse included in the mains inlet.

3.0

MECHANICAL INSTALLATION

A vertical rack space of 1U (1.75", 44mm) is required for

the PS 280. It is not necessary to provide rear support by

extra bracing or shelving.

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.

4.0

MAINS POWER

The PS 280 may be connected to the mains power outlet

to which other audio equipment is connected. The outlet

should have a clean earth. Avoid using mains power

outlets which also power dimmer controlled lighting

equipment.

Before connecting the unit to its AC power source, check

that the mains voltage setting is set in accordance with

your local mains voltage. The voltage setting is indicated

by a label on the rear panel.

For each channel separately, the intercom line impedance

circuitry is installed.

Fully electronic switching increases reliability and allows

for remote Mic Mute facility.

All microphones of the stations connected to the PS 280

can be muted by pushing a single front panel button.

An Aux input at the rear panel, allows injecting external

audio signals of line or mic level into the intercom audio

line. When 'mic level' is selected, +30V phantom power is

available at the Aux input connector.

ASL has taken great care to ensure that 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.

The power supply regulator is mounted on the rear of the

unit, and after a period of time it will feel hot to the touch.

This is quite normal, and should be no cause for alarm.

If a change is necessary, the internal mains transformer

wiring will need to be reconnected as shown in the figure.

Remember that the AC mains fuse will need to be

changed for one of the correct rating as indicated in

section 5.9

The power cord supplied with this unit carries the following

information label:

WARNING

This appliance must be earthed