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インターホン・システム ASL INTERCOM PS 279のPDF ユーザーマニュアルをオンラインで閲覧またはダウンロードできます。ASL INTERCOM PS 279 16 ページ。 Dual channel master station

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1. Table of Contents

6.0

FRONT PANEL CONTROLS AND CONNECTOR

VOLUME control knobs

These knobs adjust the listen level of the headset.

Each channel can be adjusted separately.

SIDETONE trimmers

These trimmers adjust the level of your own voice as

you hear it in your headset.

Adjustment procedure:

set the trimmer in start position: fully clockwise.

switch off the microphone of all connected

(speaker!) stations.

switch on the microphone of the required channel.

turn up the volume of the required channel.

speak into the headset microphone.

adjust the listen level by turning the sidetone

trimmer.

The operating area is between fully clockwise and

minimum level. Adjusting the sidetone does not affect

the level of your voice as it is heard by other stations.

TALK buttons

These buttons allow you to talk to each channel

separately or simultaneously.

The large green LED is lit when the talk function is

activated.

Latched switching:

When a TALK button is pressed shortly, the

microphone of the chosen channel will be switched on

and latches electronically. When pressed again, the

microphone will switch off.

Momentary switching:

When holding a TALK button pressed while talking,

the microphone will remain switched on until the

button is released. Then the microphone will switch off

automatically.

15 CALL A & B buttons

These push buttons activate the CALL system. A

momentary push will send a visual CALL signal to all

stations connected to that intercom channel and the

CALL LEDS will start flashing.

When holding the buttons pressed for 2 seconds, the

buzzer will be activated.

After the CALL button is released the LEDS will

continue to flash for further 2 seconds.

16 HEADSET connector

A XLR-4 type connector to connect the local headset.

The headset-can must have an impedance of 200

ohms or greater, or each 400 ohms minimum when in

parallel. The mic may be of the dynamic or electret

type.

Pin assignments:

shield mic. (GND)

mic. +

phones +

phones –

The wiring is such that both headset cans are connected

in parallel and receive the same signal. The two

headphone amplifiers run in a bridged mode.

As an option, an XLR-6 type connector can be fitted to

allow a binaural headset configuration where a different

signal will appear on each can. In this mode the internal

headphone amplifiers are not bridged.

See section 7.1 Internal Jumpers and Controls.