Telex Audiocom IFB-1000 Manuale utente

Te l ex

Operating Instructions

IFB-1000

Belt Pack

Intercom System

FACTORY SERVICE

All equipment returned for repair must be accompanied by documentation

stating your return address, telephone number and proof of date of

purchase, along with a description of the problem.

Return equipment to:

Factory Service Department

Telex Communications, Incorporated

West 1st Street

Blue Earth, MN 56013 U.S.A.

Warranty Repairs - If in warranty, no charge will be made for the repairs.

Equipment being returned for warranty repair must be sent prepaid and

will be returned prepaid.

Non-Warranty Repairs - Equipment that is not under warranty must be

sent prepaid. If requested, an estimate of repair costs will be issued prior

to service. Once your approval for repair, and repair of equipment is

completed, the equipment will be returned on a collect basis. Collect

charges may be avoided by sending a signed check for payment in full

along with your signed estimate approval form (the estimate includes the

shipping charge.)

CUSTOMER SUPPORT

Technical questions should be directed to:

Customer Service Department

Telex Communications, Inc.

12000 Portland Avenue South

Burnsville, MN 55337 U.S.A.

Telephone: (952) 884-4051

Fax: (800) 323-0498

9350-7477-000 Rev. B 10/2000

GENERAL

The Audiocom®IFB-1000 is a one-channel listen only IFB belt pack.

OPERATION

SYSTEM POWER

The IFB-1000 belt pack receives power externally, via the intercom

channel.

IFB-1000 SETUP

The channel termination is set for balanced operation, which is compat-

ible with other Audiocom equipment.

The headset/earset jack is set for 150 ohm operation.

EXTERNAL CONNECTIONS & CONTROLS

1 2

HEADSET

IFB-1000

1. Volume Control.

Use this control to adjust the headset/earset listen level.

2. On Indicator

This LED glows green when the belt pack is connected to an intercom

channel that is functioning.

3. Headset Connector

This connector accepts a wide-response earset, such as the Telex

EMV-2 (catalog number 60194-001), with a 1/4”monaural phone plug.

4. Intercom Channel Connectors

The IFB-1000 intercom channel is connected via a 3-pim female

connector. The IFB-1000 is powered from the intercom system power

supply and will turn on with the intercom system.

CONNECTOR PIN CONFIGURATIONS

HEADSET CONNECTOR

Type: 1/4”Monaural Plug

Sleeve Headset audio low

Tip Headset audio high

INTERCOM CHANNEL CONNECTORS

Type: XLR-3F

Pin 1 Common

Pin 2 Intercom audio and +24 VDC input

Pin 3 Intercom audio and +24 VDC input

SPECIFICATIONS

GENERAL:

Channel Supplied Power Requirements:

+24 VDC nominal (standard Audiocom line), 50 to 80 mA

Environmental Requirements:

Storage: -20°C to 80°C; 0% to 95% humidity, non-condensing

Operating: 0°C to 50°C; 0% to 95 % humidity, non-condensing

Dimensions:

3.25”(82.6 mm) H x 3.5”(88.9 mm) W x 1.8”(45.7 mm) D

Weight:

1.0 pounds (0.45 kg)

INTERFACE REQUIREMENTS:

Earset:

150 to 600 ohm headphones

Balanced Intercom Channel Level & Impedance:

1 Vrms nominal; 300 ohms ±5%

Noise Contribution:

Less than -60 dB on the line.

HEADPHONE AMPLIFIER:

Voltage Gain:

27 ±3 dB from the line

Maximum Output:

60 mW into 150 ohms

Frequency Response:

200 Hz to 8 kHz +1/-3 dB

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