Telex audiocom IFB-1000 REV 0 User Manual

CUSTOMER SUPPORT

®

Technical questions should be directed to:

Customer Service Department
Tele x Communications , Inc.
12000 Portland Av enue South
Burnsville, MN 55337 U.S .A.

T elephone: 1-800-392-3497
Fax: [phone]

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. In lieu of this, you may
obtain a Return Authorization form from our Customer Service
Department.

Return equipment to :

Service Department
Tele x Communications , Inc.
8601 East Cornhusker Hwy .
Lincoln, NE 68507
T el: 1-800-553-5992
Direct: 1-402-467-5321

Telex

Operating Instructions

IFB-1000
Belt Pack

Intercom System

9350-7477-000 Rev. D 6/2006

GENERAL

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

OPERATION

SYSTEM POWER

The IFB-1000 belt pack receives pow er e xternally, via the intercom
channel.

IFB-1000 SETUP

The channel termination is set for balanced operation, which is compat­ible with other Audiocom equipment.

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

EXTERNAL CONNECTIONS & CONTROLS

1 2

3

4

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

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

INTERNAL JUMPER
CONNECTOR J3

The IFB-1000 can be operated in
Audiocom (balanced) or RTS/Clear­Com (unbalanced) mode.

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HEADSET

IFB-1000

1. V olume 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” monaur al 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.

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.