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Manual abstract: user guide TELEX AUDIOCOM IFB-1000REV 0
Detailed instructions for use are in the User's Guide.
[. . . ] CUSTOMER SUPPORT
Technical questions should be directed to: Customer Service Department Telex Communications, Inc. [. . . ] Lincoln, NE 68507 Tel: 1-800-553-5992 Direct: 1-402-467-5321
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.
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
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.
C O N N EC TO R D E SC R I PT I O N
Audiocom M ode - jumper populated across pins 1& 2 (balanced) J3 RTS/Cle a r-Com M ode - jumper populated across pins 2 & 3 (unbalanced)
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 compatible with other Audiocom equipment. The headset/earset jack is set for 150 ohm operation. EXTERNAL CONNECTIONS & CONTROLS
1 2
DEFAULT
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.
Jumper populated across pins 1&2
3
4
HEADSET
IFB-1000
1. Use this control to adjust the headset/earset listen level. [. . . ] The IFB-1000 is powered from the intercom system power supply and will turn on with the intercom system. [. . . ]
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