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IFBT4

Synthesized UHF IFB Transmitter

IFBT4, IFBT4/E01, IFBT4/X

INSTRUCTION MANUAL

Rio Rancho, NM, USA

www.lectrosonics.com

Fill in for your records:

Serial Number:

Purchase Date:

Featuring Digital Hybrid Wireless

™

Technology

U.S. Patent 7,225,135

IFBT4, IFBT4/E01, IFBT4/X

LECTROSONICS, INC.

Multi-Frequency IFB Transmitter

Rio Rancho, NM

Table of Contents

General Technical Description ..............................................................................................................................................................4

Introduction ..........................................................................................................................................................................................4

Audio Input Interface ...........................................................................................................................................................................4

Input Limiter .........................................................................................................................................................................................4

Audio DSP and Noise Reduction ........................................................................................................................................................5

Pilot Tone Squelch System ..................................................................................................................................................................5

Frequency Agility .................................................................................................................................................................................5

Power Delay .........................................................................................................................................................................................5

Microcontroller ..................................................................................................................................................................................... 5

Transmitter ...........................................................................................................................................................................................5

Antenna System ................................................................................................................................................................................... 5

Front Panel Controls and Functions .....................................................................................................................................................6

IFBT4 Front Panel ................................................................................................................................................................................6

OFF/TUNE/XMIT Switch ......................................................................................................................................................................6

Power Up Sequence ............................................................................................................................................................................6

Main Window .......................................................................................................................................................................................6

Frequency Window ..............................................................................................................................................................................6

Audio Input Gain Window ....................................................................................................................................................................6

Setup Window ...................................................................................................................................................................................... 6

ROLLOFF Setup Screen ......................................................................................................................................................................6

COMPAT Setup Screen ........................................................................................................................................................................ 7

IFBT4 Menu Diagram ........................................................................................................................................................................... 7

TUNING Setup Screen .........................................................................................................................................................................8

Lock/Unlock Panel Buttons .................................................................................................................................................................8

Rear Panel Controls and Functions ......................................................................................................................................................9

IFBT4 Rear Panel .................................................................................................................................................................................9

XLR Jack ..............................................................................................................................................................................................9

MODE Switches ...................................................................................................................................................................................9

Power Input Connector .......................................................................................................................................................................9

Antenna ................................................................................................................................................................................................9

Installation and Operation ...................................................................................................................................................................10

Operating Notes ...................................................................................................................................................................................10

Supplied Accessories...........................................................................................................................................................................11

Optional Accessories ...........................................................................................................................................................................12

UHF Transmitter Antenna Specications ........................................................................................................................................... 13

Specications .......................................................................................................................................................................................14

Troubleshooting .................................................................................................................................................................................... 15

Service and Repair ...............................................................................................................................................................................16

Returning Units for Repair .................................................................................................................................................................16