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TABLE OF CONTENTS
INTRODUCTION .................................................................................................. 2
FRONT PANEL ..................................................................................................... 3
REAR PANEL ....................................................................................................... 4
BRIEF TECHNICAL DESCRIPTION ................................................................... 5
TH3 WIRING GUIDE ............................................................................................ 6
BASIC OPERATION ............................................................................................. 9
LEVEL SETTING PROCEDURE ....................................................................... 10
TH3 SOFTWARE CONTROL PANEL ................................................................ 11
SERIAL PORT HARDWARE AND SOFTWARE ............................................... 15
LecNet SERIAL PORT PROTOCOL .................................................................. 16
ACCESSORIES .................................................................................................. 22
GLOSSARY OF TH3 CONCEPTS ..................................................................... 22
SPECIFICATIONS .............................................................................................. 23
TROUBLESHOOTING ....................................................................................... 24
FCC NOTICES ................................................................................................... 25
SERVICE AND REPAIR ..................................................................................... 27
RETURNING UNITS FOR REPAIR ................................................................... 27
WARRANTY ......................................................................................... Back cover
INTRODUCTION
Lectrosonics is proud to offer the TH3, our third generation digital hybrid. The TH3
interfaces with a standard telephone line to add teleconferencing capability to any
sound system. Sophisticated featues, fast setup, easy operation, high sound quality
and low cost make the TH3 an ideal choice for board rooms, conference rooms, talk
radio and countless other applications.
Product Highlights
• DTMF dialing capability
• Simultaneous 2-wire/4-wire bridging for 3-site conferencing
• Three-way echo elimination with patented algorithm
• Level meters for easy setup
• Privacy mode can mute transmit only, receive only, or both
• AGC enhances volume of weak signals
• Wired remote control interface
• Serial interface for integration with control systems
• Front panel switches may be disabled for secure installation
• Tape recorder output with relay for automatic recording
• Automatic telephone answer and disconnect
• Compatible with third-party echo cancellers
