Subscribe to Our Youtube Channel
Summary of Contents for Lectrosonics TH1
- Page 1 TH1 ACTIVE TELEPHONE HYBRID MODULE OPERATING INSTRUCTIONS and trouble-shooting guide LECTROSONICS, INC. Rio Rancho, NM...
-
Page 3: Table Of Contents
INTRODUCTION The TH1 Active Telephone Hybrid provides a convenient way to use a Modular Audio Processing sound system for teleconferencing purposes. The TH1 works with any standard two wire telephone system. A powerful Digital Signal Processor (DSP) actively adjusts the line balance to achieve maximum transmit and receive signal separation. In addition, echo suppression based on Lectrosonics unique Adaptive Proportional Gain algorithm minimizes acoustic echo while maintaining near full-duplex operation. -
Page 4: Fcc Part 68 Compliance
If trouble is experienced with this equipment, please contact Lectrosonics, Inc. at (800) 821-1121 for repair and/or warranty information. If the trouble is causing harm to the telephone network, the telephone company may request you remove the equipment from the network until the problem is resolved. -
Page 5: General Technical Description
GENERAL TECHNICAL DESCRIPTION The TH1 is built around a powerful DSP microprocessor. The DSP performs all internal calculations using 24 bits, giving an internal dynamic range of 144dB. All A/D and D/A converters are 16-bit, sigma-delta types with 64 times oversampling. -
Page 6: Installation
TH1. The TH1 is installed from the rear of the Modular Audio Processor mainframe. Care should be taken when aligning the circuit board with the card guides. Once the module is aligned, slide the card forward in the mainframe until the female edge connector on the module seats firmly onto the male pins of the main bus board. -
Page 7: Front Panel Description
CONNECT - Connects or disconnects the TH1 from the phone line. The Connect VOL LIMIT button is used to pick up an incoming call or to switch back and forth from the TH1 to a handset. TX LEVEL - Adjusts the transmit volume level. The TX SIG LED indicates the... -
Page 8: Rear Panel Description
OUT(+), OUT(-) - Outputs the received audio signal. This output is not normally used when the TH1 drives the MAP system Main or Aux bus. MIX OUT - Provides an unbalanced signal consisting of a mix of the transmit and receive signals. -
Page 9: Operating Instructions
OPERATING INSTRUCTIONS The following instructions assume that the TH1 will feed the Main bus of a MAP system, and that the Aux Output of the AC1 Controller module will feed the Transmit Input of the TH1. This is the standard setup for the TH1 when used with a sound system configured around the MAP system. -
Page 10: Troubleshooting
No receive sound from TH1 1) RX Level control not turned up 2) Connect LED not lit 3) Phone line from wall jack to TH1 not connected 4) The Send to Bus dipswitch is in the Off position (switch to On) -
Page 11: Service And Repair
There are no adjustments inside that will make a malfunctioning unit start working. LECTROSONICS service department is equipped and staffed to quickly repair your equipment. In-warranty repairs are made at no charge in accordance with the terms of the warranty. Out of warranty repairs are charged at a modest flat rate plus parts and shipping. -
Page 12: Warranty
This warranty gives you specific legal rights. You may have additional legal rights which vary from state to state. LECTROSONICS, INC. 581 LASER ROAD RIO RANCHO, NM 87124 USA August 19, 1996...
Need help?
Do you have a question about the TH1 and is the answer not in the manual?
Questions and answers