Gai-tronics 305-002 Line Balance Assenbly (600-ohm) User Manual download pdf

Pub. 42004-323C

GAI-Tronics Corporation 400 E. Wyomissing Ave. Mohnton, PA 19540 USA

610-777-1374  800-492-1212  Fax: 610-796-5954

ISIT WWW.GAI-TRONICS.COM FOR PRODUCT LITERATURE AND MANUALS

GAI-TRONICS® CORPORATION

A HUBBELL COMPANY

Model 305-002

600-Ohm Line Balance Assembly

Confidentiality Notice

This manual is provided solely as an operational, installation, and maintenance guide and contains

sensitive business and technical information that is confidential and proprietary to GAI-Tronics.

GAI-Tronics retains all intellectual property and other rights in or to the information contained herein,

and such information may only be used in connection with the operation of your GAI-Tronics product or

system. This manual may not be disclosed in any form, in whole or in part, directly or indirectly, to any

third party.

General Information

The GAI-Tronics Model 305-002 Line Balance Assembly is designed to properly load both the page and

party line circuits of a GAI-Tronics 600-ohm Page/Party

communication system. One line balance

assembly must be installed in each system. The line balance assembly may be used in single or multi (up

to five) party line systems.

Installation

There are three primary considerations in determining the location of the line balance assembly:

1. It should be near the electrical center of the system.

2. It should be adjacent to an indoor station in a relatively quiet area.

3. It should be no more than 26,400 feet (5 miles or 8 km) from the most distant station, when used with

GAI-Tronics’ standard cable. For larger systems or when non-standard cable is to be used, please

contact a GAI-Tronics representative for further information.

Mounting can be accomplished by either suspending the assembly by a 1-inch conduit nipple (not

supplied) from the bottom of an indoor wall station or by using the mounting ears located on the box.

Connect one twisted pair for the page circuit and a similar pair for each party line between the terminal

blocks of the line balance assembly and the associated indoor wall station.

Adjustment

To set the control for proper page circuit loading and to minimize the receiver sidetone, complete the

steps listed below. Sidetone is the amount of signal returned from the microphone to the receiver element

of the handset, i.e., how loudly the user hears his or her own voice. This adjustment needs to be made

during the initial installation of the system. However, if more than ten handset stations or speaker

amplifiers are added or deleted in the system at any time, readjust the page circuit loading.

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Summary of Contents

Page 1 - Model 305-002

Pub. 42004-323C GAI-Tronics Corporation 400 E. Wyomissing Ave. Mohnton, PA 19540 USA 610-777-1374  800-492-1212  Fax: 610-796-5954 VISIT WW

Page 2 - Specifications

Pub. 42004-323C Model 305-002 600-Ohm Line Balance Assembly Page 2 of 2 f:\standard ioms - current release\42004 instr. manuals\42004-323c.doc 04/13

Page 3 - Return Policy

(Rev. 10/06)WarrantyEquipment. GAI-Tronics warrants for a period of one (1) year from the date of shipment, that anyGAI-Tronics equipment supplied her

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Gai-tronics 305-002 Line Balance Assenbly (600-ohm) User Manual

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