Lencore G8254 Operation Manual

Talk back communicator

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OPERATIONS

MANUAL

TALK BACK COMMUNICATOR

Document number: 200-0011 rev C

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Page 1 OPERATIONS MANUAL TALK BACK COMMUNICATOR Document number: 200-0011 rev C...
Page 2: Table Of Contents
table of contents General operation: ..........................1 Features and Capabilities:........................2 Installation Details: ..........................3 Overview ..............................6 Wiring ..............................8 Power and Network connections: ......................9 UPS connection: ..........................9 Configuring the System .......................... 10 Using the System ............................ 10 Paging ..............................
Page 3 IMPORTANT SAFETY INSTRUCTIONS RISK OF ELECTRIC SHOCK- DO NOT OPEN THE UNIT. THERE ARE NO SERVICABLE COMPONENTS INSIDE. Read these instructions. Keep these instructions. Heed all warnings. Follow all instructions. Do not use this apparatus near water. Clean only with dry cloth. Do not block any ventilation openings.
Page 4 - At least one UPS and batteries should be used to provide secondary power supply for emergency purposes - The G8254 should be installed using: Use four 6-32 x 1/2, black, stainless steel pan-head machine screws to mount the unit to a junction box at least 2-1/8"...
Page 5: General Operation
Talk Back units, and paging is disabled on those units. Only one dialog can happen at any given time. At the headend, the zone override page is handled by the six “Zone Override” buttons. The Talk-back unit works with Lencore's G8220 Head-End rack unit.
Page 6: Features And Capabilities
Variable gain. Both microphones have variable gain circuits that allow the headend to choose whether to use standard gains or ultra-high sensitivity mode. Speaker Relay. The speaker relay connection goes to a special Lencore Speaker that is • relay activated.
Page 7: Installation Details
4x4 j-box below the Talk Back unit, connected to the switchbox with a suitable nipple. The Talk Back units requires a 24v dc power feed from either a Lencore supplied HRP-150-24 power supply or a Lencore PSM7A battery backed up 24v supply. With either supply a total of 15 units can be fed off one supply (assuming 16AWG wire at 400 ft max from power supply to the last Talk Back unit).
Page 8 Flow diagram...
Page 9 Typical 4x4 junction box: Talk Back mounted in the junction box:...
Page 10: Overview
Overview Front Plate 1. PANIC button Motion Sensor The panic button can be pressed to The motion sensor senses motion in the send a page alert to the central room and can be monitored by the central monitoring area. monitoring area. 2.
Page 11 (supervised by head-end) The high unit number sets the sets first first digit of the unit number. 2. EXT SPKR Connect a special Lencore speaker (optional) to this connector. 6. UNIT NUMBER (LOW) (not supervised) The low unit number sets the second digit of the unit number.
Page 12: Wiring
Wiring Power and Network connections: 1. The unit is powered by an external 24VDC power supply. The external power supply’s positive 24VDC output is wired to the Talk Back’s positive (+) terminal on the PWR IN terminal block The external power supply’s negative 24VDC output is wired to the Talk Back’s negative (-) terminal on the PWR IN terminal block.
Page 13: Power And Network Connections
Connect a wire from the previous OP or router negative (-) terminal to either of the Talk Back PWR IN negative (-) terminals. The EXT SPKR is available to connect a special Lencore external speaker. Do not attempt to connects any other speaker to this connection or damage to the Talk Back module may occur.
Page 14: Configuring The System
Configuring the System The system must be configured before the Talk Back module can be used. 1. Using System Manager, create a page zone 100 for the Talk Back audio to be heard and set the volume for each speaker. 2.
Page 15: Microphone Peak Detection
Speaker relay: The speaker relay connection goes to a special Lencore Speaker that is relay activated. This connection provides a switched 24vdc signal that either activates the local speaker or not. This signal is triggered by the security office page to the given room.
Page 16 Testing Procedure Equipment should only be tested by qualified trained personnel. These instructions are meant as a guide to what testing should take place; it is not an instruction on how to complete the testing. Refer to the Operations, Sound Manager, and Configurator manuals for detailed information. Testing should be performed monthly or more frequently if necessary.
Page 17 Maintenance Procedure Equipment should only be inspected and maintained by qualified trained personnel. These instructions are meant as a guide to what actions should take place; it is not an instruction on how to complete the activities. Maintenance should be performed monthly or more frequently if necessary. 1.
Page 18 NOTICE TO USERS, INSTALLERS, AUTHORITIES HAVING JURISDICTION, AND OTHER INVOLVED PARTIES This product incorporates field-programmable software. In order for the product to comply with the requirements in the Standard for Control and Communication Units for Mass Notification Systems, UL2572, certain programming features or options must be limited to specific values or not used at all as indicated below.
Page 19 Revision Revision Revision Level Date Description of Revision Author 4/30/19 Initial Release M. Cook Various changes for UL2572/864 M. Cook 7/29/19 M. Cook 10/17/19...
Page 20 Woodbury, NY 11797 516-682-9292 info@lencore.com www.lencore.com The information contained herein is proprietary to Lencore Acoustics Corp. and copyright protected. No part of this manual can © be copied, used or distributed without prior authorization from Lencore Acoustics Corp. Copyright 2019...