Broadcast Tools FlexPhones Master User manual

Installation and Operation Manual
Due to the dynamic nature of product design, the information contained in this
document is subject to change without notice. Broadcast Tools, Inc., assumes no
responsibility for errors and/or omissions contained in this document. Revisions
of this information or new editions may be issued to incorporate such changes.
Broadcast Tools® is a registered trademark of Broadcast Tools, Inc.
Copyright, 1989 - 2007 by Broadcast Tools, Inc. All rights reserved.
No part of this document may be reproduced or distributed without permission.
Visit www.broadcasttools.com for important product update information.
Manual Update: 02/10/2007

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FlexPhones Master Installation and Operation Manual
Table of Contents
Section Title Page #
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Who to Contact for Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Additional Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Schematic and Component Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Appendix
WEBSITE:
Visit our web site for
product updates and
additional information.
2
TABLE OF CONTENTS

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FlexPhones Master Installation and Operation Manual
INTRODUCTION
INTRODUCTION
Thank you for your purchase of a Broadcast Tools® FlexPhones Master multi-user
headphone system (referred to as the FlexPhones Master or Master throughout this
manual). We’re confident that this product will give you many years of dependable
service. This manual is intended to give you all the information needed to install and
operate the Broadcast Tools® FlexPhones Master.
SAFETY INFORMATION
Only qualified personnel should install Broadcast Tools® products. Incorrect or
inappropriate use and/or installation could result in a hazardous condition.
Broadcast Tools, Inc., is unable to support NON-Broadcast Tools software, hardware or
NON-Broadcast Tools computer/hardware/software problems. If you experience these
problems, please research your hardware/software instruction manuals or contact the man-
ufacturers technical support department.
WHO TO CONTACT FOR HELP
If you have any questions regarding your product or you need assistance, please con-
tact your distributor from whom you purchased this equipment.
If you would like more information about Broadcast Tools® products, you may
reach us at:
Broadcast Tools, Inc.
131 State Street
Sedro-Woolley, WA 98284-1540 USA
Voice: 360 . 854 . 9559
Fax: 360 . 854 . 9479
Internet Home Page: www.broadcasttools.com
E-mail: [email protected]
THANK YOU FOR CHOOSING
BROADCAST TOOLS® BRAND PRODUCTS!
CAUTION!
Broadcast Tools®
Products, as with any
electronic device, can
fail without warning.
Do not use this product
in applications where a
life threatening condition
could result due to failure.
NOTE:
This manual should be
read thoroughly before
installation and operation.
WEBSITE:
Visit our web site for
product updates and
additional information.

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FlexPhones Master Installation and Operation Manual
DESCRIPTION
Product Description:
The FlexPhones Master is a professional Broadcast/Studio six channel dis-
tributed headphone system with independent talkback capabilities. Each of the six
channels provides stereo program monitoring and selective talkback with intercon-
nection via CAT5 cable to multiple Active Headphone Remotes (AHR-1) and/or the
Monitor Selector Interface (MSI). Multiple masters may be cascaded to form larg-
er systems. The FlexPhones Master is equipped with inputs for stereo program and
talkback audio. Rear panel program and talkback trimmers are provided to pre-set
maximum input levels. The microphone/line level talkback input is available via a
rear panel plug-in euroblock connector, while the front panel XLR connector facili-
tates the use of a user provided gooseneck microphone or headset. The front panel
is equipped with a level control for local headphones with both 1/4” and 1/8” stereo
headphone jacks. The six front panel talkback switches allow the user to independ-
ently communicate with each AHR-1 listener and can be configured to insert talk-
back audio into only the left or both ears and dim either or both program channels.
Any combination of switches may be pressed, while the “All-Call” interrupts all lis-
teners. The Talkback function can be remotely controlled. Six RJ45 jacks are pro-
vided to distribute audio and power via CAT5 cable to the AHR-1’s, and/or MSI’s

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FlexPhones Master Installation and Operation Manual
INSTALLATION
Installation:
Please examine your FlexPhones Master and/or AHR-1 carefully for any
damage that may have been sustained during shipping. If any is noted, please noti-
fy the shipper immediately and retain the packaging for inspection by the shipper.
The package should contain the FlexPhones Master, 16vac@600ma wall power
transformer, two CAT5 cables and this manual.
Installation of the FlexPhones Master in high RF environments should be
performed with care. Shielded cable is suggested for all audio connections.
All shields should be tied to the EGND terminals. The station ground should
be connected to the chassis ground screw located on the far right side of the
FlexPhones Master as viewed from the rear. It is recommended that all cables con-
nected to the FlexPhones Master be looped through ferrite cores to suppress RF.
Surge protection with RF filtering is also suggested for the wall transformer. The
purchase of an inexpensive UPS will provide back up in case of power outages.
Connections are via plug-in euroblock connectors and RJ45 connectors.
Remove the connector from the header; remove about 1/8” of insulation from each
wire. Insert the wire into the desired terminal and then tighten the screw. Be sure
no bare wires are exposed. Reinstall the connectors.
Stereo Program Input
Normal program audio should be connected to the + and - inputs for balanced oper-
ation, or to the + input and grounding the - side for unbalanced input operation on
TB1 (bottom). Audio levels should be between -15 and +4dBu.
Talkback Audio Input
Mic or line level audio should be connected to the + and - inputs for balanced oper-
ation, or to the + input and grounding the - side for unbalanced input operation on
either TB1 (top) or the front panel XLR connector. Audio levels should be between
–60 and –30dBu in MIC position or –15 and +4dBu in LINE position. JP1 and JP2
are used to set the talkback input for either MIC or LINE levels. Follow the jumper
layout in the appendix to set these two jumpers to the desired position. The factory
default is set to MIC.
Talkback Audio Output
The unbalanced output can be used to feed additional FlexPhones Master
talkback inputs. Connections to TB1 (top) can be made to the + output and ground
for unbalanced output operation.
NOTE:
For proper installation,
follow the silkscreen
labels on the rear
panel.
WEBSITE:
Visit our web site for
product updates and
additional information.