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Sonifex HY02 DIGITAL User Handbook Manual

Automatic telephone balance unit
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HY02 DIGITAL AUTOMATIC
TELEPHONE BALANCE UNIT
USER HANDBOOK
DHY 02EC
Single automatic TBU, eurocard version.
SONIFEX LTD, 1995.
All Rights Reserved
Revision V1.00a, June 1995
61, Station Road, Irthlingborough,
Northants., NN9 5QE, England.
Tel : +44 (0)1933 650 700
Fax : +44 (0)1933 650 726
Information in this document is subject to change without notice and does not represent a commitment on the part of Sonifex Ltd. No
part of this manual and/or databases may be reproduced or transmitted in any form or by any means, electronic or mechanical,
including photocopying, recording, or information storage and retrieval systems, for any purpose other than the purchaser's personal
use, without the express written permission of Sonifex Ltd.
Unless otherwise noted, all names of companies, products and persons contained herein are part of a completely fictitious adaptation
and are designed solely to document the use of Sonifex products.

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Summary of Contents for Sonifex HY02 DIGITAL

  • Page 1 Fax : +44 (0)1933 650 726 Information in this document is subject to change without notice and does not represent a commitment on the part of Sonifex Ltd. No part of this manual and/or databases may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or information storage and retrieval systems, for any purpose other than the purchaser’s personal...
  • Page 2 Connection of Apparatus to BT Lines Equipment Type : Sonifex HY02 Digital Eurocard Telephone Balance Unit BABT Approval Number : S/3619/23/L/501793 This apparatus is suitable for connection directly to the network by means of the cable mounted plug provided. If you require an appropriate BT socket, or sockets, installed in order to use this equipment then this form should be sent to your local telephone area office.

  • Page 3: Warranty And Safety Information

    Warranty Registration HY02 Digital Eurocard TBU Warranty Details The HY02 Digital audio product is guaranteed for 12 months from the date of purchase. The components and materials used are guaranteed against defects and faulty workmanship. Sonifex undertake to replace or repair faulty items at its discretion, within the warranty period, on a return to factory basis.

  • Page 4: Equipment Safety

    ‘Line Input’, ‘Line Output’, or ‘Remotes’. This equipment conforms to the safety regulations specified by use of the CE Mark. WARNING : The B.T. plug should be disconnected from the telecommunications network exchange line before removing the equipment covers. HY02 Digital Eurocard TBU User's Guide...

  • Page 5: Limitation Of Liability

    Customer Remedies - Sonifex's entire liability and your exclusive remedy shall be, at Sonifex's option, either (a) return of the price paid or (b) repair or replacement of the SOFTWARE or hardware that does not meet Sonifex's Limited Warranty and which is returned to Sonifex with a copy of your receipt or invoice.

  • Page 6: Faults Sheet

    Description of HY02 Digital Error Also, if you have any suggestions for additions or upgrades to the HY02 Digital unit , we would like to hear what they are : Additions that I Would Like to See...

  • Page 7: Introduction & Installation

    1. Introduction & Installation 1.1. Introduction The HY02 Digital telephone hybrid is a series of equipment presented as rack mounted single and twin channel units, or as a single channel eurocard. A single channel ringing detector is also available : DHY 02S Single automatic TBU, rack mounted with PSU.

  • Page 8: Manufacturer

    All connections are via DIN 41612 Type B, 32 way ‘A’ loaded edge connector. By using a high power DSP and a high quality 16 bit dual codec, the HY02 Digital gives some of the best audio figures available - it provides full adaptive echo cancellation to 28msec and gives unwanted sideband rejection figures of 69dBu on tone, reference peak output of +8dB.

  • Page 9: Accessory Ports

    Typically 69dB reference peak level of +8dB Network cancellation to 28msec Echo Cancellation Power ± 15V regulated. Dimensions Eurocard : 160mm, Height 3U, Width 8E Connections 32 Way Din 41612 Type B, ‘A’ loaded HY02 Digital Eurocard TBU User's Guide...

  • Page 10: Installing The Hy02 Digital Tbu

    The Line Input is balanced bridging and will accept normal signals at 0dBu peaking to +8dBu from a sound mixer ‘clean feed’. The input circuitry to the HY02 Digital has a very effective limiter which will prevent high level overloading problems.

  • Page 11: Using The Hy02 Digital

    To clear the line at the end of the call, press the Remote Line Connect switch. Please note that any adjustments and settings should be carried out by competent engineering personnel. HY02 Digital Eurocard TBU User's Guide...
  • Page 12 HY02 Digital eurocard ? A : There are two : The main advantage is that the HY02 Digital rejects signals equally across its frequency band which results in a much better total rejection ratio. The second advantage is that the HY02 Digital can handle line echo and reflections of up to 28msec.

  • Page 13: Circuit Description & Controls

    Page 2-1 2. Circuit Description & Controls The HY02 Digital Eurocard Telephone Hybrid consists of TBU circuits mounted on a eurocard sized PCB and usually housed in a host unit rack. The card must be used with a BABT approved power supply to keep compliance - isolation is achieved by means of the barriers created at the power supply and the hybrid electronics.
  • Page 14 Page 2-2 Circuit Description & Controls HY02 Digital Eurocard TBU User's Guide...

  • Page 15: Telephone Line, Barrier And Transformer

    K break and dial hang up tone will also untrigger the latch when required to do so. A signal from the logic operates input muting when the handset is in use preventing spurious output signals at the equipment. HY02 Digital Eurocard TBU User's Guide...

  • Page 16: Line Balancing Electronics

    -10dB -20dB -22dB 30dB -41dB 40dB -57dB 50dB -66dB Attack: 125mS, decay, 1dB per 5mS Transmit set to medium : As above, but input 0dB for 0dBM to line. Transmit set to high : HY02 Digital Eurocard TBU User's Guide...

  • Page 17: Receive Circuit

    Dial tones presented to the equipment at the termination of a call, ( hang up tone ) can be detected by the equipment and can be used to disconnect the HY02 Digital from the telephone line as an automatic process.

  • Page 18: Displays

    If any of these errors should occur, please contact your nearest Sonifex distributor. LD2, the transmit LED, and LD3, the receive LED, are on whenever transmitting and receiving respectively. HY02 Digital Eurocard TBU User's Guide...

  • Page 19: Alignment Controls

    Set for dial tone detect ( hang up tone ). If JP2 is connected and the K- break has failed, this will automatically hang the line up. JP12 Link for instant reset. JP13 Factory Set JP14 Not used HY02 Digital Eurocard TBU User's Guide...

  • Page 20: Preset Potentiometers

    2.2.2. Preset Potentiometers This sets the frequency of the primary 440 Hz disconnect tone. Range 250 - 550 Hz. This sets the frequency of the secondary 350 Hz disconnect tone. Range is 250 - 550 Hz. HY02 Digital Eurocard TBU User's Guide...

  • Page 21: Connection Details

    3.1.2. Power Requirements The DHY 02EC is approved for use with the HY 02B power supply unit. The d.c. power requirements of the DHY 02EC are : +15V regulated @ 160mA -15V regulated @ 160mA HY02 Digital Eurocard User's Guide...
  • Page 22 Page 3-2 Connection Details This page is deliberately blank. HY02 Digital Eurocard User's Guide...

  • Page 23: Index

    Page 0 Index HY02 Digital Eurocard TBU User's Guide...

  • Page 24: Table Of Contents

    Warranty And Safety Information ..............i Warranty Registration....................i HY02 Digital Eurocard TBU ...................i Warranty Details ......................i Safety Of Mains Operated Equipment HY02 Digital TBU..........i Preparing the Eurocard for Use ..................i Equipment Safety ......................ii Limitation of Liability ....................... iii Faults Sheet ........................iv...
  • Page 25 Options, 2-7 Output Circuitry, 2-3 Potentiometer Settings, 2-8 Power Connections Between Power Supply & TBU, 3-1 Power Supply Connection, 1-4 PSTN Suitability, 1-2 Questions and Answers, 1-6 Receive Level, 2-7 Receive Level Adjustment, 1-4 HY02 Digital Eurocard TBU User's Guide...

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