CODAN Remote Control System 8570/8571 Technical Service Manual No part of this handbook may be reproduced, transcribed, translated into any language or transmitted in any form whatsoever without the prior written consent of Codan Pty Ltd 1991 Codan Pty Ltd Codan part number 15–02038 Issue 4, December 1999 Head Office Codan Pty Ltd ACN 007 590 605 81 Graves Street Newton, South Australia 5074 AUSTRALIA Telephone +61 8 8305 0311 Facsimile +61 8 8305 0411 Email [email protected] Worldwide Web www.codan.com.au Radio Communications Division Codan (UK) Ltd Gostrey House Union Road Farnham, Surrey GU9 7PT UNITED KINGDOM Telephone +44 1252 717 272 Facsimile +44 1252 717 337 Codan Pty Ltd Suite 11A, 2 Hardy Street South Perth, Western Australia 6151 AUSTRALIA Telephone +61 8 9368 5282 Facsimile +61 8 9368 5283 Codan Pty Ltd 10660 Wakeman Ct Manassas VA 20110 USA Telephone +1 703 361 2721 Facsimile +1 703 361 3812 Table of contents CODAN Index 1 About this manual Standards and icons. 1–2 Definitions . 1–3 Acronyms and abbreviations. 1–3 Circuit reference designations. 1–9 Units . 1–10 Unit multiplier. 1–10 About this issue. 1–11 Associated documents. 1–11 2 Overview and specifications Overview . 2–2 Operating instructions. 2–2 Specifications. 2–3 General specifications. 2–3 Panel connectors for 8570 Console. 2–4 Rear panel connectors for 8571 Interface. 2–7 Options and accessories. 2–10 Options. 2–10 Accessories. 2–10 Power supplies. 2–11 3 Brief description General information. 3–2 Receive audio path. 3–3 Transmit audio path. 3–4 Signalling and microcontroller. 3–5 Automatic equalisation. 3–6 4 Technical description—8570 Power supply. 4–2 Power on–off. 4–2 Regulators. 4–2 Receive audio path. 4–3 2 or 4–wire interface and I/P amplifier. 4–3 Gain and equalisation stage. 4–3 300 Hz notch filter. 4–4 Audio mute. 4–5 Remote Control System 8570/8571 Technical Service Manual i Table of contents Volume control and audio amplifier. 4–5 Transmit audio path. 4–6 Input amplifier. 4–6 Microphone compressor. 4–6 Mixer amplifier. 4–6 Line driver and transformer. 4–6 2 or 4–wire interface. 4–7 Signalling and microprocessor. 4–8 Microcontroller bus. 4–8 Internal I2C bus. 4–9 Keyboard and display. 4–9 300 Hz control tone—generation and detection. 4–9 Signalling modem. 4–11 Signalling format. 4–11 Equalisation and levelling. 4–13 Automatic equalisation. 4–13 Auto levelling. 4–13 Options for 8570. 4–15 Option M—morse facility. 4–15 Option PH—headphone output. 4–15 Option PM—miscellaneous facilities. 4–15 Option R—special purpose I/O. 4–16 Option RS—RS232 Interface. 4–17 Option SB—standby battery. 4–17 5 Technical description—8571 Backplane and power supply. 5–2 Receive audio path. 5–3 Rx audio from transceiver. 5–3 300 Hz notch filter and audio compressor. 5–3 Rx audio bus and audio gate. 5–3 Line driver and hybrid. 5–4 2 or 4–wire interface. 5–4 Transmit audio path. ..