LINKnet™ OFR400 RF MODULES USER MANUAL INSTALLATION, OPERATION AND MAINTENANCE KAVAL TELECOM INC. 60 Gough Road Markham, Ontario L3R 8X7 Telephone: (888) 86-KAVAL Web: www.kaval.com E-mail: info@kaval.com Document #DCM000000019, Rev.
LINKnet™ OFR400 RF MODULES ! USER MANUAL DCM000000019 PROPRIETARY STATEMENT © 2000 KAVAL TELECOM INC. All rights reserved. No part of this publication, or any software included with it may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, including photocopying, electronic, mechanical, recording or otherwise, without the prior written permission of the copyright holder. This document contains proprietary information of KAVAL TELECOM INC.
LINKnet™ OFR400 RF MODULES ! USER MANUAL DCM000000019 REVISION RECORD Rev. № Page № 0 All Description of Revision Original Release Date Apr.6,2000 TRADE MARK NOTICE This manual makes reference to trademarks that are the property of other companies. References are used only to refer to the products or services of the trademark owners. LINKnet™ is a trademark of KAVAL TELECOM INC.
LINKnet™ OFR400 RF MODULES ! USER MANUAL TABLE 1. OF OFR400 MODULES.................................. 4 OVERVIEW ............................................................. 4 Theory Of Operation......................................... 4 MODELS................................................................. 4 BLOCK DIAGRAM ..................................................... 5 OFR400 RF Module ......................................... 5 MODULE SPECIFICATIONS .......................................
LINKnet™ OFR400 RF MODULES ! USER MANUAL 1. DCM000000019 OFR400 MODULES Overview Theory Of Operation An OFR, or On Frequency Repeater, is a radio repeater that simultaneously receives and transmits a single narrow band radio channel on exactly the same frequency. The OFR accomplishes its repeater function without store and forward circuitry, or expensive conventional simulcasting techniques.
LINKnet™ OFR400 RF MODULES ! USER MANUAL Block diagram RF Output 403-512 MHz DCM000000019 OFR400 RF Module Transmit Board Gain Control Blind-Mate to SMA RF Connector IF Board First IF Filter Buffers, Filters, and Linear Power Amplifier Gain Control First Local Oscillator Test Oscillator 2'nd Local Oscillator 2'nd IF Crystal Filter UMC Controller Board Power Circuits MicroController with lines to all Boards Communication Interfaces Power & Control to Backplane 2'nd IF Crystal Filter Receive
LINKnet™ OFR400 RF MODULES ! USER MANUAL Module Specifications DCM000000019 SPECIFICATION Frequency Bands 403-512 MHz in 5 Bands Channel Spacing 25 or 12.5 KHz Modulation Types Narrowband FM RF Frequency Stability Tracks Input Signal Exactly Adjacent Channel Selectivity 60 dB Minimum Max. RF Output Power 37 dBm RF Output Power Range Power can be reduced 20 dB in 1 dB Steps (AGC Controlled) RF Output Power Variation vs.
LINKnet™ OFR400 RF MODULES ! USER MANUAL DCM000000019 SPECIFICATION Operation Size 9.11” High, 2.00” Wide, 14.00” Deep Weight 10 lbs, 4.5 kg Max Software Set-up The OFR400 module is shipped pre-configured with the following factory set options: OPTION Frequency RANGE OF VALUES 403 – 512 MHz (As per Model) DEFAULT VALUE Order Specific Receive Threshold –110 to -50 dB -89 dB Receive Hysteresis 1 to 10 dB 2.5 dB Hang Time 0.0 to 5.0 Seconds 2.
LINKnet™ OFR400 RF MODULES ! USER MANUAL DCM000000019 Power On Self Test (POST) Each system module automatically performs a self-diagnostics when inserted into the system Card-cage. These tests determine that the unit is a) correctly installed in the Card-cage and b) not damaged in transit. • • All six of the LED’s on the front panel will flash 3 times • • If the card is “OK” the LED’s will continue normally.
LINKnet™ OFR400 RF MODULES ! USER MANUAL DCM000000019 Normal Operation The OFR400 Module has six LED’s on the faceplate: 1. OPERATING - Under normal operating conditions, this LED will flash GREEN when RF Data is present. 2. STAND BY – Under the control of the Controller Module, the OFR400 Module has the ability to act as a duplex transmitter, sitting perpetually in Stand by Mode waiting for the primary transmitter to fail. This LED should be constant Amber.
LINKnet™ OFR400 RF MODULES ! USER MANUAL DCM000000019 OFR Drawing (Sides and Top) OFR400 Module Printed: 00.04.
LINKnet™ OFR400 RF MODULES ! USER MANUAL Antenna Installation DCM000000019 • All Antenna Installation is to be performed by Qualified Technical Personnel only. • Antenna Installation Instructions and locations below are for the purpose of satisfying FCC RF Exposure Compliance requirements. • The Roof Top Antenna for linking to the Donor Site is a directional (high gain) Antenna fixed-mounted physically on the side or top of a building, or on a tower. The Antenna Gain must be no more than 10 dB.
